User manual FLOW METER SPP-N118

Assstng the automaton ndustry snce 1986 User manual FLOW METER SPP-N118 Frmware: v.6.00 or hgher Input type: 0/4-20 ma Batchng and totalzer functon Read the user's manual carefully before startng to use the unt or software. Producer reserves the rght to mplement changes wthout pror notce. 2014.12.30 SPP-N118_INSSXEN_v.2.07.002

CONTENTS 1. BASIC REQUIREMENTS AND USER SAFETY...3 2. GENERAL CHARACTERISTICS...4 3. TECHNICAL DATA...5 4. DEVICE INSTALLATION...7 4.1. UNPACKING...7 4.2. ASSEMBLY...8 4.3. CONNECTION METHOD...8 4.4. MAINTENANCE...17 5. FRONT PANEL DRIPTION...18 6. PRINCIPLE OF OPERATION...19 6.1. MEASUREMENT MODE...19 6.2. DETECTION OF THE PEAK VALUES...22 6.3. CONTROL OF THE RELAY OUTPUTS...23 6.3.1. One threshold mode...25 6.3.2. Two thresholds mode...26 6.3.3. Batcher mode and PrE r1 mode...27 6.3.4. Use of the batcher counter as a marker...28 7. DEVICE PROGRAMMING...29 7.1. PROGRAMMING...29 7.2. PARAMETERS EDITION...30 7.2.1. Numerc parameters (dgt change mode)...30 7.2.2. Numerc parameters (slde change mode)...30 7.2.3. Swtch parameters ( LIST type)...31 7.3. DRIPTION...31 7.3.1. relay1 menu...31 7.3.2. FLouu menu...35 7.3.3. batch menu...38 7.3.4. total menu...39 7.3.5. Pr np menu...40 7.3.6. Int d parameter...40 7.3.7. FLtEr menu...41 7.3.8. OutP menu...41 7.3.9. brght parameter...44 7.3.10. HOLd menu...44 7.3.11. SECU menu...45 7.3.12. rs-485 menu...45 7.3.13. Edt t parameter...46 7.3.14. defs parameter...46 7.3.15. SErv menu...46 7.4. STRUCTURE...47 8. OVER-CURRENT PROTECTION...49 9. DISPLAYED VALUES CALCULATION...49 9.1. ADDITIONAL CALCULATIONS (USED CONVERSION CHARACTERISTIC)...49 9.1.1. Lnear characterstc...49 9.1.2. Square characterstc...50 9.1.3. Square root characterstc...51 9.1.4. User defned characterstc...51 9.2. EXAMPLES OF CALCULATIONS...52 10. THE MODBUS PROTOCOL HANDLING...56 10.1. LIST OF REGISTERS...56 10.2. TRANSMISSION ERRORS DRIPTION...62 10.3. EXAMPLES OF QUERY/ANSWER FRAMES...63 11. DEFAULT AND USER'S SETTINGS LIST...65 2

Explanaton of symbols used n the manual:! - Ths symbol denotes especally mportant gudelnes concernng the nstallaton and operaton of the devce. Not complyng wth the gudelnes denoted by ths symbol may cause an accdent, damage or equpment destructon. IF THE DEVICE IS NOT USED ACCORDING TO THE MANUAL THE USER IS RESPONSIBLE FOR POSSIBLE DAMAGES. - Ths symbol denotes especally mportant characterstcs of the unt. Read any nformaton regardng ths symbol carefully 1. BASIC REQUIREMENTS AND USER SAFETY! - The manufacturer s not responsble for any damages caused by napproprate nstallaton, not mantanng the proper envronmental condtons and usng the unt contrary to ts assgnment. - Installaton should be conducted by qualfed personnel. Durng nstallaton all avalable safety requrements should be consdered. The ftter s responsble for executng the nstallaton accordng to ths manual, local safety and EMC regulatons. - If the devce s equpped wth PE connector, t should be connected to PE wre. Otherwse PE wre should be connected to GND connector. - The unt must be properly set-up, accordng to the applcaton. Incorrect confguraton can cause defectve operaton, whch can lead to unt damage or an accdent. - If n the case of a unt malfuncton there s a rsk of a serous threat to the safety of people or property addtonal, ndependent systems and solutons to prevent such a threat must be used. - The unt uses dangerous voltage that can cause a lethal accdent. The unt must be swtched off and dsconnected from the power supply pror to startng nstallaton of troubleshootng (n the case of malfuncton). - Neghbourng and connected equpment must meet the approprate standards and regulatons concernng safety and be equpped wth adequate overvoltage and nterference flters. - Do not attempt to dsassemble, repar or modfy the unt yourself. The unt has no user servceable parts. Defectve unts must be dsconnected and submtted for repars at an authorzed servce centre. 3

!! - Do not use the unt n areas threatened wth excessve shocks, vbratons, dust, humdty, corrosve gasses and ols. - Do not use the unt n areas where there s rsk of explosons. - Do not use the unt n areas wth sgnfcant temperature varatons, exposure to condensaton or ce. - Do not use the unt n areas exposed to drect sunlght. - Make sure that the ambent temperature (e.g. nsde the control box) does not exceed the recommended values. In such cases forced coolng of the unt must be consdered (e.g. by usng a ventlator). The unt s desgned for operaton n an ndustral envronment and must not be used n a household envronment or smlar. 2. GENERAL CHARACTERISTICS Man task of SPP-N118 s measurement of nstantaneous flow (flow rate), and countng of total flow (e.g. passage of flud or gas), The devce can be used as regulator, to control ndustral process. Measurement of nstantaneous flow can be ndcated n range: 0 to 9999 (plus decmal pont) and can be expressed n combnaton of two cubc measures (ltre and m 3 ) and three tme measures (second, mnute, hour). Total flow can be ndcated n range from 0.000 to 4294967295.999999 m 3 wth maxmum resoluton of 0.001 L. SPP-N118 can cooperate wth flow sensors wth current output (0-20mA or 4-20mA). Sensors can be powered from sensor supply output (stablzed, 24VDC +5%, -10% 100mA). The devce s equpped n 1 or 2 relay outputs or OC-type outputs, whch can be drven due to nstantaneous flow, total flow or batcher counter value. Optonally SPP-N118 wth one relay output (or OC-type output) can be equpped wth actve current output, passve solated current output or actve voltage output. Buld n RS 485 nterface enables access to all nternal regsters, and supports MODBUS RTU communcaton protocol. The controller can be ordered n two power supply versons. The devce has 5 buttons beng used for man presets programmng. To get hgh protecton level, the keyboard s mounted under transparent cover. To allow user to change presets wthout openng the cover, an IR sensor s mounted. Remote controller contans basc functons to handle menu of the devce (note, that remote controller s not a part of the SPP- N118 set t s an addtonal equpment). Addtonal features: alarm preset; alarm sgnal s released when measurement exceeds measurement range drect access to relays thresholds settngs, wthout password, batcher mode. 4

