Related Manuals for Bucher Hydraulics EVS-AU1-2500 Series
Summary of Contents for Bucher Hydraulics EVS-AU1-2500 Series
- Page 1 Operating Instruction Universal power amplifier for proportional valves Series EVS-AU1-2500… & EVS-AI1-2500… Reference: 400-B-900009-EN-00 Issue: 10.2021 1/24...
- Page 2 Because the products are subject to continual improvement, we reserve the right to amend the product specifications contained in this catalogue. The original language and legal terminology of all Bucher Hydraulics documentation is exclusively German. Bucher Hydraulics cannot be held liable for any possible errors in translation.
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Page 3: Table Of Contents
CONTENTS General Information ......................5 Order number ........................5 Alternative products ......................5 Scope of supply ....................... 5 Accessories ........................5 Safety instructions ......................6 Characteristics ........................7 Features .......................... 7 Device description ......................8 Use and application ......................9 Installation instructions .................... - Page 4 Appendix ..........................22 Failure monitoring ......................22 Troubleshooting ......................22 History ..........................24 Reference: 400-B-900009-EN-00 Issue: 10.2021 4/24...
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Page 5: General Information
General Information Order number EVS-AU1-2500-1-30D-A1 Universal power amplifier with 0... 10V input for proportional valves Alternative products EVS-AI1-2500-1-30D-A1 Universal power amplifier with 4...20mA input for proportional valves Scope of supply The scope of supply includes the module. Cables, adapters and further parts which may be required should be ordered separately. -
Page 6: Safety Instructions
Safety instructions Please read this document and the safety instructions carefully. This document will help to define the product area of application and to put it into operation. Additional documents and knowledge of the application should be taken into account or be available. General regulations and laws (depending on the country: e.g. -
Page 7: Characteristics
Characteristics This amplifier plug is used to control proportional valves with one solenoid. The compact solution will be mounted directly on the solenoid. A typical input signal of 0…10 V (optional 4…20mA) can be used. The output current is closed loop controlled and therefore independent from the supply voltage and a varying solenoid resistance. -
Page 8: Device Description
Device description Reference: 400-B-900009-EN-00 Issue: 10.2021 8/24... -
Page 9: Use And Application
Use and application Installation instructions • All cables which lead outside must be shielded; a complete shielding is required. It is also a requirement that no strong electro-magnetic interference sources are installed nearby when using our control and regulation modules. •... -
Page 10: Commissioning
Commissioning Step Task Install the device in accordance with the circuit diagram. Ensure it Installation is wired correctly and that the signals are well shielded. Ensure that no unwanted movement is possible in the drive (e. g. switch off the hydraulics). Connect an amperemeter and check the Switching on for the first current consumed by the device. -
Page 11: Technical Description
Technical description Input and output signals Connection Supply PIN 1 Power supply (see technical data) PIN 3 0 V (GND) Power supply (ground). Connection Analogue signals PIN 2 Command signal input +, signal range 0… 10 V, scalable PIN 4 Command signal input -, signal range 0…... -
Page 12: Block Diagram
Block diagram Typical wiring Reference: 400-B-900009-EN-00 Issue: 10.2021 12/24... -
Page 13: Technical Data
Technical data Supply voltage (Ub) [VDC] 12… 30 (incl. ripple) Current consumption [mA] < 50 (w/o solenoid) External fuse 3 medium time lag Analog inputs: Unipolar / differential Voltage 0…10 Input resistance [kOhm] > 90 Signal resolution 0.026 Current [mA] 4…20 Burden [Ohm]... -
Page 14: Manual Parametrization
Manual parametrization Parameter overview The manual adjustment is comparable with the adjustment via potentiometer. Not all parameters of the power plug are available in this mode. For full functionality, the use of the PC interface is necessary. Switchposition Parameter Range Remarks Released only by pressing the button "up"... -
Page 15: Procedural Method
Procedural method Task Parameter Press a button or turn the selector switch, which activates the manual adjustment mode. The parameter-LED flashes. Select the desired parameter (1… 6) by the selector switch. The parameter LED indicates - by flashing - the parameter mode. At the lower boundary the LED lights only briefly At the upper boundary the LED lights almost continuously Press the UP or DOWN button. -
Page 16: Parameter Description
Command Default Unit Description current. Dither frequency DFREQ PWM frequency PPWM Parameters for the closed loop current controllers IPWM Parameter description LG (Changing language) Command Parameter Unit Group x= DE | EN Either German or English can be selected for the help texts in the PS1 software. After changing the language settings, the parameter list has to be updated by pressing the speed button “ID”... - Page 17 This command offers an individual scalable input. The following linear equation is used for the ���� scaling. ������������ ���� �������� = ∗ (���� ���� ������������ − ����) ���� The “C” value is the offset (e.g. to compensate the 4 mA in case of a 4… 20 mA input signal). The variables A and B are defining the gain factor with which the signal range is scaled up to 100 % (e.g.
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Page 18: Lim (Signal Monitoring)
LIM (Signal monitoring) Command Parameter Unit Group x= 0… 2000 0.01 % The signal monitoring deactivates the output current if the input signal leaves the permitted range after scaling. This function makes it possible to detect a short circuit or cable break of a joystick or potentiometer. -
Page 19: Min (Overlap Compensation) / Max (Output Scaling) / Trigger (Threshold Value Of Min)
MIN (Overlap compensation) / MAX (output scaling) / TRIGGER (Threshold value of MIN) Command Parameter Unit Group x= 0… 6000 0.01 % x= 2000… 10000 0.01 % TRIGGER x x= 0… 3000 0.01 % The output signal is adapted to the valve by these commands. With the MAX value the output signal (the maximum valve current) will be defined. -
Page 20: Current (Rated Current Range)
7.8 CURRENT (Rated current range) Command Parameter Unit Group CURRENT x i= 0 | 1 The nominal current range is set with this parameter. Dither and also MIN/MAX always refer to the selected current range. 0 = 1.0 A range 1 = 2.5 A range 7.9 DAMPL / DFREQ (Ditheramplitude and Dither frequency) Command... -
Page 21: Ppwm / Ipwm (Solenoid Current Controller P Gain And I-Gain)
IPWM parameters should be adjusted. The PWM frequency can only be set in defined steps. This means that there are deviations between the specified and the actual frequency. The next highest frequency step is always used. 7.11 PPWM / IPWM (Solenoid current controller P gain and I-gain) Command Parameter Unit... - Page 22 Appendix Failure monitoring Following possible error sources are monitored continuously: Source Fault Characteristic The output will be switched Command signal PIN 2 / 4 Out of range off and the FUNKTION LED LIM command flashes. The output will be switched Command signal PIN 2 / 4 Out of range or broken wire off and the FUNKTION LED...
- Page 23 FAULT CAUSE / SOLUTION The flashing READY LED signals that a fault is detected by the equipment. The fault could be: • Solenoid error or no signal at the input, if 4… 20 mA signals FUNKTION LED is • LIM monitored input signals are parameterized. flashing.
- Page 24 History Revision Date Short mark Comment 01.12.2021 FT / MAK Initial version Reference: 400-B-900009-EN-00 Issue: 10.2021 24/24...
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