WARNING
DISCHARGE TIME
The frequency converter contains DC-link capacitors, which
can remain charged even when the frequency converter is
not powered. High voltage can be present even when the
warning LED indicator lights are off. Failure to wait the
specified time after power has been removed before
performing service or repair work can result in death or
serious injury.
•
Stop motor.
•
Disconnect AC mains and remote DC-link power
supplies, including battery back-ups, UPS, and DC-
link connections to other frequency converters.
•
Disconnect or lock PM motor.
•
Wait for the capacitors to discharge fully. The
minimum duration of waiting time is specified in
Table 1.2
.
•
Before performing any service or repair work, use
an appropriate voltage measuring device to make
sure that the capacitors are fully discharged.
Voltage
[V]
Frequency converter
model
Minimum waiting
time
(minutes)
3x400
N110–N315
20
N90K–N250
20
3x690
N75K–N400
20
N55K–N315
20
Table 1.2 Discharge Time
1.4 Installation
1.4.1 Installing the Top Plate
1.
Along the back side of the top vent opening, remove
the 4 screws (T25).
2.
Place the top plate over the top vent opening.
See
Illustration 1.2
.
3.
Secure the top plate with the 6 screws without
captive washers provided in the bag. Torque to 2.3
Nm (20 in/lbs).
4.
If lifting eyebolts are needed for the application,
remove the plated eyebolts that came with the unit
and replace with the stainless steel eyebolts provided
in the bag.
NOTICE
UL NEMA 3R RATING
Eyebolts are not required to meet UL NEMA 3R rating.
1
Top plate
2
Eye bolt
3
Screw without captive washer
Illustration 1.2 Installing NEMA 3R Top Plate
Installation Instructions
NEMA-3R Cover Kit for D1h–D2h
VLT
®
FC Series FC 102, FC 103, FC 202, and FC 302
2
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MI70I102
