- 6 -
Chaper 2 INSTALLING THE INTERFACE CARD
2.1 Removing the Front Cover
• Incorrect handling in installation/removal jobs could result in a broken produce.
• Before installing or removing the interface card, shut down the input power to the inverter and make sure that
the charging lamp is turned OFF. Even if all of the input power to the main circuit and control circuit and the
auxiliary power are shut down, however, power is still applied to the inverter control terminals 30A, 30B, 30C,
Y5A and Y5B when the external control circuit is supplied with power from a separate power supply. Shut down
the power of the external equipment for prevention of electric shock. Shut down the power of the external
equipment for prevention of electric shock.
Remove the front cover from the inverter as shown below. The removal procedure differs depending on the inverter
type (capacity).
FRN22VG1S-2J/4J (22 kW) or lower types
FRN30VG1S-2J/4J (30 kW) or upper types
As shown in Figure 2.1-1, loosen the cover mounting
screw on section "a" and pull out the upper end of the
front cover towards you.
(1) As shown in Figure 2.1-2, remove the cover
mounting screws (the number of screws differs
depending on the inverter capacity) on section "b"
and remove the front cover.
(2) Open the keypad enclosure.
Figure 2.1-1 Removing the Front Cover
FRN22VG1S-2J/4J (22 kW) or lower types
Figure 2.1-2 Removing the Front Cover
FRN30VG1S-2J/4J (30 kW) or upper types
a
Keypad
enclosure
Control printed
circuit board
(Control PCB)
b
