Prop. Directional Control Valve
Series D*FB / D*1FB
Operation Manual
13
D_FB-D_1FB 5715-669 UK.indd CM
Parker Hannifin GmbH
Hydraulic Controls Division
Wiring diagram of supply voltage
Code F0/M0/S0/G0 (6 + PE)
Code W5 (11 + PE)
Incorrect signal amplitude levels may disturb
the functionality and can damage the valve.
The option 4...20 mA uses the “0 mA“ condition
as breakdown-information. This means the
presence of an evaluable failure information
if the input signal line is interrupted. In this
case the actuator drive will be switched off.
The drive will switch on when the input signal
reaches a value of 3.8 mA, it switches off
when the command falls below 3.6 mA. This
determination follows the NAMUR-specifica-
tion NE43.
NAMUR is an association of users of process
control technology.
Command signal input:
The command signal for the valve will be connected
to the difference signal input of the electronic driver.
The solenoid current behaves proportional to the
command signal amplitude. Different versions of
command signal processing are available, depend-
ing on the valve type. These are described below:
For the function description is assumed as signal
reference (0V):
Code F0/M0/S0/G0: pin E, Code W5: pin 5
Details are shown from the technical specifi-
cations.
The command input signal needs to be filtered
as well as free of inductive surges and mo-
dulations. Due to the sensitivity of the valve a
high signal quality is recommended, this will
prevent malfunction.
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