Electrical amplifiers

Transcription

1 Elecrical amplifiers RE 30/0.0 Replaces: / Type VT-VSPA- and VT-VSPAK- Componen series X H589_d Table of conens Conens Page Feaures Ordering code Funcional descripion and 3 Block circui diagram / pin assignmen VT-VSPA- Block circui diagram / pin assignmen VT-VSPAK- 5 Technical daa Oupu characerisic curves Indicaor / adjusmen elemens 8 and 9 Meaning of DIL swiches 0 Uni dimensions Engineering / mainenance noes / supplemenary in for ma io n Troubleshooing Feaures Suiable for conrolling all direc and pilo operaed proporional pressure conrol valves wihou elecrical posiion feedback and only one solenoid as acuaor ha are available a he ime of publicaion of his daa shee Differenial inpu, can be swiched beween volage and curren inpu Addiional command value inpu, 0 o +9 V Ramp generaor, can be adjused separaely for up and down ramps Clocked oupu sage Signal "ready for operaion" (VT-VSPAK- only wih LED indicaor lamp) Reverse polariy proecion for volage supply Cable break deecion of curren inpu o 0 ma Shor-circui proecion of solenoid cable Cable break deecion of solenoid cable

2 / Bosch Rexroh AG Hydraulics VT-VSPA- and VT-VSPAK- RE 30/0.0 Ordering code VT-VSPA X * Amplifiers for conrolled proporional pressure conrol valves, analogue, wih one solenoid Wih 3-pin male connecor and fron panel Wih -pin erminal srip; wihou fron panel = No code = K Furher deails in clear ex X = Componen series 0 o 9 (0 o 9: unchanged echnical daa and pin assignmen) Suiable card holders for VT-VSPA-: Type VT 300-X/3, see RE 998 Single card holder wihou power supply uni Suiable power supply uni: Type VT-NE30-X, see RE 999 Compac power supply uni 5/30 VAC VDC, 08 W For subsiues for amplifier ypes VT 000 (up o componen series X), VT 00, VT 03 or VT 03 for rack insallaion, blind plae TE/3HE mus be ordered separaely. Maerial no. R Funcional descripion The command value volage is applied o command value inpu eiher direcly or via an exernal command value poeniomeer wih he help of he regulaed + 9V volage from he power supply uni []. The following is valid for his inpu: +9 V +00 % ). Exernal command value feedforward 5K (ac) 0(ac) (ac) 8(ac) (ac) 0(ac) 8(ac) 30(ac) Inpu +9 V M0 Noe: When an exernal command value poeniomeer is used, in - er nal poeniomeer "Gw" [3] mus be se o maximum or he required maximum pressure. Inernal command value feedforward Differenial inpu (inpu ) 0 o +0 V / o 0 ma 0 o 0 ma 0V reference poenial Inpu +9 V u (i) u Command value inpu is a differenial inpu [] (0 o + 0 V). Wih he help of DIL swiches ) i can be configured as curren inpu ( o 0 ma or 0 o + 0 ma). If he command value is fed forward by exernal elecronics wih a differen reference poenial (e.g. by a PLC), his inpu mus be used. When he command value volage is applied or wihdrawn, care mus be aken ha boh signal cables are disconneced from or conneced o he inpu. Before being passed on, boh command values are summaed [] and hen fed o a poeniomeer [3] ha is accessible on he fron pan el and acs as aenuaor and limis he maximum com mand value. The downsream ramp generaor [] generaes a rampshaped ou pu signal from a sepped inpu signal. The ime consan of his signal can be adjused separaely for up and down ramps wih he help of wo poeniomeers. The specified ramp ime refers o a command value sep-change of 00% and can be approx. s or 5 s, depending on he seing of a DIL swich ). If a command value sep-change of less han 00 % is fed o he inpu of he ramp generaor or when aenuaor [3] is effecive, he ramp ime shorens ac cord ing ly The following is valid for ype VT-VSPA-: The up and down ramp imes can be se separaely o heir minimum value (approx. 30 ms) wih he help of he exernal conacs ramp up/ down. The following is valid for ype VT-VSPAK-: The up and down ramp imes can be se collecively o heir minimum value (approx. 30 ms) wih he help of he exernal conac ramp. Addiions o he pin designaions in brackes are only valid for ype VT-VSPA-.

