Valve amplifiers for proportional pressure valves

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1 Valve amplifiers for proporional pressure valves Type VT-VSPA-, VT-VSPAK- RE 30 Ediion: 03- Replaces: 0.0 Componen series X Suiable for he conrol of all direc and pilo operaed proporional pressure valves wihou elecrical posiion feedback and only one solenoid as acuaing elemen available a he ime of he daa shee publicaion H589_d Feaures Conens Differenial inpu, swichable from volage o curren inpu Addiional command value inpu 0 o +9 V Ramp generaor, separaely adjusable for upwards and downwards direcion Clocked power oupu sage "Ready for operaion" message (VT-VSPAK- only wih LED display) Reverse polariy proecion for volage supply Cable break deecion for curren inpu o 0 ma Shor-circui proecion of he solenoid conducor Cable break deecion of he solenoid conducor Feaures Ordering code Funcion Block diagram/pin assignmen: VT-VSPA- Block diagram/pin assignmen: VT-VSPAK- 5 Technical daa Characerisic curves Display/adjusmen elemens 8 Meaning of he DIL swiches 0 Dimensions Projec planning/mainenance insrucions/ addiional informaion Troubleshooing RE 30, ediion: 03-Enw, Bosch Rexroh AG

2 / VT-VSPA-, VT-VSPAK- Valve amplifiers Ordering code VT-VSPA X / * 0 Amplifier for conrolled proporional pressure valves, analog, wih one solenoid VT-VSPA 0 Wih 3-pole male mulipoin connecor and fron plae no code Wih -pole erminal srip; wihou fron plae K 03 For pressure valves 0 Componen series 0 o 9 (0 o 9: Unchanged echnical daa and pin assignmen) X 05 Furher deails in he plain ex * Suiable card holders for VT-VSPA-: Type VT 300--X/3D, see daa shee 998 Single card holder wihou power supply uni When replacing amplifiers VT 000 (up o componen series X), VT 00, VT 03 or VT 03, he blind plae TE/3HE mus be ordered separaely for he rack mouning. Maerial no. R Funcion The command value volage is specified a he command Differenial inpu (inpu ) value inpu eiher direcly or via an exernal command value poeniomeer by means of he regulaed volage +9 V of he power supply uni [] V / 0 ma 0 0 ma 8(ac) u (i) To his inpu, he following applies: +9 V +00 % ). 0 V reference poenial 30(ac) u Exernal command value preseing 5K (ac) 0(ac) (ac) 8(ac) Inpu +9 V M0 Noice: If an exernal command value poeniomeer is used, he inernal poeniomeer "Gw" [3] mus be se o maximum or o he desired maximum pressure. Inernal command value preseing (ac) Inpu The amendmen of he connecion designaions in brackes only applies o ype VT-VSPA-. The command value inpu is a differenial inpu [] (0 o +0 V). By means of DIL swiches ), i can be configured as curren inpu (+ o +0 ma or 0 o +0 ma). If he command value is specified by exernal elecronics wih a differen reference poenial (e.g. by a PLC), his inpu has o be used. When disconnecing or connecing he command value volage, i has o be ensured ha boh signal lines are in each case separaed from or conneced wih he inpu. Before hey are forwarded, boh command values are summed up [] and hen reach a poeniomeer [3] accessible a he fron plae of he card which acs as aenuaor and hus limis he maximum command value. 0(ac) +9 V Bosch Rexroh AG, RE 30, ediion: 03-

3 Valve amplifiers VT-VSPA-, VT-VSPAK- 3/ Funcion (coninued) The down-sream ramp generaor [] generaes a rampshaped oupu signal from a given sepped inpu signal. The ime consan of his signal can be separaely adjused for he upwards and downwards direcion by means of wo poeniomeers. The specified ramp ime refers o a command value sep of 00 % and may be approx. s or 5 s, depending on he seing by means of a DIL swich ). If a command value sep of less han 00 % is swiched o he ramp generaor inpu or if he aenuaor [3] is effecive, he ramp ime will be correspondingly shorer. To ype VT-VSPA-, he following applies: By means of he exernal "ramp up/down off" conacs, he upwards and downwards ramp imes can be separaely se o heir minimum value (approx. 30 ms). To ype VT-VSPAK-, he following applies: By means of he exernal "ramp off" conac, he upwards and downwards ramp imes can be se o heir minimum value (approx. 30 ms) ogeher. Ramp "up/down" off VT-VSPA- a Ramp "up" off c Ramp "down" off ac VT-VSPAK- Ramp off The ramp generaor [] oupu signal is forwarded o he summing amplifier [5] as curren command value. Here, a volage of + V corresponds o a command value of 00 %. In he summing amplifier [5], he oupu signals of he characerisic curve generaors [ or ] are added o he command value (can be seleced by means of DIL swiches ) depending on he valve o be conrolled). The curren command value can be filered by means of a connecible low pass. The curren oupu sage [9] is conrolled using he curren conroller [8]. In he curren conroller, he curren command value is moreover modulaed wih he clock generaor signal [0] (frequency can be programmed using he DIL swich ) ). In he valve solenoid, he clocked acual curren value acs like a consan curren wih superimposed diher signal. Type VT-VSPA- has measuring sockes for he inernal command value and he acual value. The following is rue for he command value: + V 00 % The following is rue for he acual value: mv ma The "ready for operaion" signal is oupu and he "H" LED on he fron plae (wih VSPA-) or he "H" LED (wih VSPAK-) is illuminaed if: here is no shor-circui of he solenoid conducors and no overload of he oupu sage, a command value is available (cable break deecion), here is no cable break of he solenoid conducor. In case of a faul, he following applies: Oupu LED Shor-circui Low Off Cable break Clocking Flashing ) The reference poenial for command value is M0 (measuremen zero). ) For he DIL swich seings see page 8 o 0 [ ]... assignmen o he block diagrams on page and 5 RE 30, ediion: 03-, Bosch Rexroh AG

