1.1 Description
The back-channel cooling (in-back/out-back) kit is designed for
the D5h/D6h and D7h/D8h frequency converters. Instead of
airow entering the bottom of the unit and exiting the top,
the kit directs air in from and out of the back of the unit.
1.2 Kit Part Numbers
Part number Kit description
176F3530 In-back/out-back cooling kit for the D5h/D6h
176F3531 In-back/out-back cooling kit for the D7h/D8h
Table 1.1 Part Numbers for D5h/D6h and D7h/D8h In-back/
Out-back Cooling Kits
1.3 Items Supplied
Top plate assembly
1 M5x12 screw/washer (12) D5h/D6h or (18) D7h/D8h
2Top plate (1)
3 Gasket between top plate and frequency converter (1)
Illustration 1.1 Top Plate Components
Base plate assembly
1 Bottom bracket (1)
2 Gasket between base plate and frequency converter (1)
3 Front brace (removed from base of frequency converter)
4 Base plate (1)
5 Gasket, bottom cover (1)
6 Outer hole in bottom cover gasket
7 Bottom cover (1)
–M5 nut (8)
–M5x16 Torx screw (2)
– M5x12 screw with washer, (5) D5h/D6h or (7) D7h/D8h
Illustration 1.2 Base Plate Components
Enclosure gaskets
1 Gasket, slot (1) D5h/D6h or (2) D7h/D8h
2Gasket, strip (2)
Illustration 1.3 Gasket Set for Enclosure
Installation Instructions
In-back/Out-back Cooling Kit for D5h/D6h and
D7h/D8h Enclosures VLT® Series FC 102, FC 202,
and FC 302
Danfoss A/S © 10/2016 All rights reserved. MI70F102
D5h/D6h back panel gasket set
1 Gasket, mounting (Not supplied with kit)
2 Exhaust spacer (1)
(Used on pedestal units only)
3Label (2)
4 Intake spacer (1)
(Used on pedestal units only)
5Vent gaskets (4)
– M5x18 screw/washer (8)
– M5x16 Torx screw (4)
(Used on pedestal units only)
Illustration 1.4 Gasket Set, D5h/D6h Back Panel
D7h/D8h back panel gasket set
1 Exhaust spacer (1)
2Intake spacer (1)
3Label (2)
4Vent gaskets (4)
– M5x18 screw/washer (16)
Illustration 1.5 Gasket Set, D7h/D8h Back Panel
1.4 Safety
WARNING
DISCHARGE TIME
The frequency converter contains DC-link capacitors, which
can remain charged even when the unit is o. High voltage
can be present even when the warning indicator lights are
o.
Failure to wait 20 minutes after power has been
removed before performing service or repair work could
result in death or serious injury.
•
Stop the motor.
•
Disconnect the AC mains, permanent magnet type
motors, and remote DC-link supplies, including
battery back-ups, UPS, and DC-link connections to
other frequency converters.
•
Wait 20 minutes for the capacitors to discharge fully.
•
Measure the voltage level to verify full discharge
before performing any service or repair work.
Installation Instructions
In-back/Out-back Cooling Kit for D5h/D6h and D7h/D8h Enclosures VLT® Series FC 102, FC 202,
and FC 302
2
Danfoss A/S © 10/2016 All rights reserved. MI70F102
1.5.1 Removing the Frequency Converter from
the Enclosure
WARNING
LIFTING HAZARD
The D5h/D7h modules weigh 62 kg (135 lb), and the
D6h/D8h modules weigh 125 kg (275 lb). The options
enclosure adds more weight. Failure to take proper lifting
precautions could result in death or serious injury.
•
Ensure that a hoisting mechanism is used to lift the
frequency converter.
1. Remove the cover from the option enclosure.
2. Remove the front cover from the frequency
converter.
3. Set the entire unit on its back.
4. Remove the jumper busbars that connect the
frequency converter to the options enclosure. See
Illustration 1.6 for an example of a possible busbar
conguration.
4a Motor
4b Mains
4c Brake (if so equipped)
1 Motor busbar
2 Mains busbar
3 Brake busbar (optional)
4Ground plate
Illustration 1.6 Jumper Busbars Between the Frequency Converter
and the Enclosure
The ground plates come in 2 congurations. The smaller
ground plate is used with the D5h and D7h enclosures, and
the larger ground plate is used with the D6h and D8h
enclosures.
5. Remove the ground plate between the bottom of the
frequency converter and the top of the options
enclosure.
•
For the smaller conguration, remove three
13 mm nuts and three 8 mm nuts. See
Illustration 1.7.
•
For the larger conguration, remove two 17
mm nuts, three 8 mm nuts, and one T25
machine screw. See Illustration 1.8.
Installation Instructions
In-back/Out-back Cooling Kit for D5h/D6h and D7h/D8h Enclosures VLT® Series FC 102, FC 202,
and FC 302
MI70F102 Danfoss A/S © 10/2016 All rights reserved.
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