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Calibrating the proportional control board
This procedure will assume that the actuator is installed correctly both mechanically and electrically with correct
POWER and SIGNAL.
1. Actuator is in full CLOSED position.
Preset the Feedback and Trip Adjust
2. Disconnect the motor wire from terminal J1T4 (DMC-102).
3. On the Switch Card, connect POWER.
4. Set Feedback Potentiometer to 0.300V as measured across J1T2
and J1T3 (+) (DMC-102).
5. Reconnect the motor wire to J1T4 (DMC-102).
Check Dip Switches 1 – 5 for proper Signal Input and Loss of
Signal Control
6. Dip Switches 1 and 2 for Input Signal Range per table on Page 5.
7. Dip Switches 3 and 4 for proper Loss of Input Signal per table
provided on Page 5.
8. Dip Switch 5 must be off during calibration.
Set the CW (Close) Signal Input
9. Command the SIGNAL to generate a full CLOSE input
(i.e. 4mA).
9.A On DMC-102, turn ZERO trimmer CW to move
AWAY from 0 degrees.
9.B Turn ZERO trimmer CCW to move CLOSER to
0 degrees.
9.C Turn ZERO trimmer slowly towards CCW just until
GRN LED stays flashing.
Set the CCW (Open) Signal Input
10. Command the SIGNAL to generate a full OPEN input (i.e.
20mA).
10.A On DMC-102, turn SPAN trimmer CCW to move
AWAY from 90 degrees.
10.B Turn SPAN trimmer CW to move CLOSER to
90 degrees.
10.C Turn SPAN trimmer slowly towards CW just until
RED LED stays flashing.
Set the CW (Close) Feedback
11. Input full CLOSE signal (i.e. 4mA). to the actuator and
wait for full CLOSED position.
12. On XMA-105, adjust ZERO trimmer to read 4mA at XMA
(-) & (4-20).
Set the CCW (Open) Feedback
13. Input full OPEN signal (i.e. 20mA). to the actuator and
wait for full OPEN position.
14. On XMA-105, adjust SPAN trimmer to read 20mA at XMA
(-) & (4-20).
Calibration is complete.
J2
J1
Motor wire
J1T4
J1T3
J1T2
Page 12 of 14 P2/3 12VDC Proportional Series
DMC-102 CONTROLLER
Dip Switches
RED
GREEN
XMA-105 FEEDBACK GENERATOR
SPAN
ZERO
ZERO
4-20mA
out+
4-20mA
out-
SPAN
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