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9. TROUBLESHOOTING
Display
Name
Definition
Cause
Action
(Note 2)
Alarm details
AL.24 Main circuit
error
Ground fault
occurred in servo
motor power (U, V,
W).
1. Power input wires and servo motor
power wires are in contact. (A power
input cable and a servo motor power
cable are in contact at the main circuit
terminal block (TE1).)
Modify the wiring.
2. Short or ground fault occurs at a servo
motor power cable.
(A sheath of a servo motor power
cable deteriorated, resulting in short or
ground fault.)
Repair the cable.
3. Driver fault.
<Checking method>
The alarm (AL.24) occurs even after
removing servo motor power cables
(U, V, W).
Change the driver.
4. Servo motor fault.
<Checking method>
The servo motor power cables (U, V,
W) are disconnected on the servo
motor terminal side. After that, the
servo motor is turned on, and the
alarm (AL.24) does not occur.
Change the servo motor.
5. External dynamic brake fault
<Checking method>
The servo motor power cables (U, V,
W) are disconnected on the external
dynamic brake terminal side. After
that, the servo motor is turned on, and
the alarm (AL.24) does not occur.
1. Check parameters and
the dynamic brake
interlock.
2. Replace the external
dynamic brake.
6. External noise caused erroneous
operation to the overcurrent detection
circuit.
<Checking method>
1. Check that the driver is not
influenced by noise of magnetic
valves, magnetic contactors or
relays.
2. Check the grounding of the driver
and the servo motor.
Ground correctly or take
noise reduction measures.
Содержание LECSB Series
Страница 1: ...PRODUCT NAME AC Servo Motor Driver MODEL Series LECSB Series Doc no JXC OMT0021 B ...
Страница 17: ...7 App 6 Compliance with the European EC directives App 7 App 7 Conformance with UL C UL standard App 10 ...
Страница 255: ...10 1 10 OUTLINE DRAWINGS 10 OUTLINE DRAWINGS 2 10 1 Driver 2 10 2 Connector 4 ...