Mitsubishi MELDAS MDS-C1

6. Troubleshooting
6 - 8
Power supply alarm
No.
LED
display
Alarm name CV CR Alarm details Reset
60
Instantaneous power failure
{
A drop in the 24VDC power was detected. PR
61
Power module overcurrent
{
The power module's overcurrent protection function activated. PR
62
Frequency error
{
The input power frequency exceeded the specified range. PR
63
Auxiliary regeneration error
{
The auxiliary regenerative transistor is still ON. PR
65
Rush relay error
{
The rush resistance short-circuit relay does not turn ON. PR
67
Phase failure
{
There is a phase failure in the input power. PR
68
Watch dog
{ {
The system is not operating normally. AR
69
Ground fault
{ {
The motor power cable is contacting FG (ground). PR
6A
External contactor melting
{
The external contactor's contact has melted. PR
6B
Rush relay melted
{
The rush resistance short-circuit relay does not turn OFF. PR
6C
Main circuit error
{ {
An abnormality was detected in the main circuit capacitor's charging
operation.
PR
6D
Parameter error
{
The power supply unit's capacity is not appropriate for the regenerative
resistor type set with the parameters.
PR
6E
Memory error
{ {
An error was detected in the internal memory. AR
6F
Power supply error
{ {
The power supply is not connected, or an error was detected in the
power supply's A/D converter.
This is detected simultaneously if another power supply alarm occurs.
AR
71
Instantaneous power failure/
external emergency stop
{
An instantaneous power failure occurred. NR
73
Over-regeneration
{ {
The over-regeneration detection level exceeded 100%. The
regenerative resistor is in the overload state.
PR
74
Regenerative resistor
overheat
{
The temperature protection function in the regenerative resistor
activated.
PR
75
Overvoltage
{ {
The main circuit PN bus voltage exceeded the tolerable value. NR
76
External emergency stop
setting error
{
The rotary switch setting for the external emergency stop does not
match the parameter setting.
AR
77
Power module overheat
{ {
The power module's temperature protection function activated. AR
(Note 1) If a power supply alarm (60 to 77) occurs, all servos will stop with the dynamic brakes.
(Note 2) CV indicates an alarm that occurs with the MDS-C1-CV unit, and CR indicates an alarm that occurs with the MDS-A-CR
unit.
(Note 3) "b", "C" and "d" displayed on the power supply unit's LED as a solid light (not flickering) do not indicate an alarm.