Danfoss 176F3530, 176F3531 Installation Instructions Manual

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
airow 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
conguration.

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 congurations. 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 conguration, remove three
13 mm nuts and three 8 mm nuts. See
Illustration 1.7.

•

For the larger conguration, 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.

3

1Nut, 13 mm

2Nut, 8 mm

3Ground plate

Illustration 1.7 Removing the Ground Plate (Smaller

Conguration)

1Nut, 13 mm

2Screw, M5x12

3Ground plate

4Nut, 8 mm

Illustration 1.8 Removing the Ground Plate (Larger Conguration)

6. Unfasten the top of the frequency converter from the
top of the options enclosure. See Illustration 1.9.

6a Unscrew the 2 M10 eyebolts.

6b Remove 4 M5x12 screws from each top

connector plate.

6c Remove the top connector plates.

1 M10 eyebolt on top of frequency converter

2 Top connector plate

3 Screw, M5x12 on connector plate

Illustration 1.9 Removing the Top Connection Plates

7. Unfasten the base of the frequency converter from
the options enclosure.

7a Make sure the unit is on its back.

7b Remove ve 8 mm nuts (D5h and D7h) or

six 8 mm nuts (D6h and D8h). See
Illustration 1.9.

7c Lift and slide the frequency converter from

the open channel of the options 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

4

Danfoss A/S © 10/2016 All rights reserved. MI70F102

1 Frequency converter

2Option enclosure

3Nut, 8 mm

Illustration 1.10 Removing the Frequency Converter Base from the

Options Enclosure

1.5.2 Assembling the Top Plate

1. Install the top plate gasket onto the top plate. Refer
to Illustration 1.1.

2. Install the 2 M10 eyebolts onto the top plate.

1.5.3 Assembling and Installing the Base Plate

See Illustration 1.2 for the following steps.

1. Remove the existing base plate from the frequency
converter. Put aside the fasteners and the front brace
(3) for later.

2. Place the new base plate (4) on a level surface, studs
facing up.

3. Install gasket (2) onto the base plate.

4. Install front brace onto the 3 front studs and secure
with 3 M5 nuts. Torque to 5.1 Nm (45 in-lb).

5. Install the bottom bracket (1) to the enclosure and
secure with 5 M5 nuts. Torque to 5.1 Nm (45 in-lb).
Refer to step 1 in Illustration 1.11.

6. Install the new base plate assembly onto the bottom
of the enclosure. Torque all fasteners in this step to

5.1 Nm (45 in-lb). Refer to step 2 in Illustration 1.11.

6a Secure the front of half of the new base

plate with the 9 M5x16 Torx screws taken
from the old base plate.

6b At the back of the base plate assembly,

secure both corners with the 2 M5x16 Torx
screws included in the kit.

7. Install the bottom gasket (5) onto the base plate
assembly. Secure it with 2 M5x12 screws placed in
the outer holes (6). Refer to step 3 in Illustration 1.11.

8. Install the bottom cover (7) onto the bottom gasket.
Refer to step 4 in Illustration 1.11. Secure with M5x12
screws, 4 (D5h/D6h) or 6 (D7h/D8h). Torque to 5.1
Nm (45 in-lb).

9. Install 1 M5x12 screw into the drain plug, which is
found in the center of the bottom cover. Torque to

5.1 Nm (45 in-lb).

1.5.4 Reinstalling the Frequency Converter
into the Enclosure

NOTICE

PREVENTING GASKET DAMAGE

Use a hoist to lift the D-frame unit into the enclosure.
Sliding the unit into the enclosure with the weight of the
unit on the side gaskets can damage the gaskets.

1. Attach the side gaskets to both sides of the
frequency converter. Refer to step 5 in
Illustration 1.11.

2. Stand up the enclosure and the D-frame unit side by
side.

3. Attach 2 M8 eyebolts (not included) to the top of the
D-frame unit.

4. Using a hoisting mechanism to support the D-frame
unit, lower the unit into the enclosure being careful
not to tear the side gaskets. Refer to step 6 in
Illustration 1.11.

5. Remove the eyebolts from the D-frame unit.

6. Install the top plate assembly. Refer to step 7 in
Illustration 1.11.

6a With the gasket facing the enclosure, secure

the top plate to the enclosure using M5x18
screws, 14 (D5h/D6h) or 18 (D7h/D8h).

6b Torque to 5.1 Nm (45 in-lb).

7. Secure the unit to the options enclosure.

8. Reconnect the unit to the mains and motor.

9. Securely fasten the front door of the unit and the
front panel on the options 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

MI70F102 Danfoss A/S © 10/2016 All rights reserved.

5

Illustration 1.11 Reinstalling the Frequency Converter into the 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

6

Danfoss A/S © 10/2016 All rights reserved. MI70F102

1.5.5 Installing Gaskets to the Back of a
D5h/D6h Enclosure

NOTICE

APPLYING GASKETS

This kit contains gaskets to ensure a proper seal between
metal parts. Before adhering a gasket to a part, check that
the part matches the gasket and that no holes are covered.
Remove paper backing and place the sticky side on the part.