3. TECHNICAL DATA Power supply voltage (dependng on verson) External fuse (requred) Power consumpton 85...230...260V AC/DC; 50 60 Hz (separated) or 19...24...50V DC and 16...24...35V AC (separated) T - type, max. 2 A max. 5 VA @ 85 260V AC/DC max. 5 VA @ 16V 35V AC max. 5 W @ 19V 50V DC Current nput Current measurement accuracy Measurement nput resstance: 0 20 ma, 4 20 ma overload protected, maxmum nput current about 40 ma ± 0,1% @ 25 C; ± one dgt (for 0 20 ma range) 50 Ω Accepted prolonged nput overload: 20% Programmable nput low level: hgh level: not separated 0V 1V 10V 30V (about. 12 ma @ 24V) Sensor power supply output 24V +5%, -10% / max. 100 ma, stablzed Relay output 0, 1 or 2 NO, 1A/250V AC (cos ϕ = 1) OC-type output 0, 1 or 2; 30mA / 30VDC / 100mW Actve current output (optonal, for one relay or one OC-type output verson only) Load resstance max. range max. 0 24 ma 700 Ω Passve solated current output (optonal, for one relay or one OC-type output verson only) range max. 2.8 24 ma Supply voltage Us = 9.5 36V Load resstance max. (Us 9.5V) / 24mA [kω] 5

Actve voltage output (optonal, for one relay or one OC-type output verson only) Load resstance mn. range max. 0 11V 2000 Ω Instantaneous flow range 0 9999, plus decmal pont Temperature stablty 50 ppm / C Instantaneous flow precson Selected from range: 0 0.000 Instantaneous flow unt L or m 3 per mn. or sec. or hour Total flow range 4 294 967 295. 999 999 m 3 Total flow precson Selected from range: 0 0.000 Total flow unt L or m 3 Batcher counter range 65535.999999 m 3 Batcher counter precson Selected from range: 0 0.000 Batcher counter unt L or m 3 Number of batches counter range 0 999999 Communcaton nterface Baud rate Dsplay Data memory RS 485, 8N1 and 8N2, Modbus RTU, not separated 1200 bt/s 115200 bt/s LED, 6 dgt, 13mm heght, red non-volatle memory, EEPROM type Protecton level IP 67 Housng type Housng materal Housng dmensons wthout glands: wth glands: Operatng temperature Storage temperature Humdty Alttude wall mounted ABS + fbreglass 110 x 80 x 67 mm 110 x 105 x 67 mm 0 C to +50 C or -20 C to +50 C -10 C to +70 C or -20 C to +70 C 5 to 90% no condensaton up to 2000 meters above sea level Screws tghtenng max. torque 0,5 Nm Max. connecton leads cross secton 3 mm 2 (for connectors 1 6) or 2 mm 2 (for connectors 7 16) 6

Safety requrements accordng to: PN-EN 61010-1 nstallaton category: II polluton degree: 2 voltage n relaton to ground: 300V AC nsulaton resstance: >20MΩ nsulaton strength between power supply and nput/output termnal: 1mn. @ 2300V nsulaton strength between relays termnal: 1mn. @ 1350V EMC accordng to: PN-EN 61326-1! Ths s a class A unt. In housng or a smlar area t can cause rado frequency nterference. In such cases the user can be requested to use approprate preventve measures. 4. DEVICE INSTALLATION The unt has been desgned and manufactured n a way assurng a hgh level of user safety and resstance to nterference occurrng n a typcal ndustral envronment. In order to take full advantage of these characterstcs nstallaton of the unt must be conducted correctly and accordng to the local regulatons.! - Read the basc safety requrements on page 3 pror to startng the nstallaton. - Ensure that the power supply network voltage corresponds to the nomnal voltage stated on the unt s dentfcaton label. - The load must correspond to the requrements lsted n the techncal data. - All nstallaton works must be conducted wth a dsconnected power supply. - Protectng the power supply clamps aganst unauthorzed persons must be taken nto consderaton. 4.1. UNPACKING After removng the unt from the protectve packagng, check for transportaton damage. Any transportaton damage must be mmedately reported to the carrer. Also, wrte down the unt seral number on the housng and report the damage to the manufacturer. Attached wth the unt please fnd: - user s manual, - warranty, 7

ø8.4 User manual - FLOW METER SPP-N118 4.2. ASSEMBLY!! - Dsconnect the power supply pror to startng assembly. - Check the connectons are wred correctly pror to swtchng the unt on. To nstall devce on the wall, a pnholes should be made. Fgure 4.1 presents dmensons of the devce and dstances between holes. The back sde of the devce has four mountng holes. Ths part of the case should be mounted to a wall by screws. 110 mm 67 mm 90 mm 80 mm 60 mm ø4.4 Fgure 4.1. Devce and assembly dmensons 4.3. CONNECTION METHOD Cauton! - Installaton should be conducted by qualfed personnel. Durng nstallaton all avalable safety requrements should be consdered. The ftter s responsble for executng the nstallaton accordng to ths manual, local safety and EMC regulatons. - The unt s not equpped wth an nternal fuse or power supply crcut breaker. Because of ths an external tme-delay cut-out fuse wth mnmal possble nomnal current value must be used (recommended bpolar, max. 2A) and a power supply crcut-breaker located near the unt. In the case of usng a monopolar fuse t must be mounted on the phase cable (L). - The power supply network cable dameter must be selected n such a way that n the case of a short crcut of the cable from the sde of the unt the cable shall be protected aganst destructon wth an electrcal nstallaton fuse. - Wrng must meet approprate standards and local regulatons and laws. 8

