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3. SIGNALS AND WIRING
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(d) When the power supply of a servo amplifier in which an alarm occurred is shut off, subsequent servo
amplifiers will decelerate to a stop, and the controller will be in a non-connection state. "AA" will be
shown on the display of the servo amplifier.
(4) Timing chart
(a) When the hot line forced stop function is enabled
1) If an alarm that leads to a deceleration to a stop occurs in the second axis servo amplifier, and
then the power supply is off
To clear [AL. E7.1 Controller forced stop warning], give the error reset command from the
controller.
No alarm
0 r/min
0 r/min
0 r/min
Input power
supply
Servo amplifier
display
T
he first axis
servo amplifie
r
Servo motor
speed
3.5 ms + communication cycle
Hot line alarm signal (from
t
he servo amplifier in which
an alarm occurred)
Hot line forced stop signal
(from the controller)
Power on
duration
Deceleration
to a stop
Deceleration to a stop
Deceleration to a stop
Power off of the servo amplifier
in which an alarm occurred
No alarm Blank
AA
Alarm No.
No alarm E7.1
E7.1
Alarm occurrence
Signal
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Input power
supply
Servo amplifier
display
T
he second axis
servo amplifie
r
(the servo
amplifier in
w
hich an alarm
occurred)
Servo motor
speed
Input power
supply
Servo amplifier
display
T
he third axis
servo amplifie
r
and late
r
Servo motor
speed
No signal