Troubleshooting - SymCom MotorSaver 250600 Installation Instructions

TROUBLESHOOTING

SYMPTOM
No lights are on. The unit
seems completely dead
Red light is blinking
(On initial installation
power up).
Red light is blinking
(After the motor has been
previously running).
Red light is blinking in this
pattern.
Red light is on steady.
Green light blinks, but
motor is not running.
Green light is on steady,
but motor does not start.
SymCom warrants its microcontroller based products against defects in material or workmanship
for a period of five (5) years* from the date of manufacture. All other products manufactured by
SymCom shall be warranted against defects in material and workmanship for a period of two (2)
years from the date of manufacture. For complete information on warranty, liability, terms, and
conditions, please refer to the SymCom Terms and Conditions of Sale document.
* The 520 Series has a one (1) year warranty and the LSRU series has a two (2) year warranty.
LIGHT
PATTERN
Measure the three line-to-line voltages. If any of
the voltages are below 150 VAC, the MotorSaver
does not have enough power to operate its internal
N/A
electronics. This may occur on a single-phased
system. If the voltages are correct, call SymCom at
1-800-843-8848 or 1-605-348-5580.
Turn off the three-phase power. Swap any two
leads powering the MotorSaver
There is a 50-50 chance of connecting L1, L2, and
L3 correctly the first time. Re-apply the three-phase
power.
The incoming lines have been reverse phased. The
MotorSaver
backwards. Correct the phase sequence.
The voltage is unbalanced or single-phased.
Measure the incoming line voltages and calculate
the % unbalance. If the voltage unbalance does not
exceed the % unbalance reset value, call SymCom
at 1-800-843-8848 or 1-605-348-5580.
The voltage is out of tolerance. Measure the three
line-to-line voltages. Calculate the average of
the three voltages. If the average is 7% above or
below the nominal voltage as selected by the LINE
VOLTAGE ADJUST, the MotorSaver
properly. If the voltage is within ±7% of the selected
line voltage, call SymCom at 1-800-843-8848 or
1-605-348-5580.
The MotorSaver
trol devices are allowing the motor to start. Check
control circuit for loose wires or
malfunctioning switches.
-3-
SOLUTION
is preventing the motor from running

The MotorSaver is in restart delay.

is in run mode. Ensure other con-


(L1, L2, or L3).

is functioning

07/16/03