W.E.St. Elektronik PAM-140-P Technical Documentation Manual

Technical Documentation

PAM-140-P

Universal mobile power amplifier

CONTENTS

1 General 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

2 Characteristics ................................................................................................................................................. 6

2.1 Device description .................................................................................................................................... 7

3 Use 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

4 Technical 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

5 Parameters .................................................................................................................................................... 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 Input signal 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

6 Appendix ....................................................................................................................................................... 23

6.1 Failure monitoring ................................................................................................................................... 23

6.2 Troubleshooting ...................................................................................................................................... 23

7 Notes ............................................................................................................................................................. 24

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1

1 General Information

1.1 Order number

PAM-140-P-A-10101 - Power amplifier for proportional valves with 0…10 V input in IP65-version
PAM-140-P-I-1010 - Power amplifier for proportional valves with 4...20 mA input in IP65-version

Alternative and extended products

PAM-190-P - Power amplifier (plug) for proportional valves with M12 connection

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
AKL-311 - Cable adapter to ULA-310

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.

Page 3 of 24 PAM-190-P-*-1010 18.08.2015

1.4 Symbols used

General information

Safety-related information

1.5 Legal notice

W.E.St.

Gewerbering 31
D-41372 Niederkrüchten

Tel.: [phone]
Fax.: [phone]

Home page: www.w-e-st.de or www.west-electronics.com
EMAIL: [e-mail]

Date: 18.08.2015

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.

Elektronik GmbH

Page 4 of 24 PAM-190-P-*-1010 18.08.2015

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 power amplifier is used to control proportional valves with one solenoid. The compact solution is imple­mented in an inexpensive IP-65 housing.

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 power amplifier 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
 Electronic board in a housing IP-65
 Digital reproducible adjustments
 Free scaling of the input signal
 Reference output to supply potentiometers
 Free parameterization of ramps, MIN and MAX, DITHER (frequency, amplitude) and

PWM frequency

 Current range: 1 A, and 2,5 A
 Simple and application orientated parameter settings
 Failure monitoring and extended function check
 Adjustments via LIN/USB interface, simplified parameterizing with WPC-300 software
 Parameter settings via integrated buttons and a selector switch (reduced functionally against the

USB / LIN-bus)

 Adaptable to all standard proportional valves

Page 6 of 24 PAM-190-P-*-1010 18.08.2015

58 mm

4,5 mm

PG 11

64 mm

25 mm

34 mm

36 mm

46 mm

Selection
Switch/
Dreh­schalter

Button Down/
Taste Ab

Button Up/
Taste Auf

Operation LED/
Funktions LED

Parameter LED/
Parameter LED

1

2

3

4

5

6

7

8

9

0

2.1 Device description

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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 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.

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