Digital valve amplifier for valve types 4WRE 6 ..., component series 2X 4WRE 10 ..., component series 2X Type VT-VRPD-2 RE 30126 Edition: 2013-10 Replaces: 09.07 ▶ Component series 2X ▶ Suitable for controlling proportional valves with electrical position feedback of types: 4WRE 6, component series 2X 4WRE 10, component series 2X H7356 Features Contents ▶ The user-speciﬁc data can be exactly reproduced and is protected against unintended or unauthorized adjustment ▶ Valve selection using the BODAC operating software ▶ Command value input, optionally as voltage or current interface ▶ Voltage input as diﬀerential input ▶ Command value input with variable input adjustment ▶ Ramp generator ▶ Digital inputs for calling up pre-set command value parameters ▶ Enable input and fault output ▶ Freely conﬁgurable measuring socket X2 (X1 ﬁxed to actual valve value) ▶ Conﬁguration and parameterization via serial interface with BODAC PC software (CD:SYS-HACD-BODAC-01) connection cable for BODAC ▶ Up to 32 valve ampliﬁers can be interconnected for parameterization and diagnosis via the local bus Features Ordering code Functional description Block diagram Technical data Pin assignment of the male multipoint connector Pin assignment of the D-Sub socket Dimensions Project planning / maintenance instructions / additional information 1 2 3 4 5 7 8 8 9 RE 30126, edition: 2013-10, Bosch Rexroth AG 2/10 VT-VRPD-2 | Digital valve amplifier Ordering code 01 VT-VRPD 02 ‒ 2 03 ‒ 2X 04 / V0 05 / 0 06 ‒ 0 07 ‒ 1 VT-VRPD 01 Digital ampliﬁer for proportional valves with electrical position feedback 02 Ampliﬁer for valve types 4WRE 6 …-2X and 4WRE 10 …-2X 03 Component series 20 ... 29 (20 to 29: Unchanged technical data and pin assignment) 2X 04 Basic device V0 05 Without display 0 06 Basic device 0 07 With valve output stage (only suitable for valves with two solenoids) 1 Required accessories: ▶ PC program BODAC: CD ordering information: SYS-HACD-BODAC-01 (R900777335) or free download on the Internet at www.boschrexroth.com/hacd ▶ Interface cable: Cable set VT-HACD-1X/03.0/HACD-PC (R900776897) or standard 1:1 cable Bosch Rexroth AG, RE 30126, edition: 2013-10 2 Suitable card holders: ▶ Open card holder VT 3002-1-2X/64G (see data sheet 29928), mat. no. R900991843 (only for control cabinet installation) ▶ Connection adapter VT 10812-2X/64G (see data sheet 30105), mat. no. R900713826 Digital valve amplifier | VT-VRPD-2 3/10 Functional description The valve amplifier is set-up as printed circuit board in Europe format 100 x 160 mm with daughter board, fitted on both sides. The central unit is a microcontroller controlling the entire process and realizing the position control. Data for configuration, command values and parameters are stored in a FLASH in a non-volatile form. Four binarily coded digital inputs are used to call up parameter sets (command values) from the memory in which you can store a maximum of 16 sets. A call-up activates the command value for the control spool position with the related ramp times. More control inputs have the following functions: "Command value valid": Enabling of the parameter set addressed by the current call-up (H active) "Enable": Activation of the outputs (acknowledgment of the fault message with low-high edge) The valve amplifier comprises a controller for the control spool position of a proportional valve. The command value can be preset via digital command value call-ups  and/or via analog inputs . The analog input AI4 (b14/b16) is to be used for the command value presetting of ±10 V, the analog input AI6 (b22/b24) for any command value presetting from 4 to 20 mA. Command values from 0 to +10 V (12...20 mA) control solenoid B. Command values from 0 to –10 V (4...12 mA) control solenoid A. The digital command value is added to the analog command value with the correct sign, according to the set call-up. The command value inputs can be varied by means of software in the signal level. Apart from the internal ramp generation option, you can also influence the ramp for "up" and "down" from external signals with correct total and correct sign by means of the AI2 (b6/b9) and AI5 (b18/b20) analog inputs. For the 4WRE valves, the software offers a step function generator  for the realization of the overlap jump if an overlapped control spool is