! - In order to secure aganst accdental short crcut the connecton cables must be termnated wth approprate nsulated cable tps. - Tghten the clampng screws. The recommended tghtenng torque s 0.5 Nm. Loose screws can cause fre or defectve operaton. Over tghtenng can lead to damagng the connectons nsde the unts and breakng the thread. - In the case of the unt beng ftted wth separable clamps they should be nserted nto approprate connectors n the unt, even f they are not used for any connectons. - Unused clamps (marked as n.c.) must not be used for connectng any connectng cables (e.g. as brdges), because ths can cause damage to the equpment or electrc shock. - If the unt s equpped wth housng, covers and sealng packng, protectng aganst water ntruson, pay specal attenton to ther correct tghtenng or clampng. In the case of any doubt consder usng addtonal preventve measures (covers, roofng, seals, etc.). Carelessly executed assembly can ncrease the rsk of electrc shock. - After the nstallaton s completed do not touch the unt s connectons when t s swtched on, because t carres the rsk of electrcal shock. Due to possble sgnfcant nterference n ndustral nstallatons approprate measures assurng correct operaton of the unt must be appled. To avod the unt of mproper ndcatons keep recommendatons lsted below. Avod common (parallel) leadng of sgnal cables and transmsson cables together wth power supply cables and cables controllng nducton loads (e.g. contactors). Such cables should cross at a rght angle. Contactor cols and nducton loads should be equpped wth ant-nterference protecton systems, e.g. RC-type. Use of screened sgnal cables s recommended. Sgnal cable screens should be connected to the earthng only at one of the ends of the screened cable. In the case of magnetcally nduced nterference the use of twsted couples of sgnal cables (so-called sprals ) s recommended. The spral (best f shelded) must be used wth RS-485 seral transmsson connectons. In the case of measurement or control sgnals are longer than 30m or go outsde of the buldng then addtonal safety crcuts are requred. In the case of nterference from the power supply sde the use of approprate antnterference flters s recommended. Bear n mnd that the connecton between the flter and the unt should be as short as possble and the metal housng of the flter must be connected to the earthng wth largest possble surface. The cables connected to the flter output must not run n parallel wth cables wth nterference (e.g. crcuts controllng relays or contactors). 9

Connectons of power supply voltage and measurement sgnals are executed usng the clampng connectors nsde of the unt s housng. a) b) max. 2 mm 6 mm max. 1.6 mm 5 mm Fgure 4.2. Recommended dmensons of cable strppng a) for bg connectors (1 to 6), b) for small connectors (7 to 16) Fgure 4.3. Method of connectng cables to the clampng connectors! All connectons must be made whle power supply s dsconnected! Flow sensor connected to current nput of flow meter should be nstalled accordngly to local regulatons, and recommendatons of the producer. Correct nstallaton and applcaton of flow sensor s essental for correct operaton of flow meter type SPP-N118. 10

RS - 485 programmable nput R1 (opton) R2 (opton) 16 15 14 13 12 11 10 9 8 7 6 5 GND DATA+ PE GND + 0/4-20mA n.c. n.c. + Uo - 24V (+5%, -10%) Imax = 100 ma 4 3 2 1 Power supply (dependng on verson) Fgure 4.4. Termnals descrpton (relay outputs) OC1, OC2: Umax = 30V DC, Imax = 30mA, Pmax = 100mW RS - 485 GND DATA- DATA- DATA+ PE programmable nput GND + 0/4-20mA n.c. n.c. + Uo - 24V (+5%, -10%) Imax = 100 ma OC1 (opton) - + 16 15 14 13 12 11 10 9 8 7 6 5 OC2 (opton) - + 4 3 2 1 Power supply (dependng on verson) Fgure 4.5. Termnals descrpton (OC-type outputs) 11

RS - 485 GND DATA+ PE programmable nput GND + 0/4-20mA n.c. n.c. + Uo - 24V (+5%, -10%) Imax = 100 ma R1 (opton) 16 15 14 13 12 11 10 9 8 7 6 5 ACTIVE current output (opton) - + 4 3 2 1 Power supply (dependng on verson) Fgure 4.6. Termnals descrpton (relay and actve current outputs) RS - 485 programmable nput R1 (opton) Passve, solated current output 4 20mA (opton) 16 15 14 13 12 11 10 9 8 7 6 5 GND DATA- DATA- DATA+ PE GND + 0/4-20mA n.c. n.c. + Uo - 24V (+5%, -10%) Imax = 100 ma 4 3 2 1 Power supply (dependng on verson) Fgure 4.7. Termnals descrpton (relay and passve current outputs) 12

RS - 485 GND DATA+ PE programmable nput GND + 0/4-20mA n.c. n.c. + Uo - 24V (+5%, -10%) Imax = 100 ma R1 (opton) 16 15 14 13 12 11 10 9 8 7 6 5 ACTIVE voltage output (opton) - + 4 3 2 1 Fgure 4.8. Termnals descrpton (relay and actve voltage outputs) Power supply (dependng on verson) RS - 485 GND DATA- DATA- DATA+ PE programmable nput GND + 0/4-20mA n.c. n.c. OC1: Umax = 30V DC, Imax = 30mA, Pmax = 100mW + Uo - 24V (+5%, -10%) Imax = 100 ma OC1 (opton) - + 16 15 14 13 12 11 10 9 8 7 6 5 ACTIVE current output (opton) - + 4 3 2 1 Fgure 4.9. Termnals descrpton (OC-type and actve current outputs) Power supply (dependng on verson) 13

RS - 485 GND DATA+ PE programmable nput GND + 0/4-20mA n.c. n.c. OC1: Umax = 30V DC, Imax = 30mA, Pmax = 100mW + Uo - 24V (+5%, -10%) Imax = 100 ma OC1 (opton) - + 16 15 14 13 12 11 10 9 8 7 6 5 Passve, solated current output 4 20mA (opton) 4 3 2 1 Power supply (dependng on verson) Fgure 4.10. Termnals descrpton (OC-type and passve current outputs) RS - 485 GND DATA- DATA- DATA+ PE programmable nput GND + 0/4-20mA n.c. n.c. OC1: Umax = 30V DC, Imax = 30mA, Pmax = 100mW + Uo - 24V (+5%, -10%) Imax = 100 ma ACTIVE OC1 voltage output (opton) (opton) - + 16 15 14 13 12 11 10 9 8 7 6 5 - + 4 3 2 1 Power supply (dependng on verson) Fgure 4.11. Termnals descrpton (OC-type and actve voltage outputs) 14

R1 R2 6 5 4 3 N L 2 1 FUSE FUSE N Dependng on verson: 85...230...260V AC/DC; 50 60 Hz or 19...24...50V DC and 16...24...35V AC Fgure 4.12. Connecton of power supply and relays L! Contacts of relay outputs are not equpped wth spark suppressors. Whle use the relay outputs for swtchng of nductve loads (cols, contactors, power relays, electromagnets, motors etc.) t s requred to use addtonal suppresson crcut (typcally capactor 47nF/ mn. 250VAC n seres wth 100R/5W resstor), connected n parallel to relay termnals or (better) drectly on the load. In consequence of usng the suppresson crcut, the level of generated electromagnetc dsturbances s lower, and the lfe of relay contacts rses. a) b) L L 6 5 6 5!! N Fgure 4.13. Examples of suppresson crcut connecton: a) to relay termnals; b) to the nductve load N 15