3 RE 30/0.0 VT-VSPA- and VT-VSPAK- Hydraulics Bosch Rexroh AG 3/ Funcional descripion (coninued) Ramp "up/down" VT-VSPA- VT-VSPAK- a c ac Ramp "up" Ramp "down" Ramp The oupu signal of ramp generaor [] is fed as curren command value o he summing amplifier [5]. Here, a command value of 00 % corresponds o a volage of + V. Summing amplifier [5] adds he oupu signals of he char ac - er is ic curve generaors [ or ] o he command value (can be se lec ed by means of DIL swiches ) depending on he valve o be conrolled). The curren command value can also be filered hrough a low-pass filer ha can be cu in. Curren oupu sage [9] is conrolled via curren regulaor [8]. In addiion, he curren regulaor mod u laes he curren command value wih clock-pulse encoder signal [0] (he frequency can be programmed wih he help of DIL swiches ) ). The clocked acual curren value acs in he solenoid of he valve like a consan curren wih overlaid diher signal. Type VT-VSPA- is pro vid ed wih measuring sockes for he inernal command value and he acual value. The following is valid for he command value: + V 00 % The following is valid for he acual value: mv ma The signal "ready for operaion" is oupu and LED "H" on he fron panel (wih VSPA-) or LED "H" (wih VSPAK-) is li, when: The solenoid cables are no shor-circuied and he oupu sage is no overloaded, a command value is applied (cable break deecion), here is no cable break presen on he solenoid cable. ) Reference poenial for command value is M0 (measuring zero). ) For DIL swich seings, see page 8 o 0 [ ] Cross-reference o block circui diagrams on pages and 5

4 + 9 V (5 ma) M0 (5 ma) 9 V (5 ma) 0 V + V a c ac ac 8ac 30ac ac 8ac 0ac ac ac 8ac ac U/I U,5 A T Σ S...S3 S DC DC Gw 3 H & 3 + V Zw (R30) Σ 5 S S5...S S5 S i 9 S3 / S Σ 3ac ac ac 0ac a c u / Bosch Rexroh AG Hydraulics VT-VSPA- and VT-VSPAK- RE 30/0.0 Block circui diagram / pin assignmen: VT-VSPA- Ramp "up" Ramp"down" Command value Command value +0 V - 0 ma / 0-0 ma GND Noe: Measuring zero (M0) is raised by 9 V as agains 0 V operaing volage! Comm. value S S S3 0 0 V off off off 0 0 ma on on off 0 ma on on on S on off max 5 s s Char. curve Char. curve S off on I max. A 0.8 A I Soll Command value "w" f 3dB S3 S 0 off off,5 Hz off on Hz on off f clock S5 S S 00 Hz on on on 00 Hz off on on 300 Hz off off on Acual curren value "I" Comm. value 0 o V Ac. curren value mv ma Ready for operaion V (50 ma) Differenial inpu ; 5; 5 Summaor 3 Max. command value aenuaor Ramp generaor Characerisic curve generaor Characerisic curve generaor 8 Curren regulaor 9 Curren oupu sage 0 Clock-pulse generaor Proporional solenoid of valve Command value monioring 3 Moniors Power supply uni Low-pass filer Oupu ready for operaion H Signal ready for operaion Gw Command value aenuaion Ramp ime adjusmen Zw (R30) Addiional biasing curren adjusmen (0 o 300 ma or 0 o 00 ma)

5 + 9 V (5 ma) M0 (5 ma) 9 V (5 ma) Σ Gw S...S3 S Comm. value S S S3 U/I 0 0 V off off off U 0 0 ma on on off 0 ma on on on 3 & 3 Zw (R30) Σ 5 S S5...S S5 S f clock S5 S S 00 Hz on on on 00 Hz off on on 300 Hz off off on i 9 S3 / S Σ V + V 8,5 A T DC DC H u RE 30/0.0 VT-VSPA- and VT-VSPAK- Hydraulics Bosch Rexroh AG 5/ Block circui diagram / pin assignmen: VT-VSPAK- Noe: Measuring zero (M0) is raised by 9 V as agains 0 V operaing volage! Ramp Command value Command value +0 V - 0 ma / 0-0 ma GND S on off max 5 s s Char. curve Char. curve S off on I max. A 0.8 A f 3dB S3 S 0 off off,5 Hz off on Hz on off I Soll Comm. value oupu 0 o V Ac. curren value mv ma Differenial inpu ; 5; 5 Summaor 3 Max. command value aenuaor Ramp generaor Characerisic curve generaor Characerisic curve generaor 8 Curren regulaor 9 Curren oupu sage 0 Clock-pulse generaor Proporional solenoid of valve Command value monioring 3 Moniors Power supply uni Low-pass filer H Signal ready for operaion Gw Command value aenuaion Ramp ime adjusmen Zw (R30) Addiional biasing curren adjusmen (0 o 300 ma or 0 o 00 ma)

