Danfoss NEMA-3R Manual de instrucciones de instalación - Página 2

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Installation Instructions
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
Frequency converter
[V]
model
N110–N315
3x400
N90K–N250
N75K–N400
3x690
N55K–N315
Table 1.2 Discharge Time
2
NEMA-3R Cover Kit for D1h–D2h
®
VLT
FC Series FC 102, FC 103, FC 202, and FC 302
1.4 Installation
1.4.1 Installing the Top Plate
1.
2.
3.
4.
NOTICE
UL NEMA 3R RATING
Eyebolts are not required to meet UL NEMA 3R rating.
Minimum waiting
time
(minutes)
20
20
20
20
1
2
3
Illustration 1.2 Installing NEMA 3R Top Plate
Danfoss A/S © 06/2015 All rights reserved.
Along the back side of the top vent opening, remove
the 4 screws (T25).
Place the top plate over the top vent opening.
See Illustration 1.2.
Secure the top plate with the 6 screws without
captive washers provided in the bag. Torque to 2.3
Nm (20 in/lbs).
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.
Top plate
Eye bolt
Screw without captive washer
MI70I102