Omron SMARTSTEP A Series User Manual

Chapter 5
5-7
Troubleshooting
5-3 Troubleshooting
If an error occurs in the machinery, check the type of error using the alarm indicators
and operation status, verify the cause, and take appropriate countermeasures.
5-3-1 Error Diagnosis Using Alarm Display
Display Error Status when
error occurs
Cause of error Countermeasures
Parameter
setting error
Occurs when con-
trol circuit power
supply is turned
ON.
A value outside of the set-
ting range was previously
set in the parameters.
Reset the parameters within
the setting range.
Control panel error Replace the Servo Driver.
Overcurrent Occurs when
power supply is
turned ON.
Control panel error
Main circuit transistor mod-
ule error
Replace the Servo Driver.
Occurs when
servo is turned
ON.
Current feedback circuit
error
Main circuit transistor mod-
ule error
Replace the Servo Driver.
Servomotor power line is
short-circuited or grounded
between phases.
Repair the short-circuited or
grounded wire.
Measure the insulation resis-
tance at the Servomotor and, if
there is a short-circuit, replace
the Servomotor.
Miswiring between U-
phase, V-phase, W-phase,
and ground.
Correct the wiring.
Servomotor winding is
burned out.
Measure the winding resis-
tance, and if the winding is
burned out, replace the Servo-
motor.
Operating above rated out-
put.
Lighten the load.
Regeneration
error
Occurs during
operation.
Error in the regenerative
circuit parts.
Replace the Servo Driver.
External Regeneration
Resistor is disconnected.
Replace the External Regener-
ation Resistor.
There is a short-circuit
missing between B2 and
B3, but the external circuit
resistor is not connected.
Correctly connect the external
circuit resistor (between B1
and B2).
Setting error in Pn600
(regeneration resistor
capacity).
Set Pn600 correctly.

Omron SMARTSTEP A Series Specifications

General

Brand	Omron
Model	SMARTSTEP A Series
Category	Servo Drives
Language	English