Electric amplifiers. Table of contents. Features. RE 30095/04.11 Replaces: Types VT 5005 to VT Component series 1X 1/8
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1 Elecric amplifiers RE 30095/04. Replaces: 05.0 /8 Types VT 5005 o VT 5008 Componen series X 558_d Table of conens Conens Page eaures Ordering code uncional descripion Block diagram / pinou: VT 5005 and VT Block diagram / pinou: VT 5007 and VT Technical daa 6 Display / seing elemens 7 Uni dimensions 7 Projec planning / mainenance insrucions / addiional informaion 8 eaures Suiable for he acuaion of direc operaed proporional direcional valves ih elecr. posiion feedback (ype 4WRE, componen series X) Differenial inpu Release inpu ih LED display "Ready for operaion" message by LED display Sep funcion generaor and ramp generaor Ramp imes adjusable by means of a poeniomeer (ih VT 5005 and VT 5006 one ramp each, ih VT 5007 and VT 5008 four ramps each). In he condiion as supplied, he ramps are se o 5 s our command values adjusable by means of he poeniomeer, call-ups indicaed by LEDs Conroller for valve spool posiion To synchronized poer oupu sages Oscillaor and demodulaor for inducive posiion measuremen ih cable break deecion Reverse polariy proecion for he volage supply
2 /8 Bosch Rexroh AG ydraulics VT 5005 o VT 5008 RE 30095/04. Ordering code VT 500_ -X * Amplifier ih one ramp ime: or valves ype 4WRE 6..-X = 5 or valves ype 4WRE 0..-X = 6 Amplifier ih five ramp imes: or valves ype 4WRE 6..-X = 7 or valves ype 4WRE 0..-X = 8 urher deails in he plain ex = X Componen series 0 o 9 (0 o 9: Idenical echnical daa and pinou) Accessories (no included in scope of delivery) Card holder: Type VT 300--X/3D, see daa shee 998 uncional descripion Using he command value inpus o 4, command values can be rerieved [] by acuaing he relaed relays (K o K4). The command value volage is eiher specified direcly, by he conrolled volages ±9 V of he inernal poer supply [] or via an exernal command value poeniomeer. To hese inpus, he folloing applies: ±9 V ±00 % ). If hese four command value inpus are direcly conneced o he conrolled volages ±9 V, four differen command values can be se a he "" o "4" poeniomeers. When using exernal command value poeniomeers a hese inpus, he inernal poeniomeers ill funcion as aenuaors or limiers unless hey are se o he maximum. Exernal command value poeniomeers 5 K 5 K 5 K 4c (4a, 0a, 0c) 4a 6c M0 4c (4a, 0a, 0c) 6a 6c M0 4c (4a, 0a, 0c) 6a 4a Inpus Acuaion Solenoid "b" Inpus Acuaion Solenoid "a" Inpus Acuaion Solenoid "a"+"b" Example: If command value and command value 3 are acivaed simulaneously, command value 3 ill ake effec. Anoher oupu of he card supplies a feed volage for he command value calls hich can be siched from +9 V o 9 V by means of he relay K6 ). or he amplifier varians ih 5 ramp imes (VT 5007 and VT 5008), each of he four call-up command values is allocaed an adjusable ramp ime ("" o "4"). If no command value is called, he ime "5" ill ake effec in hese devices. or he amplifier varians ih one ramp ime (VT 5005 and VT 5006), he ime "" is effecive for all command values a all imes. All relays on he card are siched ih 4 VDC (smoohened). The command value inpu 5 is a differenial inpu (0 o ±0 V). If he command value is specified by exernal elecronics ih a differen reference poenial, 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 ih he inpu. Before hey are forarded, all command values ill be added up according o heir absolue value and heir sign [3]. The don-sream ramp generaor [4] generaes a rampshaped oupu signal from given a sep-shaped inpu signal. The ime consan of he oupu signal can be se using he poeniomeers "" or "" o "5". The specified ramp ime refers o a command value sep of 00 % and may be approx. s or 5s, depending on he jumper seing (J5, J6). If a command value sep of less han 00 % is siched o he ramp generaor inpu, he ramp ime ill be correspondingly shorer. The LEDs "" o "4" indicae hich command value is jus being called. If more han one command value is called a a ime, he inpu ih he highes number ill ake prioriy. ) The reference poenial for he command values o 4 is M0 (measuremen null).