6 / Bosch Rexroh AG Hydraulics VT-VSPA- and VT-VSPAK- RE 30/0.0 Technical daa (for applicaions ouside hese parameers, please consul us!) Operaing volage U O + VDC +0 % 5 % Operaing range: Upper limi value u O () max +35 V Lower limi value u O () min + V Max. power consumpion P s 50 VA Max. curren consumpion I.8 A Fuse I s.5 A T Inpus: Command value U i 0 o +9 V (reference poenial is M0) Command value (differenial inpu) U i 0 o +0 V; R i = 00 Ω depending on seing or I i o 0 ma (load R L = 00 Ω) wih S o S3 or I i 0 o 0 ma (load R L = 00 Ω) Ramp ime (adjusmen range) 30 ms o approx. s or 5 s (depending on seing wih S) Oupus: Oupu sage Solenoid curren/resisance I max 800 ma +0 %, R 0 = 9,5 Ω depending on seing or I max 00 ma +0 %, R 0 = 5, Ω wih S ) Biasing curren a I max = 800 ma I b 50 ma or 00 ma depending on seing wih S and Zw a I max = 00 ma I b 00 ma (R30) addiionally a I max = 800 ma I b 0 o 300 ma +0 % Adjusable by means a I of Zw (R30) on he max = 00 ma I b 0 o 00 ma +0 % prined-circui board Clock frequency f 00 Hz, 00 Hz, 300 Hz or 30 Hz ±0 % each (depending on seing wih S5 o S) Signal ready for operaion (only wih VT-SPA-) Componen series 0 when ready for operaion U approx. U O in he case of a faul U < V From componen series when ready for operaion U approx. U O, 50 ma in he case of a faul U 0 V, R i = 0 kω Load resisance > 0 kω Regulaed volage U ±9 V ± %, ±5 ma exernally laodable Measuring sockes Command value w U 0 o + V (+ V 00 % solenoid curren), R i = kω Acual curren value I U 0 o 00 mv 0 o 00 ma ±0 ma Type of connecion: VT-VSPA- 3-pin male connecor, DIN, form D VT-VSPAK- -pin erminal srip Card dimensions: Euro-card 00 x 0 mm, DIN 9 Fron panel dimensions Heigh 3 HE (8. mm) Widh soldering side TE (5.08) Widh componen side 3 TE Permissible operaing emperaure range ϑ 0 o +50 C Sorage emperaure range ϑ 5 o +85 C Weigh m 0. kg ) The maximum curren I max can be se o he required value by means of command value aenuaor poenionmeer Gw.

7 RE 30/0.0 VT-VSPA- and VT-VSPAK- Hydraulics Bosch Rexroh AG / Oupu characerisic curves Linear oupu characerisic curve (basic characerisic curve) A Oupu curren in ma I I Command value in % I I A Adjusmen range of biasing curren I b by means of poeniomeer "Zw" (R30) on he prined-circui board Adjusmen range of maximum command value by means of po en io me er "Gw" Characerisic curve wih facory seing Oupu characerisic curve wih firmly se characerisics (see adjusmen insrucions on pages 9 and 0) Oupu curren in ma I V Command value in % I I v Biasing curren curve (qualiaive represenaion) I Adjusmen range of maximum command value by means of po en io me er "Gw" Characerisic curve (qualiaive represenaion) Characerisic curve (qualiaive represenaion)

