Why is the red light blinking on my SymCom Relays after the motor has been running?
The red light blinks after the motor has been previously running because the incoming lines have been reverse phased. To resolve this, correct the phase sequence.
What to do if red light is blinking in a pattern on SymCom Relays?
A blinking red light indicates voltage unbalance. Measure the incoming line voltages and calculate the % unbalance. If voltage unbalance does not exceed the % unbalance set on the front, try pressing the manual reset button. If this does not reset the 460, call SymCom at 1-800-843-8848.
How to troubleshoot SymCom Relays with no lights on and the unit seems completely dead?
Measure the three line-to-line voltages. If any of the voltages are below 150 VAC, the Model 460 does not have enough power to operate its internal electronics. This may occur on a single-phased system. If the voltages are correct, call SymCom @ 1-800-843-8848.
Why does the green light blink but the motor doesn't start on SymCom Relays?
The Model 460 is in restart delay. This occurs only when the manual reset jumper is in place.
What does it mean when the red and green lights flash in unison on SymCom Relays?
The 460 is waiting for a manual reset.
What to check if the green light is on steady but the motor doesn't start on SymCom Relays?
Check control circuit for loose wires or malfunctioning switches.
Mount the device in a convenient location or NEMA 4/12 enclosure using screws or DIN rail.
Connect L1, L2, and L3 to the LINE SIDE of the motor starter.
Connect output relay contacts for motor control or alarm operation.
Adjust the VOLTAGE ADJ. (VAC) dial to the nominal three-phase line voltage.
Set the RESTART (SEC) dial for desired delay before closing output contacts.
Set the TRIP DELAY (SEC) dial for desired tripping delay, excluding phasing faults.
Adjust UNBALANCE TRIP (NEMA%) for desired unbalance trip level.
Turn on power; RUN light blinks during RESTART delay, illuminates upon successful operation.
Understand the meaning of RUN, RESTART DELAY, REVERSE PHASE, UNBALANCE/SINGLE PHASE indicator lights.
Diagnose issues based on light patterns and symptoms like no power, phase faults, or voltage issues.
General| Phase | 3-phase |
|---|---|
| Frequency | 50/60 Hz |
| Enclosure | NEMA 1 |
| Protection Features | Phase Loss, Phase Reversal |
| Mounting | DIN Rail |
| Relative Humidity | 5% to 95% (non-condensing) |
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