
B–63463EN/01
4. POWER SUPPLY UNIT CONNECTION
25
Apply the following power–off sequence. Alternatively, turn off the
power to all the units simultaneously.
1 Power to the Digital Servo Adapter <24 VDC>
2 Power to the separate detector interface unit <24 VDC>
Power to the servo amplifier <200 VAC>
3 Power to the entire machine <200 VAC>
“Simultaneously,” as used here, refers to the following: The units
described in items 2 and 3 may be turned off within 500 ms before the
Digital Servo Adapter described in item 1 are turned off.
OFF
OFF
ON
ON
Power to the units described
in item 1
<24 VDC or 200 VAC>
Power to the units described
in items 2 and 3
<24 VDC, 200 VAC>
500 ms or less
The Digital Servo Adapter has a circuit for protection against momentary
power failures.
When a momentary power failure is detected, the Digital Servo Adapter
turns off the output signals to the servo system and machine. Upon
recovery from the momentary power failure, the system is automatically
reset to turn on the output signals to the servo system and machine. Then
the Digital Servo Adapter waits for automatic operation to be restarted.
(The operator restarts operation after checking the status.)
4.5
POWER–OFF
SEQUENCE
4.6
MOMENTARY
POWER FAILURE