4 + 9 V (5 ma) U/I U i ac + V,5 A T DC c + V M0 (5 ma) 9 V (5 ma) 0 V a c ac ac 8ac 30ac ac 8ac 0ac ac ac 8ac Σ Gw S...S3 S DC H & Zw (R30) Σ 5 S S5...S S5 S S3 / S Icommand Σ 3ac ac ac 0ac a u / VT-VSPA-, VT-VSPAK- Valve amplifiers Block diagram/pin assignmen: VT-VSPA- Noice: Measuremen zero (M0) is increased by 9 V as compared o he 0 V operaing volage. Command value Command value "w" Command value 0... V Ready for operaion V (50 ma) Command value +0 V...0 ma / ma GND Acual curren value mv ma Ramp "up" off Ramp "down" off Command 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 Characerisic curve Characerisic curve S off on Imax. A 0.8 A f 3dB S3 S 0 off off.5 Hz off on Hz on off fclock S5 S S 00 Hz on on on 00 Hz off on on 300 Hz off off on Acual curren value "I" Differenial inpu ; 5; 5 Summing device 3 Aenuaor max. command value Ramp generaor Characerisic curve generaor Characerisic curve generaor 8 Curren conroller 9 Power oupu sage 0 Clock generaor Proporional solenoid of he valve Command value monioring 3 Monioring Power supply uni Low pass filer Zw (R30) "Ready for operaion" oupu H "Ready for operaion" display Gw Command value aenuaion Ramp ime seing Addiional pilo curren seing (0 o 300 ma or 0 o 00 ma) Bosch Rexroh AG, RE 30, ediion: 03-

5 + 9 V (5 ma) M0 (5 ma) 9 V (5 ma) U/I U Σ S...S3 S Gw 3 & 3 Zw (R30) Σ 5 S S5...S S5 S i 9 S3 / S Σ 8 0 V DC H + V,5 A T DC 3 0 u Valve amplifiers VT-VSPA-, VT-VSPAK- 5/ Block diagram/pin assignmen: VT-VSPAK- Noice: Measuremen zero (M0) is increased by 9 V as compared o he 0 V operaing volage. Ramp off Command value Command value +0 V...0 ma / ma GND Command 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 Characerisic curve Characerisic curve S off on Imax. A 0.8 A f 3dB S3 S 0 off off.5 Hz off on Hz on off Icommand fclock S5 S S 00 Hz on on on 00 Hz off on on 300 Hz off off on Differenial inpu ; 5; 5 Summing device 3 Aenuaor max. command value Ramp generaor Characerisic curve generaor Characerisic curve generaor 8 Curren conroller 9 Power oupu sage 0 Clock generaor Proporional solenoid of he valve Command value monioring 3 Monioring Power supply uni Low pass filer Zw (R30) H "Ready for operaion" display Gw Command value aenuaion Ramp ime seing Addiional pilo curren seing (0 o 300 ma or 0 o 00 ma) Command value oupu 0... V Acual curren value mv ma RE 30, ediion: 03-, Bosch Rexroh AG

