Mitsubishi Electric MELSEC Q Series User Manual page 8

Do not mistake the direction of the surge absorbing diode installed on the DC relay for the control
signal output of brake signals, etc. Incorrect installation may lead to signals not being output
when trouble occurs or the protective functions not functioning.
Do not connect or disconnect the connection cables between each unit, the encoder cable or
PLC expansion cable while the power is ON.
Securely tighten the cable connector fixing screws and fixing mechanisms. Insufficient fixing may
lead to the cables combing off during operation.
Do not bundle the power line or cables.
Use applicable solderless terminals and tighten them with the specified torque.
If any solderless spade terminal is used, it may be disconnected when the terminal screw comes
loose, resulting in failure.
(5) Trial operation and adjustment
Confirm and adjust the program and each parameter before operation. Unpredictable
movements may occur depending on the machine.
Extreme adjustments and changes may lead to unstable operation, so never make them.
When using the absolute position system function, on starting up, and when the module or
absolute value motor has been replaced, always perform a home position return.
Before starting test operation, set the parameter speed limit value to the slowest value, and make
sure that operation can be stopped immediately if a hazardous state occurs.
Servo amplifier
24VDC
DOCOM
Control output
signal
DICOM
For the sink output interface
CAUTION
Servo amplifier
Control output
RA
signal
For the source output interface
CAUTION
A - 7
24VDC
DOCOM
RA
DICOM