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6. Troubleshooting
6 - 33
Alarm No.
6B
Rush relay melted
The rush resistance short-circuit relay does not turn OFF.
Investigation details Investigation results Remedies
CV CR
An alarm has occurred. Remove the cause of the alarm on
the drive side, and then carry out the
investigation details 2.
1 Check whether any alarm has
occurred on the drive unit side.
An alarm has not occurred. Investigate item 2.
{
The alarm occurs each time READY
is turned ON.
Replace the unit. 2 Check the repeatability.
The alarm occurs occasionally. Investigate item 3.
{
No abnormality is found in particular. Replace the unit. 3 Check if there is any abnormality in
the unit's ambient environment.
(Ex. Noise, grounding)
The grounding is incomplete.
An alarm will occur easily if another
device operates.
Take remedies according to the
causes of the abnormality.
Ex. Incomplete grounding:
Additionally ground.
Noise: Noise measures for
other devices.
{
Alarm No.
6C
Main circuit error
An abnormality was detected in the main circuit capacitor's charging operation.
Investigation details Investigation results Remedies
CV CR
The CHARGE lamp remains ON for
some time.
Replace the power supply unit.
The lamp turns ON instantly, but
when the alarm occurs and the
contactor turns OFF, the lamp turns
OFF immediately.
Investigate item 2.
1 Check the CHARGE lamp state when
the alarm occurs.
The lamp never turns ON. Investigate item 2.
Then replace the unit.
{ {
1) The power supply unit side is
abnormal.
Replace the power supply unit.
2) The drive unit side is abnormal. Disconnect the PN wiring, and then
check the drive unit side.
2 Disconnect the power supply unit's
PN terminal block wiring, and
measure the resistance value at 1)
and 2) shown below.
1) and 2) are both normal.
Replace the power supply unit.
{ {
Alarm No.
6D
Parameter error
The power supply unit's capacity is not appropriate for the regenerative resistor type set with the
parameters.
Investigation details Investigation results Remedies
CV CR
SV036 and SP041 setting 1 Check the parameters (regenerative
resistor type) of the drive unit to
which the power supply unit's control
wire (CN4) is connected.
Servo: SV036, Spindle: SP041
{
Drive unit
Power supply
unit
P
N
2)
1)
Polarity
Tester
measure-
ment point
+-
Normal Abnormal
PN
Several 100Ω Short-circuit/∞Ω
1)
NP
∞Ω Several 100Ω
PN
Several 100Ω Short-circuit/∞Ω
2)
NP
∞Ω Several 100Ω
F EDCBA987654 3 2 1 0
amp rtyp ptyp
rtyp Regenerative resistor type CR-10 CR-15 CR-22 CR-37 CR-55 CR-75 CR-90
0 For MDS-C1-CV × × × × × × ×
1 GZG200W260HMJ { { { { { { {
2 GZG300W130HMJ×2 { { { { { { {
3 MR-RB30 × × × { { { {
4 MR-RB50 × × × { { { {
5 GZG200W200HMJ×3 × × × × × { {
6 GZG300W200HMJ×3 × × × × × { {
7 R-UNIT-1 { { { { { { {
8 R-UNIT-2 × × × { { { {
9 R-UNIT-3 × × × { { { {
A~F No setting × × × × × × ×
ptyp setting 81 82 83 84 86 88 89