WEST POS-124-U-PFN Guide

Technical Documentation
POS-124-U-PFN
POS-124-U-ETC
POS-124-U-PDP
1
Two axes positioning and synchronization control module with
integrated fieldbus interface and SSI as well as analog sensor interface
1
The picture shows the hardware of the ethernet based variations, the Profibus device contains a 9 pin D-SUB socket

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CONTENTS
1General Information...................................................................................................................................................5
1.1 Order number ....................................................................................................................................................5
1.2 Scope of supply.................................................................................................................................................5
1.3 Accessories .......................................................................................................................................................5
1.4 Symbols used....................................................................................................................................................6
1.5 Legal notice .......................................................................................................................................................6
1.6 Safety instructions .............................................................................................................................................7
2Characteristics...........................................................................................................................................................8
2.1 Device description .............................................................................................................................................9
3Use and application.................................................................................................................................................10
3.1 Installation instructions ....................................................................................................................................10
3.2 Typical system structure..................................................................................................................................11
3.3 Method of operation.........................................................................................................................................11
3.4 Commissioning................................................................................................................................................13
4Technical description............................................................................................................................................... 14
4.1 Input and output signals...................................................................................................................................14
4.2 LED definitions.................................................................................................................................................15
First section with USB.............................................................................................................................15
Second section (fieldbus)........................................................................................................................15
4.3 Block Diagram .................................................................................................................................................16
4.4 Typical wiring...................................................................................................................................................17
4.5 Connection examples......................................................................................................................................17
4.6 Technical data .................................................................................................................................................18
Common .................................................................................................................................................18
Fieldbus ..................................................................................................................................................19
5Parameters..............................................................................................................................................................20
5.1 Parameter overview.........................................................................................................................................20
5.2 Basic parameters.............................................................................................................................................23
MODE (Switching between parameter groups).......................................................................................23
5.3 System parameters..........................................................................................................................................23
LG (Changing the language for the help texts) .......................................................................................23
PDPADR (Profibus address)...................................................................................................................23
PASSFB (Password fieldbus) .................................................................................................................23
SENS (Malfunction monitoring)...............................................................................................................24
SYS_RANGE (Working stroke)...............................................................................................................24
HAND (Manual speed)............................................................................................................................24
POSWIN (In-position monitoring range)..................................................................................................25
EOUT (Output signal: READY = OFF)....................................................................................................25
5.4 Input signal adaption........................................................................................................................................26
SELECT:X (Type of position sensors).....................................................................................................26
SSI:RES (Signal resolution)....................................................................................................................26
SSI:BITS (Number of bits).......................................................................................................................26
SSI:CODE (Signal coding)......................................................................................................................27
SSI:ERRBIT (Position of the “out of range” bit).......................................................................................27
SSI:POL (Direction of the sensor signal).................................................................................................27
SIGNAL (Type of input)...........................................................................................................................27
N_RANGE (Nominal range of the sensor) ..............................................................................................28
OFFSET (Sensor zero correction) ..........................................................................................................28
5.5 Positioning controller .......................................................................................................................................29
VMODE (Selecting the control mode).....................................................................................................29

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VRAMP (Ramp time for external speed demand)...................................................................................29
ACCEL (Acceleration in NC mode).........................................................................................................29
VMAX (Maximum speed in NC Mode) ....................................................................................................30
V0(Loop gain setting)..............................................................................................................................30
A (Acceleration ramp time)......................................................................................................................31
D (Deceleration / braking distance).........................................................................................................31
PT1 (Timing of the controller)..................................................................................................................32
CTRL (Deceleration characteristics) .......................................................................................................32
5.6 Synchronous controller....................................................................................................................................33
SYNCMODE (Operation mode synchronous run)...................................................................................33
SYNCWIN (synchronization monitoring range).......................................................................................34
SYNC (Control parameters)....................................................................................................................34
5.7 Output signal adaption.....................................................................................................................................35
MIN (Deadband compensation)..............................................................................................................35
MAX (Output scaling)..............................................................................................................................35
TRIGGER (Response threshold for the MIN parameter) ........................................................................35
OFFSET (Zero correction) ......................................................................................................................36
SIGNAL:U (Type and polarity of the output signal).................................................................................36
5.8 Drift compensation / high accurate positioning................................................................................................37
DC:AV (Activation value).........................................................................................................................38
DC:DV (Deactivation value)....................................................................................................................38
DC:CR (Integrator limitation)...................................................................................................................38
DC:I (Integration time).............................................................................................................................38
5.9 Special commands ..........................................................................................................................................39
SELPLUS (additionally transmitted bus signals).....................................................................................39
ETC_LOOP (Transfer rate).....................................................................................................................39
DIAG (Query of the switch-off causes)....................................................................................................39
AINMODE (Input scaling mode)..............................................................................................................40
AIN (Analogue input scaling)...................................................................................................................40
5.10 PROCESS DATA (Monitoring).........................................................................................................................42
5.11 Status information............................................................................................................................................42
6Common device functions ....................................................................................................................................... 43
6.1 Failure monitoring............................................................................................................................................43
6.2 Troubleshooting...............................................................................................................................................43
6.3 Remote control mode ......................................................................................................................................45
7EtherCAT IO interface ............................................................................................................................................. 46
7.1 ETHERCAT CoE .............................................................................................................................................46
7.2 EtherCAT installation.......................................................................................................................................46
7.3 EtherCAT access handling ..............................................................................................................................46
7.4 EtherCAT device profiles (ESI)........................................................................................................................47
7.5 Standard Objects.............................................................................................................................................48
8Profinet IO RT interface........................................................................................................................................... 49
8.1 PROFINET IO function ....................................................................................................................................49
8.2 Profinet Installation guideline...........................................................................................................................49
8.3 PROFINET address assignment......................................................................................................................49
8.4 Device data file (GSDML)................................................................................................................................50
9Profibus DP interface............................................................................................................................................... 50
9.1 Profibus function..............................................................................................................................................50
9.2 Installation guideline........................................................................................................................................50
9.3 Device data file (GSD).....................................................................................................................................50
10 Process data............................................................................................................................................................ 51
10.1 Data sent to the device....................................................................................................................................51
Description of the bus signals.................................................................................................................52

