W.E.S.T. Elektronik POS-123-P-PFN Mode d’emploi

Technical Documentation

POS-123-P-PFN

Universal position control module with integrated power stage and Profinet interface

 
Page 2 of 53 POS-123-P-PFN 31.03.2021 
 
CONTENTS 
 
1General Information.................................................................................................................................................4 
1 Product Name................................................................................................................................................. 4 
2 Scope of supply.............................................................................................................................................. 4 
3 Accessories.................................................................................................................................................... 4 
4 Symbols used................................................................................................................................................. 5 
5 Legal notice.................................................................................................................................................... 5 
6 Safety instructions.......................................................................................................................................... 6 
2Characteristics.........................................................................................................................................................7 
1 Device description.......................................................................................................................................... 8 
3Use and application.................................................................................................................................................9 
1 Installation instructions ................................................................................................................................... 9 
2 Method of operation...................................................................................................................................... 10 
2.1 Positioning sequence............................................................................................................................10 
2.2 Influences on positioning accuracy.......................................................................................................12 
2.3 Optional additional function: motion profile with second speed.............................................................12 
3 Commissioning............................................................................................................................................. 13 
4Technical description.............................................................................................................................................14 
1 Input and output signals ............................................................................................................................... 14 
2 LED definitions ............................................................................................................................................. 14 
2.1 First section (left part of module) ..........................................................................................................14 
2.2 Second section (right part of module)...................................................................................................15 
3 Circuit diagram ............................................................................................................................................. 16 
4 Typical wiring................................................................................................................................................ 17 
5 Connection examples................................................................................................................................... 17 
6 Technical data.............................................................................................................................................. 18 
5Parameter..............................................................................................................................................................19 
1 Parameter overview...................................................................................................................................... 19 
2 System parameters ...................................................................................................................................... 21 
2.1 MODE (Parameter view).......................................................................................................................21 
2.2 LG (Changing the language).................................................................................................................21 
2.3 SENS (Malfunction monitor) .................................................................................................................21 
2.4 PASSFB (Password for fieldbus)..........................................................................................................22 
2.5 EOUT (Output signal if READY = OFF)................................................................................................22 
2.6 HAND (Manual speed)..........................................................................................................................22 
2.7 POSWIN:S (Static position monitoring).................................................................................................23 
2.8 POSWIN:D (Dynamic position monitoring) ...........................................................................................23 
3 Input signal adaptation ................................................................................................................................. 23 
3.1 SYS_RANGE (System stroke)..............................................................................................................23 
3.2 SIGNAL (Type of input signal)..............................................................................................................23 
3.3 N_RANGE:X (Sensor nominal pressure)..............................................................................................24 
3.4 OFFSET:X (Sensor offset)....................................................................................................................24 
4 Position Controller........................................................................................................................................ 24 
4.1 VRAMP (Ramp time for external speed demand).................................................................................24 
4.2 VMODE (Methode of positioning) .........................................................................................................25 
4.3 ACCEL (Acceleration)...........................................................................................................................25 
4.4 VMAX (Maximum speed in NC mode)..................................................................................................25 
4.5 V0(Loop gain setting) ...........................................................................................................................26 
4.6 V0:RES (Resolution of the Loop Gain Input) ........................................................................................26 
4.7 A (Acceleration time).............................................................................................................................27 
4.8 D (Deceleration / braking distance).......................................................................................................27 