Uo OC1 8 7 6 5 + - - + Logc controller - + voltage nput 24V Uo 8 7 + - R 2k2 LED 10 ma OC1 6 5 - + Fgure 4.14. Example of OC-type outputs connecton ACTIVE current output - + 4 3 Logc controller + Current nput 0-20 ma - Fgure 4.15. Example of actve current outputs connecton (for devce wth actve current output only) Uo 8 7 + - + - Logc controller Current nput 4-20mA PASSIVE Current output 4 3! Isolaton loss Fgure 4.16. Example of passve current outputs connecton (for devce wth passve current output only) 16

ACTIVE voltage output - + 4 3 Logc controller + voltage nput 0-10V - Fgure 4.17. Example of actve voltage outputs connecton (for devce wth actve voltage output only) 4.4. MAINTENANCE The unt does not have any nternal replaceable or adjustable components avalable to the user. Pay attenton to the ambent temperature n the room where the unt s operatng. Excessvely hgh temperatures cause faster ageng of the nternal components and shorten the fault-free tme of unt operaton. In cases where the unt gets drty do not clean wth solvents. For cleanng use warm water wth small amount of detergent or n the case of more sgnfcant contamnaton ethyl or sopropyl alcohol.! Usng any other agents can cause permanent damage to the housng. Product marked wth ths symbol should not be placed n muncpal waste. Please check local regulatons for dsposal and electronc products. 17

5. FRONT PANEL DRIPTION Thresholds exceedng LED ndcators (R) nfrared recever R1 R2 Σ total flow mode and batchng mode LED ndcator (Σ) dsplay Σ RESET programmng pushbuttons Symbols and functons of push-buttons: Symbol used n the manual: [/] Functons: Enter to man menu ( press and hold by at least 2 sec.) Ext the current level and Enter to prevous menu (or measure mode) Cancel the changes made n parameter beng edted Symbol used n the manual: [/] Functons: Start to edt the parameter Enter to the sub-menu, Confrmaton of changes made n parameter beng edted Whle batcher mode: pause/start batchng. Symbol used n the manual: [^] [v] Functons: Change of the present menu, Modfcaton of the parameter value, Swtchng of the dsplay between relay thresholds and number of batches counter Σ RESET Symbol used n the manual: [Σ /RESET] Functons: Swtchng of the dsplay between total and nstantaneous measurements or batcher counter (whle batcher mode only) Zerong the currently dsplayed counter (press and hold by at least 2 sec.), the zerong must be confrmed by [] button. 18

6. PRINCIPLE OF OPERATION After turnng the power supply on, devce ID and software verson are showed on the dsplay, next the controller goes to the measurement mode. 6.1. MEASUREMENT MODE In the measure mode, devce dsplays nstantaneous measurement (flow value or tme per one unt of flow, dependng on F or P parameter value) equvalent to nput current, total flow or batcher counter value. Instantaneous flow (flow rate) s dsplayed n unts defned by parameter F unt (L or m 3 ) and Ftunt (mn., sec. or h), wth resoluton defned by Pont (max. 3 dgts after decmal pont). Devce converts measured current to selected unts accordngly to converson characterstc selected by user. The measurement range equal to the nomnal range s called: nomnal measurement range, and the measurement range equal to the extended nomnal range s called: permssble measurement range (Fgure 6.1, 6.2). Lo r parameter H r parameter nomnal measurement range 4 ma 20 ma permssble measurement range Fgure 6.1. Defntons of measurement ranges n mode 4 20mA If the result of measurement exceeds the permssble measurement range, warnng -H- or -Lo- s dsplayed rather than nput sgnal, depends on exceeded value (see descrpton of Lo r H r parameters, paragraph FLouu menu). H r parameter nomnal measurement range 0 ma 20 ma permssble measurement range Fgure 6.2. Defntons of measurement ranges n mode 0 20mA 19

If nput current range s strongly overloaded, devce can dsplay mproper results Whle tme per one unt of flow s dsplayed (parameter F or P = PErod ): If flow value equals 0, then message -STOP- s dsplayed. If value of perod s too hgh to be ftted on 6 dgts, message -OvLd- (Overload) s dsplayed nstead of the result. If flow value s dfferent than 0 but value of perod s too small to be ftted on 6 dgts, message -UnLd- (Underload) s dsplayed nstead of the result. Total flow s dsplayed n unts defned by parameter t unt (L or m 3 ), wth resoluton defned by parameter t PrEc (max 3 dgts after decmal pont). If total flow counter overflows, warnng tot ov s dsplayed alternatvely wth maxmum counter value. Total flow counter can be zeroed usng Clrtot opton of total submenu, usng [Σ ] button (press and hold by at least 2 sec.), electrcally va programmable nput or va RS-485 nterface by wrtng of value 0000h to any of total flow counter result regsters. Zerong by [Σ ] button can be actvated usng m CLr opton of total submenu. Zerong va programmable nput can be actvated usng Func opton of Pr np submenu. Parameter CutoFF, allows to defne nput current value, below whch total amount of flow s not counted (ncremented). If CutoFF s set to value dfferent than zero and f nput current s lower than ths value, then nstantaneous flow (flow rate) s dsplayed, but TOTAL COUNTER IS NOT INCREMENTED. Cutoff Threshold CT s defned by formulas below: " CutoFF" 20mA CT = 100 for 0 20mA nput " CutoFF" 16mA CT = 4 ma for 4 20mA nput 100 Batchng counter value s dsplayed n unts defned by parameter b unt (L or m 3 ), wth resoluton defned by parameter b PrEc (max 3 dgts after decmal pont). If batcher counter overflows, warnng bat ov s dsplayed alternatvely wth maxmum counter value. Batchng counter can be zeroed usng CLrbAt opton of batch submenu, usng [Σ ] button (press and hold by at least 2 sec.), electrcally va programmable nput or va RS-485 nterface by wrtng of value 0000h to any of batcher counter result regsters. Zerong by [Σ ] button can be actvated usng m CLr opton of batch submenu. Zerong va programmable nput can be actvated usng Funct opton of Pr np submenu. 20

