Parker PWD Series User manual

Bulletin HY11-5715-677/UK
Operation Manual
Series PWDXXA-40X
Design ³20
Electronic for
Proportional DC Valves
Parker Hannifin
Manufacturing Germany GmbH & Co. KG
Hydraulic Controls Division Europe
Gutenbergstr. 38
41564 Kaarst, Germany
Tel.: [phone]
E-mail: [e-mail]
Copyright © 2016, Parker Hannifin Corp.

2
PWDXXA-40X_20 5715-677 UK.indd 26.01.17
Electronic for proportional DC valves
Series PWDXXA-40X
Operation Manual
Parker Hannifin Corporation
Hydraulics Group
Parker Hannifin Corporation
Hydraulics Group
Offer of Sale
Please contact your Parker representation for a detailed ”Offer of Sale”.
FAILURE OR IMPROPER SELECTION OR IMPROPER USE OF THE PRODUCTS DESCRIBED
HEREIN OR RELATED ITEMS CAN CAUSE DEATH, PERSONAL INJURY AND PROPERTY
DAMAGE.
This document and other information from Parker-Hannifin Corporation, its subsidiaries and
authorized distributors provide product or system options for further investigation by users having
technical expertise.
The user, through its own analysis and testing, is solely responsible for making the final selection
of the system and components and assuring that all performance, endurance, maintenance,
safety and warning requirements of the application are met. The user must analyze all aspects
of the application, follow applicable industry standards, and follow the information concerning
the product in the current product catalog and in any other materials provided from Parker or its
subsidiaries or authorized distributors.
To the extent that Parker or its subsidiaries or authorized distributors provide component or
system options based upon data or specifications provided by the user, the user is responsible for
determining that such data and specifications are suitable and sufficient for all applications and
reasonably foreseeable uses of the components or systems.
WARNING — USER RESPONSIBILITY

3
Electronic for proportional DC valves
Series PWDXXA-40X
Operation Manual
PWDXXA-40X_20 5715-677 UK.indd 26.01.17
Parker Hannifin Corporation
Hydraulics Group
Parker Hannifin Corporation
Hydraulics Group
Contents Page
1. Introduction 4
1.1. Front view / dimensions 4
1.2. Ordering code 4
1.3. Name plate 4
1.4. Block diagram 5
1.5. Characteristics 5
1.6. Technical data 6
1.7. Signal flow diagram 7
2. Safety instructions 8
2.1. Symbols 8
2.2. Marking, name plates 8
2.3. Work at the electronics 8
3. Important details 8
3.1. Intended usage 8
3.2. Common instructions 8
3.3. Liability 8
3.4. Storage 8
4. Mounting / Installation 9
4.1. Scope of supply 9
4.2. Mounting 9
4.3. Operation limits 9
4.4. Electrical connection 9
4.5. Electrical interfacing 10
5. Operating instructions 19
5.1. Operating software program 19
5.2. Program installation 20
5.3. Software operating 21
5.4. Adjustment parameters 22
5.5. Guideline for closed loop applications 26
5.5.1. Application: Closed loop systems for position 26
5.5.2. Application: Closed loop systems for pressure (via pressure control valves) 30
5.6. Error messages 34
6. Maintenance 35
7. Trouble-shooting 35
8. Repair / Service 37

4
PWDXXA-40X_20 5715-677 UK.indd 26.01.17
Electronic for proportional DC valves
Series PWDXXA-40X
Operation Manual
Parker Hannifin Corporation
Hydraulics Group
Parker Hannifin Corporation
Hydraulics Group
1. Introduction
1.1. Front view / dimensions
Position
control
universal
Electronic
module for
DC valves
Design
series
Amplifier,
Min/Max adjustment,
accel/decel ramps,
command input
Technology
function
1.2. Ordering code
Code Function
0 Standard
1 Linearization
1.3. Name plate
XXPWD A 40

5
Electronic for proportional DC valves
Series PWDXXA-40X
Operation Manual
PWDXXA-40X_20 5715-677 UK.indd 26.01.17
Parker Hannifin Corporation
Hydraulics Group
Parker Hannifin Corporation
Hydraulics Group
1.4. Block diagram
Parker electronic modules PWDXXA-40X for rail
mounting are compact, easy to install and provide
time-saving wiring by disconnectable terminals.
The digital design of the circuit results in good
accuracy and optimal adaption for proportional
directional control valves with position sensor by
a comfortable interface program.
1.5. Characteristics
The described electronic unit combines all neces-
sary functions for the optimal operation of pro-
portional directional control valves with position
sensor. The most important features are:
• digital circuit design
• parametrizable control as position control for
valve spool or external closed loop control
• constant current control
• differential input stage with different signal options
• monitor output for spool stroke/feedback, status
output
• four quadrant ramp function
• enable input for solenoid driver
• status indicator
• parametering by serial interface RS-232C
• connection by disconnectable terminals
• compatible to the relevant European EMC-
standards
• Comfortable PC user software, free of charge:
www.parker.com/euro_hcd - see "Support", or
directly at www.parker.com/propxd.
• optional technology function "linearization"

