170
3 BASIC FUNCTION
3.16 Alarm function
■When network communication shut-off or communication time-out has occurred
The dynamic brake may operate depending on the communication shut-off status.
Communication shut-off or communication time-out may not be detected, depending on the network. For details, refer to the
User's Manual (Communication Function).
*1 The model speed command is a speed command generated in the servo amplifier for forced stop deceleration of the servo motor.
When the forced stop deceleration function is not used
This is the case when [Pr. PA04.3 Forced stop deceleration function selection] is set to "0" (Forced stop
deceleration function disabled).
The operation status during an alarm occurrence or network communication shut-off is the same as in the stop method with
dynamic brake shown in this section.
Page 164 Stopping with dynamic brake
Page 167 Stopping with dynamic brake
ON
OFF
ON
OFF
ON
OFF
0 r/min
Network communication shut-off
Model speed command is 0,
and the speed is equal to or
less than zero speed
Servo motor speed
Base circuit
(Energy supply to
the servo motor)
Servo amplifier
display
No alarm Communication error alarm No.
(No alarm)
(Alarm)
*1
MBR
(Electromagnetic
brake interlock)
ALM
(Malfunction)
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