Swtchng between current flow rate, total flow counter and batcher counter can be done by pressng [Σ ] button. Knd of dsplayed value s sgnalsed by Σ LED. It lghts, whle total flow s dsplayed. If batcher counter s dsplayed then Σ LED s pulsng. Batchng counter can be dsplayed whle batcher mode only (set SourCE = bat n relay1 submenu). Functons of [^] and [v] buttons depend on knd of presently dsplayed value: If nstantaneous flow (flow rate) s dsplayed ( LED marked Σ s off) or batcher counter value ( Σ LED s pulsng), user can check man threshold values and number of batches counter (whch ndcates how many tmes batcher was started). After pressng [^] or [v] buttons, name of the threshold (e.g. relpr1 ) and ts value or batcnt label and number of batches counter wll be dsplayed on the dsplay n alternatng mode. If [^] or [v] wll be pressed n 5 sec agan, the next threshold wll be dsplayed, else the devce comes back to the measurement mode. If a free access s enabled (see descrpton of SECu menu), user can change the value of partcular threshold pressng button [] (see: PARAMETERS EDITION). Usng [Σ ] button whle number of batches counter s dsplayed and confrm CLEAr? message by [] button causes zerong number of batches counter. If partcular parameter has been changed and confrmed n quck vew mode, ts new value s dsplayed n alternatng mode wth parameter name by few seconds. Confrmed changes may be checked or user can swtch vewed parameter pressng [^] or [v] button. Number of batches counter s ncremented after each start of batchng process (every frst start after batcher counter zerong). If batcher counter value s dsplayed ( Σ LED s pulsng) and counter value exceeds 6 dgts, then decmal pont of the most left dgt s pulsng. To vew most sgnfcant dgts, t s requred to decrease resoluton or/and change unt to m 3. If total flow counter value s dsplayed ( LED marked Σ s on), and ts length exceeds 6 dgts, buttons [^] and [v] enable swtchng between more and less sgnfcant dgts. Postons of currently dsplayed dgts are sgnalzed by flashng decmal ponts (see example below). 21

Example of swtchng between less and more sgnfcant dgts of total flow result. Let, total counter result be equal 1236789876543.21: whle less sgnfcant 6 dgts are dsplayed, flashng most left decmal pont sgnalzes that result s longer than 6 dgts, to show more sgnfcant dgts press [^], whle medum dgts are dsplayed both most left and most rght decmal ponts are flashng (Fgure 6.3). Most rght decmal pont sgnalzes than result has less sgnfcant dgts to see these dgts press [v] button. Most left decmal pont sgnalzes addtonal more sgnfcant dgts. Press [^] button to see these dgts. whle most sgnfcant dgts are dsplayed, most rght decmal pont s flashng, and sgnalsng that result has less sgnfcant dgts, to see these dgts press [v]. [Σ ] [Σ ] [Σ ] to nstantaneous flow dsplay mode to nstantaneous flow dsplay mode to nstantaneous flow dsplay mode Fgure 6.3. Swtchng between dgts (screens) of total flow result. All accessble parameters (e.g. pulse nput settngs, decmal pont poston) can be changed by enterng the menu (see: DEVICE PROGRAMMING). Use the local keyboard or the remote controller to do t. (Note: all parameters can be remote changed va RS-485 nterface). Countng of pulses and controllng or relays s realsed regardless of operaton mode (after enterng to menu mode countng and controllng s contnued n background. 6.2. DETECTION OF THE PEAK VALUES The SPP-N118 flow meter s equpped wth peaks detecton functon. It can detect a peaks of the nput sgnal and dsplay ther values. Presets connected wth ths functon are placed n HOLd menu (see descrpton of HOLd menu). The detecton of the peak can be done f the measured sgnal rases and drops of value at least equal to parameter PEA. Detected peaks are dsplayed durng the tme defned by parameter tme. If a new peak wll be detected whle one s dsplayed, ths new peak wll be dsplayed and dsplay tme counter wll be cleared (Fgure 6.4). If no peaks are detected whle tme tme elapses, devce starts to show the current value of nput sgnal agan. If HdS = HOLD then settng parameter "tme"=0.0 causes holdng peak value untl [] button s pressed. If HdS = real then value "tme"=0.0 means no holdng. Dsplayng peak value s sgnalzed by flashng most rght decmal pont. The relays/leds and the analogue output can be controlled depend on the current value of nput sgnal or the peak value (see HOLd menu). 22

measure tme tme PEA PEA real measurement result dsplay value tme Fgure 6.4. Process of peaks detecton 6.3. CONTROL OF THE RELAY OUTPUTS The control of the object (measured sgnal) s done due to nstantaneous flow value (current flow rate), total flow counter value or batcher counter value, and s realzed va relay outputs. Front panel LEDs named R ndcates the state of partcular relay output. If devce s not equpped wth one or more relay outputs, menus refer to ths relays are avalable, but apply to LED ndcators only. In such case LEDs ndcates exceedng of partcular thresholds. Modes of the control can be changed depend on the values of parameters SourCE, SEt P, SEt P2, HYSt, mode, t on, t off, unt and ALArmS (avalable n relay1 relay2 menu). If relay s controlled due to total flow counter value ( SourCE = tot ), addtonal parameters are avalable n menu. Parameters t PrEC and t unt defnng the unt and resoluton of dsplayed thresholds and hysteress of selected relay. If relay s controlled due to batcher counter value ( SourCE = bat ), n addton b PrEC and b unt parameters are avalable n menu but parameters: SEt P2, HYSt, mode, t on, t off, unt are unavalable. Parameters b PrEC and b unt defne the unt and resoluton of dsplayed thresholds and hysteress of selected relay. Depend on mode parameter, relays can be not used or controlled over one or two thresholds values. If one threshold s used (Fgure 6.5) the relay can be turned on ( mode = on ) or off ( mode = off ) when the nput sgnal value s contaned n zone A. If two thresholds are used (Fgure 6.6) the relay wll be turned on when value of nput sgnal s contaned n zone A ( mode = n ) or zone B ( mode = out ) and turned off f the sgnal s contaned n the second one. 23

state of relay/led SEt P parameter zone B zone A measure HYSt parameter Fgure 6.5. One threshold control of the relay/led outputs state of relay/led SEt P or SEt P2 parameter zone B zone A zone B HYSt parameter measure Fgure 6.6. Two threshold control of the relay/led outputs The relay outputs and LEDs (named R) can be controlled depend on both - the current value and the peak value (when peak detecton s actve, for flow rate only) of the nput sgnal. 24

