Bucher Hydraulics EVM-UIS-2600 Series User manual

Referenz: 400-B-900007-EN-00
Stand: 08.2021 1/46
Operating Instruction
Universal power amplifier for proportional valves
Series EVM-UIS-2600…

Referenz: 400-B-900007-EN-00
Stand: 08.2021 2/46
Published by
Bucher Hydraulics AG Frutigen
Schwandistrasse 25
CH-3714 Frutigen
Phone [phone]
Email [email protected]
Internet www.bucherhydraulics.com
© 2021 by Bucher Hydraulics AG Frutigen, CH-3714 Frutigen
All rights reserved. This documentation, in whole and/or in part, is protected by copyright. It may not be reproduced,
nor may it be stored, processed, replicated or distributed by electronic means, without written permission from Bucher
Hydraulics.
Data is provided for the purpose of product description only, and must not be construed as warranted characteristics
in the legal sense. No assertion regarding either a particular property or the fitness for a particular intended purpose
can be derived or deduced from this information. The information does not relieve users from the duty of conducting
their own evaluations and tests. 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.

Referenz: 400-B-900007-EN-00
Stand: 08.2021 3/46
CONTENTS
1General information ............................................................................................................ 5
1.1 Order Number ................................................................................................................ 5
1.2 Alternative products........................................................................................................ 5
1.3 Scope of supply.............................................................................................................. 5
1.4 Accessories .................................................................................................................... 5
1.5 Safety instructions .......................................................................................................... 6
2Characteristics .................................................................................................................... 7
2.1 Function modes.............................................................................................................. 7
2.2 Features ......................................................................................................................... 7
2.3 Device description .......................................................................................................... 8
3Use and application ............................................................................................................ 9
3.1 Installation instruction..................................................................................................... 9
3.2 Commissioning............................................................................................................. 10
4Function modes and technical description .................................................................... 11
4.1 General informations .................................................................................................... 11
4.2 LED indications ............................................................................................................ 11
4.3 Control of directional valves (Function 195) ................................................................. 12
4.3.1 Typical system structure ....................................................................................... 12
4.3.2 Method of operation.............................................................................................. 12
4.3.3 Input and output signals........................................................................................ 13
4.3.4 Block diagram ....................................................................................................... 14
4.3.5 Typical wiring ........................................................................................................ 14
4.3.6 Parameter list........................................................................................................ 15
4.4 Control of two throttle or pressure valves (Function 196)............................................. 16
4.4.1 Typical system structure ....................................................................................... 16
4.4.2 Method of operation.............................................................................................. 16
4.4.3 Input and output signals........................................................................................ 17
4.4.4 Block diagram ....................................................................................................... 18
4.4.5 Typical wiring ........................................................................................................ 18
4.4.6 Parameter list........................................................................................................ 19
4.5 Control of proportional valves by preprogrammed values and ramp times (Function
197) .............................................................................................................................. 20
4.5.1 Typical system structure ....................................................................................... 20
4.5.2 Method of operation.............................................................................................. 20
4.5.3 Input and output signals........................................................................................ 21
4.5.4 Block diagram ....................................................................................................... 22

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Stand: 08.2021 4/46
4.5.5 Typical wiring ........................................................................................................ 22
4.5.6 Parameter list........................................................................................................ 23
4.6 Examples for Input connections ................................................................................... 24
4.7 Technical data .............................................................................................................. 25
5Parameterdescription ....................................................................................................... 26
5.1 FUNCTION (Function mode)........................................................................................ 26
5.2 LG (Changing the language for the help texts)............................................................. 27
5.3 MODE (Switching between parameter groups)............................................................ 27
5.4 SENS (Failure monitoring)............................................................................................ 27
5.5 CCMODE (Activation of the characteristic linearization) .............................................. 28
5.6 SOLENOIDS (One or two solenoids) ........................................................................... 28
5.7 PIN 5 (Choice of the additional function of PIN 5)........................................................ 28
5.8 PIN 6 (Choice of the additional function of S1/PIN 6)................................................... 29
5.9 USCALE (Output current scaling depending on PIN 6)................................................ 29
5.10 ENABLE_B (Switching of the ENABLE Function) ........................................................ 30
5.11 LIM (Signal monitoring) ................................................................................................ 30
5.12 POL (Output polarity).................................................................................................... 31
5.13 AINA / AINB (Chice of Current- / Voltage input)........................................................... 31
5.14 AIN ((Analogue input scaling)....................................................................................... 32
5.15 AA / AB (Ramp function / Acceleration time)................................................................ 34
5.16 AA (Ramp function) ...................................................................................................... 34
5.17 RMODE (Choosing ramp function)............................................................................... 35
5.18 S (Presetting command values) ................................................................................... 35
5.19 RA (Ramp function / Acceleration time) ....................................................................... 36
5.20 CCA / CCB (Characteristics linearization).................................................................... 36
5.21 CC (Kennlinienliniarisierung)........................................................................................ 37
5.22 MIN (Overlap compensation) / MAX (output scaling) / TRIGGER (Threshold value of
MIN).............................................................................................................................. 38
5.23 MIN (Overlap compensation) / MAX (Output scaling) / TRIGGER (Threshold value for
MIN).............................................................................................................................. 39
5.24 CURRENT (Nominal output current) ............................................................................ 40
5.25 DAMPL / DFREQ (Ditheramplitude and Dither frequency)........................................... 40
5.26 PWM (PWM Frequenz) ................................................................................................ 41
5.27 ACC (Auto adaptation of the closed loop current controller) ........................................ 42
5.28 PPWM / IPWM (Solenoid current controller P gain and I-gain).................................... 42
5.29 PROCESS DATA (Monitoring) ..................................................................................... 43
6Appendix............................................................................................................................ 44
6.1 Failure monitoring......................................................................................................... 44
6.2 Troubleshooting............................................................................................................ 45
7History................................................................................................................................ 46