3 RE 30095/04. VT 5005 o VT 5008 ydraulics Bosch Rexroh AG 3/8 uncional descripion Exernal ime poeniomeer and ramp "Off" 500 K 8a 0a 8a 0a Ramp "conrollable" Ramp "On/Off" Imporan: When using an exernal ime poeniomeer, he inernal poeniomeer for he ramp ime mus be se o maximum. The maximum ramp ime is reduced as he resisance value of he exernal poeniomeer is siched in parallel o ha of he inernal one (approx. 500 kω). By siching he relay K5 or by an exernal bride, he ramp ime is se o is minimum value (approx. 30 ms). The oupu signal of he ramp generaor [4] is lead in parallel o he summing device [6] and he sep funcion generaor [5]. Wih command value volages > 00 mv, he sep funcion generaor [5] generaes a polariy-independen sep signal ha is added o he oupu signal of he ramp generaor. This sep funcion resuls in he fas passing of he valve spool overlap. Wih larger command value volages, he sep funcion generaor emis a consan oupu signal. The oupu signal of he summing device [6] is he posiion command value and is supplied o he PID conroller [7], he "" measuremen socke on he fron panel of he card and por 4a (command value afer ramp/exernal limiaion poenial). A volage of 6 V a he "" measuremen socke corresponds o a command value of +00 %. The PID conroller has been especially opimized for he 4WRE valve ype (componen series X). The curren oupu sages are acuaed depending on he difference beeen posiion command value and acual posiion value. A posiive command value signal a he amplifier inpu acuaes he oupu sage for solenoid "a", a negaive command value signal he oupu sage for solenoid "b". The inducive posiion ransducer [3] deecs he valve spool posiion. The AC volage signal of he posiion ransducer is convered in he oscillaor/demodulaor [] and reurned o he PID conroller as acual posiion value. The zero poin of he posiion ransducer (acual value zero poin) can be adjused by means of he "Zx" poeniomeer (on he prined circui board). The amplificaion of he acual posiion value has been calibraed in he facory and mus no be changed (±6 V max. valve spool sroke). Wih a signal of > 8.5 V a he release inpu (available from componen series 7), he oupu sages (indicaion by he yello "" LED on he fron plae). By seing jumper J7, he oupu sages are permanenly released irrespecive of he release inpu saus. The release inpu ill hen be ineffecive. In case of failure-free operaion, he "" LED (ready for operaion) is illuminaed; in deail if: The release signal is applied, The inernal ±9 V volage supply funcions (ampliude and symmery), No shor-circui of he solenoid lines and There is no cable break in he posiion ransducer lines. In case of failure, he o oupu sages are immediaely deenergized, he conroller is siched off and he "Ready for operaion" message is rese. Afer remedy of he failure, he card is immediaely funcional again; he "" LED lighs up again. [ ] = Allocaion o he block diagram on page 4 and 5
4 4/8 Bosch Rexroh AG ydraulics VT 5005 o VT 5008 RE 30095/04. Block diagram / pinou: VT 5005 and VT 5006 (from componen series 7) Ramp exernal 8a 0a Measuremen socke "": 6 V +00 % Measuremen socke "x": +6 V +00 % Ready for operaion PI 8 9 c 3c Magne "b" Differenial inpu Reference poenial/gnd Command value 5 ±0 V Command value 4 ±9 V Command value 3 ±9 V Command value ±9 V Command value ±9 V Command value+ ( a "" measuremen socke) resuls in he acuaion of solenoid "a". Command value (+ a "" measuremen socke) resuls in he acuaion of solenoid "b". Auxiliary volage ±9 V Call-ups Command value Command value Command value 3 Command value 4 Ramp Off Sich-over auxiliary volage Relay call-up volage (+4 V) Measuremen null (M0) is increased by 9 V as compared o he 0 V operaing volage! 