8 8/ Bosch Rexroh AG Hydraulics VT-VSPA- and VT-VSPAK- RE 30/0.0 Indicaor / adjusmen elemens VT-VSPA-, componen series 0 Poeniomeer for biasing curren adjusmen DIL swich group BRX LED indicaor lamp ready for operaion" H Max. command value (aenuaor) Ramp ime up Ramp ime down" w - Curren command value I - Acual curren value Gw w I R30 BR...BR 3 5 BR...BR 3 5 F,5 A MT X DIL swich group BRX VT-VSPA-, from componen series Poeniomeer for biasing curren adjusmen DIL swich group SX DIL swich group SX LED indicaor lamp ready for operaion" Max. command value (aenuaor) Ramp ime up Ramp ime down" w - Curren command value I - Acual curren value H Gw w I Zw F,5 A T X VT-VSPAK- Max. command value (aenuaor) Ramp ime up" Ramp ime down" Poeniomeer for biasing curren adjusmen Gw Zw DIL swich group SX H DIL swich group SX F,5 A T X LED indicaor lamp ready for operaion" (SMD LED) 3

9 RE 30/0.0 VT-VSPA- and VT-VSPAK- Hydraulics Bosch Rexroh AG 9/ Indicaor / adjusmen elemens (coninued) Assignmen of DIL swich seings on he card o he valve ypes (see also label on he prined-circui board) Seing for valve ypes: S5... S (BR5... BR) S... S (BR... BR) Seing valid for all valve ypes: S... S (BR... BR) DBE(M)T, DBE(M)30, DRE(M)30, 3DRE(M)0 ), 3DRE(M) ), DBEPA, DBEPB, 3DREPA, 3DREPB, pumps Ramp ime 5 s s 35 DRE(M)0-5X, DRE(M)0-5X X Command value +0 V 35 DBE(M)0-5X, DBE(M)0-5X, 3DRE(M)0P-X, 3DRE(M)P-X, ZDRE0, (Z)DBE X 0 0 ma 35 DRE, ZDRE X 0 ma 35 ) Up o componen series 5X Meaning of poeniomeers "Zw" (R30) and "Gw": Adjusmen of biasing curren by means of poeniomeer "Zw" (R30) Turning clockwise increase in biasing curren Turning couner-clockwise reducion of biasing curren Adjusmen of he max. command value by means of poeniomeer "Gw" Turning clockwise increase in command value Turning couner-clockwise reducion of command value Noe (X): Wih ype VT-VSPA- (componen series 0) swich BR mus be se o and poeniomeer R30 urned o lefhand limi sop before he correc characerisic curve can be se. Wih ype VT-VSPA- (from componen series ) and ype VT-VSPAK-, he swiches S and S are ineffecive. Po - en io me er "Zw" needs no o be operaed.

10 0/ Bosch Rexroh AG Hydraulics VT-VSPA- and VT-VSPAK- RE 30/0.0 Meaning of he DIL swiches Noe (X): Before commissioning he amplifiers, make sure ha he DIL swiches on he prined-circui board are se according o he relevan applicaion. Swich posiions wih reference o he curren valve ypes or previous amplifier cards Swich DBE(M)T, DBE(M)30 DRE(M)30, DRE(M)0 3) DRE(M) 3) DBEPA, DBEPB 3DREPA, 3DREPB pumps Valve ypes/amplifier cards DRE(M)0-5X DRE(M)0-5X DBE(M)0-5X DBE(M)0-5X ZDRE0 (Z)DBE 3DRE(M)0P-X 3DRE(M)P-X DRE, ZDRE VT 000 VT 00 VT 03 VT 03 Characerisic curves Basic characerisic curve Characerisic curve Characerisic curve Characerisic curve S5 (BR5) S (BR) Command value filers f -3dB = Hz f -3dB = Hz f -3dB =.5 Hz S3 (BR3) S (BR) Max. oupu curren ) I max = 800 ma I max = 800 ma I max =, A I max =. A S (BR) Clock frequency ) f = 00 Hz f = 00 Hz f = 300 Hz f = 30 Hz S5 (BR5) S (BR) S(BR) Basic biasing curren seing Zw (R30) 00 ma 50 ma 00 ma 00 ma ) Doubling of he maximum oupu curren doubles he adjusmen range and he se biasing curren. ) For f = 00 Hz, DIL swiches S5, S and S mus be se o he posiion. 3) Up o componen series 5X Adjusmen range of biasing curren using poeniomeer Zw (R30): I max = 800 ma I b = 0 o 300 ma I max = 00 ma I b = 0 o 00 ma ( ) valid for VT-VSPA-, componen series 0 Adjusmen opions inedependen of he valve ype (command value and ramp ime) When swich BR is operaed, he biasing curren increases by 50 ma or 00 ma. S (BR) S (BR) S3 (BR3) Command value : +0 V Configuraion of differenial inpu Command value : 0 o 0 ma Command value : o 0 ma Max. ramp ime S (BR) s 5 s DRE, ZDRE = Facory seing (corresponds o he configuraion of a VT 000 amplifier)

