Parker Series ED104 User manual

Bulletin HY11-5715-481/UK
Power Amplifier for
Pressure Valves
Installation Manual
Series ED104
Parker Hannifin GmbH & Co. KG
Hydraulic Controls Division
Gutenbergstr. 38
41564 Kaarst, Germany
Tel.: [phone]
Fax: [phone]
E-mail: [e-mail]
Copyright © 2004, Parker Hannifin GmbH & Co. KG

2
IA ED104 UK.INDD RH 02.06
Power Amplifier for Pressure Valves
Series ED104
Installation Manual
Parker Hannifin GmbH & Co. KG
Hydraulic Controls Division
Note
This document and other information from Parker Hannifin GmbH,
its subsidiaries, sales offices and authorized distributors provide
product or system options for further investigation by users having
technical expertise. Before you select or use any product or system
it is important that you analyse all aspects of your application
and review the information concerning the product or system in
the current product catalogue. Due to the variety of operating
conditions and applications for these products or systems, the
user, through his own analysis and testing, is solely responsible
for making the final selection of the products and systems and
assuring that all performance and safety requirements of the
application are met. The products are subject to change by Parker
Hannifin GmbH at any time without notice.

Power Amplifier for Pressure Valves
Series ED104
Installation Manual
3
IA ED104 UK.INDD RH 02.06
Parker Hannifin GmbH & Co. KG
Hydraulic Controls Division
Electronic module for the control of proportional
pressure relief valves. The pressure values and the
changing sequence are determined by externally
applied command signals as well as internal limit and
ramp potentiometers. There is a linear relationship
between input signal and the solenoid current. The
pressure value behaves of the valve characteristics
and depends partly of the flow.
Features
• Processing and amplification of the externally
supplied positive commands into output signals
for the control solenoid.
• Can be combined with EZ150 or external pro-
grammable control.
• DIP switch from internal ramp generation to
external ramp setting.
• MIN/MAX limiters for matching the working range
to the full command signal range.
• Pulsed low loss amplifier power stage with sup-
porting constant current control for consistant,
temperature-independant, solenoid forces.
• Dither generator with applied frequency to
improve static characteristics.
• Diagnosis by means of diagnostic sockets as
well as LEDs for indicating working conditions.
Characteristics
Ordering Code
Design
Series
Module
Type Amplifier,
adjustable Min/
Max-limits
Up/Down-ramps
Electronic Module
Pressure Valves
DSA, DWU, DWE, RE
Power supply range [V] 22...38, ripple max. 5%
Power required [VA] max. 40
Set value voltage [VDC] 0...+10
Input select voltage [VDC] 5...30
Reference outputs [V] +10, max. 10mA
Solenoid output current max. [A] 1.3
Ramp times [s] 0...5
Ambient temperature [°C] 0...+60°C
Connection 31pole male connector, DIN 41617
Shielded cable connections Supply connections and valve: AWG16; Commands: AWG20
Fuse 2A medium lag, DIN 41571
ED 10400

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IA ED104 UK.INDD RH 02.06
Power Amplifier for Pressure Valves
Series ED104
Installation Manual
Parker Hannifin GmbH & Co. KG
Hydraulic Controls Division
Block Diagram
Connector (Elevation B)
14 Input command voltage 0...+10 VDC
16 Output +10V reference
18 Input 24VDC supply
22 Input external ramp option
26 Output control solenoid
11 Reference potential 0V supply
13 Input ramp disable
25 Output control solenoid
27 Input external ramp option
31 Reference potential 0V set value
EMC
EN 50081-2 EN 55011
EN 50082-2 ENV 50140 EN 61000-4-4 ENV 50204 EN 61000-4-5 EN 61000-4-2 EN 61000-4-6

Power Amplifier for Pressure Valves
Series ED104
Installation Manual
5
IA ED104 UK.INDD RH 02.06
Parker Hannifin GmbH & Co. KG
Hydraulic Controls Division
Operating and Diagnostic Elements
(Elevation A)
Dimensions
(Eurocard)
Notes
Turn off the electrical power
to this board whenever the
hydraulic supply to the valve
is not on.
Always turn off the power to
this board before removing it
from the card holder.
Only potential-free measur-
ing equipment to be used
1 MIN-limiting for matching the lowest
pressure
2 MAX-limiting for matching the highest
pressure
3 Not used
4 Red socket for current diagnostic
5 Black socket for current diagnostic
6 Red LED (A) for
• function indicator control solenoid
• (B unused here)
7 Yellow LED for:
• correct voltage supply
8 Red grip strip with reference information
for measured values on the diagnostic
sockets
9 UP ramp potentiometer
10 Down ramp potentiometer

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IA ED104 UK.INDD RH 02.06
Power Amplifier for Pressure Valves
Series ED104
Installation Manual
Parker Hannifin GmbH & Co. KG
Hydraulic Controls Division
Installation guide to electronic modules to provi-
sion of electromagnetic compatibility
Power Supply
The utilized power supply has to comply with the
EMC-standards (CE-sign, certificate of confor-
mity).
Relais and solenoids operating from the same
supply circuit than the valve electronics has to be
fitted by surge protection elements.
Wiring Cable
The wires between the installation site of the module
and the peripheral units, as power supply, valve sole-
noids, position transducer, command signal source
has to be shielded. The following wire sizes must be
reached: power supply AWG 16, other connections
AWG 20. The capacity should not exceed a value of
approx. 130 pF/m (wire/wire). The maximum cable
length is 50m. No power current lines may be placed
within the wired shielded cables to the electronic
module. The cable shield has to be connected to
ground at both ends (see also chapter “Grounding“).
Please be aware of ground loops.
Connectors
The connection of the position transducer needs
a sensor connector 4pin+E featuring metal case
and integrated cable shield coupling. Parker can
provide suitable connectors:
5004108 (Connector 4pin+E)
The connectors has to be installed according
the connection diagram, the cable shield has to
be tied on the whole periphery to the provided
coupling clamp.
Installation
The module has to be mounted within a conductive,
shielded enclosure. Usable is i.e. an EMC-approved
control cabinet. A perfect grounding of the enclosure
is mandatory (see also chapter “Grounding“)
Grounding
The mounting plate of the valve has to be connected
to the grounded metal machine frame. The cable
shields must be tied to ground at the control cabinet.
A low-ohmic potential compen-sation wire has to
be provided between the control cabinet and the
machine frame (cable wire >AWG 7 cross section)
to prevent ground loops.