OPTIVENT ULTRA VAV damper CONTROL UNIT FOR MODBUS 227VMZ-MB

Transcription

1 OPTIVENT ULTRA VAV damper CONTROL UNIT FOR MODBUS 227VMZ-MB

2 2 OPTIVENT ULTRA OPTIVENT ULTRA WITH COMPACT CONTROLLER FOR MODBUS 227VMZ-MB OPTIVENT ULTRA is a complete VAV unit consisting of a Modbus actuator, ultrasound based measuring sensor for pressure-independent control and user interface with 3-digit display which enables monitoring of the air flow and setting up values without external equipment. The controller can be operated via Modbus or with analogue signal, which is set to a standard value of - V on delivery. To change operating range to 2 - V see Setting the values, quick reference guide. The controller can also be force controlled via closing contacts (timer, presence detector, etc.) to override the set min or max air flow. It is also possible to use the controller with a CAV function. Modbus is wired according to 2-wire RS-485 rules. There can be up to 28 devices on one bus (Modbus load /4.) The wiring should be done using a twisted pair cable, such as Datajamak 2x(2+)x.24. The signal grounds of all devices on the same bus should be connected together. The bus should form a daisy chain, with the cable running from one device to the next without branches (max. branch length m). The maximum bus length is 8 m. The bus should be terminated at both ends using 2 Ω resistors. Master D R CONNECTION DIAGRAM Actuators are provided with color coded and numbered wires ( m). BU 2 BN S 3 BK Y/Z 4 GY 24 VAC/DC Supply U /2- VDC Control A WH B WH D D RS 485 /2- VDC Feedback (,5 ma) WIRING Modbus = BU = Blue 2 = BN = Brown 3 = BK = Black 4 = GY = Grey A = WH = White B = WH = White Lenght: mm Strand cross section: 4 x,75 mm2 2 x,38 mm2 Observe polarity on secondary of transformers. All common and signal ( ) must be connected in line. Incorrect polarity can cause controller damage or operation error. Provide overload protection for line voltage and disconnect as required. Consider voltage drops when connecting multiply actuators in parallel. Always use a separate transformer when controller power is full-wave rectified. Controller and actuators must have separate transformers for paralleled multi-actuator application. LT D R Slave Balanced Pair Slave n D D The bus cable should be connected to wires A and B in the same way at every device on the bus. The terminating resistors at both ends of the bus should be connected between wires A and B. If necessary to eliminate interference, the shield of the twisted pair cable can be connected to protective ground. The connection should be made only at one end of the shield, for example always to the cable coming from the controller. MODBUS FACTORY SETTINGS D R Transmission mode RTU Address Transfer rate 92 bps Data bits 8 Parity Even Stop bits Delay ms Response time ms + delay

3 OPTIVENT ULTRA 3 USER INTERFACE 3 Note: Setting or not setting the intermediate position Vbtw has no effect on the operation of the actuator when - / 2- VDC control voltage is used. Vbtw is activated only when forced control signal is used. FUNCTIONS, DETAILED DESCRIPTION 2 On the cover of the actuator there are two selectors, value selector () and function selector (2). Also there is the 3-digit display (3) to show selected functions, values and units. SETTING THE VALUES, QUICKREFERENCE GUIDE. Select air flow unit: Dot on upper-right or lower-right corner of display indicates which units that are used, l/s or m3/h. If there is need of change, turn the function selector until it points to Flow. Then turn the value selector until dot on display toggles to other position. After the selection the display flashes three dashes (- - -) twice for indication that new setting is stored. 2. Setting up Vmax: Turn the function selector until it points to Vmax. Then turn the value selector until desired air flow is shown on display. After the selection the display flashes twice for indication that new Vmax setting is stored. 3. Setting up Vmin: Turn the function selector until it points to Vmin. Then turn the value selector until desired air flow is shown on display. After the selection the display flashes twice for indication that new Vmin setting is stored. 4. Select input signal range: Turn the function selector until it points to Mode. Currently valid range is shown on display, -n for -V range or 2-n for 2-V range. If there is need of change, turn the value selector until desired value is shown on display. After the selection the new range is saved and the display flashes twice for indication. 5. Setting up Modbus address: Turn the function selector until it points to Adr. Then turn the value selector to select the desired address (-247). 6. Setting up Installation parameter: Turn function selector until it points to Inst. Then turn the value selector until desired parameter is shown in display. After the selection the display flashes for indication that new value is stored. Turn the function selector to Flow after the settings is set.. Value selector The value selector allows the changing of values. The position of the arrow shows the value set. The changes are displayed as soon as the selector is moved ± from its position. 2. Function Selector The function selector allows choosing the function depending on its position. If there is no function selected the display will show three dashes(- - -). Flow Shows the actual flow in selected units, m3 /h or l/s. This display matches with the feedback signal U. The display starts flashing if the servomotor hits an end stop before matching actual to reference flow. An overflow (air speed higher than 5 m/s) is indicated in the display by a small circle, see section Display. Turning the value selector allows unit selection. The appropriate dot on display is toggled as indicator. Dot on upper-right corner of display: unit of flow used is l/s. Dot on lower-right corner of display: unit of flow used is m3/h. Vmin Allows to set the desired minimum flow for the external reference signal Y=V/2V by turning the value selector. Selected value is shown on display in m 3 /h or l/s. Vbtw Enables the setting of desired intermediate position flow for the external forced control signal (negative rectified half wave from 24VAC supply) by turning the value selector. Selected value is shown on display in m3/h or l/s.

