[6A_Mc Drive Circuit Error]; [6B_Inrush Current Suppression Circuit Error]; [6C_Main Circuit Error]; [6E_Board Error] - Mitsubishi Electric -MR-CV User Manual

[6A_MC drive circuit error]

• With an error in the magnetic contactor drive circuit, the main circuit power supply is turned on even though the magnetic
contactor output is turned off.
Cause
1.
The setting value of the magnetic contactor drive
output of the rotary switch for converter setting
(SW1) is inconsistent with the wiring configuration.
2.
The magnetic contactor has malfunctioned.
3.
The converter unit has malfunctioned.

[6B_Inrush current suppression circuit error]

• The inrush current suppression circuit error was detected.
Cause
1.
The inrush current suppression circuit of the
converter unit has malfunctioned.

[6C_Main circuit error]

• An abnormality was detected while charging the main circuit capacitor.
Cause
1.
The drive units and servo amplifiers connected to
the converter unit do not meet the combination
selection conditions.
2.
The converter unit has malfunctioned.
3.
The servo amplifier has malfunctioned.

[6E_Board error]

• There is a problem with an internal part of the converter unit.
Cause
1.
The converter unit has malfunctioned.
2.
There is a problem with the surrounding
environment.
Check/action method
Check the SW1 setting and wiring configuration.
For details on the SW1 setting and wiring configuration, refer to the following.
Page 28 Converter unit switch settings and operation panel
Replace the magnetic contactor, then check the repeatability.
Replace the converter unit, then check the repeatability.
Check/action method
Replace the converter unit, then check the repeatability.
Check/action method
Check that the drive units and servo amplifiers connected to the converter unit meet
the combination selection conditions. For the combination selection conditions, refer
to the drive unit/servo amplifier user's manual and instruction manual.
Replace the converter unit, then check the repeatability.
Replace the servo amplifier, then check the repeatability.
Check/action method
Check the repeatability when only the control circuit power supply is connected.
Check the power supply for noise. If there is noise, take countermeasures to reduce
the noise.
For noise reduction techniques, refer to the following.
Page 96 Noise reduction techniques
8 CONVERTER UNIT TROUBLESHOOTING
8.3 Handling methods for alarms/warnings
8
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