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General information
1.1 Order Number
EVM-UIS-2600-2-30D-A1 - Universal power amplifier with USB-interface for
proportional valves
1.2 Alternative products
EVM-UIH-2600-2-30D-A1 - Universal power amplifier for proportional valves
EVM-ETC-2600-2-30D-A1 - Universal power amplifier with EtherCAT-interface for
proportional valves
1.3 Scope of supply
The scope of supply includes the module plus the terminal blocks which are a part of the
housing. Interface cables and further parts which may be required should be ordered
separately.
This documentation can be downloaded as a PDF file from www.bucherhydraulics.com
1.4 Accessories
PS1 - GUI for parametrization and monitoring of the power
amplifier (free download from www.bucherhydraulics.com)

Referenz: 400-B-900007-EN-00
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1.5 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. accident prevention and environmental protection)
must be complied with.
These modules are designed for hydraulic applications in open or closed
loop control circuits. Uncontrolled movements can be caused by device
defects (in the hydraulic module or the components), application errors
and electrical faults. Work on the drive or the electronics must only be
carried out whilst the equipment is switched off and not under pressure.
This handbook describes the functions and the electrical connections for
this electronic assembly. All technical documents which pertain to the
system must be complied with when commissioning.
This device may only be connected and put into operation by trained
specialist staff. The instruction manual must be read with care. The
installation instructions and the commissioning instructions must be
followed. Guarantee and liability claims are invalid if the instructions are
not complied with and/or in case of incorrect installation or inappropriate
use.
All electronic modules are manufactured to a high quality. Malfunctions
due to the failure of components cannot, however, be excluded. Despite
extensive testing the same also applies for the software. If these devices
are deployed in safety-relevant applications, suitable external measures
must be taken to guarantee the necessary safety. The same applies for
faults which affect safety. No liability can be assumed for possible
damage.
Further instructions
•The module may only be operated in compliance with the national
EMC regulations. It is the user’s responsibility to adhere to these
regulations.
•The device is only intended for use in the commercial sector.
•When not in use the module must be protected from the effects of
the weather, contamination and mechanical damage.
•The module may not be used in an explosive environment.
•To ensure adequate cooling the ventilation slots must not be
covered.
•The device must be disposed of in accordance with national
statutory provisions.

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Stand: 08.2021 7/46
2 Characteristics
This module is used for the control of one directional valve with two solenoids or one/two
independent pressure or throttle valves with one solenoid each. Various adjustable parameters
allow for an optimized adaptation to the respective valve. The integrated power amplifier with a
short cycle time of 125 µs for the current loop is an inexpensive and space-saving solution.
2.1 Function modes
Function 195 The amplifier can be used to control one directional valve. The current is
controlled by a +/- 10 V (or 4… 20 mA with cable breakdown monitoring)
input signal.
Function 196 The amplifier can be used to control one/two throttle or pressure valves. The
output current is controlled by 0...10 V (or 4… 20 mA with cable breakdown
monitoring) input signal.
Function 197 The amplifier can be used to control proportional valves with one or two
solenoids by three digital input signals to select up to eight pre-programmed
command and ramp values.
The output current is closed loop controlled and therefore independent from the power supply
and the solenoid resistance. The output stage is monitored for cable breakdown, is short circuit
proof and disables the power stage in case of an error.
RAMP, MIN and MAX, the DITHER (frequency and amplitude) and the PWM frequency are
programmable. In addition, the valve characteristics can be linearized via 10 XY-points. For
example: using pressure valves a linear behavior between input signal and pressure can be
reached.
Typical applications: Control of directional, throttle and pressure valves, which need a flexible
adaptation of the solenoid control.
2.2 Features
•General power amplifier, one unit for all applications
•Control of directional valves or two pressure or throttle valves
•Controlled by analogue or digital inputs
•Compact housing
•Digital reproducible adjustments
•Free scaling of the analogue inputs
•Range monitoring of the input signal
•Characteristics linearization via 10 XY-points per direction
•Free parameterization of RAMPS, MIN und MAX, output current, DITHER (frequency,
amplitude)
•Nominal output current up to 2.6 A
•Simple and application orientated parameter settings via PS1 software
•Failure monitoring and extended function check