4 4 OPTIVENT ULTRA Vmax Allows to set the desired maximum flow for the external reference signal Y=V by turning the value selector. Selected value is shown on display in m3/h or l/s. Test Opens the diagnose menu. All outside input signals on Y are neglected and the controller only operates according to the selected override function. All override functions are disabled after a time-out of hours. The display toggles after the selection of the function between the actual flow (8s showing time) and the function (2s showing time). OFF-mode toggles with Y- signal. Selecting another function will disable the Diag function and set it automatically to OFF. Turning the value selector allows Diag function selection. The appropriate symbols on display are toggled as indicator. rst Activate calibration and self-diagnostic for the sensor. Shows the actual duct size e.g. size DN25 is shown as d2. Showing the software version. After 3s showing the display shows off again. Mode Allows to set the input signal range ( V or 2 V) by turning the value selector. The feedback signal range of U corresponds to Y. op(en) opens the damper -n... signal range is -V. cl(ose) closes the damper 2-n... signal range is 2-V. Hi(gh) forces the actuator to V max Lo(w) forces the actuator to V min Adr Selecting the Modbus address. Inst. Set installation parameter for short safety distance installations. Default value is. on Test mode is switched on. The actuator stays in the current position. off Test mode is switched off. The actuator starts controlling according to external signal Y. This signal Y shall be shown in the range of x - V

5 OPTIVENT ULTRA 5 INPUT SIGNALS (ANALOG) Note that control signals are ignored if Modbus control is activated (see register no 23). The input signal Y allows to control the VAV actuator according to the selected mode of operation. In mode VDC the input signal Y matches to the following flows: Vact = Vmin + Y. (Vmax - Vmin) VDC and the flows match to Y = VDC as (Vmin) and Y = VDC as (Vmax) Vact - Vmin Y = VDC. Vmax - Vmin In mode 2 VDC the input signal Y matches to the following flows: Y-2VDC Vact = Vmin +. 8VDC (Vmax - Vmin) OUTPUT SIGNALS (ANALOG) In mode VDC the output signal U matches to the following flows: Vact U = VDC. where Vnom is size dependent nominal flow and to calculate the actual flow Vact from the feedback signal U: Vact =. U Vnom VDC In mode 2 VDC the output signal U matches to the following flows: Vact U = 2VDC + (VDC. and to calculate the actual flow Vact from the feedback signal U: Vact = Vnom Vnom. U VDC Vnom and the flows match to Y = 2VDC as (Vmin) and Y = VDC as (Vmax) Vact - Vmin Y = 2VDC + 8VDC. Vmax - Vmin Mode 2 VDC includes special feature to close damper with input signal Y = VDC. See also Fig. Reference Signal Y.. V max Air volume flow. V min V Nom. Y... V ref = (V max V min ) + V min.. Y 2... V ref = (V max V min ) + V 8 min. Vmin See also Fig 2. Actual air volume flow U. V Nom (%) Air volume flow.. V act = V Nom Mode... VDC U Mode 2... VDC. V min (Apparat) 2 Actual air volume flow U Fig. 2. Actual air volume flow U.. V act = V Nom U 2 8 Control range VDC (Device) 2 Reference signal Y Fig. Reference Signal Y VDC

