Alarm Occurrence Timing Chart - Mitsubishi Electric MR-J4W2-0303B6 Instruction Manual

18. MR-J4W2-0303B6 SERVO AMPLIFIER

18.3.8 Alarm occurrence timing chart

CAUTION
To deactivate the alarm, cycle the control circuit power or give the error reset or CPU reset command from
the servo system controller. However, the alarm cannot be deactivated unless its cause is removed.
(1) When you use the forced stop deceleration function
(a) When the forced stop deceleration function is enabled
When an all-axis stop alarm occurs, all axes will be the operation status below. When a
corresponding axis stop alarm occurs, only the axis will be the operation status below. You can
normally operate the axis that any alarm is not occurring.
Servo motor
speed
Base circuit
(Energy supply to
the servo motor)
Servo amplifier
display
MBR
(Electromagnetic
brake interlock)
CALM
(AND malfunction)
Note 1. The model speed command is a speed command generated in the servo amplifier for forced stop
deceleration of the servo motor.
2. If the servo motor speed is 5 r/min or higher at this point, the electric dynamic brake will operate continuously
for the time period set by [Pr. PF12].
When an alarm has occurred, remove its cause, make sure that the operation
signal is not being input, ensure safety, and reset the alarm before restarting
operation.
When alarms are occurring in both axes of A and B, shut off the main circuit
power supply. Not doing so may cause a fire when a regenerative transistor
malfunctions or the like may overheat the built-in regenerative resistor.
POINT
In the torque control mode, the forced stop deceleration function is not available.
POINT
To enable the function, set "2 _ _ _ (initial value)" in [Pr. PA04].
0 r/min
ON
OFF
No alarm
ON
OFF
ON (Not occurring)
OFF (Occurring)
Alarm occurrence
Command is not received.
Alarm No.
18 - 34
Model speed command 0
and equal to or less than
zero speed (Note 1)
Dynamic brake
operation time
(Note 2)