selected. The command value total is switched to the controller . The actual valve value (b26) is generated from the valve position measurement system by means of an oscillator/a demodulator stage and also switched to the controller . The controller output controls the flow-controlled output stages. is an error, a fault message is output to (d22) by means of a low signal and displayed visually by the "OK" LED (OK goes out) on the front plate. It is possible to configure the enable so that an inactive enable input is not displayed as error. Parameterization and diagnosis Selection of the valve to be controlled and selection and configuration of the command value input, the ramp generator and the enable input as well as the setting of the command value call-up parameters are effected via the serial interface  at the front-side D-Sub socket . Via the local bus, up to 32 valve amplifiers can be connected. Via BODAC, every valve amplifier is assigned a bus address. Reconnection of the serial interface cable is not required. For more information refer to the instructions 30126-01-B. Digital DO 1 DO 2 DO 3 DO 4 DO 5 DO 6 DO 7 outputs (d20) (d26) (z22) (z24) (z26) (z28) (f2) Solenoid A active Solenoid B active Control error ≥ window Freely configurable Freely configurable Freely configurable Not assigned Display elements and measuring sockets The front plate of the command value card is equipped with measuring sockets for the two analog outputs. Measuring socket "X1": Actual valve value (b26) Measuring socket "X2": Valve command value (default) Measuring socket "⊥": Reference potential (corresponds to port z32) LEDs display the following states: LED " " (green): Enable active LED "OK" (green): OK ready for operation LEDs "I1"..."I4" (yellow): Binarily coded command value call-ups LED "I6" (yellow) Command value valid LED "I5, I7" (yellow) Not assigned [ ] = Assignment to the block diagram on page 4 Enable and error messages The control is activated by the H level at the enable input. If no command value call-up is active, the digital call-up 0 is set. Error logics  identify any control deviation, cable break of the actual value cables and the command value input for 4 to 20 mA as well as an inactive enable input. If there RE 30126, edition: 2013-10, Bosch Rexroth AG Bosch Rexroth AG, RE 30126, edition: 2013-10 17 10 Limitation 11 PID controller 12 Oscillator / demodulator 4 Switching power supply unit 5 Binary command value call-ups 6 Control of the binary call-ups 9 Oﬀset RS 232 Control binary call-ups 3 Switching matrix 6 8 Step function generator 16 % t 14 LC1 10 9 8 7 X2 X1 15 Solenoid A active Solenoid B active Control error ≥ window Freely conﬁgurable Freely conﬁgurable Freely conﬁgurable Not assigned 13 PID 11 ⊥ Reference potential (0 V) X2 Valve command value (default) 17 Serial interface –10V +10V OK DO 1 DO 2 DO 3 DO 4 DO 5 DO 6 DO 7 value (± 10 V) AO3 Actual valve Valve command value AO1 (± 10 V) 4 1 2 3 16 Local bus b30 b32 d22 d20 d26 z22 z24 z26 z28 f2 b26 b28 d30 ≈ z14 z10 a b Solenoid A 2 1 2 Measuring sockets: U = ≈ z12 z16 z18 z2 z4 z10 z8 1 Solenoid B X1 Actual valve value U 12 = u i i z6 15 Error logics PI PI u 14 Digital outputs 13 Measuring sockets Binary 15 Binary 0 Command value internal Ramp "up" Ramp "down" S ramp start S ramp end 4 7 Characteristic curve adjustment DC DC Binary 8 Command value valid Binary 1 Binary 2 Binary 4 5 3 2 Analog input adjustment z30 z32 z20 d24 d28 d18 d2 d4 d6 d8 d12 b14 b16 U U b22 I b24 U b6 U b8 U b18 U b20 U 2 1 U/U or I/U transformer 0V + UB System earth Data + Data – Enable DI 9 DI 4 DI 6 DI 1 DI 2 DI 3 External ramp AI5 "down" (0 - 10 V) External ramp AI2 "up" (0 - 10 V) Current input (4 - 20 mA) AI6 Voltage input AI4 (±10 V) 1 4/10 VT-VRPD-2 | Digital valve amplifier Block diagram Digital valve amplifier | VT-VRPD-2 5/10 Technical data (for applications outside these parameters, please consult us!) Valve amplifier VT-VRPD-2-2X/V0/0-0-1 Operating voltage UB 24 VDC Upper limit value uB(t)max 30 V Lower limit value uB(t)min 21 V Current consumption Fuse Imax 1.5 A; standby current 270 mA IS 4 A time-lag Digital inputs Signal log 0 = 0 to 5 V Digital outputs Signal log 0 = 0 to 5 V log 1 = 16 V to UB log 1 = UB – 3 V Imax = 30 mA, short-circuit protected Analog inputs Voltage input AI4, AI2 