6 6 OPTIVENT ULTRA WIRING A B A B 24 VAC 24 VDC ~ 24 VAC ~ 24 VDC +... V 2... V... V 2... V Operating voltage Control signal Feedback signal Modbus RS485 blue (BU) brown (BN) black (BK) grey (GY) white (WH) The following wiring solutions are possible: Parallel control M M BU BN BK GY WH WH A B BU BN BK GY WH WH A B.../2... V DC 24 V AC/DC Modbus RS485 Master-slave (same sizes) M M Vmin = Vmax = Vnom BU BN BK GY WH WH BU BN BK GY WH WH A B A B.../2... V DC 24 V AC/DC Modbus RS485

7 OPTIVENT ULTRA 7 WIRING (CONT.) EMSF control EMSF UL(S,D)A - V 2- V - V 2- V p M GT-MB 227VMZ-MB BU BN GY WH WH BU BN BK GY WH WH 2 4 A B A B 24 V AC/DC ~ Modbus RS Vmax S (GT) = Vmax (227VMZ) Vmin (227VMZ) = CAV constant air volume Vmax = Vmin = Setpoint BU BN BK GY M WH WH A B 24 V AC/DC Modbus RS485

8 8 OPTIVENT ULTRA FORCED CONTROLS Note that control signals are ignored if Modbus control is activated (see register no 23). The controller can be force controlled to following positions via closing contacts (see fig. 3): (Close) Y= connected to ground conductor of 24 VAC supply (only with mode 2- VDC) (Vmin) Y= disconnected (Vbtw) Y= neg. rectified half wave from 24VAC supply (Vmax) Y= full wave from 24VAC supply (Open) Y= pos. rectified half wave from 24VAC supply ~ Y/ U Z 227VM BU BN BK GY N47 Fig. 3. Forced control alternatives Vmin Vbtw Vmax Open CLOSE Y U A B AC 24 V DC 24 V + ~ DC...V DC 2...V DC...V DC 2...V SETTING THE CONTROLLER TO A CONSTANT AIR FLOW The controller can be set to a constant air flow neglecting all analog inputs Y. This functionality can be used as an advanced diagnostic function. To activate this function Vmax needs to be set to. The Diag dot in the display appears and the controller uses Vmin as the constant air flow to control to. Use Vmin function to set desired constant air flow. SETTING THE CONTROLLER TO A CONSTANT AIR FLOW The display (3) uses 7-segment numbers in full 3-digits. Additional signs include a small circle, three square dots and two rectangular slashes. The square dots are used with the externally printed text to visualize certain functions or units (m 3/h, l/s). It is meant to denote the unit of the value shown in the display. In the shown case it could be m 3 /h, l/s or activated Diag (diagnostic function). The rectangular slashes are used to define the thousand separators. See following examples: l/s l/s l/s l/s 25 l/s

9 OPTIVENT ULTRA 9 STATUS MESSAGES The actuator and the sensor self-monitor the status. In normal operation the sensor indicates air speed by green LEDs. All malfunctions are indicated with red LEDs and error message on the actuators display. LED number 5 is the LED closest the actuator. During the issue it is possible to drive manually the actuator to fully closed or fully open. In case of issue, contact Fläkt Woods technical support and inform the error message to get further assistant. Note that not all status messages are presented in the table below Note: The unit have a calendar based self testing procedure. During this procedure the blade of the damper will be closed for about 3 seconds. The procedure can be turned off by setting value of register 54 to. However, Fläkt Woods recommends that the procedure is kept activated at all times. With ULDA only messages on actuator s display is visible. Status message LED indication (sensor) Message on actuator display Action if message appears Cable between the sensor and the actuator not connected - ce Fatal error Red LED 4 lights continuously Er or Err Check that cable is connected and there are no visible damages. Contact Fläkt Woods technical support. Err: the actuator needs to be changed Er: the damper needs to be changed Low air speed ( less than.5 m/s) Green LED blinks - - Air speed.5 m/s 3 m/s Green LED lights continuously - - Air speed 3 m/s 6 m/s Green LED and 2 lights continuously - - Air speed 6 m/s 9 m/s Green LED, 2 and 3 lights continuously - - Air speed 9 m/s 2 m/s Green LED, 2, 3, and 4 lights continuously - - Air speed 2 m/s 5 m/s Green LED, 2, 3, 4 and 5 lights continuously - - High air speed (more than 5 m/s) All Green LED blinks - - Damper controlling - Dot indicating unit of the flow flashes Setpoint is not reached - Display starts flashing If the blade is not fully open, damper is stucked. Contact technical support If the blade is fully open, air flow is not sufficient The actuator is finding mechanical limits - Adp or Ref Initialization process on-going - Cal Normal operation after powering up. Will go automatically away after about minute Normal operation after powering up. Will go automatically away after about minute