6.3.1. One threshold mode Fgure 6.7 presents the prncple of relay outputs operaton for one threshold mode, and an example values of other parameters. a) dsplayed value zone A A measured t A t B t C sgnal t D B B OFF B ON SEt P parameter (expected sgnal value) b) c) d) e) zone B relay state (mode = on t on = 0 t off = 0) relay state (mode = off t on = 0 t off = 0) relay state (mode = on t on > 0 t off > 0) relay state (mode = off t on > 0 t off > 0) closed open open closed HYSt parameter (allowed sgnal devaton) Descrpton: A, B, C, D - ponts where measured sgnal exceeds border values (expected value ± allowed devaton) B ON,B OFF,D ON,D OFF - relays state changes moments: (for t on > 0, t off > 0) t A, t B, t C, t D - tme perods whle nput sgnal s n zone A or zone B C t on parameter open t off parameter open closed closed t off parameter D t on parameter D OFF D ON tme tme tme tme tme Fgure 6.7. Prncple of LED/relay output operaton for one threshold mode Parameter SEt P sets a threshold of the relay, and parameter HYSt sets a hysteress of the relay (Fgure 6.7 a). The relay can change ts state only when nput value exceeds (over or under) border value and t A,t B,t C,t D tmes (Fgure 6.7) are bgger than the tme defned by parameters t on, t off and unt. Border values means values equal threshold+hysteress and threshold-hysteress respectvely. If t on and t off parameters are set to 0, then the relay state wll be changed as soon as nput value exceeds any of the border values (see ponts A and C, Fgure 6.7 a, b, c). If values of t on or/and t off are postve, then relay state wll be turned on f the nput value exceeds the border values and stay bgger (or lower) durng at least t on (see ponts B ON, D ON, Fgure 6.7 a, d, e). Smlarly, the relay wll be turned off f tme t off elapse snce the nput sgnal value exceeds any of the border values (see ponts B OFF, D OFF, Fgure 6.7 a, d, e). 25

If t A,t B,t C or t D (when nput sgnal stay n zone A or zone B) are lower than parameters t on or t off, the relay wll not change ts state (see ponts A and C, Fgure 6.7 a, d, e). The state of relay output whle the nput value exceeds the border values (ponts A, B, C, D) s descrbed by parameter mode. The relay can be turned on ( mode = on ), or turned off ( mode = off ) when nput sgnal value s contaned n zone A (Fgure 6.7 a). The parameter ALArmS allow user to set the relay output behavour n crtcal stuatons (e.g. Input values exceeds permssble nput range). User can select that the relays wll be turned on, turned off,or not changed n crtcal stuatons. All parameters connected wth relay outputs are descrbed n paragraph relay1 menu. 6.3.2. Two thresholds mode dsplayed value t A t B t C t D measure zone B C OFF C ON d sgnal C t E HYSt parameter B ON a) zone A A B B OFF D E E OFF SEt P or SEt P2 parameter E ON HYSt parameter zone B b) c) d) e) relay state (mode = n t on = 0 t off = 0) relay state (mode = out t on = 0 t off = 0) relay state (mode = n t on > 0 t off > 0) relay state (mode = out t on > 0 t off > 0) closed open t on parameter t off parameter open closed closed open t off parameter t on parameter closed open t on parameter t off parameter tme tme tme tme tme Descrpton: A, B, C, D, E - ponts where measured sgnal exceeds border values (expected value ± allowed devaton) B ON,B OFF,C ON,C OFF,E ON,E OFF - relays state changes moments: (for t on > 0, t off > 0) t A, t B, t C, t D, t E - tme perods whle nput sgnal s n zone A or zone B Fgure 6.8. Prncple of LED/relay output operaton for two thresholds mode 26

Fgure 6.8 presents the prncple of relay outputs operaton for two thresholds mode, and an example values of other parameters. In ths mode parameter SEt P2 s accessble n common wth SEt P2, ths parameter descrbes a second threshold of the relay output. The parameters HYSt, mode, t on, t off, unt and ALArmS are connected wth both SEt P and SEt P2 thresholds. Whle the controllng process, the relay output changes ts state depends of both SEt P and SEt P2 thresholds n smlar way as t was descrbed n one threshold mode. If two threshold mode s used, mode parameter defnes state of the relay output when the nput value occurs n a partcular zone defned by border values of both thresholds. The relay can be turned on f the nput value s contaned n zone A ( mode = n ) or zone B ( mode = out ) and turned off f t s contaned n the second one (Fgure 6.8). The sequence of thresholds SEt P and SEt P2 can be set n any order, due to the control of relay outputs s done depend on dfference between thresholds values (zone A ) and outsde of threshold values (zone B). 6.3.3. Batcher mode and PrE r1 mode To swtch the devce nto a batcher mode n submenu relay1 user should set SourCE = bat. There are followng parameters related to R1 n ths mode: SourCE, SEt P, b PrEC, b unt and ALArmS. Parameters SEt P, b PrEC, b unt defne quantty of batched medum, dsplayng precson and the unt respectvely. Parameter ALArmS allows to set behavour of relay output n crtcal stuatons. Pressng [] button whle devce s n batcher mode causes start of batchng and set of relay R1. Successve pressngs of [] button cause pause/restart of batchng and swtchng R1 relay off/on. When batcher counter reaches value equal to SEt P then relay R1 s swtched off. If batcher counter s overloaded then ts maxmal value s dsplayed alternatvely wth bat ov message. Overload of ths counter do not change state of relays. To start another pourng cycle, batcher counter must be cleared and next new cycle ntated by pressng [] button. Batcher counter can be zeroed usng CLrbAt opton of batch submenu, usng [Σ ] button (press and hold by at least 2 sec.), electrcally va programmable nput or va RS-485 nterface by wrtng of value 0000h to any of batcher counter result regsters. After zerong of batcher counter, currently realzed pourng s stopped and relays swtched off. Zerong electrcally va programmable nput causes start of the next batchng automatcally. In other cases to start of the next batchng t s requred to use [] button or wrte of value 0001h to any of batcher counter result regsters usng RS-485 nterface. To stop batchng t s requred to use [] button or wrte of value 0002h to any of batcher counter result regsters usng RS-485 nterface. Due to delays whle closng/openng the valves decreasng of SEt P parameter (defnng volume of batched medum) can be necessary. Fact that zerong of the batcher counter usng [Σ ] stops the batchng process and swtches off the relays can be used for calculatng desred value of SEt P. Note, that f relay whch s controlled by batcher counter s used for drvng the valve, then value counted after zerong of the batcher counter tells how much of medum flows through valve durng closng. 27

