Filter
Top Products
6. Troubleshooting
6 - 7
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, and all spindles will be stop with the
coast to a stop.
(Note 2) "b", "C" and "d" displayed on the power supply unit's LED as a solid light (not flickering) do not indicate an alarm.