11 RE 30/0.0 VT-VSPA- and VT-VSPAK- Hydraulics Bosch Rexroh AG / Uni dimensions (dimensions in mm) VT-VSPA- H 3HE (8,) Gw w I M0 VSPA Ø 8 TE (0) 5 8 VT-VSPAK X x Ø, Engineering / mainenance noes / supplemenary informaion Before commissioning he amplifiers, make sure ha he DIL swiches on he prined-circui board are se according o he relevan applicaion. The facory seing of he parameers is as follows (for he adjusmen of parameers, see pages 8 o 0): max. ramp ime = 5 s, biasing curren = 00 ma, max. oupu curren = 800 ma, clock frequency = 00 Hz The amplifier card may only be insalled when disconneced from he power supply! Do no use plugs wih free-wheeling diodes or LED lamps for connecing he solenoids! Measuremens on he card may only be aken wih insrumens R i > 00 kω! Measuring zero (M0) is raised by +9 V as agains 0 V operaing volage and no elecrically isolaed, i.e. 9 V regulaed volage 0 V operaing volage. For his reason, do no connec measuring zero (M0) o 0 V operaing volage! Use relays wih gold-plaed conacs for passing on command values (small volages, small currens)! Always shield command value cables; connec he shield o ground on he card side and leave he oher end open. Connec he card o ground a erminal or 8. If no sysem ground is provided, connec 0 V operaing volage. Recommendaion: Also shield solenoid cables! For solenoid cables of up o 50 m lengh, use cable ype LiYCY.5 mm. For greaer lenghs, please consul us! The disance o aerial lines, radio sources and radar equipmen mus be a leas m! Do no lay solenoid and signal cables near power cables! Due o he charging curren of he smoohing capacior on he card, fuses mus feaure slow-blowing characerisics! Cauion! Noe! When he differenial inpu is used, boh inpus mus always be swiched on or off simulaneously! Elecrical signals (e.g. signal ready for operaion ) brough ou via conrol elecronics mus no be used for swiching safey-relevan machine funcions! (See also European sandard Safey requiremens for fluid power sysems and componens - hydraulics, EN 98.)

12 / Bosch Rexroh AG Hydraulics VT-VSPA- and VT-VSPAK- RE 30/0.0 Troubleshooing If he amplifier cards are no operable, follow he seps below for roubleshooing:. Is he operaing volage applied? Measuremen of conacs (ac) agains 8 (ac). Fuse on he card defecive? 3. Inernal ±9 V operaing volage available on he card?. When he inernal command value poeniomeer is used, is he jumper from 0(ac) o (ac) plugged? 5. Is he exernal poeniomeer properly conneced?. Is he differenial inpu properly conneced? Check: Reference poenial o 30(ac) 0 o +0 V o 8(ac). Is he solenoid properly conneced? When he card is unplugged, a resisance of approx. 0 Ω o 30 Ω or 5 Ω o 8 Ω, depending on he valve, mus be measurable beween conacs ac and 0ac. The addiions o he conac designaions are only valid for ype VT-VSPA-. Noe: The oupu sage shus down in he case of excessive emperaures (e.g. caused by overloading). This faul is signalled by LED "H" going ou! In he even of a cable break of he " o 0 ma" inpu, he signal "ready for operaion" is rese and LED "H" also goes ou. The following is valid from componen series onwards: In he case of a shor-circui or cable break of he solenoid cable, he oupu ready for operaion is swiched and LED "H" flashes a a frequency of 0.5 o Hz as soon as he command value is > % a he same ime. Bosch Rexroh AG Hydraulics Zum Eisengießer 98 Lohr am Main, Germany Phone +9 (0) 93 5 / 8-0 Fax +9 (0) 93 5 / documenaion@boschrexroh.de This documen, as well as he daa, specificaions and oher informaion se forh in i, are he exclusive propery of Bosch Rexroh AG. I may no be reproduced or given o hird paries wihou is consen. The daa specified above only serve o describe he produc. No saemens concerning a cerain condiion or suiabiliy for a cerain applicaion can be derived from our informaion. The informaion given does no release he user from he obligaion of own judgmen and verificaion. I mus be remembered ha our producs are subjec o a naural process of wear and aging.