Omron SMARTSTEP Junior R7D-ZP, User Manual

Page: 102 / 118

6-3 Troubleshooting
6-3-1 Error Diagnosis using the Alarm Indicators
LED
Indicators
Error
Status when error
occurs
Cause of error Countermeasure
The U phase, V phase, W phase, or
GR wires are wired incorrectly or the
connections are loose.
The GR terminal is linked to another
terminal.
Rewire correctly.
The following lines are shorted or
interconnected:
•
Interconnection of a U, V, or W
phase in Servomotor Power Cable
and ground
•
Interconnection between U, V, or
W phases in Servomotor Power
Cable
Repair or replace the
Servomotor Power Cable
Caution: Before turning on the
power, always verify that there
are no short-circuits or
interconnected lines.
The external Regeneration
Resistance Unit is wired incorrectly. Rewire correctly.
The following lines are shorted or
interconnected:
•
Interconnection of a Servomotor U,
V, or W phase and ground
•
Servomotor U, V, or W phases
Replace the Servomotor.
The load is too large and exceeds the
regenerative absorption capacity. Re-evaluate the load and
operating conditions.
There is a problem with the Servo
Driver’s installation environment, such
as the installation direction, spacing
between Units, or surroundings.
Review the installation
conditions so that the Servo
Driver’s ambient temperature is
below 55°C.
The Servo Driver’s cooling is
insufficient. Improve air circulation and
heat-dissipation.
The Servomotor and Servo Driver
combination is incorrect. Use compatible models.
The Servo Driver is faulty. Replace the Servo Driver.
AL1
AL2
AL3
Overcurrent Occurs when the
power is turned
ON or during
operation.
Servomotor is burned out. Replace the Servomotor.
AL1
AL2
AL3
Servo Driver
fan stopped Occurs when the
power is turned
ON or during
operation.
The Servo Driver’s built-in cooling fan
stopped. Replace the cooling fan. (Refer
to
6-5 Periodic Maintenance for
details.)
AL1
AL2
AL3
System error Occurs when the
power is turned
ON.
The Servo Driver is faulty. Replace the Servo Driver.
AL1
AL2
AL3
Flashing steadily
Command
pulse setting
rotary switch
(PULSE)
changed
Occurs when the
power is turned
ON or during
operation.
The command pulse setting rotary
switch was changed during operation. Turn the power supply OFF and
ON again.
Lit:
Not lit: Flashing:
6-7