Parameter Setting; Actual Operation; Trouble At Start-Up - Mitsubishi MR-J4-10A Instruction Manual

4. STARTUP

4.3.4 Parameter setting

When using this servo in the speed control mode, change [Pr. PA01] setting to select the speed control
mode. In the speed control mode, the servo can be used by merely changing the basic setting parameters
([Pr. PA _ _ ]) and extension setting parameters ([Pr. PC _ _ ]) mainly.
As necessary, set other parameters.

4.3.5 Actual operation

Start actual operation after confirmation of normal operation by test operation and completion of the
corresponding parameter settings.

4.3.6 Trouble at start-up

CAUTION
The following faults may occur at start-up. If any of such faults occurs, take the corresponding action.
No. Start-up sequence
1 Power on
Alarm occurs.
POINT
The following encoder cables are of four-wire type. When using any of these
encoder cables, set [Pr. PC22] to "1 _ _ _" to select the four-wire type. Incorrect
setting will result in [AL. 16 Encoder initial communication error 1].
MR-EKCBL30M-L
MR-EKCBL30M-H
MR-EKCBL40M-H
MR-EKCBL50M-H
Never adjust or change the parameter values extremely as it will make operation
unstable.
POINT
Using the optional MR Configurator2, you can refer to reason for rotation failure,
etc.
Fault
LED is not lit. Not improved even if CN1, CN2,
and CN3 connectors are
LED flickers.
disconnected.
Improved when CN1 connector is
disconnected.
Improved when CN2 connector is
disconnected.
Improved when CN3 connector is
disconnected.
Refer to chapter 8 and remove cause.
Investigation
1. Power supply voltage fault
2. The servo amplifier is
malfunctioning.
Power supply of CN1 cabling is
shorted.
1. Power supply of encoder
cabling is shorted.
2. Encoder is malfunctioning.
Power supply of CN3 cabling is
shorted.
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Possible cause Reference
Chapter 8
(Note)