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Coding of the control bits ........................................................................................................................54
10.2 Data sent to Fieldbus.......................................................................................................................................56
Description of the bus signals .................................................................................................................57
Coding of the status bits..........................................................................................................................58
11 Parameterizing via Fieldbus .................................................................................................................................... 60
11.1 Procedure........................................................................................................................................................60
11.2 Parameter List .................................................................................................................................................61
12 Profinet –Driver Blocks for Simatic –Controllers.................................................................................................... 62
12.1 TIA –Portal......................................................................................................................................................62
12.2 STEP7 –classic...............................................................................................................................................65
12.3 Common Properties.........................................................................................................................................68
13 Notes.......................................................................................................................................................................70

Page 5 of 70 POS-124-U 24.01.2022
1 General Information
1.1 Order number
Two axes positioning controller with programmable output (±10 V differential voltage or 4… 20 mA), ana-
logue or SSI sensor interface and optional synchronous control.
POS-124-U-PFN Control via Profinet - IO interface
POS-124-U-ETC Control via EtherCAT interface
POS-124-U-PDP Control via Profibus DP interface
1.2 Scope of supply
The scope of supply includes the module including 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 (download: www.w-e-st.de/produkte/software)
Any standard cable with USB-A and USB-B connector can be used as the programming cable.

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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
EMAIL: [email protected]
Date: 24.01.2022
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 cir-
cuits. 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 exter-
nal 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, contami-
nation 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 electronic module has been developed for controlling hydraulic positioning drives.
Both axes can be controlled independently or also be driven in synchronous mode via fieldbus.
The differential outputs are provided for the control of proportional valves with integrated or external electron-
ics (with differential input). Alternatively the output can be parameterized to 4… 20 mA. This module is in-
tended for the connection with analogue position sensors 0...10V or 4...20mA (scalable) or digital SSI sensor
interfaces.
The internal monitoring sends information about error and operating states via the fieldbus connection to the
master controller. The operational readiness is reported via a digital output, too.
Typical applications: Positioning control or synchronization control with hydraulic axes.
Features
•Two independent positioning axes
•Can be combined for synchronized control
•Command position value parameter, actual value response, control bytes and status bytes via
integrated fieldbus interface
•SSI-Sensor interface or analogue sensor interface (0….10V or 4…20mA)
•Simple and user-friendly sensor scaling
•Position resolution of 0.005 mm/s
•Principle of stroke-dependent deceleration for the shortest positioning time or NC profile
generator for constant speed
•Highly accurate positioning
•Advanced position control with PT1 controller, Drift compensation and Fine positioning
•Superimposed synchronization controller with PT1 (optimal for hydraulic applications)
•Optimal use with zero lapped control valves
•Synchronization control in Master/Slave or average value mode
•Fault diagnosis and extended function checking
•Simplified parameterization with WPC-300 software

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2.1 Device description
25 26 27 28 41 42 43 44
45 46 47 48
V:
ID:
D-41372 Niederkrüchten
Homepage: http://www.w-e-st.de
W.E.ST. Elektronik
Add.:Date:
Made in Germany
1 2 3 4
5 6 7 8
910 11 12
14 15 1613
Ready A B
46 47 4845
42 43 4441
34 35 3633
38 39 4037
30 31 3229
26 27 2825
18 19 2017
Profibus 9pol SUB-D
Online
W.E.ST.
1 2 3 4
5 6 7 8
910 11 12
14 15 1613
Ready A B
46 47 4845
42 43 4441
34 35 3633
38 39 4037
30 31 3229
26 27 2825
18 19 2017
W.E.ST.
RUN ERR
114,0000mm
67,5000mm
99,0000mm
Type plate and terminal pin assignment
13 14 15 16
13 14 15 16
29 30 31 32
121,0000mm
Only Profibus version
Fieldbus state
LED display
Terminals
(removable)
Fieldbus interface
2 * RJ45 / 9 pin D-SUB
Activity
USB
interface
Application
LEDs

Page 10 of 70 POS-124-U 24.01.2022
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 a requirement that no
strong electro-magnetic interference sources are installed nearby when using our control and regula-
tion modules.
•Typical installation location: 24V 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 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 shielded.
•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 possi-
ble. 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 inter-
ference 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 bet-
ter 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.