For the following steps, refer to Illustration 1.12.

D5h/D6h enclosures with a pedestal

1. Install the mounting gasket (1) to the top of the
enclosure.

2. Install 1 of the vent gaskets (5) around the exhaust
vent opening on the back of the enclosure.

3. On top of the gasket, install the exhaust spacer (2) to
the back of the enclosure panel using 6 M5x18
screws. Torque to 5.1 Nm (45 in-lb).

4. Install 1 of the vent gaskets (5) to the exhaust spacer.

5. Apply the 2 labels (6) over the back-channel form
holes.

6. Install 1 of the vent gaskets (7) around the intake
vent opening on the back of the enclosure.

7. On top of the gasket, install the intake spacer (3) to
the back of the enclosure panel using 6 M5x18
screws. Torque to 5.1 Nm (45 in-lb).

8. Install 1 of the vent gaskets (7) to the intake spacer.

9. Install the slot gasket (4) to cover the mounting holes
used to secure the enclosure to the base plate.

D5h/D6h enclosures without a pedestal

1. Install 1 of the vent gaskets (5) around the exhaust
vent opening on the back of the enclosure.

2. Apply the 2 labels (6) over the back-channel form
holes.

3. Install 1 of the vent gaskets (7) around the intake
vent opening on the back of the enclosure.

4. Install the slot gasket (4) to cover the mounting holes
used to secure the enclosure to the base plate.

1Mounting gasket

2 Exhaust spacer (Used on pedestal units only)

3 Intake spacer (Used on pedestal units only)

4Slot gasket

5 Exhaust vent gaskets

6Label

7 Intake vent gaskets

1) Gasket between vent spacer and mounting backplate/wall is used

only on pedestal-mounted units.

Illustration 1.12 Installing Sealing Gaskets to Back Panel for the

D5h/D6h Frequency Converters

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.

7

1.5.6 Installing Gaskets to the Back of a
D7h/D8h Enclosures

NOTICE

APPLYING GASKETS

This kit contains gaskets to ensure a proper seal between
metal parts. Before adhering a gasket to a part, check that
the part matches the gasket and that no holes are covered.
Remove paper backing and place the sticky side on the part.

1. Install 1 of the vent gaskets (2) around the exhaust
vent opening on the back of the enclosure.

2. On top of the gasket, install the exhaust spacer (1) to
the back of the enclosure panel using 8 M5x18
screws. Torque to 5.1 Nm (45 in-lb).

3. Install 1 of the vent gaskets (2) to the exhaust spacer.

4. Apply the 2 labels (3) over the back-channel form
holes.

5. Install 1 of the vent gaskets (5) around the intake
vent opening on the back of the enclosure.

6. On top of the gasket, install the intake spacer (4) to
the back of the enclosure panel using 8 M5x18
screws. Torque to 5.1 Nm (45 in-lb).

7. Install 1 of the vent gaskets (5) to the intake spacer.

8. Install the slot gasket (6) to cover the mounting holes
used to secure the enclosure to the base plate.

1 Exhaust spacer

2Exhaust vent gaskets

3Slot gasket

4Intake spacer

5Intake vent gaskets

6Slot gasket

Illustration 1.13 Installing Sealing Gaskets to Back Panel for the

D7h/D8h Frequency Converters

Installation Instructions

In-back/Out-back Cooling Kit for D5h/D6h and D7h/D8h Enclosures VLT® Series FC 102, FC 202,
and FC 302

8

Danfoss A/S © 10/2016 All rights reserved. MI70F102

1.5.7 Creating Vent Openings in the Mounting Backplate

1. Cut out the intake and exhaust openings in the mounting backplate. The openings must match the vent openings in the
back panel. See the

product-specic

dimensions in Illustration 1.14 and Illustration 1.15.

2. For the D5h/D6h enclosures, perform the following steps:

2a Drill 4 mounting holes near the top of the mounting backplate.

2b Drill the 4 screw holes around the exhaust (top) vent openings and insert 4 M5 X 12 pem studs.

2c Drill the 4 screw holes around the intake (bottom) vent openings and insert the 4 M5 X 12 pem studs.

3. For the D7h/D8h enclosures, perform the following steps:

3a Drill 4 mounting holes near the top of the mounting backplate.

3b Drill the 8 screw holes around the exhaust (top) vent openings and insert 8 M5 X 12 pem studs.

3c Drill the 8 screw holes around the intake (bottom) vent openings and insert the 8 M5 X 12 pem studs.

Illustration 1.14 Vent Opening Dimensions for the Mounting

Backplate, D5h/D6h

Illustration 1.15 Vent Opening Dimensions for the Mounting

Backplate, D7h/D8h

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.

9

Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on
order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed. All trademarks in this material are property of the respective companies. Danfoss
and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.

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Ulsnaes 1
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vlt-drives.danfoss.com

*MI70F102*

MI70F102130R0601 10/2016