6
PWDXXA-40X_20 5715-677 UK.indd 26.01.17
Electronic for proportional DC valves
Series PWDXXA-40X
Operation Manual
Parker Hannifin Corporation
Hydraulics Group
Parker Hannifin Corporation
Hydraulics Group
General
Model Module package for snap-on mounting on EN 50022 rail
Package material Polycarbonate
Inflammability class V0 acc. UL 94
Installation position Any
Ambient temperature range [°C] -20...+60
Protection class IP 20 acc. EN 60529
Weight [g] 160
Electrical
Duty ratio [%] 100
Supply voltage [VDC] 18...30, ripple < 5 % eff., surge free
Switch-on current typ. [A] 22 for 0.2 mS
Current consumption max. [A] 2.0
Pre-fusing [A] 2.5 A medium lag
Command signal options [V]
[mA]
[mA]
+10...0...-10, ripple < 0.01 % eff., surge free, Ri = 100 kOhm
+20...0...-20, ripple < 0.01 % eff., surge free, Ri = 200 Ohm
4...12...20, ripple < 0.01 % eff., surge free, Ri = 200 Ohm
< 3.6 mA = solenoid output off,
> 3.8 mA = solenoid output on (acc. NAMUR NE43)
Input signal resolution [%] 0.025
Differential input voltage max. [V] 30 for terminals 5 and 6 against PE (terminal 8)
11 for terminals 5 and 6 against 0 V (terminal 2)
Sensor supply [V] 18...30 (US), max. current <100 mA
Enable signal [V] 0...2.5: Off / 5...30: On / Ri = 100 kOhm
Status signal [V] 0...0.5: Off / Us: On / rated max. 15 mA
Monitor signal [V] +10...0...-10, rated max. 5 mA, signal resolution 0.4 %
Adjustment ranges Min
Max
Ramp
Zero offset
Current
Initial current
[%]
[%]
[s]
[%]
[A]
[%]
0...50
50...100
0...32.5
+100...-100
1.3 / 2.7 / 3.5
0...25
Interface RS-232C, DSub 9p. male for null modem cable
EMC EN 61000-6-2
Connection Screw terminals 0.2...2.5 mm², disconnectable
Cable specification [AWG]
[AWG]
16 overall braid shield for supply voltage and solenoids
20 overall braid shield for sensor and signal
Cable length [m] 50
Options
Technology function Code1 Software adjustable transfer function with 10 compensation points
for linearization of valve behaviour.
1.6. Technical data

7
Electronic for proportional DC valves
Series PWDXXA-40X
Operation Manual
PWDXXA-40X_20 5715-677 UK.indd 26.01.17
Parker Hannifin Corporation
Hydraulics Group
Parker Hannifin Corporation
Hydraulics Group
1.7. Signal flow diagram

8
PWDXXA-40X_20 5715-677 UK.indd 26.01.17
Electronic for proportional DC valves
Series PWDXXA-40X
Operation Manual
Parker Hannifin Corporation
Hydraulics Group
Parker Hannifin Corporation
Hydraulics Group
3.2. Common instructions
We reserve the right of technical modifications of
the described product. Illustrations and drawings
within this manual are simplified representations.
Due to further development, improvement and
modification of the product, the illustrations might
not match precisely with the described valve. The
technical specifications and dimensions are not
binding. No claim may resulting from it. Copyrights
reserved.
3.3. Liability
The manufacturer does not assume liability for
damage due to the following failures:
• incorrect mounting / installation
• improper handling
• lack of maintenance
• operation outside the specifications
Do not disassemble the electronics! In case
of suspicion for a defect please return the unit
to the factory.
3.4. Storage
In case of temporary storage the electronics must
be protected against contamination, atmospheric
exposure and mechanical damages.
2. Safety instructions
Please read the operation manual before installa-
tion, startup, service, repair or stocking! Paying no
attention may result in damaging the electronics or
incorporated system parts.
2.1. Symbols
This manual uses symbols which have to be fol-
lowed accordingly:
Instructions with regard to the warranty
Instructions with regard to possible dam-
aging of the electronics or linked system
components
Helpful additional instructions
2.2. Marking, name plates
Instructions applied on the electronics, i.e. wiring
diagrams and name plates, must be observed and
maintained legibly.
2.3. Work at the electronics
Working in the area of installation and commis-
sioning of the electronics may only be allowed
by qualified personnel. This means persons who
due to education, experience and instruction, have
sufficient knowledge of relevant directives and ap-
proved technical rules.
3. Important details
3.1. Intended usage
This operation manual is valid for module elec-
tronics PWDXXA-40X series. Any use diverging
or going beyond is deemed to be as not intended.
The manufacturer is not liable for warranty claims
resulting from this.

