WEST PAM-190-P Series Guide

Technical Documentation
PAM-190-P
Amplifier plug for proportional valves

Page 2 of 24 PAM-190-P-A/I 05.06.2020
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 instructions ................................................................................................................................... 8
3.2 Commissioning............................................................................................................................................... 9
3.3 Manual parameterization.............................................................................................................................. 10
3.3.1 Parameter overview..............................................................................................................................10
3.3.2 Procedural method ...............................................................................................................................10
4Technical description.............................................................................................................................................11
4.1 Input and output signals ............................................................................................................................... 11
4.2 LED definitions ............................................................................................................................................. 11
4.3 Circuit diagram ............................................................................................................................................. 12
4.4 Typical wiring................................................................................................................................................ 13
4.5 Connection examples................................................................................................................................... 13
4.6 Technical data.............................................................................................................................................. 14
5Parameters............................................................................................................................................................15
5.1 Parameter overview...................................................................................................................................... 15
5.2 Basic parameters.......................................................................................................................................... 16
5.2.1 LG (Changing the language).................................................................................................................16
5.2.2 MODE (Parameter view).......................................................................................................................16
5.3 InSignal adaptation....................................................................................................................................... 17
5.3.1 AIN (Analogue input scaling) ................................................................................................................17
5.3.2 LIM (Signal monitoring).........................................................................................................................18
5.3.3 R (Command signal ramp time)............................................................................................................18
5.4 Output signal adaptation............................................................................................................................... 19
5.4.1 MIN (Deadband compensation)............................................................................................................19
5.4.2 MAX (Output scaling)............................................................................................................................19
5.4.3 TRIGGER (Response threshold for the MIN parameter) ......................................................................19
5.4.4 POL (Output polarity)............................................................................................................................20
5.5 Output signal adaptation............................................................................................................................... 20
5.5.1 CURRENT (Rated current range).........................................................................................................20
5.5.2 DFREQ (Dither frequency)....................................................................................................................20
5.5.3 DAMPL (Dither amplitude)....................................................................................................................20
5.5.4 PWM (PWM Frequency).......................................................................................................................21
5.5.5 PPWM (P gain of the current loop).......................................................................................................21
5.5.6 IPWM (I gain of the current loop)..........................................................................................................21
5.6 PROCESS DATA (Monitoring) ..................................................................................................................... 22
6Appendix ...............................................................................................................................................................23
6.1 Failure monitoring......................................................................................................................................... 23
6.2 Troubleshooting............................................................................................................................................ 23
7Notes.....................................................................................................................................................................24

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1 General Information
1.1 Order number
PAM-190-P-A - Power amplifier for proportional valves with 0… 10 V input and M12 connector
PAM-190-P-I - Power amplifier for proportional valves with 4… 20 mA input and M12 connector
Alternative products
PAM-190-P-IO - Amplifier plug for proportional valves with IO-Link interface
PAM-140-P - Mobile amplifier in IP65 housing with 0… 10 V or 4… 20 mA command signal input
PAM-193-P - Amplifier with potentiometers and DIL switches for top hat rail mounting
PAM-199-P - Universal digital amplifier with USB interface for top hat rail mounting
1.2 Scope of supply
The scope of supply includes the module plus the terminal blocks which are 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)
ULA-310 - Programming device with USB interface
SAC-5P-FS - 5 pin M12 connector with connecting cable

Page 4 of 24 PAM-190-P-A/I 05.06.2020
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]
Home page: www.w-e-st.de
EMAIL: [e-mail]
Date: 05.06.2020
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
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.
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,
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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2 Characteristics
This amplifier plug is used to control proportional valves with one solenoid. The compact and inexpensive so-
lution will be mounted directly on the solenoid.
A typical input signal of 0… 10 V (optional 4... 20 mA) can be used. The output current is closed loop con-
trolled and therefore independent from the supply voltage and a varying solenoid resistance.
The parameterization can be done via the PC interface and the ULA-310 adapter or internally via the UP and
DOWN buttons.
By the free parameterization of the amplifier plug all typical proportional valves of the different manufactures
can be optimal adapted.
Typical applications: Controlling of the solenoid of proportional throttle or pressure valves.
Features
Power amplifier for proportional valves located in a DIN EN 175 301-803-A plug housing
Digitally reproducible adjustments
Free scaling of the input signal
Also usable as Soft-Switch-amplifier (soft switch-on and switch-off)
M12 connector
Programmable via USB/LIN bus
Free parameterization of ramps, MIN and MAX, DITHER (frequency, amplitude) and
PWM frequency
Parameter settings via integrated buttons and a selector switch (reduced functionally against the
USB / LINbus)
Optional: Version with CAN-Bus on request
Output current 1 A / 2.5 A
Adaptable to all standard proportional valves