 
Page 3 of 53 POS-123-P-PFN 31.03.2021 
4.9 PT1 (Time constant of the controller)................................................................................................... 28 
4.10 CTRL (Deceleration characteristics) .................................................................................................... 28 
5 Output signal adaptation............................................................................................................................... 29 
5.1 MIN (Deadband compensation) ........................................................................................................... 29 
5.2 MAX (Output scaling)........................................................................................................................... 29 
5.3 TRIGGER (Response threshold for the MIN parameter)...................................................................... 29 
5.4 OFFSET (Zero correction) ................................................................................................................... 30 
5.5 SIGNAL:U (Polarity of the output signal).............................................................................................. 30 
6 Power stage.................................................................................................................................................. 30 
6.1 CURRENT (Rated output current) ....................................................................................................... 30 
6.2 DAMPL (Dither amplitude)................................................................................................................... 31 
6.3 DFREQ (Dither frequency)................................................................................................................... 31 
6.4 PWM (PWM Frequency)...................................................................................................................... 31 
6.5 ACC (Current loop auto adjustment).................................................................................................... 32 
6.6 PPWM (P gain of the current loop) ...................................................................................................... 32 
6.7 IPWM (I gain of the current loop)......................................................................................................... 32 
6.8 IMS (Theoretical maximum current drain)............................................................................................ 33 
7 Special commands ....................................................................................................................................... 33 
7.1 AINMODE............................................................................................................................................ 33 
7.2 AIN (Analogue input scaling)................................................................................................................ 34 
7.3 ST (Status Report)............................................................................................................................... 35 
8 PROCESS DATA (Monitoring)...................................................................................................................... 35 
6Appendix............................................................................................................................................................... 36 
1 Failure monitoring......................................................................................................................................... 36 
2 Troubleshooting............................................................................................................................................ 36 
7PROFINET IO RT interface .................................................................................................................................. 38 
1 Functions...................................................................................................................................................... 38 
2 Address assignment..................................................................................................................................... 38 
3 Device data file (GSDML)............................................................................................................................. 38 
4 IO Description............................................................................................................................................... 39 
5 Commands via Profinet ................................................................................................................................ 41 
5.1 Overview.............................................................................................................................................. 41 
5.2 Definition control word 1....................................................................................................................... 42 
5.3 Definition control word 2....................................................................................................................... 43 
6 Feedback via Profinet................................................................................................................................... 44 
6.1 Overview.............................................................................................................................................. 44 
6.2 Definition status word 1........................................................................................................................ 45 
6.3 Definition status word 2........................................................................................................................ 46 
7 Parameterisation via Profinet........................................................................................................................ 47 
7.1 Procedure ............................................................................................................................................ 47 
7.2 Parameter List...................................................................................................................................... 48 
8Profinet-Driver Blocks for Simatic-Controllers....................................................................................................... 49 
1 Integration of the Block into the PLC program.............................................................................................. 49 
2 Function........................................................................................................................................................ 52 
9Notes.................................................................................................................................................................... 53 
 
 
 

Page 4 of 53 POS-123-P-PFN 31.03.2021

1 General Information

1.1 Product Name

POS-123-P-PFN-2040

positioning control module with analog sensor interface, integrated power stage

and Profinet interface

Alternative products:

POS-123-P standard device with analog command signals

1.2 Scope of supply

The scope of supply includes the module plus the terminal blocks which are 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.w-e-st.de.

1.3 Accessories

WPC-300 - Start-Up-Tool (downloadable from our homepage - products/software)

Any standard cable with USB-A and USB-B connector can be used as the programming cable.

The number of the version consists of the hardware version (first two digits) and the software version (last 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 5 of 53 POS-123-P-PFN 31.03.2021

1.4 Symbols used

General information

Safety-related information

1.5 Legal notice

W.E.St.

Elektronik GmbH

Gewerbering 31

D-41372 Niederkrüchten

Tel.: +49 (0)2163 577355-0

Fax.: +49 (0)2163 577355-11

Home page: www.w-e-st.de

EMAIL: contact@w-e-st.de

Date: 31.03.2021

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.

Page 6 of 53 POS-123-P-PFN 31.03.2021

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.

Page 7 of 53 POS-123-P-PFN 31.03.2021

2 Characteristics

This electronic module has been developed for controlling hydraulic positioning drives. The demands are

given via Profinet. Proportional valves with up to 2.6 Ampere nominal current can be controlled directly. The

advantage of the integrated power output stage is based on the integrated control behavior without additional

dead times. The setpoint is specified via a Profinet interface, the position feedback of the cylinder is read in as

an analog signal.

The position controller is optimized for stroke-dependent deceleration or the NC control mode. The controller

and the controller settings are adapted to typical requirements and thus permit rapid and uncritical optimization

of the control behavior. The optimized control function offers a high degree of precision together with high

stability for hydraulic drives. The movement cycle is controlled via the external position and speed demands in

SDD mode or via the internal profile generator in NC mode.

