14. DEFAULT SETTINGS AND MODES
Board Section Function Condition State
Back of Board Torque Small Actuator Pot Mid
Large Actuator Pot Full CW
Heater Low Power Full CCW
Battery (with battery installed) Sealed Lead Acid Pot 3/4 CW
Battery (no battery installed) None Full CW
Position Feedback Power External Switch Down
Signal 4-20mA Switch Down
On/Off Control Control Mode 2 Wire CCW Pot Full CCW
Position Control Input 4-20mA Switch Down
Signal Fail Zero Switch Up
Dead Band Min Pot Full CCW
Power Fail Control Park/Multi Park Switch Up
CCW/Mid/CW CW Pot Full CW
Limit Smart/Cam Smart Switch Up
Power Consumption Normal/Energy Save Normal Switch Up
Operation Mode Selector Run Pot Full CCW
15. TROUBLESHOOTING
Symptom: Actuator Stall LED is blinking in a mid-travel
position.
Fix: This could be due to hunting; increase actuator
Deadband or adjust controller’s setpoint tolerance.
Symptom: Actuator does not respond to 4-20mA or 0-10V
control signal.
Fix: Verify that Analog Position Control Mode has been
selected. If the problem persists calibration is required.
Symptom: No Feedback in Energy Save mode.
Fix: If the Feedback wires are removed from the terminal
block, even briefly, the Feedback signal is turned off; ensure
the wires are connected and cycle power to reinstate
Feedback signal.
Symptom: LED’s shut off after a minute.
Fix: Check to see if Energy Save mode has been selected;
LEDs are turned off after one minute in Energy Save mode
in order to reduce power consumption.
IMO 6/18
18 IMO-I4900 EN
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