10 OPTIVENT ULTRA TECHNICAL DATA Power supply Over voltage Power consumption Input signal 24 VAC/VDC ± 2%, 5/6 Hz Up to 4 VDC, max. 5 sec. 4 VA/5Nm Proportional to [V min...v max ] - / 2 - VDC, or - 2 / 4-2 ma with 5 Ω resistor and override controls With the pointer at Vnom, a delay can be set: Some master devices require a delay when switching from transmission mode to reception mode. This response delay is added to 3.5 characters at the end of the message. The delay time is adjustable in steps of 3 ms, the maximum being 765 ms. With the pointer at Mode, the actual position 255 ( %) is shown. The pointer at Test = on, start adaption. Vmax, Vbtw, Vmin are not in use. With the pointer at Flow, the main menu is displayed again. Input impedance Feedback signal Permissible ambient - working temperature - storage temperature - humidity >5 kω - / 2 - VDC proportional to air volume flow 5 C to 5 C -2 C to 8 C 5-95% RH, non-condensing MODBUS SETTINGS The address can be selected from the range 247. With the function selector in the adr position, select the desired address using the value selector. Hardware settings can be changed by setting the function selector to adr and then turning the value selector until the parameter 2in is displayed. This opens up a sub- menu, which is indicated by a small circle on the display. Navigating the Modbus sub-menu With the pointer at adr, hardware settings can be made as shown in the tables below. Display number EE- PROM-value Baudrate Parity Stop bits 96 none even odd Modbus frame address funktion code byte byte N*byte data CRC end 2byte (CRC_Lbyte, CRC_Hbyte 3,5 char Function codes function code name description 3h read hold. register device parameter/ actual values read (integer/float) 6h write single register device parameter single word write The data types, that are used of each register can be found in the parameter tables. CHAR is a 8 bit integer value. The CHAR value use the lbyte of a word register. BYTE is a 8 bit integer value. The BYTE value use the lbyte of a word register. WORD is a 6 bit integer value. The WORD value use the lbyte and the hbyte of a word register (except as explicitly noted otherwise). CRC: according to Modbus over serial line specification and implementation guide v.2. End: message frames are separated by a silent interval of at least 3,5 character time none even odd none even odd 9 96 none 92 none none Note: Fläkt Woods recommends the use of settings -9.

11 OPTIVENT ULTRA MODBUS REGISTRERS Operation values Number Name Address Data type Value range Read/write Description Default Shows/sets Setpoint [%] Setpoint WORD... r/w...% matches on Vmin and Vmax % = Vmin % = Vmax The register is read only, if register 22 = or 3 Sets Override - 2 Override control WORD...4 r/w No override open 2 close 3 Vmin 4 Vmax 5 Vbetween Shows Device ID 4 Device ID 3 WORD...7 r 5 Relative position 4 WORD... r standard actuator 2 VAV 3 fire damper 4 GUAC VAV 5 GUAC CM 6 GT 7 PICB Shows Relative position [%] Absolute position 5 WORD r Shows Absolute position [ ] - 7 Relative flow 6 WORD... r Shows flow [%] - 8 Absolute flow 7 WORD r Shows flow [l/s, m^3/h] - 9 Sensor value 8 WORD... r Analog output Word... r/w Shows value of input signal [mv]... Sets analog output [mv]... see register Temperature 2 Signed word r [ C] -5,

