Mitsubishi Electric Melservo-J4 MR-J4-DU*B4-RJ100 Series, Instruction Manual

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30
3 SIGNALS AND WIRING
3.2 Alarm occurrence timing chart
When SSCNET III/H communication is shut off
When an SSCNET III/H communication shut-off occurs in a servo amplifier, the servo amplifier and
subsequent servo amplifiers show "AA" on the display.
When you do not use the forced stop deceleration function
Set [Pr. PA04] to "0 _ _ _". The operation status of the servo motor during an alarm is the same as that of when the forced stop
deceleration function is used.

Page 27 When you use the forced stop deceleration function
Axis in which SSCNET III/H
communication shut-off
has not occurred
Occurrence of SSCNET III/H communication shut-off
AA
ON
OFF
0 r/min
Axis in which SSCNET III/H
communication shut-off
has occurred
ON
OFF
0 r/min
Ab
Base circuit
(Energy supply to
the servo motor)
ON (no alarm)
OFF (alarm)
ON (no alarm)
OFF (alarm)
Drive unit display
Servo motor speed
ALM (Malfunction)
Base circuit
(Energy supply to
the servo motor)
Drive unit display
Servo motor speed
ALM (Malfunction)
Braking by the dynamic brake
No alarm
Braking by the dynamic brake
No alarm