6c 6a 0c 0a 4a 4c 30a c a 6a 6c 8a 8c (R) K K u (R) K u K 3 (R3) K3 K3 K6 K4 + K5 K4 K K5 4 J5, J6 4c "Release" inernal 6a +9 V,5 A T 6c M0 4a 9 V 00 μ = On fron plae 4 LED display for command value call-ups 4 (R4) K K6 Call-up relay R R4 Command value poeniomeer Ramp ime Command values Differenial amplifier 3; 6 Summing device 4 Ramp generaor 5 Sep funcion 5 6 Release Gx 7 Conroller for spool posiion 8 Curren conroller 9 Oupu sage 0 Monioring Oscillaor/demodulaor 8 PI PID 0 7 x Zx J7 9 a 3a 4c 4a 8c 0c 30c c a + UB 8a Poer supply 0 V 0 V 3 Posiion ransducer 4 Threshold deecion 5 Proporional valve 3 5 Release inpu Magne "a" Acual posiion value ±6 V Command value afer ramp ±6 V Operaing volage
5 RE 30095/04. VT 5005 o VT 5008 ydraulics Bosch Rexroh AG 5/8 Block diagram / pinou: VT 5007 and VT 5008 (from componen series 7) Ramp exernal 8a 0a K. K. K3. K Measuremen socke "": 6 V +00 % Measuremen socke "x": +6 V +00 % Ready for operaion PI 8 9 c 3c Magne "b" Diffearenial inpu Reference poenial/gnd Command value 5 ±0 V Command value 4 ±9 V Command value 3 ±9 V Command value ±9 V Command value ±9 V Command value+ ( a "" measuremen socke) resuls in he acuaion of solenoid "a". Command value (+ a "" measuremen socke) resuls in he acuaion of solenoid "b". Auxiliary volage ±9 V 6c 6a 0c 0a 4a 4c 30a (R) K u (R) u K 3 (R3) K3 4 (R4) K6 K4 + 3 K5 4 J5, J PI PID 0 7 x 9 a 3a 4c 5 Magne "a" Acual posiion value ±6 V Call-ups Command value Command value Command value 3 Command value 4 Ramp Off Sich-over auxiliary volage Relay call-up volage (+4 V) Measuremen null (M0) is increased by 9 V as compared o he 0 V operaing volage! c a 6a 6c 8a 8c K K K3 K4 K5 K c "Release" inernal 6a +9 V,5 A T 6c M0 4a 9 V 00 μ = on fron plae 4 LED display for command value call-ups K K6 Call-up relay R R4 Command value poeniomeer...5 Ramp ime Command values Differenial amplifier 3; 6 Summing device 4 Ramp generaor 5 Sep funcion Release 4 Gx 7 Conroller for spool posiion 8 Curren conroller 9 Oupu sage 0 Monioring Oscillaor/demodulaor Zx J7 4a 8c 0c 30c c a + UB 8a Poer supply Command value afer ramp ±6 V 0 V 0 V 3 Posiion ransducer 4 Threshold deecion 5 Proporional valve 3 Release inpu Operaing volage
6 6/8 Bosch Rexroh AG ydraulics VT 5005 o VT 5008 RE 30095/04. Technical Daa (or applicaions ouside hese parameers, please consul us!) Operaing volage U B 4 VDC +40 % 5 % Operaing range: Upper limi value Loer limi value u B () max u B () min 35 V V Poer consumpion P S < 50 VA Curren consumpion I < A use I S.5 A T Inpus: Command values o 4 U e ±9 V (reference poenial is M0) Command value 5 U e 0 o ±0 V; R e 00 kω Release Acive No acive Relay daa: Nominal volage Response volage Reverse volage Coil resisance U U U U U R > 8.5 V < 6.5 V Operaing volage U B 6.8 V.4 V 50 Ω Ramp ime (seing range) 30 ms o approx. s or 5 s (in each case ±0 %) Oupus: Oupu sage Solenoid curren/resisance VT 5005, VT 5007 VT 5006, VT 5008 Clock frequency Driver for he inducive posiion ransducer: Oscillaor frequency Maximum load capaciy Volage ampliude I max I maxf f I U SS.8 A ± 0 %; R (0) = 5.4 Ω. A ± 0 %; R (0) = 0 Ω Self-clocking up o approx..5 kz.5 kz ±0 % 30 ma 5 V per oupu Conrolled volage U ±9 V ± %, 5 ma exernally loadable Measuremen sockes Command value "" Acual posiion value "x" Type of connecion U U x 0 o ±6 V ( 6 V +00 %; +6 V 00 %); R i = 00 Ω 0 o ±6 V (+6 V +00 %; 6 V 00 %); R i = 00 Ω 3-pole blade connecor, DIN 46, design D Card dimensions Euro board 00 x 60 mm, DIN 4494 ron plae dimensions: eigh Widh conducor pah side Widh componen side 3 E (8.4 mm) TE (5.08 mm) 7 TE Admissible operaing emperaure range ϑ 0 o 50 C Sorage emperaure range ϑ 0 o +85 C Weigh m 0.5 kg