Number of batches s counted by another counter (number of batches counter) and stored nto the non-volatle memory. To dsplay the value of ths counter use [^] or [v] button. After that message batcnt and content of number of batches counter are dsplayed alternatvely. To clear ths counter press [Σ ] button whle devce dsplays t and confrm by pressng [ETNER] button. Every ntalsaton of batcher (start of batchng) causes ncrementaton of number of batches counter. If parameter SourCE of relay (other than R1) s set to PrE r1 then parameters SEt P and SEt P2 of partcular relay means control advance of ths relay n relaton to threshold of relay R1 ( SEt P parameter n relay1 submenu). In other words, frst threshold of relay R2 equals SEt P R1 SEt P R2 and value of ts second threshold equals SEt P R1 SEt P2 R2. Thresholds of other relays (f avalable) are calculated n the same way. Relays workng n ths mode can be used to control addtonal valve of the batcher. If relay other than R1 should change ts state at the end of batchng (smultaneously at turnng relay R1 off), t s requred to set mode = n or out and set zero value for one of ts thresholds ( SEt P or SEt P2 ). The clearng and startng of next batchng can be run automatcally, wth defned delay between successve doses. To enable ths feature t s necessary to set parameters: A res (autoreset functon), A dly and Atunt (desred delay and unt of tme) of batch menu. 6.3.4. Use of the batcher counter as a marker Ths feature allows to use the batcher counter for cyclc control of relays (except R1) by volume of flowng medum (e.g. swtchng relay on after counter reaches 9 ltres and swtch t off after counter reaches -10 ltres, n other words generate one pulse every 10 ltres. For example to use R2 as marker t s requred to set counter as follow: 1. Set relay R1 to batcher mode ( SourCE = bat ). 2. Set SEt P of relay R1 to desred cyclc volume (e.g. 10 ltres). Ths value defnes cycle duraton expressed n unts of flow (not a tme) because cycle tme depends on flow speed. 3. Set relay R2 as batcher pre-trg ( SourCE = PrE R1 ). 4. Set mode of R2 accordng to desred mode of operaton (n ths example mode = on, however t can be also set to other modes). Dependng on ths parametrer, relay wll be no or off n desred phase of the cycle. 5. Set SEt P (and SEt P2 f mode = n or mode = out ) of relay R2 accordng to desred phase wthn t should be on (and off). These values must be lower than threshold of R1. Note, that tme of actve state of R2 depends on flow speed. It s recommended to set SEt P of R2 to half of R1 threshold but t s not necessary (n ths example set 1, what causes that R2 wll be actvated when batcher counter reaches 9 ltres ). 6. Swtch on autoreset of batcher counter ( A res = on ) and set A dly to 0. Note that R1 s swtched off for a short perod every tme batcher counter s cleared, what can be used to any purpose. 28

7. DEVICE PROGRAMMING The devce menu allow user to set all parameters connected to operaton of measurement nput, control modes, crtcal stuatons behavour, communcaton va RS-485 and access settngs. The meanng of the partcular parameters s descrbed n paragraph DRIPTION. Some of the parameters can be accessed wthout menu enterng (quck vew mode). If current flow s dsplayed (LED named Σ s off) or batcher counter value (LED named Σ s pulsng) user can check man thresholds values and number of batches (whch ndcates how many tmes batcher was started). After pressng [^] or [v] button, name of the threshold (e.g. relpr1 ) and ts value or batcnt label and number of batches wll be dsplayed on the dsplay n alternatng mode. If [^] or [v] wll be pressed n 5 sec agan, the next threshold wll be dsplayed, else the devce comes back to the measurement mode. If a free access s enabled (see descrpton of SECU menu), user can change the value of partcular threshold pressng button [] (see: PARAMETERS EDITION). If partcular parameter has been changed and confrmed n quck vew mode, ts new value s dsplayed n alternatng mode wth parameter name by few seconds. Confrmed changes may be checked or user can swtch vewed parameter pressng [^] or [v] button. 7.1. PROGRAMMING To enter man menu (beng n the measurement mode) operator must to press and hold at least 2 sec. [/] button. If the user password s defned (see parameter SEtcod, menu SECU ), operator have to enter correct one before proceedng to menu optons. Enterng of the passwords s smlar to the edton of numerc parameters (see: PARAMETERS EDITION ), however presently edtng dgt s showed only on the dsplay, other dgts are replaced by - sgn. After enterng of last dgt of the password frst menu poston wll be dsplayed (f the password s correct) or warnng Error n other case.! Pay attenton when devce parameters are beng changed. If t s possble, turn off controlled nstallaton (machne). 29

Functons of the buttons whle sub-menu and parameters choce: Selecton of sub-menu or parameter for edtng. Name of selected tem (submenu or parameter) s dsplayed. or Operaton of [] button depend on present menu poston: f the name of some sub-menu s dsplayed - enter ths sub-menu; name of the frst parameter (or next level sub-menu) s dsplayed, f the name of some parameter s dsplayed - enter the edton of ths parameter; present value of the parameter s dsplayed, [/] button allow user to ext present menu level and goes to upper level menu (or measurement mode). After about 1 mn. snce last use of the buttons, devce exts the menu mode and returns to the measurement mode (only f no parameters are n edtng mode). 7.2. PARAMETERS EDITION To start edton of any parameter user should select name of desred one usng [^] [v] buttons and then press []. 7.2.1. Numerc parameters (dgt change mode) Numercal parameters are dsplayed as decmal numbers. The mode of ts new value enterng depends on chosen edt method ( see parameter Edt ). In mode by dgt ( Edt = dg ) pressng one of the keys [^] or [v] causes change of current poston (flashng dgt) or the sgn (+/-). Short pressng of the [] button causes change of the poston (dgt). Press [] at least 2 seconds to accept the changes, after that queston SEt? s dsplayed, and user must to confrm (or cancel) the changes. To conform changes (and story t n EEPROM) press [] button shortly after SEt? s dsplayed. To cancel the changes press [] button shortly after SEt? s dsplayed. After that devce returns to the menu. 7.2.2. Numerc parameters (slde change mode) In slde change mode ( Edt = Sld ), buttons [^] and [v] has dfferent functons. To ncrease edted value press (or press and hold) [^] button only, the ncreasng became quckest as long as button [^] s pressed. To slow down the ncreasng, button [v] can be used. If [v] s pressed shortly (and button [^] s stll pressed), ncreasng slow down for a moment only, f [v] s pressed and held whle button [^] s stll pressed the ncreasng slow down and wll be kept on lower speed. To decrease edted value press (or press and hold ) [v] button only. The decreasng became quckest as long as button [v] s pressed. To slow down the decreasng, button [^] can be used. If [^] s pressed shortly (and button [v] s stll pressed), decreasng slow down for a moment only, f [^] s pressed and held whle button [v] s stll pressed the decreasng slow down and wll be kept on lower speed. Press [] at least 2 seconds to accept the changes, after that queston SEt? s dsplayed, and user must to confrm (or cancel) the changes. To conform changes (and story t n EEPROM) press [] button shortly after SEt? s dsplayed. To cancel the changes press [] button shortly after SEt? s dsplayed. After that devce returns to the menu. 30