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2.1 Device description
78
34
~ 38
34
(5,5)
1
2
3
4
5
6
7
8
9
0
Selection
Switch
Dreh-
schalter
Button Down
TasteAb
Button Up
TasteAuf
Operation LED
Funktions LED Parameter LED
Parameter LED M12-Plug (5pol)
IEC61076-2-101
(M12-Version)
Rectangle Plug / Rechteck Verbinder
Type:AEN175301-803
Rubber-seal / Dichtung
Type-label
Typenschild
Pin layout
M12/5 plug

Page 8 of 24 PAM-190-P-A/I 05.06.2020
3 Use and application
3.1 Installation instructions
All cables which lead outside must be screened; complete screening is required. It is also a require-
ment that no strong electro-magnetic interference sources are installed nearby when using our control
and regulation modules.
The equipment 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:
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 equipment as pos-
sible. 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).
Particular care is required with cables of over 40 m in length –the manufacturer should be
consulted if necessary.
A low-resistance connection between PE and the mounting rail should be provided. Transient interfer-
ence is transmitted from the equipment 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 partic-
ular. Switched inductances (relays and valve coils connected to the same power supply) must always
be provided with appropriate overvoltage protection directly at the coil.

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3.2 Commissioning
Step
Task
Installation
Install the device in accordance with the circuit diagram. Ensure it is wired cor-
rectly and that the signals are well shielded.
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 de-
vice. If it is higher than specified, there is an error in the wiring. Switch the de-
vice off immediately and check the wiring.
Setting up communication
Once the power input is correct the PC (notebook) should be connected via the
USB interface and the programming device ULA-310. Please see the WPC-
300 program documentation for how to set up communication.
Caution:
The communication works in a HALF DUPLEX process.
Further commissioning and diagnosis are supported by the operating software.
Alternatively, the set-up can be done by the internal parameter selector and the
UP and DOWN buttons.
Pre-parameterization
Parameterize now (with the help of the system redundancy and the connection
diagram) the following parameters:
The ANALOGUE INPUT, the output CURRENT and the typical valve parame-
ter DITHER and MIN/MAX.
Pre-parameterization is necessary to minimize the risk of an unintentional
movement / pressure.
Control signal
Check the control signal (output signal). The control signal (solenoid current)
lies in the range of 0... 2.5 A. In the current state it should show around 0 A.
The valve current can also be monitored in the WPC program.
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).
Activating command signal
CAUTION! The power stage is always active when power supply exists. The
output current to the valve will follow the input signal proportionally.
Controller optimization
Settings like ramp time or dead band compensation can now be done.

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3.3 Manual parameterization
3.3.1 Parameter overview
The manual adjustment is comparable with the adjustment via potentiometer. Not all parameters of the power
plug are available in this mode
1
.
Switch
position
Parameter
Setting range
Remark
0
DEFAULT
-
Released only by pressing the button "Up" and "DOWN"
simultaneously. Response: a short and fast flashing of
the LED.
1
CURRENT
0 | 1
0 = low current range; press „Button DOWN“
1 = high current range; press „Button UP“
2
MIN
0…60%
Deadband compensation
in relation to the current range
3
MAX
30…100%
Reduction in the maximum current
in relation to the current range
4
R:UP
50ms…5sec
Ramp time up
5
R:DOWN
50ms…5sec
Ramp time down
6
PWM
60…1500 Hz
PWM output frequency
7
-
No function
8
-
Current monitoring, no parameter input, see LED defini-
tions.
9
-
Setpoint monitoring, no parameter input, see LED defini-
tions.
3.3.2 Procedural method
1. Press a button or turn the selector switch, which activates the manual adjustment mode.
The parameter-LED flashes.
2. Select the desired parameter (1… 6) by the selector switch.
3. The parameter LED indicates - by flashing - the parameter mode.
a. At the lower boundary the LED lights only briefly
b. At the upper boundary the LED lights almost continuously
4. Press the UP or DOWN button.
a. A short activation of one of the buttons will change the parameter by a value of app. 1%.
b. A continual activation of one of the buttons will change the parameter continually (up to the
point where the upper or lower boundary is reached).
5. The parameters are stored automatically (app. 1 second after the last parameter adjustment). The
manual adjustment will be finished after 60 seconds.
1
The full functionality of the power plug is available via the PC interface only.