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ACT2000
Table 4-2 ACT2000 In-Service Troubleshooting Chart
Symptom Probable Causes Corrective Action
FAULT alarm Various Upload Fault File to identify source of fault
OVER TEMP alarm Ambient temperature limit
exceeded
Electronics or Motor winding
temperature out of range
Allow actuator to cool and re-start
Reduce ambient temperature
Check for jammed extension rod
FAULT and OVERTEMP
alarm
No 120VDC Power
DSP Failure
Ensure 120 VDC at actuator
Contact factory
For troubleshooting purposes use Table 4-3 to verify the actuator electrical continuity integrity.
Disconnect the actuator power and digital harness connectors and use a digital multimeter (DMM)
to check the resistance values between the wires indicated on the table. If an open circuit is
detected, send actuator to Precision Engine Controls Corporation for test and repair.
WARNING:
Shock Hazard – Remove all power to actuator prior to continuity check
Table 4-3 ACT2000 Electrical Hook-Up Continuity Troubleshooting Chart
Function Actuator Wire Colors Resistance Value
DEMAND BRN and WHT/BRN
225Ω
RUN VIO and WHT/VIO
4.7KΩ
RESET GRY and WHT/GRY
4.7KΩ
POWER RED and WHT/RED High Impedance, but not
open circuit.
MOTOR CURRENT BLU and WHT/BLU High Impedance
POSITION YEL and WHT/YEL High Impedance
FAULT ALARM ORN and WHT/ORN High Impedance
OVERTEMP BLK and WHT/BLK High Impedance
4-3