WEST PAM-195-P-PVG Guide

Technical Documentation
PAM-195-P-PVG
Power amplifier for directional valves with ratiometric input

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CONTENTS
1General Information......................................................................................................................................................3
1.1 Order Number.......................................................................................................................................................3
1.2 Scope of supply....................................................................................................................................................3
1.3 Accessories..........................................................................................................................................................3
1.4 Symbols used.......................................................................................................................................................4
1.5 Legal notice..........................................................................................................................................................4
1.6 Safety instructions................................................................................................................................................5
2Characteristics..............................................................................................................................................................6
2.1 Device description................................................................................................................................................7
3Use and application......................................................................................................................................................8
3.1 Installation instruction...........................................................................................................................................8
3.2 Commissioning.....................................................................................................................................................9
4Function modes and technical description.................................................................................................................. 10
4.1 LED Indications ..................................................................................................................................................10
4.2 Typical system structure.....................................................................................................................................11
4.3 Method of operation............................................................................................................................................11
4.4 Input and output signals .....................................................................................................................................12
4.5 Circuit diagram ...................................................................................................................................................13
4.6 Typical wiring......................................................................................................................................................14
4.7 Input connection (examples)...............................................................................................................................14
4.8 Technical data....................................................................................................................................................15
5Parameter................................................................................................................................................................... 16
5.1 Parameter list .....................................................................................................................................................16
5.2 Basic parameters................................................................................................................................................17
5.2.1 LG (Changing the language for the help texts) ..........................................................................................17
5.2.2 MODE (Switching between parameter groups)..........................................................................................17
5.2.3 SENS (Failure monitoring).........................................................................................................................17
5.2.4 CCMODE (Activation of the characteristic linearization)............................................................................18
5.3 Input signal adaption ..........................................................................................................................................18
5.3.1 LIM (Signal monitoring)..............................................................................................................................18
5.3.2 RA (Ramp function) ...................................................................................................................................19
5.4 Output signal adaption........................................................................................................................................20
5.4.1 CC (Characteristics linearization) ..............................................................................................................20
5.4.2 MIN (Overlap compensation).....................................................................................................................21
5.4.3 MAX (Output scaling).................................................................................................................................21
5.4.4 TRIGGER (Threshold value of MIN function).............................................................................................21
5.4.5 SIGNAL:U (Output polarity) .......................................................................................................................22
5.5 Parameters of the power stage...........................................................................................................................22
5.5.1 CURRENT (Nominal output current)..........................................................................................................22
5.5.2 DAMPL (Dither amplitude).........................................................................................................................22
5.5.3 DFREQ (Dither frequency).........................................................................................................................22
5.5.4 PWM (PWM frequency).............................................................................................................................23
5.5.5 ACC (Auto adaptation of the closed loop current controller)......................................................................23
5.5.6 PPWM (Solenoid current controller P gain) ...............................................................................................24
5.5.7 IPWM (Solenoid current controller I gain)..................................................................................................24
5.6 Process data (Monitoring) ..................................................................................................................................24
6Appendix .................................................................................................................................................................... 25
6.1 Failure monitoring...............................................................................................................................................25
6.2 Troubleshooting..................................................................................................................................................25
6.3 Description of the command structure................................................................................................................26
7Notes.......................................................................................................................................................................... 27

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1 General Information
1.1 Order Number
PAM-195-P-PVG-2230
1
- power amplifier for directional valves with integrated power limitation function
1.2 Scope of supply
The scope of supply includes the module plus the terminal blocks which are a part of the housing.
The Profibus plug, interface cables and further parts which may be required should be ordered separately.
This documentation can be downloaded as a PDF file from www.w-e-st.de.
1.3 Accessories
WPC-300 - Start-Up-Tool (downloadable from our homepage –products/software)
1
The number of the version consists of the hardware-version (first two digits) and the software-version (second two digits).
Because of the development of the products these numbers can vary. They are not strictly necessary for the order. We will
always deliver the newest version.

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1.4 Symbols used
General information
Safety-related information
1.5 Legal notice
W.E.St. Elektronik GmbH
Gewerbering 31
D-41372 Niederkrüchten
Tel.: [phone]
Fax.: [phone]
Homepage: www.w-e-st.de or www.west-electronics.com
EMAIL: [email protected]
Date: 18.06.2019
The data and characteristics described herein serve only to describe the product. The user is required to
evaluate this data and to check suitability for the particular application. General suitability cannot be inferred
from this document. We reserve the right to make technical modifications due to further development of the
product described in this manual. The technical information and dimensions are non-binding. No claims may
be made based on them.
This document is protected by copyright.

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1.6 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 (WPC-300 for the start-up software) 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 protec-
tion) 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 as-
sembly. 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 in-
struction 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.
CAUTION!
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, contamina-
tion 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.