Electric amplifiers RE 30048/08.12 Replaces: 03.12 1/6 Type VT-VRPA2-5...-1X/V0/RTP Component series 1X Table of contents Contents Page Features 1 Ordering code, accessories 2 Front plate 2 Block diagram with pin assignment 3 Technical data 4 Use of ramps 5 Unit dimensions 6 Project planning / maintenance instructions / additional information 6 Features Suitable for controlling direct operated high-response valves Analog amplifiers in Europe format for installation in 19" racks Ramp generator that can be switched off Compensation step Controlled output stage Enable input Inputs and outputs short-circuit-proof External ramp switch-off Adjustment possibilities Zero point valve Sensitivity Ramp times Cable break detection for actual value cable Position control with PID behavior Notice: The photo shows an example configuration. The delivered product differs from the figure.
2/6 Bosch Rexroth AG Hydraulics VT-VRPA2-5...-1X/V0/RTP RE 30048/08.12 Ordering code, accessories VT- V R P A 2 1X V0 RTP Hydraulic component For valves with electric feedback = R Valve type High-response valve = P Control Analog = A Output stages 2 output stages per valve = 2 Option RTP = Ramp function can be set manually Customer version V0 = Catalog version Component series 10 to 19 1X = (10 to 19: Unchanged technical data and pin assignment) Serial number for types 527 = Size 6 537 = Size 10 Preferred types Amplifier type Material number For high-response valves with electric position feedback and positive overlap VT-VRPA2-527-10/V0/RTP 0811405119 4WRP 6...S-1X... VT-VRPA2-537-10/V0/RTP 0811405120 4WRP 10...S-1X... Suitable card holder: Open card holder VT 3002-1-2X/32F (see data sheet 29928). Only for control cabinet installation! Front plate LED green Enable LED red U B < U B min. ON U B Ramp U E +U E LED yellow Sensitivity (100...50 %) Ramp off Ramp off Δ T 5 sec α β α β α β t +0,3 0,5V + 0 valve Lvdt T min. = 0.05 s T = 5 s U E 0,3 0,5V +U E Zero point adjustment (±10 %) LED yellow Cable break
RE 30048/08.12 VT-VRPA2-5...-1X/V0/RTP Hydraulics Bosch Rexroth AG 3/6 Block diagram with pin assignment Enable Command values Ramp Off Test actual value Error Message U A 8,5...40 V= 0 10 V U EΙ 0 V 0 10 V 0 10 V U EΙΙ 0 10 V U EΙΙΙ or 8,5...40 V= 0 10 V 0 V 24 V 24 V =0 V 0 V b32 z16 z32 z10 z12 b10 z8 z22 b22 b20 z28 z26 z18 +10 V/50 ma 8,5 V= 100 k max 40 V On 100 k 100 k + U B min 10 k N p 10 k B +10 V/50 ma Q α β α β t Ramp Off α β 10 k +U B 24 V= 0,1 A <0,3 V Safety logic Lvdt. N pa +15 V +10 V 15 V DC +U B DC +U B + +U B DC AC Osz./Dem. Size 6 Size 10 U s b16 b18 b28 b30 b2 b4 b12 z2 z4 b6 b8 b14 b26 b24 L 0 V ST 0 V 2 1 3 +U B 24 V= Supply * Neutral point 0 V
4/6 Bosch Rexroth AG Hydraulics VT-VRPA2-5...-1X/V0/RTP RE 30048/08.12 Technical data (For applications outside these parameters, please consult us!) Supply voltage U B at b16/b18 and b2/b4 Smoothing capacitor, separately at b16 b4 Nominal 24 V = Battery voltage 21...40 V, Rectified alternating voltage U eff = 21...28 V (one-phase, full-wave rectifier) Recommendation: Capacitor module VT 11110 (see data sheet 30750) (only necessary if the ripple of U B > 10 %) Solenoid, A/VA 2.7/25 (size 6) 3.7/50 (size 10) Current consumption A 1.5 2.5 The current consumption may increase with min. U B and extreme cable length to the control solenoid Power consumption (typical) W 35 60 Input signal (command value) 0...±10 V optionally at b10, z8, z10, z12, z14/b14 summing (R i = 100 kω) Signal source Potentiometer 10 kω Supply with +10 V from b32 (50 ma) 10 V from z22 (50 ma) or external signal source Actual value feedback Osci b26 Test point z28 1) 0 811 405 119 10.2 V eff /7.8 khz 0...±10 V = 0 811 405 120 10.2 V eff /7.8 khz 0...