Filter Settings; Deadband And Sensitivity Settings; Figure 4-5 Motor Positioner Board - Honeywell HercuLine 10260A Installation, Operation And Maintenance Manual

Select the fail-safe setting for the event of a loss of input signal (signal from the controller to the Motor
Positioner). There are two fail-safe choices, selectable by jumper W2: stop the actuator immediately, or
bring the actuator to a stop at some particular position.
1. To cause the actuator to stop immediately if input signal is lost, install W2 so that it connects the center
and "STOP" terminals.
2. To cause the actuator to move to a particular position if input signal is lost, place W2 so that it
connects the center and "SET POS," terminals. Then select the particular positioner that you want, as
follows (you may select fully up, fully down, or any point in between).
3. With the W2 jumper installed in "SET POS" position, apply power and interrupt the input signal. The
actuator will move to some random position and stop.
4. Adjust FAILSAFE SET potentiometer (R14) until the actuator is positioned at the desired fail-safe
point.
To disable this fail-safe feature, remove W2.
R1 4
Fail-Safe Set

4.7.5 Filter Settings

If the input signal to the Motor Positioner contains transients or spurious signals, hunting or chattering of
the actuator may occur. Use the FILTER potentiometer (R1) to smooth the input signal. Turn R1 clockwise
to increase filtering.

4.7.6 Deadband and Sensitivity Settings

It is sometimes desirable to introduce some amount of "deadband" between the Motor Positioner and the
actuator. (Within this "deadband" zone, the actuator can be moved manually for some distance back and
forth without causing a correcting signal from the Motor Positioner.)
The adjustment for "deadband" or "Actuator Sensitivity" is potentiometer R19, labeled "D.U.Sens". Turn
R19 counterclockwise to increase the amount of deadband. The adjustment can be made from 0.2 % span
with R19 turned fully clockwise to 5 % with R19 turned fully counterclockwise.
2/03 10260A Series Actuators – Installation, Operations, and Maintenance
W2 JUM P E R (S HO WN IN 'S T O P ' PO S IT IO N)
R1 9
R7 S P AN
D.U.S E NS .
R1 1
R1 F I L T E R
ZE RO

Figure 4-5 Motor Positioner Board

Calibration Procedures
W1 JUM P E R (S HO WN IN "DO WN" P O S IT IO N)
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