6 / VT-VSPA-, VT-VSPAK- Valve amplifiers Technical daa (For applicaions ouside hese parameers, please consul us!) Operaing volage U B + VDC + 0 % 5 % Upper limi value u B () ma +35 V Lower limi value u B () min + V Max. power consumpion P s 50 VA Max. curren consumpion I.8 A Fuse I s.5 A slow-blow Inpus Command value U e 0 o +9 V (reference poenial is M0) Command value (differenial inpu) U e 0 o +0 V; R e = 00 Ω Depending on he seing by means of S o S3 or I e o 0 ma (load R B = 00 Ω) or I e 0 o 0 ma (load R B = 00 Ω) Ramp ime (seing range) 30 ms o approx. s or 5 s (depending on he seing by means of S) Oupus Oupu sage Solenoid curren/resisance I max 800 ma + 0 %, R 0 = 9.5 Ω Depending on he seing by or I max 00 ma + 0 %, R 0 = 5. Ω means of S ) Pilo curren wih I max = 800 ma I v 50 ma or 00 ma Depending on he seing by wih I max = 00 ma I v 00 ma means of S and "Zw" (R30) Addiionally wih I max = 800 ma I v 0 o 300 ma + 0 % Adjusable by means of "Zw" wih I max = 00 ma I v 0 o 00 ma + 0 % (R30) on he prined circui board Clock frequency f 00 Hz, 00 Hz, 300 Hz or 30 Hz in each case ±0 % (depending on he seing by means of S5 o S) "Ready for operaion" signal (only wih VT-VSPA-) High U Approx. U B, 50 ma Low U 0 V, R i = 0 kω Regulaed volage U ±9 V ± %, ± 5 ma exernally loadable 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-pole male mulipoin connecor, DIN, design D VT-VSPAK- -pole erminal srip Card dimensions Euro-card 00 x 0 mm, DIN 9 Fron plae dimensions Heigh 3 HE (8. mm) Widh soldering side TE (5.08) Widh componen side 3 TE Admissible operaing emperaure range 0 o +50 C Sorage emperaure range 5 o +85 C Weigh m 0. kg ) The maximum curren I max can be se o he required value by means of he "Gw" command value aenuaor poeniomeer. Bosch Rexroh AG, RE 30, ediion: 03-

7 Valve amplifiers VT-VSPA-, VT-VSPAK- / Characerisic curves Linear oupu characerisic curve (basic characerisic curve) A Oupu curren in ma I I Command value in % I I A Pilo curren seing range I v wih poeniomeer "Zw" (R30) on he prined circui board Seing range of he maximum command value wih poeniomeer "Gw" Characerisic curve in he condiion as supplied Oupu characerisic curve wih fixedly se characerisic (see seing insrucions on page 9 and 0) Oupu curren in ma I V Command value in % I I v I Pilo curren characerisic curve (qualiaive represenaion) Seing range of he maximum command value wih poeniomeer "Gw" Characerisic curve (qualiaive represenaion) Characerisic curve (qualiaive represenaion) RE 30, ediion: 03-, Bosch Rexroh AG

8 8/ VT-VSPA-, VT-VSPAK- Valve amplifiers Display/adjusmen elemens VT-VSPA-, componen series 0 Poeniomeer for pilo curren adjusmen DIL swich group BRX "Ready for operaion" LED display 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 pilo curren adjusmen DIL swich group SX DIL swich group SX "Ready for operaion" LED display Max. command value (aenuaor) Ramp ime "up" H Gw Zw F,5 A T X Ramp ime "down" w - curren command value I - acual curren value w I VT-VSPAK- Poeniomeer for pilo curren adjusmen DIL swich group SX DIL swich group SX Max. command value (aenuaor) Ramp ime "up" Ramp ime "down" Gw Zw F,5 A T X H 3 "Ready for operaion" LED display (SMD LED) Bosch Rexroh AG, RE 30, ediion: 03-

9 Valve amplifiers VT-VSPA-, VT-VSPAK- 9/ Display/adjusmen elemens (coninued) Assignmen of he DIL swich seings on he card o he valve ypes (see also sign 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 Command value DRE(M)0-5X, DRE(M)0-5X X +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 ) To componen series 5X Meaning of he "Zw" (R30) and "Gw" poeniomeers: Pilo curren seing by means of he "Zw" (R30) poeniomeer Clockwise roaion increase in pilo curren Counerclockwise roaion reducion of pilo curren Seing of he max. command value using he "Gw" poeniomeer Clockwise roaion increase in command value Counerclockwise roaion reducion of command value Noice (X): Wih ype VT-VSPA- (componen series 0), he BR swich mus be se o "" and he "R30" poeniomeer mus be roaed o he lef sop in order o se he correc characerisic curve. Wih ype VT-VSPA- (from componen series ) and ype VT-VSPAK-, swiches S and S do no have any effec. The "Zw" poeniomeer does no have o be operaed. RE 30, ediion: 03-, Bosch Rexroh AG