Our start-up tool WPC-300 supports the parameterising and trouble shooting. The fieldbus interface provides a

continuous monitoring of actual values and operating states. Control parameters can also be changed via

Profinet.

Typical applications: general positioning drives, fast transport drives, handling systems, speed-controlled

axes and also tracer control.

Features

•Control via Profinet interface

•Analog free scalable sensor input

•Real physical units like mm or mm/s

•Principle of stroke-dependent deceleration for fast and robust positioning

•NC profile generator for constant speed

•Application oriented parameterising

•Controlling and monitoring via fieldbus

•Integrated power stage

•Individual profile demand by speed, acceleration and delay

•Fault diagnosis and extended function checking

•Simplified parameterisation with WPC-300 software

Page 8 of 53 POS-123-P-PFN 31.03.2021

2.1 Device description

1 2 3 4

5 6 7 8

910 11 12

14 15 1613

W.E.ST.

Ready A B

18 19 2017

22 23 2421

Error

LinkAct1

State

LinkAct2

ID:

Add.:Date:

Made in Germany

D-41372Niederkrüchten

Homepage: http://www.w-e-st.de

W.E.ST.

Elektronik

Supply

45,0000 mm99,0000 mm

114,0000 mm

TypenschildundAnschlussbelegung

Type plateandterminal pinassignment

13 14 15 16

Klemmblöcke (steckbar)

Terminals (removable)

LEDs

USB

Interface

Feldbus / Fieldbus

RJ45 Profinet

Feldbus / Fieldbus

Profinet LEDs

Page 9 of 53 POS-123-P-PFN 31.03.2021

3 Use and application

3.1 Installation instructions

•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 necessary to avoid strong

electro-magnetic interference sources being installed nearby when using our open and closed loop

control modules.

•Typical installation location: 24 V control signal area (close to PLC)

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 place close to the PLC (24 V area) is most suitable. All digital

and analogue inputs and outputs are fitted with filters and surge absorbers 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-shaped 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 > 3 m. 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.

•If having 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).

Special care is required if using cables of over 40 m in length, and if necessary the

manufacturer should be consulted if necessary.

•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

IEC 60364-4-41 / VDE 0100-410, 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) which are connected to

the same power supply must always be provided with appropriate overvoltage protection directly at the

coil.

Page 10 of 53 POS-123-P-PFN 31.03.2021

3.2 Method of operation

This control module supports simple point-to-point positioning with hydraulic drives. The system works on the

principle of stroke-dependent deceleration, i. e. the control gain (deceleration stroke) is set via parameters D:A

and D:B. Alternatively the loop gain V0:A and V0:B will be used in NC mode. In this mode the velocity is

controlled and the profile ist defined by the velocity and the acceleration.

The deceleration characteristics can be set linearly (LIN) or approximately quadratically (SQRT1) via the

CTRL parameter. For normal proportional valves SQRT1 is the standard setting. In NC mode normally the LIN

variation is the better fitting one.

3.2.1 Positioning sequence

The positioning procedure is controlled by the switching inputs. After the ENABLE signal is applied, the

required position equal to the actual position is set in the module and the drive remains stationary under

control at the current position. The general readiness for operation is now reported via the READY output. The

START signal activates the transmitted position setpoint. This happens either only on the rising edge of the

START signal or continuously if the DIRECT control bit is set.

The drive moves directly to the new required position and reports the reached position via the InPos output.

The InPos output remains active as long as the position is maintained and as long as the START signal

remains applied.

In manual mode (START disabled) the drive can be moved by means of HAND+ or HAND-. The drive moves

under open-loop control at the programmed manual speeds.

When the HAND (+ or -) signal is switched off, the current actual position is accepted as the required position

and the drive comes to a controlled stop.

The HAND mode can be used-in case of a sensor failure-to drive the axis manually.

V+

A:A D:A

A:B

D:B

MAX:A

MAX:B

driving out

volumetric flow

P-A

and B-T

control direction

driving in

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