Referenz: 400-B-900007-EN-00
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2.3 Device description

Referenz: 400-B-900007-EN-00
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3 Use and application
3.1 Installation instruction
•This module is designed for installation in a shielded EMC housing (control cabinet). All
cables which lead outside must be screened; complete screening is required. It is also a
requirement that no strong electro-magnetic interference sources are installed nearby
when using our open and closed loop control modules.
•The devices must be arranged in the control cabinet so that the power section and the
signal section are separate from each other. Experience shows that the installation
space close to the PLC (24 V area) is most suitable. All digital and analogue inputs and
outputs are fitted with filters and surge protection in the device.
•The module should be installed and wired in accordance with the documentation bearing
in mind EMC principles. If other consumers are operated with the same power supply, a
star-connected ground wiring scheme is recommended. The following points must be
observed when wiring:
•The signal cables must be laid separately from power cables.
•Analogue signal cables must be screened.
•All other cables must be screened if there are powerful interference sources
(frequency converters, power contactors) and cable lengths > 3m.
Inexpensive SMD ferrites can be used with high-frequency radiation.
•The screening should be connected to PE (PE terminal) as close to the
module as possible. The local requirements for screening must be taken into
account in all cases. The screening should be connected to at both ends.
Equipotential bonding must be provided where there are differences between
the connected electrical components.
•With longer lengths of cable (>10 m) the diameters and screening measures
should be checked by specialists (e.g. for possible interference, noise
sources and voltage drop).
•A low-resistance connection between PE and the mounting rail should be provided.
Transient interference is transmitted from the module directly to the mounting rail and
from there to the local earth.
•Power should be supplied by a regulated power supply unit (typically a PELV system
complying with IEC364-4-4, secure low voltage). The low internal resistance of regulated
power supplies gives better interference voltage dissipation, which improves the signal
quality of high-resolution sensors in particular. Switched inductances (relays and valve
coils connected to the same power supply) must always be provided with appropriate
overvoltage protection directly at the coil.

Referenz: 400-B-900007-EN-00
Stand: 08.2021 10/46
3.2 Commissioning
Step Task
Installation
Install the device in accordance with the circuit diagram. Ensure it
is wired correctly and that the signals are well shielded. The device
must be installed in a protective housing (control cabinet or
similar).
Switching on for the first
time
Ensure that no unwanted movement is possible in the drive (e.g.
switch off the hydraulics). Connect an ammeter and check the
current consumed by the device. If it is higher than specified, there
is an error in the wiring. Switch the device off immediately and
check the wiring.
Setting up
communication
Once the power input is correct the PC (notebook) should be
connected to the serial interface. Please see the software
documentation for how to set up communication.
Further commissioning and diagnosis are supported by the PS1
software.
Pre-parameterization
Now set up (with reference to the system design and circuit
diagrams) the the nominal output CURRENT and the typical valve
parameters such as DITHER and MIN/MAX.
Pre-parameterization is necessary to minimize the risk of
uncontrolled movements.
Control signal
Check the control signal with an amp meter. The control signal (the
current of the solenoid) is within the range of 0... 2.6A. In the actual
status it should show approximately 0 A. You can monitor the
current of the solenoids also in the PS1 software.
Switching on the
hydraulics
The hydraulics can now be switched on. The module is not yet
generating a signal. Drives should be at a standstill or drift slightly
(leave its position at a slow speed) if it is a proportional valve.
Activating ENABLE The drive can now be commanded by the analog setpoint.
The drive can now leave its position and move to an end position
with full speed or the pressure can reach maximum. Take safety
measures to prevent personal injury and damage.
Optimization Optimize your settings related to your application