7 RE 30095/04. VT 5005 o VT 5008 ydraulics Bosch Rexroh AG 7/8 Display / seing elemens 0 - red LED "cable break" Max. ramp ime approx. s or 5 s Zx: Zero poin posiion ransducer Gx: Gain of he acual posiion value (calibraed in he facory) LED display "Release" (yello) LED display "Ready for operaion" (green) / Command value ih LED display / Command value ih LED display 3/3 Command value 3 ih LED display 4/4 Command value 4 ih LED display Ramp ime (for VT 5005 and VT 5006)... 5 Ramp imes (for VT 5007 and VT 5008) x Measuremen socke for acual posiion value Measuremen socke for command value J6 J5,5 A T X Slip-on board for varians ih five ramp imes Release (from componen series 7) Meaning of he jumpers on he card for he seings (plae on he back side of he fron plae) ramp ime enable Jx = bridge 5 s J5 J6 in. J7 Jx = open s J5 J6 ex. J7 = delivery sae Jumper plugged or Bridge open Imporan: The circles ( ) serve he marking of he seings made by he cusomer. The condiion is supplied is marked ih " ". Ramp ime Release Uni dimensions (dimensions in mm) 3E (8,4) x x : M0 ±6 V:= 00 % : M0 ±6 V:= 00 % 8TE (40,3) 8TE (40,3)
8 8/8 Bosch Rexroh AG ydraulics VT 5005 o VT 5008 RE 30095/04. Projec planning / mainenance insrucions / addiional informaion The amplifier card may only be unplugged and plugged hen de-energized! No plug-in connecors ih free-heeling diodes or LED indicaors mus be used for solenoid connecion! Only carry ou measuremens a he card using insrumens R i > 00 kω! Measuremen null (M0) is increased by +9V compared o 0 V operaing volage and no isolaed, i.e. 9 V conrolled volage = 0 V operaing volage. Thus, do no connec measuremen null (M0) o 0 V operaing volage! or siching command values, relays ih gold-plaed conacs have o be used (small volages, lo currens)! Card relays may only be siched using conacs ih a load capaciy of approx. 40 V, 50 ma! In case of acuaion, he conrol volage mus have a residual ripple of max. 0 %! Alays shield command value lines; connec shielding o 0 V operaing volage on he card-side, oher side open (risk of ground loops)! Recommendaion: Also shield solenoid lines! or solenoid lines up o a lengh of 50 m, use he cable ype LiYCY.5 mm². Wih greaer lenghs please conac us! The disance o aerial lines, radios, and radar sysems has o be m a leas! Do no lay solenoid and signal lines near poer cables! The charging curren of he smoohing capacior on he card requires he series fuses o be of a slo-bloing naure! Do no connec he ground sign a he inducive posiion ransducer ih he ground! (Prerequisie for he compaibiliy ih previous componen series!) Aenion: If he differenial inpu is used, boh inpus mus alays be conneced or disconneced a he same ime! Noe: Elecric signals aken ou via conrol elecronics (e.g. "Ready for operaion" signal) mus no be used for siching safey-relevan machine funcions! (See also he European sandard "Safey requiremens for fluid poer sysems and heir componens - ydraulics", EN 98) Bosch Rexroh AG ydraulics Zum Eisengießer 9786 Lohr am Main, Germany Phone +49 (0) 93 5 / 8-0 ax +49 (0) 93 5 / documenaion@boschrexroh.de.boschrexroh.de This documen, as ell 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 ihou 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 on judgmen and verificaion. I mus be remembered ha our producs are subjec o a naural process of ear and aging.
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