and AI5 Range Input resistance U ±10 V Re 100 kΩ, > 10 MΩ for input AI2 Resolution 5 mV for range ±10 V 2.5 mV for range 0...10 V Non-linearity < 10 mV Current input (only AI6) Range Input resistance Leakage current Resolution I 4...20 mA Re 100 Ω 0.15 % (with 500 Ω between pin b24 and 0 V) I 5 μA Analog outputs Voltage outputs AO1 and AO3 Output voltage Load Resolution Residual ripple Ramp time U ±10 V RLmin 1 kΩ U 1.25 mV (14 bit) ±15 mV (without noise) t Max. 300 s Valve output stage Solenoid current per solenoid Reference voltage Residual ripple Imax 2.5 A U ±10 V, 30 mA, short-circuit-proof < 20 mV Oscillator frequency f 5.7 kHz Scan time for command value preparation t 2 ms Serial interface Type of connection Local bus, distance to the furthermost device Card dimensions RS 232 (front plate), D-Sub socket 64-pole male multipoint connector, DIN 41612, design G l Max. 280 m line length Euro-card 100 x 160 mm, DIN 41494 Front plate dimensions Height 3 HE (128.4 mm) Width soldering side 1 TE (5.08 mm) Width component side 7 TE Admissible operating temperature range 0 to 50 °C Storage temperature range –20 to +70 °C Weight m 0.2 kg Notice: Information on the environment simulation testing for the areas EMC (electro-magnetic compatibility), climate and mechanical load, see data sheet 30126-U (environmental compatibility statement). RE 30126, edition: 2013-10, Bosch Rexroth AG 6/10 VT-VRPD-2 | Digital valve amplifier Technical data (for applications outside these parameters, please consult us!) Valve 4WRE...-2X (not included in the scope of delivery) Solenoid Current consumption per solenoid Imax 2.5 A Solenoid coil resistance Cold value at 20 °C R 2.7 Ω Max. hot value R 4.5 Ω Electrical connection Plug-in connection according to DIN EN 175301-803 Protection class according to EN 60529 IP 65 with mating connector correctly mounted and locked Position transducer Carrier frequency f 5 kHz Between ports 1 and 2 R 113 Ω Between ports 3 and 4 R 101 Ω Coil resistance (at 20 °C): Electrical connection Plug-in connection according to DIN 43650-BFZ-Pg9 Protection class according to EN 60529 IP 65 with mating connector correctly mounted and locked Bosch Rexroth AG, RE 30126, edition: 2013-10 Digital valve amplifier | VT-VRPD-2 7/10 Pin assignment of the male multipoint connector Row b Row d Pin 2 4 Short Description denomination Binary 1 2 n. c. DI 2 Binary 2 4 n. c. n. c. 6 AI 2+ Ramp + (U)+ DI 3 Binary 4 8 DI 4 Binary 8 12 Short Description denomination DI 1 6 10 Pin DI 5 DI 6 n. c. 8 AI 2– Ramp + (U)– n. c. 10 n. c. n. c. Command value valid 12 n. c. n. c. AI 4+ Command value (U)+ 14 DI 7 n. c. 14 16 DI 8 n. c. 16 AI 4– Command value (U)– AI 5+ Ramp – (U)+ 18 DI 9 Enable 18 20 DO 1 Solenoid A active 20 AI 5– Ramp – (U)– AI 6+ Command value (I)+ 22 OK OK output 22 24 Data+ Local bus 24 AI 6– Command value (I)– Solenoid B active 26 AO 3 Actual valve value ±10 V 26 DO 2 28 Data– Local bus 28 AGND Analog GND 30 AO 1 Valve command value 30 REF– –10 V n. c. 32 REF+ +10 V 32 AO 2 Row z Pin Row f Short Description denomination Pin Short Description denomination 2 MA+ Solenoid A+ 2 DO 7 n. c. 4 MA– Solenoid A– 4 n. c. n. c. 6 MB+ Solenoid B+ 6 n. c. n. c. Solenoid B– 8 MB– 8 n. c. n. c. 10 Shield Shield 10 n. c. n. c. 12 L 1O– Position transducer of valve feed –, pin 2 12 n. c. n. c. 14 L 1I– Position transducer of valve actual value –, pin 4 14 n. c. n. c. 16 L 1I+ Position transducer of valve actual value +, pin 3 16 n. c. n. c. 18 L 1O+ Position transducer of valve feed +, pin 1 18 n. c. n. c. 20 System earth System earth 20 n. c. n. c. 22 DO 3 Control error ≥ window 22 n. c. n. c. 24 DO 4 Freely conﬁgurable 24 n. c. n. c. 26 DO 5 Freely conﬁgurable 26 n. c. n. c. 28 DO 6 Freely conﬁgurable 28 n. c. n. c. 30 UB Supply voltage 30 n. c. n. c. 32 LO Weight 32 n. c. n. c. RE 30126, edition: 2013-10, Bosch Rexroth AG 8/10 VT-VRPD-2 | Digital valve amplifier Pin assignment of the D-Sub socket 5 9 GND Transmission data (RS 232) Reception data (RS 232) 6 1 RS 232 Dimensions (dimensions in mm) Rexroth O1 I2 O2 I3 O3 I4 O4 I5 O5 I6 O6 I7 O7 122 I1 100 89 3HE (128,4) OK RS232 X1 X2 VRPD-2 8TE (40,3) Bosch Rexroth AG, RE 30126, edition: 2013-10 165 195,5 2 Digital valve amplifier | VT-VRPD-2 9/10 Project planning / maintenance instructions / additional information Product