Troubleshooting At Start Up - Mitsubishi Electric MELDAS MDS-B Series Instruction Manual

11-2 Troubleshooting at start up

If the CNC system does not start up correctly and a system error occurs when the CNC power is
turned ON, the servo driver may not have been started up correctly.
Confirm the LED display on the driver, and take measures according to this section.
LED
Symptom
display
AA Initial communication
with the CNC was not
completed correctly.
Ab Initial communication
with the CNC was not
carried out.
Chapter 11 Troubleshooting
Cause of occurrence
The amplifier axis No. setting
is incorrect.
The CNC setting is incorrect. Is the No. of CNC controlled axes
Communication with CNC is
incorrect.
The axis is not used, the
setting is for use inhibiting.
Communication with CNC is
incorrect.
11–3
Investigation method
Is there any other driver that has the
same axis No. set?
correct?
Is the connector (CN1A, CN1B)
disconnected?
Is the cable broken?
Check the conductivity with a tester.
Is the axis setting rotary switch set to
"7" to "F"?
Is the connector (CN1A, CN1B)
disconnected?
Is the cable broken?
Check the conductivity with a tester
Remedy
Set correctly.
Set correctly.
Connect correctly.
Replace the cable.
Set correctly.
Connect correctly.
Replace the cable.