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Parker Hannifin Corporation
TFP 5715-734UK.indd 24.06.22
2-Way Servo Proportional Valves
Series TFP
Operation Manual
Wiring Diagram of Supply Voltage
Electrical Interfacing
Supply Voltage
The supply voltage for the valve has to cover the
range of 22...30 V. Valve is de-energized below
19 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 valve must be free of inductive surges.
Do not exceed the max. value of 30 V! Higher
voltage can lead to failure of the 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 valve the
current limit circuit may respond prematurely
and create problems during energizing of the
supply voltage.
The operation of the valve is blocked if the
supply voltage polarity is interchanged.
Each valve requires a separate pre-fuse of 4
Amp semi time-lag. Failure to observe this
instruction may create irreparable damage of
valve respectively incorporated system parts.
The backshell nut of the cable gland has to be
tighten with a suitable tool. The target value for
the tightening torque is 4 Nm. Tighten the cap nut
with a torque of 5 Nm after attaching the female
connector on the socket.
Incomplete tightening of backshell nut respec-
tively cap nut may result in undesired release
of the connection as well as degradation of
the water tightness.
When using female connectors of other
manufacturers, the relevant regulations must
be
observed.
The cable may only be connected to the female
connector by authorized and qualified person
-
nel. A short between individual conductors
resp. to the connector housing, bad soldering
as well as improper shield connection may
result in malfunction and breakdown of the
valve.
The mounting surface of the valve has to be
connected to the earth grounded machine
frame. The earth ground wire from the valve
connecting cable as well as the cable shield
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 AWG 6).
