Mar 2013
Installation and Maintenance
Part Number: E2K-402-0313, Rev. A
16
Section 6: Futronic II 83957
Futronic II 83957
Section 6: Futronic II 83957
Figure 13
83957-1 (600 starts per hour maximum) or 83957-2 (100 starts per hour) module controls
valve by comparing two inputs (the desired position from process controller or computer
and actual valve feedback position). If the two are within BAND, valve will not move. When
the setpoint moves outside the BAND, valve moves in the direction to make control signal
and valve feedback position inputs balance.
6.1 Calibration
After eld wiring is complete, position limit switches have been set (Pg. 9) and Pot
adjustment on (Pg 15); proceed.
1. Voltmeter probes (+) in Red (FB) test point and (-) in Black (GND) test point.
2. Close valve: Meter should read 1 volt DC. If it does not adjust ZERO.
3. Open valve: Meter should read 5 volts DC. If it does not adjust SPAN.
4. Repeat steps 2 and 3 until no readjustment is necessary.
5. After a command signal has been connected, adjust BAND so valve moves to
desired setpoint. Delay: 83957-1 has a six (6)* second xed delay preventing
actuator from instantaneously responding to another signal. This allows reversing
contactor to respond at 600 starts per hour maximum.
NOTE:
Jumper JP1 is factory set: See Job Spec Sheet for JPI position. Loss of 4-20 mA control
signal will cause valve to (1) LST (last position will not move) or 2) CL valve will close. JPI
jumper plug may be eld changed.
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