sh030051g.pdf - 第177页

8 - 4 8. TROUBLESHOOTING Display Name Definition Cause Action 30 Regenerative error Permissible regenerative power of the built-in regenerative resistor or regenerative option is exceeded. 1. Wrong setting of parameter N…

100%1 / 424
8 - 3
8. TROUBLESHOOTING
Display Name Definition Cause Action
12 Memory error 1
(RAM)
RAM, memory fault Faulty parts in the servo amplifier
Checking method
Alarm (any of 12 and 13)
occurs if power is switched on
after disconnection of all cables
but the control circuit power
supply cables.
Change the servo amplifier.
13 Clock error Printed board fault
Clock error
transmitted from the
controller
Faulty controller
Checking method
Alarm (13) occurs, if servo
controller is used in multiple CPU
system.
Change the servo system controller.
15 Memory error 2
(EEP-ROM)
EEP-ROM fault
1. Faulty parts in the servo amplifier
Checking method
Alarm (15)
occurs if power is switched on
after disconnection of all cables
but the control circuit power
supply cables.
Change the servo amplifier.
2. The number of write times to EEP-
ROM exceeded 100,000.
16 Encoder error 1
(At power on)
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 the cable.
4. Encoder cable type (2-wire, 4-wire)
selection was wrong in parameter
setting.
Correct the setting in the fourth digit of
parameter No.PC04.
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
disconnection of all cables but the
control circuit power supply cable.
Change the servo amplifier.
19 Memory error 3
(Flash ROM)
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 cable faulty
(Wire breakage or shorted)
Repair or change the cable.
3. Encoder fault Change the servo motor.
24 Main circuit error Ground fault
occurred at the servo
motor power (U,V
and W phases) of
the servo amplifier.
1. Power input wires and servo motor
power wires are in contact.
Connect correctly.
2. Sheathes of servo motor power
cables deteriorated, resulting in
ground fault.
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.
25 Absolute
position erase
Absolute position
data in error
1. Voltage drop in encoder
(Battery disconnected.)
After leaving the alarm occurring for a few
minutes, switch power off, then on again.
Always make home position setting again.
2. Battery voltage low Change the battery.
Always make home position setting again.
3. Battery cable or battery is faulty.
Power was switched
on for the first time in
the absolute position
detection system.
4. Home position not set. After leaving the alarm occurring for a few
minutes, switch power off, then on again.
Always make home position setting again.
8 - 4
8. TROUBLESHOOTING
Display Name Definition Cause Action
30 Regenerative
error
Permissible
regenerative power
of the built-in
regenerative resistor
or regenerative
option is exceeded.
1. Wrong setting of parameter No.
PA02
Set correctly.
2. Built-in regenerative resistor or
regenerative option is not
connected.
Connect correctly.
3. High-duty operation or continuous
regenerative operation caused the
permissible regenerative power of
the regenerative option to be
exceeded.
Checking method
Call the status display and check
the regenerative load ratio.
1. Reduce the frequency of positioning.
2. Use the regenerative option of larger
capacity.
3. Reduce the load.
4. Power supply voltage is abnormal.
MR-J3-
B:260VAC or more
MR-J3-
B1:More than 135VAC
MR-J3-
B4: 535VAC or more
Check the power supply.
5. Built-in regenerative resistor or
regenerative option faulty.
Change the servo amplifier or regenerative
option.
Regenerative
transistor fault
6. Regenerative transistor faulty.
Checking method
1) The regenerative option has
overheated abnormally.
2) The alarm occurs even after
removal of the built-in
regenerative resistor or
regenerative option.
Change the servo amplifier.
31 Overspeed Speed has exceeded
the instantaneous
permissible speed.
1. Small acceleration/deceleration time
constant caused overshoot to be
large.
Increase acceleration/deceleration time
constant.
2. Servo system is instable to cause
overshoot.
1. Re-set servo gain to proper value.
2. If servo gain cannot be set to proper
value.
1) Reduce load inertia moment ratio; or
2) Reexamine acceleration/
deceleration time constant.
