Filter
Top Products
8 - 5
8. TROUBLESHOOTING
Display Name Definition Cause Action
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.
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
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.
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.
34 Receive error 1 SSCNET
communication error
(Continuously
communication error
with about 3.5ms
interval.)
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.
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.
35 Command
frequency error
Input pulse frequency
of command pulse is
too high.
4. Noise entered the controller. Take noise from the controller suppression
measures.
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.
36 Receive error 2 SSCNET
communication error
(Intermittently
communication error
with about 70ms
interval.)
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.