JORDAN CONTROLS SM-1715, Instruction Manual

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13
a. Power not applied for other
direction
a. Correct power problem
b. Power always applied to one
direction and electrically stalls when
applied for opposite direction
b. Correct power problem
c. Open limit switch for other
direction c. Adjust or replace limit switch as
required
d. Actuator is torqued out d. Determine obstruction and correct
e. Motor has an open winding e. Replace motor
f. Motor and feedback potentiometer
are out of phase
f. Reverse potentiometer end leads
g. Amplifier is defective g. Replace amplifier
a. Amplifier deadband is too wide a. Reduce deadband setting
b. Amplifier is defective b. Replace amplifier
c. Excessive noise on command
signal
c. Reduce noise. Also ensure that
command signal wiring is shielded
with shield grounded at source
common only.
d. Defective feedback potentiometer d. Replace potentiometer
a. Amplifier deadband is too narrow a. Increase deadband setting
b. Amplifier is defective b. Replace amplifier
c. Excessive noise on command
signal
c. Reduce noise. Also ensure that
command signal wiring is shielded
with shield grounded at source
common only.
a. Pot not aligned with end of travel
extremes and is being driven through
dead region
a. Align pot to range of actuator
b. Pot signal is erratic or nonexistent b. Replace pot
a. Defective pot a. Replace pot
b. Feedback gear not turning pot
shaft b. Check gearing engagement and
set screw in gear hub
Pot signal is reversed for output shaft
rotation
a. Pot is wired wrong
a. Reverse wiring from ends of pot at
actuator terminal block
a. Wiring to actuator incorrect a. Correct field wiring
b. Wiring from motor to terminals or
switches is reversed
b. Correct internal actuator wiring
a. External wiring error a. Refer to IM-0607
b. Power supply fault b. Refer to IM-0607
c. Shunt resistance too light c. Refer to IM-0607
Motor runs, but only one way
Pot feedback signal not always
present during actuator rotation
Poor response to command signal
changes
4-20 mA customer feedback missing
or non-linear
Output shaft rotates wrong direction
for CW and CCW input power
Pot signal does not change as
actuator operates
Actuator oscillates at setpoint
Troubleshooting Guide