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.
Summary of Contents for PWD Series
Page 38: ......