10 0/ VT-VSPA-, VT-VSPAK- Valve amplifiers Meaning of he DIL swiches Noice: I has o be ensured before commissioning of he amplifiers ha he DIL swiches on he prined circui board are se according o he relevan applicaion. Swich seings wih regard o 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 DRE(M)0-5X DRE(M)0-5X Valve ypes/amplifier cards 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) OFF OFF S (BR) OFF OFF OFF Command value filer f -3dB = Hz f -3dB = Hz f -3dB =.5 Hz S3 (BR3) OFF OFF S (BR) OFF OFF OFF Max. oupu curren ) I max = 800 ma I max = 800 ma I max =. A I max =. A S (BR) OFF OFF Clock frequency ) f = 00 Hz f = 00 Hz f = 300 Hz f = 30 Hz S5 (BR5) OFF OFF OFF OFF S (BR) OFF OFF S(BR) OFF Pilo curren basic seing "Zw" (R30) 00 ma 50 ma 00 ma 00 ma ) Any doubling of he maximum oupu curren will double he seing range and he se pilo curren. ) For f = 00 Hz, he DIL swiches S5, S and S mus be brough ino "" posiion. 3) To componen series 5X Pilo curren seing range by means of he "Zw" (R30) poeniomeer: I max I max = 800 ma I v = 0 o 300 ma = 00 ma I v = 0 o 00 ma ( ) applies o VT-VSPA-, componen series 0 Upon operaion of swich BR, he pilo curren is increased by 50 ma or 00 ma. Adjusmen opions independen of he valve ype (command value and ramp ime) Configuraion of he differenial inpu S (BR) S (BR) S3 (BR3) Command value : +0 V OFF OFF OFF Command value : 0 o 0 ma OFF Command value : o 0 ma DRE, ZDRE Max. ramp ime S (BR) OFF s 5 s Bosch Rexroh AG, RE 30, ediion: 03- = Condiion as supplied (corresponds o he configuraion of an amplifier VT 000)

11 Valve amplifiers VT-VSPA-, VT-VSPAK- / 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, Projec planning/mainenance insrucions/addiional informaion I has o be ensured before commissioning of he amplifiers ha he DIL swiches on he prined circui board are se according o he relevan applicaion. In he condiion as supplied he parameers are se as follows (for he parameer seing refer o pages 8 o 0): Max. ramp ime = 5 s, pilo curren = 00 ma, max. oupu curren = 800 ma, clock frequency = 00 Hz. The amplifier card may only be assembled when de-energized. No connecors wih free-wheeling diodes or LED displays mus be used for solenoid connecion. Only carry ou measuremens a he card using insrumens R i > 00 kω. Measuremen zero (M0) is increased by +9 V compared o 0 V operaing volage and no isolaed, i.e. 9 V regulaed volage 0 V operaing volage. Thus, do no connec measuremen zero (M0) o 0 V operaing volage. For swiching command values, relays wih gold-plaed conacs have o be used (low volages, low currens). Always shield command value lines, connec shielding o earh on he card-side, oher side open. The card has o be conneced o he earh via erminal or 8. If no sysem earh exiss, connec 0 V operaing volage. Recommendaion: Also shield he solenoid conducor. For solenoid conducors up o 50 m in lengh, use he line ype LiYCY.5 mm. For greaer lenghs, please conac us. The disance o aerial lines, radios, and radar sysems has o be m a leas. Do no lay solenoid conducors and signal lines near power lines. The charging power of he smoohing capacior on he card requires he pre-fuses o be of a slow-blowing naure. Noice: If he differenial inpu is used, boh inpus mus always be conneced or disconneced a he same ime. RE 30, ediion: 03-, Bosch Rexroh AG

12 / VT-VSPA-, VT-VSPAK- Valve amplifiers Troubleshooing If he amplifier cards do no funcion, he following seps are required for roubleshooing:. Operaing volage available? Measuremen of conacs (ac) agains 8(ac). Fuse on he card fauly? 3. Inernal ±9 V operaing volage available on he card?. If he inernal command value poeniomeers are used, is he bridge from 0(ac) o (ac) available? 5. Is he exernal poeniomeer correcly conneced?. Is he differenial inpu correcly conneced? Conrol: Reference poenial o 30(ac) 0 o +0 V o 8(ac). Is he solenoid correcly conneced? If he card is removed, a resisance of approx. 0 Ω o 30 Ω or 5 Ω o 8 Ω has o be measurable beween conacs ac and 0ac depending on he valve ype. The amendmen of he connecion designaions in brackes only applies o ype VT-VSPA-. Noice: The oupu sage swiches off a overemperaure (e.g. due o overload). This error is displayed by he "H" LED going ou. In case of cable break of inpu " o 0 ma", he "ready for operaion" signal is rese and he "H" LED will go ou, as well. The following applies from componen series : In case of shor-circui or cable break of he solenoid conducor, he ready for operaion oupu will clock and he "H" LED will flash wih a frequency of 0.5 o Hz as soon as he command value is simulaneously > %. Bosch Rexroh AG Hydraulics Zum Eisengießer 98 Lohr am Main, Germany Phone +9 (0) 93 5 / 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. Bosch Rexroh AG, RE 30, ediion: 03-

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