documentation for valve amplifier VT-VRPD-2-2X/V0/0-0-1 30126 Technical data sheet (this document) 30126-B Installation and operating instructions 30126-01-B Commissioning and operating instructions 30126-U Environmental compatibility statement 30126-Z Additional information for replacing the VT-VRPD-2-1X by VT-VRPD-2-2X ▶ ▶ ▶ ▶ ▶ The valve ampliﬁer may only be unplugged and plugged when de-energized. No connectors with free-wheeling diodes or LED indicators must be used for solenoid connection. Only carry out measurements at the card using instruments Ri > 100 kΩ. For switching command values, relays with gold-plated contacts have to be used (low voltages, low currents). Always shield command value lines and lead them separately; connect shielding to port z10 on the card-side, other side open (risk of ground loops). ▶ For solenoid conductors up to 50 m in length, use the line type LiYCY 1.5 mm2. With greater lengths, please contact us. Recommendation: Also shield the solenoid conductors. ▶ Use highly ﬂexible CU conductors (at least 2.5 mm2) in order to connect the system earth. The system earth is a main part of the EMC protection of the valve ampliﬁer. It is intended to eliminate interferences which are transported via the data and supply lines. However, this is only possible if the system earth itself does not introduce interferences into the command value card. ▶ The distance to aerial lines, radios, and radar systems has to be 1 m at least. ▶ Do not lay solenoid conductors and signal lines near power lines. ▶ The charging power of the smoothing capacitor on the card requires the pre-fuses to be of a slow-blowing nature. ▶ Notice: If a diﬀerential input is used, both inputs must always be connected or disconnected at the same time. RE 30126, edition: 2013-10, Bosch Rexroth AG 10/10 VT-VRPD-2 | Digital valve amplifier Notes Bosch Rexroth AG Hydraulics Zum Eisengießer 1 97816 Lohr am Main, Germany Phone +49 (0) 93 52 / 18-0 [email protected] www.boschrexroth.de Bosch Rexroth AG, RE 30126, edition: 2013-10 © This document, as well as the data, speciﬁcations and other information set forth in it, are the exclusive property of Bosch Rexroth AG. It may not be reproduced or given to third parties without its consent. The data speciﬁed above only serve to describe the product. No statements concerning a certain condition or suitability for a certain application can be derived from our information. The information given does not release the user from the obligation of own judgment and veriﬁcation. It must be remembered that our products are subject to a natural process of wear and aging. Digital valve amplifier | VT-VRPD-2 11/10 Notes Bosch Rexroth AG Hydraulics Zum Eisengießer 1 97816 Lohr am Main, Germany Phone +49 (0) 93 52 / 18-0 [email protected] www.boschrexroth.de © This document, as well as the data, speciﬁcations and other information set forth in it, are the exclusive property of Bosch Rexroth AG. It may not be reproduced or given to third parties without its consent. The data speciﬁed above only serve to describe the product. No statements concerning a certain condition or suitability for a certain application can be derived from our information. The information given does not release the user from the obligation of own judgment and veriﬁcation. It must be remembered that our products are subject to a natural process of wear and aging. RE 30126, edition: 2013-10, Bosch Rexroth AG 12/10 VT-VRPD-2 | Digital valve amplifier Notes Bosch Rexroth AG Hydraulics Zum Eisengießer 1 97816 Lohr am Main, Germany Phone +49 (0) 93 52 / 18-0 [email protected] www.boschrexroth.de Bosch Rexroth AG, RE 30126, edition: 2013-10 © This document, as well as the data, speciﬁcations and other information set forth in it, are the exclusive property of Bosch Rexroth AG. It may not be reproduced or given to third parties without its consent. The data speciﬁed above only serve to describe the product. No statements concerning a certain condition or suitability for a certain application can be derived from our information. The information given does not release the user from the obligation of own judgment and veriﬁcation. It must be remembered that our products are subject to a natural process of wear and aging.
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