
B–63465EN/01
2. HARDWARE
35
WARNING
When opening the cabinet and replacing a fan unit, be
careful not to touch the high–voltage circuits (marked and
fitted with an insulating cover).
Touching the uncovered high–voltage circuits presents an
extremely dangerous electric shock hazard.
The Digital Servo Adapter is equipped with two cooling fans. If even one
of the two fans stops, a FAN warning message appears on the
setting/display unit such as the DPL/MDI. This message also appears on
the host controller display. When the Digital Servo Adapter is used
continuously after the alarm is generated, the life of the Digital Servo
Adapter may be shorten. Replace the fans as soon as possible. Replace
the two fans at a time.
When a fan stops, and if there is a possible danger that the Digital Servo
Adapter will crash because of overheat, system alarm 978 (fan overheat
alarm) is generated, causing the Digital Servo Adapter to stop operating.
In this case, “F.” blinks on the 7–segment LED. If a fan stops when system
alarm 978 is issued, the Digital Servo Adapter does not operate unless the
fans are replaced.
(1)Push up the latch from the upper section of the unit to dismount it.
Latched state Unlatched state
Push up the latch.
CAUTION
Do not lift up the entire latch. Just unlatch. If you push up
the latch forcibly, it may be broken.
2.5
METHODS FOR
DISMOUNTING AND
MOUNTING FAN
UNITS AND FANS
2.5.1
Cooling Fans
2.5.2
Method for
Dismounting the Fan
Unit