±10 V = Enable output stage At z16, U = 8.5...40 V, R i = 100 kω, LED (green) on front plate lights up Ramp OFF At b20, U = 8.5...40 V Solenoid output Output stage to the solenoid Signal to the positional transducer Supply voltage for potentiometer Cable lengths between amplifier and valve Solenoid cable: 20 to 20 m 1.5 mm 2 20 to 50 m 2.5 mm 2 Position transducer: Max. 50 m with 100 pf/m Supply 1.5 mm 2 Special features Cable break protection for actual value cable, Position control with PID behavior, Pulsed output stage, Fast energization and fast deletion for short actuating times, Ramps with quadrant recognition, Compensation of the dead zone in central valve position, Ramp that can be switched off Adjustment via trimming potentiometer Zero point N PA and N PB Sensitivity and Ramps for accelerations and braking t = 0.05...5 sec LED displays green: Enable ON red: U B < U B min. (approx. 21 V) yellow: Ramp OFF yellow: Cable break actual value Error message Cable break actual value U B too low ±15 V stabilization z22: Open collector output to +U B Max. 100 ma; no error: +U B Circuit board format mm (100 x 160 x approx. 35) / (W x L x H) Europe format with front plate 7 TE Plug-in connection Connector DIN 41612 F32 Ambient temperature C 0...+70 Storage temperature range C 20...+70 Weight m 0.35 kg Notice: Power zero b2 and control zero b12 or b14 or z28 must be separately led to the central ground (neutral point). 1) Values for potentiometers in end position (cw) and for "zero potentiometer" in central position.
RE 30048/08.12 VT-VRPA2-5...-1X/V0/RTP Hydraulics Bosch Rexroth AG 5/6 Use of ramps Information for the use of ramps Ramp ON, if b20 open. Ramp OFF, if b20 connected to b22 or U = 8.5...40 V at b20. With Ramp OFF, Enable OFF or Cable break, any ramp started before will be canceled. Transition to the signal end value is effected by means of a step. Quadrant recognition A When passing through the central position, the direction of movement of the valve spool remains the same, however the cylinder changes its direction. So that the acceleration values for both directions of movement remain the same, the ramp is switched by means of quadrant recognition when the valve passes from one quadrant to the next. Compensation of the dead zone in central valve position B The positive overlap of ±20 % of the spool travel is skipped by means of an electronic compensation circuit in the range ±15 % of the spool travel. Zero point calibration For the calibration, a small command value (U E = 0.3...0.5 V) must be specified in order to ensure that the dead zone has been left. A V acc. decell. β t V = 0 acc. decell. α V B Q l/min Q = f (U E ) N pa zero gain 10V 5 1 0,5V Q=0 U E Q = 0 +0,5V +1 +5 +10V gain zero N pb Deadbandcomp. Adj. at +/ 0,5V
6/6 Bosch Rexroth AG Hydraulics VT-VRPA2-5...-1X/V0/RTP RE 30048/08.12 Unit dimensions (dimensions in mm) Plug-in connector DIN 41612 - F 32 24 V= Mains 100 35 160 Project planning / maintenance instructions / additional information The amplifier card may only be unplugged and plugged when de-energized. The distance to aerial lines, radios and radar systems must be sufficient (> 1 m). Do not lay solenoid and signal lines near power cables. For signal lines and solenoid conductors, we recommend using shielded cables. The cable shield must be connected to the control cabinet extensively and as short as possible. The valve solenoid must not be connected to free-wheeling diodes or other protective circuits. The cable lengths and cross-sections specified on page 4 must be complied with. Bosch Rexroth AG Hydraulics Zum Eisengießer 1 97816 Lohr am Main, Germany Phone +49 (0) 93 52 / 18-0 documentation@boschrexroth.de 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 30048/08.12 VT-VRPA2-5...-1X/V0/RTP Hydraulics Bosch Rexroth AG Notes Bosch Rexroth AG Hydraulics Zum Eisengießer 1 97816 Lohr am Main, Germany Phone +49 (0) 93 52 / 18-0 documentation@boschrexroth.de 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
Bosch Rexroth AG Hydraulics VT-VRPA2-5...-1X/V0/RTP RE 30048/08.12 Notes Bosch Rexroth AG Hydraulics Zum Eisengießer 1 97816 Lohr am Main, Germany Phone +49 (0) 93 52 / 18-0 documentation@boschrexroth.de 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