12 2 OPTIVENT ULTRA Service values The values are used only when commissioning the damper or monitoring status. Do not write values constantly to the Service registers Number Name Address Data type Value range Read/write Description Default 4 Software version 3 WORD r Shows software version - 5 Service information 4 WORD r 6 Min value relative 5 WORD... r/w 7 Max value relative 6 WORD... r/w 9 Bus fail position 8 WORD r/w Shows status of the actuator, see status register table Sets Vmin value [%]....% Sets Vmax value [%]....% Sets the actuator position when no communication on bus within 2 seconds no bus monitoring at timeout position close 2 at timeout position open - 9 Between value relative 8 WORD... r/w Sets Vbtw value [%]...% 5 2 Between value absolute 9 WORD... r/w Sets Vbetween value [l/s, m^3/h] Size depended 2 Min value absolute 2 WORD... r/w Sets Min value [l/s, m^3/h] 22 Max value absolute 2 WORD... r/w Sets Max [l/s, m^3/h] Size depended Sets referencing signal and analog output mode Value of the register Setpoint mode Value of Output signal U 23 Setpoint signal mode and mode of analog output 22 WORD...3 r/w Setpoint from analog input Y Setpoint is written to register Actual flow (2)...V Actual flow (2)...V 2 Setpoint is written to register Value written to register 3 Setpoint from analog input Y Value written to register 3 Modbus address 3 WORD -247 r/w Sets device address 32 Sensor status 3 WORD r Shows status of the sensor, see sensor status register table - 33 Installation parameter 32 WORD 5-5 r/w Sets inst. parameter 22 Flow unit 2 WORD.. r/w = l/s, = m^3/h 542 Self testing 54 WORD.. r/w =self monitoring on, = self monitoring off

13 OPTIVENT ULTRA Modbus communication parameter 568 BYTE...8 r/w Sets Modbus communication settings, see Modbus settings table. Note that stored value starts from Mode register 769 WORD r Shows override status, see Mode register-table - Status register (4) The status register makes possible to monitor a health of the actuator. bit Description If bit is = Everything ok = Memory corrupted = Everything ok = Memory corrupted = Everything ok = Password shielded memory open = Everything ok = Password shielded memory open = Everything ok = Fatal error = Everything ok = The actuator has detected a mechanical block or is at end position. = Normal operation = Seepage flow detected = Normal operation = Issue with motor = The actuator is at normal operation range = The actuator has reached the end position. The actuator needs to be changed The actuator needs to be changed Contact Fläkt Woods technical support. Do not restart or power off the actuator. Contact Fläkt Woods technical support. Do not restart or power off the actuator. The actuator needs to be changed Check that bit 2 is not. If bits 5 and 2 are, the actuator has reached an end position. Check that nothing is preventing the actuator to move. Use the test functions to check if the actuator can move to opposite direction. The actuator drives to closed position. Check that there is an air flow in the duct. Contact Fläkt Woods technical support If override Open or Closed is not selected, check that the air flow to the actuator is sufficient Sensor status (3) The status register makes possible to monitor status of the sensor. bit Description If bit is Operation status Normal operation Communication status Communication between the actuator and sensor not working normally 2 Low air speed Air speed less than.5 m/s 3 High air speed Air speed more than 5 m/s 4 Used internally - 5 Status of factory calibration Factory calibration ok 6 Status bit Contact Fläkt Woods technical support. 7 Status bit Contact Fläkt Woods technical support. 8 Status bit Contact Fläkt Woods technical support. 9 Status bit Contact Fläkt Woods technical support.

14 4 OPTIVENT ULTRA Mode register (769) The status register makes possible to check settings of the actuator and monitor active overrides. bit Description If bit is = -V mode selected = 2-V mode selected = Setpoint from analog input Y = Setpoint is written to register To change see Setting up the mode in Quick reference Section To change see register 22 2 = Override CLOSED active - 3 = Override OPEN active - 4 = Override VBetween active - 5 = Override VMax active = Normal control direction = Opposite control direction = Normal operation = Motor off Contact Fläkt Woods technical support. Contact Fläkt Woods technical support. 8 = Override VMin active - 9 = Negative rectified half-wave connected to Y Forced control Vbetween active = positive rectified half-wave connected to Y Forced control Open active = Full-wave connected to Y Forced control Vmax active 2 = Y disconnected or Y signal is (2) V The actuator keeps Vmin flow 3 = Y signal is V The actuator keeps Vmax flow 4 = Y signal connected to ground in 2-V mode The actuator goes to closed position

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