Troubleshooting
Alarms and Warnings
9 - 4
Display
Error
Definition
Cause
Action
10
Undervoltage
Power supply
voltage dropped to
160V (servo
amplifier 200V) and
280V (servo
amplifier 400V) or
less, respecively.
1. Power supply voltage is low.
Check the power
supply
2. There was an instantaneous control
circuit power failure of 60ms or longer.
3. The impedance of the power supply
is too high.
4. Main circuit power switched on
within 5s after it had switched off.
5. Faulty parts in the servo amplifier
Change the servo
amplifier
12
Memory error 1
RAM, memory fault
Faulty parts in the servo amplifier
Checking method: Alarm (12–15)
occurs if power is switched on after
CN1A, CN1Band CN3 connectors are
disconnected.
Change the servo
amplifier
13
Clock error
Printed board fault
15
Memory error 2
E²PROM fault
16
Encoder error 1
Communication error
occurred between
encoder and servo
amplifier
1. Encoder connector (CN2)
disconnected.
Connect correctly
2. Encoder fault
Change the servo
motor
3. Encoder cable faulty
(Wire breakage or shorted)
Repair or change
cable
17
Board error 2
CPU/parts fault
Faulty parts in the servo amplifier
Checking method: Alarm 17 or 19
occurs if power is switched on after
CN1A, CN1B and CN3 connectors are
disconnected.
Change the servo
amplifier
19
Memory error 3
ROM, memory fault
1A
Motor
combination error
Wrong combination
of servo amplifier
and servo motor.
Wrong combination of servo amplifier
and servo motor connected.
Use correct
combination
20
Encoder error 2
Communication error
occurred between
encoder and servo
amplifier
1. Encoder connector (CN2)
disconnected
Connect correctly
2. Encoder fault
Change the servo
motor
3. Encoder cable faulty
(Wire breakage or shorted)
Repair or change
cable
24
Main circuit error
Connection between
load circuit and earth
potential
1. Power input wires and servo motor
output wires are in contact at main
circuit terminal block (TE1).
Connect correctly
2. Too little insulation resistance
between cable or motor and earth
potential
Change the cable
3: Main circuit of servo amplifier failed.
Checking method: Alarm 24 occurs if
the servo is switched on after
disconnecting the U, V, W power
cables from the servo amplifier.
Change the servo
amplifier
Tab. 9-2:
Failure corrective action (1)
Содержание MELSERVO MRJ2S-B
Страница 2: ......
Страница 4: ......
Страница 6: ......
Страница 14: ...VIII ...
Страница 18: ...Contents XII ...
Страница 48: ...Introduction System configuration 1 30 ...
Страница 58: ...Installation General environmental conditions 2 10 ...
Страница 86: ...Connection Station number setting 3 28 ...
Страница 122: ...Operation Gain 4 36 ...
Страница 134: ...Absolute position detection system General description 6 6 ...
Страница 146: ...Accessories Special accessories 7 12 ...
Страница 148: ...Maintenance and Inspection Life 8 2 ...
Страница 174: ...Specifications Standard specifications 10 16 ...
Страница 176: ...EMC Directives Requirements 11 2 ...
Страница 198: ...Index iv ...
Страница 199: ......