Led Display When Alarm Or Warning Occurs; Protective Functions List Of Units; List Of Alarms - Mitsubishi Electric MDS-EX-CVP Series Technical Specification And Instruction Manual

MDS-EX-CVP Series Specifications and Instruction Manual
10. Troubleshooting

10.1.1 LED Display When Alarm or Warning Occurs

For the power supply unit, the alarm/warning No. is alternately displayed by one digit. The display flickers when an alarm
or a warning occurs.

10.2 Protective Functions List of Units

10.2.1 List of Alarms

When an alarm occurs, the servo drive unit will make the motor stop by the deceleration control or dynamic brake. The
spindle drive unit will coast to a stop or will decelerate to a stop. At the same time, the alarm No. will appear on the NC
monitor screen and with the LEDs on the front of each drive unit. Check the alarm No., and remove the cause of the
alarm by following this list.
List of alarms
No.
Power supply: Power module overcurrent
61
Power supply: Frequency error
62
Power supply: Overload
64
Power supply: Process error
66
Power supply: Phase interruption
67
Power supply: Watchdog
68
Power supply: Grounding
69
Power supply: External contactor welding
6A
Power supply: Rush circuit error
6B
Power supply: Main circuit error
6C
Parameter setting error
6D
Power supply: H/W error
A/D error
6E
Unit ID error
Power supply error
6F
Power supply: External emergency stop error
70
Power supply: Instantaneous power
71
interruption
Power supply: Fan stop
72
Power supply: Option unit error
74
Power supply: Overvoltage
75
Power supply: Function setting error
76
Power supply: Function selection error
Power supply: Power module overheat
77
AR: Drive unit power ON/OFF, PR: NC power ON/OFF, NR: NC reset (NR*: The cause of the warning is distinguished),
*: Reset once the cause of the warning is removed.
IB-1501587-A
Alarm 61 (flicker)
LED display
during power supply alarm
Name
Overcurrent protection function in the power module has started
its operation.
The input power supply frequency increased above the
specification range.
Or, incorrect wiring of the power supply wire was detected.
Excessive load current was detected.
Or, overheating of the boost reactor was detected.
An error occurred in the process cycle.
An open-phase condition was detected in input power supply
circuit.
The system does not operate correctly. LED display is fixed as
"8".
The motor power cable is in contact with FG (Frame Ground).
A contact of the external contactor is welding.
An error was detected in the rush circuit.
An error was detected in charging operation of the main circuit
capacitor.
An error was detected in the parameter sent from the drive unit.
An error was detected in the internal memory.
An error was detected in the A/D converter.
An error was detected in the unit identification.
No power supply is connected to the drive unit, or a
communication error was detected.
A mismatch of the external emergency stop input and NC
emergency stop input continued for 30 seconds.
The power was momentarily interrupted.
A cooling fan built in the power supply unit stopped, and
overheat occurred in the power module.
An alarm was detected in the power backup unit (power supply
option unit).
L+ and L- bus voltage in main circuit or the input voltage
exceeded the allowable value. As the voltage between L+ and L-
may be high immediately after this alarm, another alarm may
occur if this alarm is reset in a short time. Wait more than 5 min
before resetting so that the voltage drops.
The rotary switch setting of external emergency stop is not
correct, or a wrong external emergency stop signal is input.
"Setting prohibited" for the rotary switch 1 and 2 is selected
Thermal protection function in the power module has started its
operation.
38
Warning EA (flicker)
LED display
during power supply alarm
Details
Reset
method
PR
PR
NR
PR
PR
AR
PR
PR
PR
PR
PR
AR
AR
PR
NR
PR
NR
NR
AR
PR