When You Do Not Use The Forced Stop Deceleration Function - Mitsubishi Electric Melservo-J4 MR-J4-DU*B4-RJ100 Series Instruction Manual

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.
Axis in which SSCNET III/H
communication shut-off
has occurred
Axis in which SSCNET III/H
communication shut-off
has not occurred

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
3 SIGNALS AND WIRING
30
3.2 Alarm occurrence timing chart
Occurrence of SSCNET III/H communication shut-off
Servo motor speed
0 r/min
Base circuit
ON
(Energy supply to
OFF
the servo motor)
Drive unit display
ON (no alarm)
ALM (Malfunction)
OFF (alarm)
Servo motor speed
0 r/min
Base circuit
ON
(Energy supply to
OFF
the servo motor)
Drive unit display
ON (no alarm)
ALM (Malfunction)
OFF (alarm)
Braking by the dynamic brake
No alarm AA
Braking by the dynamic brake
No alarm Ab