7.2.3. Swtch parameters ( LIST type) Swtch parameters can be descrbed as a sets of values (a lsts) out of whch only one of the optons avalable on the lst can be selected for the gven parameter. Optons of swtchng parameter are selected usng [^], [v] keys. Short pressng of [] causes n dsplayng of the acknowledge queston ( SEt? ). If key [] s pressed agan, the changes are accepted, stored n EEPROM end the edton process fnshed. Pressng the key [] after SEt? causes n cancellng of made changes and returnng to menu. Functons of buttons when edtng numerc and swtchng parameters: Whle edtng numerc parameter: change of current (flashng) dgt slde change of value (acceleraton, deceleraton, drecton change) Whle edtng swtch parameter - selecton of swtch parameter. or If numercal parameter s beng edted, a short press of [] button change edted poston. A long press of [] button (at lest 2 sec.) causes of dsplay a SEt? ask, whch allow user to make sure f change of the parameter value s correct. If swtch parameter s beng edted, a short press of [] button causes of dsplay a SEt? ask. When [] button s pressed agan (whle SEt? s dsplayed) the new value of the parameter s stored n EEPROM memory. Pressng ths button operator can cancel the changes done up to now (f they were not approved by [] button after the SEt? ask) and come back to menu 7.3. DRIPTION - - - - - password checkng. If some password dfferent from 0000 s set, then every enter to man menu follows the enterng of password. If entered password s correct then frst menu poston wll be dsplayed else warnng Error, and unt returns to measurement mode. Due to problem wth drect dsplayng of m letter, t s exchanged wth specal sgn. Independently n user manual letter m s used to make t more readable (example: mode ). 7.3.1. relay1 menu Ths menu allows to confgure the operaton mode of relays and LEDs marked R (e.g. R1 ). If there are few relay outputs avalable, then every output has ts own confguraton menu (e.g. menu relay2 for relay (LED) R2 ). Prncple of the relays operaton s descrbed n paragraph CONTROL OF THE RELAY OUTPUTS. The relay outputs and LEDs (named R) can be controlled by due to current flow rate, stored peak value, total flow counter or batcher counter, If devce s not equpped wth one or more relay outputs, menus refer to ths relays are avalable, but apply to LED ndcators only. In such case LEDs ndcates exceedng of partcular thresholds. 31

SourCE - parameter defnng knd of result usng to control state of ths relay. It can be set to one of three values: Flo bat tot - relay s controlled due to current flow rate value or stored peak of flow rate (see Hold menu), - relay s controlled due to batcher counter value, - relay s controlled due to total counter result. bat opton s avalable for relay R1 only. For the rest of relays PrE r1 opton s avalable. PrE r1 opton means controllng n relaton to SEt P of relay R1 (see CONTROL OF THE RELAY OUTPUTS). SEt P SEt P2 HYSt - frst threshold of the relay (range 0 999999). Threshold s the medum value of relay hysteress. Whle batcher mode ( SourCE = bat ) SEt P value means the quantty of pourng matter. - second threshold of the relay (range 0 999999). Ths threshold s accessble when mode parameter s set to n or out value. Threshold s the medum value of relay hysteress. - hysteress of relay (range 0 99999). Full hysteress of the relay s equal to 2x HYSt parameter. The relay state can change when an nput sgnal s out of threshold-hysteress to threshold+hysteress zone. Presented parameters should be set to ensure that SEt P + HYSt, SEt P2 + HYSt, SEt P - HYSt or SEt P2 - HYSt do not exceeds the measure range. Addtonally, n two threshold mode ( mode = n or out ), the hysteress for both thresholds must not cover each other (n other case relay can't change ts state). b PrEc - decmal pont poston (dsplayng precson of the relay thresholds ) when relay s controlled due to batcher counter result. It can be set to: 0 0.0 0.00 0.000 Decmal pont poston s changed by [^], [v] buttons. b unt - the unt of relay thresholds when relay s controlled due to batcher counter result. It can be set to: lt. - Ltres m 3 - cubc meters 32

Parameters b PrEc and b unt are avalable only for relay R1 whle batcher mode ( SourCE = bat ) s set. When current flow rate s used to control relays, the unt and precson of the thresholds and hysteress are defned by parameters F unt, Ftunt and F PrEc of menu Flouu. When relay (other than R1) s controlled n relaton to SEt P threshold of relay R1 ( SourCE = PrE r1 ), the unt and precson of the thresholds and hysteress of relay (other than R1) are defned by parameters b unt and b PrEC parameters avalable n submenu of relay R1. t PrEc - decmal pont poston (dsplayng precson of the relay thresholds ) when relay s controlled due to total flow counter result. It can be set to: 0 0.0 0.00 0.000 Decmal pont poston s changed by [^], [v] buttons. t unt - the unt of relay thresholds and hysteress when relay s controlled due to total flow counter result. It can be set to: lt. - Ltres m 3 - cubc meters Parameters t PrEc and t unt are avalable only f total flow counter s used to control relay output ( SourCE = tot ). When current flow rate s used to control relays, the unt and precson of the thresholds and hysteress are defned by parameters F unt, Ftunt and F PrEc of menu Flouu. When relay (other than R1) s controlled n relaton to SEt P threshold of relay R1 ( SourCE = PrE r1 ), the unt and precson of the thresholds and hysteress of relay (other than R1) are defned by parameters b unt and b PrEC parameters avalable n submenu of relay R1. mode - relay operaton mode: noact - the relay s not actve (permanent turned off) on - one threshold mode, the relay s turned ON when nput sgnal exceeds SEt P + HYSt value, and s turned off back when the nput sgnal became lower than SEt P - HYSt, off n - one threshold mode, the relay s turned OFF when nput sgnal exceeds SEt P + HYSt value, and s turned on back when the nput sgnal became lower than SEt P - HYSt, - two threshold mode, the relay s turned ON when the nput sgnal s bgger than lower threshold + HYSt and lower than bgger threshold - HYSt, and turned off when the nput sgnal s contaned n the second zone. The bgger threshold means bgger one of SEt P and SEt P2 thresholds, the lower threshold means lower one of SEt P and SEt P2 thresholds. 33