Parker DFB Series, Operation Manual, Page: 22 / 28

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D_FB-D_1FB 5715-669 UK.indd CM
Prop. Directional Control Valve
Series D*FB / D*1FB Operation Manual
Parker Hannifin GmbH
Hydraulic Controls Division
Individual Description of Basic Parameters
S1
command signal S1
Adjustment of the internal command signal channel S1.
To attenuate of an external accessible command signal.
S2
command signal S2
Adjustment of the internal command signal channel S2.
To attenuate of an external accessible command signal.
S3
command signal S3
Adjustment of the internal command signal channel S3.
To attenuate of an external accessible command signal.
S4
command signal S4
Adjustment of the internal command signal channel S4.
To attenuate of an external accessible command signal.
S5
ramp accel. channel A
Adjustment of ramp rate for increasing of the positive signal polarity.
To avoid switching noise.
S6
ramp decel. channel A
Adjustment of ramp rate for decreasing of the positive signal polarity.
To avoid switching noise.
S7
ramp accel. channel B
Adjustment of ramp rate for increasing of the negative signal polarity.
To avoid switching noise.
S8
ramp decel. channel B
Adjustment of ramp rate for decreasing of the negative signal polarity.
To avoid switching noise.
P3
MAX +
Adjustment of maximum signal span for positive output signal.
To match the command signal span to the valve operating range.
P4
MAX -
Adjustment of maximum signal span for negative output signal.
To match the command signal span to the valve operating range.
P7
MIN +
Adjustment for positive output signal step at 0,1% command signal.
To compensate for the overlap of the valve spool.
P8
MIN -
Adjustment for negative output signal step at 0,1% command signal.
To compensate for the overlap of the valve spool.
P11
command signal polarity
Adjustment of the command signal polarity.
To match the command signal polarity to the valve operating direction.
E17
type of command signal
device
Adjustment of the command signal option.
To match the command signal input to the input signal mode.
E19
cable break detection
command
Adjustment of the operating mode for the command cable break
detection. To turn on resp. off of the cable break detection of the
command signal at a selected command signal option of 4...20 mA.
E25
MIN operating threshold
Adjustment of the MIN operating threshold.
To match the response sensitivity for the MIN-stroke step.
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