Mitsubishi C70 User Manual

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Appendix 7. Explanation of Alarms
Appendix 7.3 Servo/Spindle Alarms (S)
006E Pw sply: Memory error
Details
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.
- LED display: E
006F Power supply error
Details
No power supply is connected to the drive unit, or a communication error was detected.
- LED display: F
0070 Pw sply: External EMG stop err
Details
A mismatch of the external emergency stop input and NC emergency stop input continued
for 30 seconds.
- LED display: G
0071 Pw sply: Instant pwr interrupt
Details
The power was momentarily interrupted.
- LED display: H
0072 Pw sply: Fan stop
Details
A cooling fan built in the power supply unit stopped, and overheat occurred in the power
module.
- LED display: I
0073 Pw sply: Over regeneration
Details
Over-regeneration detection level became over 100%. The regenerative resistor is
overloaded. This alarm cannot be reset for 15 min from the occurrence to protect the
regeneration resistor. Leave the drive system energized for more than 15 min, then turn the
power ON to reset the alarm.
- LED display: J
0075 Pw sply: Overvoltage
Details
L+ and L- bus voltage in main circuit exceeded the allowable value. As the voltage between
L+ and L- is 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.
- LED display: L
0076 Pw sply: Ext EMG stop set err
Details
The rotary switch setting of external emergency stop is not correct, or a wrong external
emergency stop signal is input.
- LED display: M
0077 Pw sply: Power module overheat
Details
Thermal protection function in the power module has started its operation.
- LED display: n

Mitsubishi C70 Specifications

General

Brand	Mitsubishi
Model	C70
Category	Control Unit
Language	English