3. Encoder faulty. Change the servo motor.
32 Overcurrent
Current that flew is
higher than the
permissible current of
the servo amplifier.
(If the alarm (32)
occurs again when
turning ON the servo
after resetting the
alarm by turning
OFF/ON the power
when the alarm (32)
first occurred, the
transistor (IPM
IGBT) of the servo
amplifier may be at
fault. In the case, do
not repeat to turn
OFF/ON the power.
Check the transistor
with the checking
method of “Cause
2”.)
1. Short occurred in servo motor power
(U, V, W).
Correct the wiring.
2. Transistor (IPM IGBT) of the servo
amplifier faulty.
Checking method
Alarm (32) occurs if power is
switched on after U,V and W are
disconnected.
Change the servo amplifier.
3. Ground fault occurred in servo
motor power (U, V, W).
Correct the wiring.
4. External noise caused the
overcurrent detection circuit to
misoperate.
Take noise suppression measures.
8 - 5
8. TROUBLESHOOTING
Display Name Definition Cause Action
33 Overvoltage The following shows
the input value of
converter bus
voltage.
MR-J3-
B(1):
400VDC or more
MR-J3-
B4:
800VDC or more
1. Regenerative option is not used. Use the regenerative option.
2. Though the regenerative option is
used, the parameter No.PA02
setting is " 00 (not used)".
Set correctly.
3. Lead of built-in regenerative resistor
or regenerative option is open or
disconnected.
1. Change the lead.
2. Connect correctly.
4. Regenerative transistor faulty. Change the servo amplifier.
5. Wire breakage of built-in
regenerative resistor or regenerative
option
1. For wire breakage of built-in regenerative
resistor, change the servo amplifier.
2. For wire breakage of regenerative option,
change the regenerative option.
6. Capacity of built-in regenerative
resistor or regenerative option is
insufficient.
Add regenerative option or increase
capacity.
7. Power supply voltage high. Check the power supply.
8. Ground fault occurred in servo
motor power (U, V, W).
Correct the wiring.
9. The jumper across BUE-SD of the
FR-BU2 brake unit is removed.
Fit the jumper across BUE-SD.
34 Receive error 1 SSCNET
communication error
(Continuously
communication error
with about 3.5ms
interval.)
1. The SSCNET
cable is
disconnected.
Connect it after turning off the control circuit
power supply for servo amplifier.
2. The surface at the end of SSCNET
cable got dirty.
Wipe dirt at the surface away. (Refer to
section 3.9)
3. The SSCNET cable is broken or
severed.
Change the cable.
4. Noise entered the servo amplifier. Take noise suppression measures.
5. Optical characteristic of SSCNET
cable deteriorated because vinyl
tape and/or wire sheath, which
contains migrating plasticizer,
adhered to the cable.
Remove the vinyl tape and/or wire sheath,
which contains migrating plasticizer, and
exchange the cable.
35 Command
frequency error
Input pulse frequency
of command pulse is
too high.
1. Command given is greater than the
maximum speed of the servo motor.
Check operation program.
2. Servo system controller failure. Change the servo system controller.
3. Noise entered the servo amplifier. Take noise of I/O signal suppression
measures.
4. Noise entered the controller. Take noise from the controller suppression
measures.
36 Receive error 2 SSCNET
communication error
(Intermittently
communication error
with about 70ms
interval.)
1. The SSCNET
cable is
disconnected.
Connect it after turning off the control circuit
power supply for servo amplifier.
2. The surface at the end of SSCNET
cable got dirty.
Wipe dirt away from the surface. (Refer to
section 3.9)
3. The SSCNET cable is broken or
severed.
Change the cable.
4. Noise entered the servo amplifier. Take noise suppression measures.
5. Optical characteristic of SSCNET
cable deteriorated because vinyl
tape and/or wire sheath, which
contains migrating plasticizer,
adhered to the cable.
Remove the vinyl tape and/or wire sheath,
which contains migrating plasticizer, and
exchange the cable.