9
Electronic for proportional DC valves
Series PWDXXA-40X
Operation Manual
PWDXXA-40X_20 5715-677 UK.indd 26.01.17
Parker Hannifin Corporation
Hydraulics Group
Parker Hannifin Corporation
Hydraulics Group
Dimensions assembly rail
Work flow for module installation
Mounting:
1. Apply the module with the assembly rail guide
at the lower edge of the rail.
2. Engage the module upward.
Removing:
1. Lift the metal socket lock with a suitable screw-
driver (approx. 4 x 1 mm blade) against the spring
force.
2. Unmount the module at the top edge of the as-
sembly rail.
4. Mounting / Installation
4.1. Scope of supply
Please check immediately after receiving the elec-
tronics, if the content is matching with the specified
scope of supply. The delivery includes:
• module electronics
• operation manual
Please check the delivery immediately after
receiving the shipment for apparent damages
due to shipping. Report shipment losses at
once to the carrier, the insurance company
and the supplier!
4.2. Mounting
• Compare electronics type (located on the name
plate) with part list resp. circuit diagram.
• The module may be mounted in any direction.
• The module has to be mounted within a shielded
environment (i.e. control cabinet).
• For mounting an assembly rail acc. EN 50022 is
required.
4.3. Operation limits
The electronics may be operated within the de-
termined limits only. Please refer to the “technical
data” section.
Follow the environmental conditions! Unal-
lowable temperatures, shock load, moisture
exposure, radiation exposure, illegal electro-
magnetic emmissions may result in operating
trouble and may lead to failure! Follow the
operating limits listed in the “specifications”
table!
4.4. Electrical connection
The electrical connection of the module electron-
ics takes place by disconnectable screw terminal
blocks.
This easy-to-install connection type allows a
fast module replacement and a visible sepa-
ration of the electrical connection. An addi-
tional folding unlocking lever allows simple
removing of the terminal blocks and serves
at once as shock hazard protection and mark-
ing strip.

10
PWDXXA-40X_20 5715-677 UK.indd 26.01.17
Electronic for proportional DC valves
Series PWDXXA-40X
Operation Manual
Parker Hannifin Corporation
Hydraulics Group
Parker Hannifin Corporation
Hydraulics Group
Skinning length for the connection wires
Wiring diagram of supply voltage
The connecting wires have to comply to the follow-
ing specification:
Wire type: hookup cable, stranded
Cross sections: supply and solenoids min.
AWG 16/1.5 mm²
sensor and signals min.
AWG 20/0.5 mm²
Wire length: max. 50 m
For wire lengths > 50 m consult factory.
The screw terminals are designed to allow termina-
tion of all kinds of copper wires without the need
for preparation. Copper made wire end sleeves
may usable as conductor stripping protection for
the stranded wires.
Soldering of the connection wires is not per-
mitted.
To ensure EMC-compatibility the wiring of the mod-
ule has partly to be undertaken by shielded cables.
Detailed information can be read from the chapter
“Electrical Interfacing”.
The installation has to take place by qualified
personnel! A short between individual con-
ductors, loose wires as well as improper
shield connection may result in malfunction
and breakdown of the electronics resp. the
connected valve!
The mounting surface of the valve has to be
carefully tied to the earth grounded machine
frame. The earth ground wire from terminal
8 as well as the cable shields have to be tied
to the protective earth terminal within the
control unit. It is necessary to use a low
ohmic potential connection between control
unit and machine frame to prevent earth loops
(cross section min. AWG 6 / 10 mm²).
4.5. Electrical interfacing
Supply Voltage:
The supply voltage for the electronics will be con-
nected to the terminals 1 and 2 of the module
electronics and has to cover the range of 18...30 V.
The residual ripple may not exceed 5 % eff.
The applied power supply must comply to the
relevant regulations (DIN EN 61558) and
must carry a CE-mark.The operating voltage
for the electronics must be free of inductive
surges. Do not exceed the max. value of
30V! Non-observance of this rule may result
in permanent damaging of the electronics
resp. the connected valve!
The increased inrush current of the valve
should be considered when selecting the
power supply. A stabilized power supply with
overcurrent limiting feature should not be
used. Due to the inrush current of the elec-
tronics the current limit circuit may respond
prematurely and create problems during
energizing of the supply voltage.
The operation of the electronics is blocked if
the supply voltage polarity is interchanged.
Each electronics requires a separate pre-fuse
of 2.5 Amp time lag. Non-observance of this
instruction may create irreparable damage of
electronics resp. incorporated system parts.