TECO S310+ Series User Manual

5-4
OH-C, OV-C, OC-S, OC-d, OC-C, OC-a, OL2, OL1, the Alarm LED flashes slowly.
In order to release from the alarm, you can cut off the power of inverter, then turn it on again.
5.2 General troubleshooting
Status
Checking point
Remedy
Motor runs
in wrong
direction
Are wiring for output terminals
U, V, and W correct?
Wiring must match U, V, and W terminals of
the motor.
Are wiring for forward and
reverse signals correct?
Check for correct wiring.
The motor
speed can
not be
regulated
Is the wiring for the analog
frequency inputs correct?
Check for correct wiring.
Is the setting of operation mode
correct?
Check the operation mode of the operator.
Is the load too excessive? Reduce the load.
Motor
running
speed too
high or too
low
Check the motor specifications
(poles, voltage…) correct?
Confirm the motor specifications.
Is the gear ratio correct? Confirm the gear ratio.
Is the setting of the highest
output frequency correct?
Confirm the highest output frequency.
Motor speed
varies
unusually
Is the load too excessive? Reduce the load.
Does the load vary
excessively?
Minimize the variation of the load.
Increase capacities of the inverter and the
motor.
Is the input power erratic or is a
phase loss occurring?
Add an AC reactor at the power input side if
using single-phase power.
Check wiring if using three-phase power.
Motor can
not run
Is power applied to terminals (is
the charging indicator lit)?
1. Is the power applied?
2. Turn the power OFF and then ON again.
3. Make sure the power voltage is correct.
4. Make sure screws are secured firmly.‧
Is there voltage across the
output terminals U, V, and W?
Turn the power OFF and then ON again.
Is overload causing the motor
to stall?
Reduce the load so the motor will run.
Are there any abnormalities in
the inverter?
See error descriptions to check wiring and
correct if necessary.
Is forward or reverse run
command issued?
Has the analog frequency
signal been input?
1.
Is analog frequency
input signal wiring
correct?
2. Is voltage of frequency input correct?
Is the operation mode setting
correct?
Operate through the digital keypad .

TECO S310+ Series Specifications

General

Brand	TECO
Model	S310+ Series
Category	Controller
Language	English