INSTRUCTIONS
INSTALLATION OF TOP SECTION BACK-CHANNEL COOLING KIT FOR
FRAMES D3, D4 & E2
This instruction sheet is for the installation of the top section only of the back-channel cooling kits available for the VLT® series drives. In addition to the enclosure a 200 mm vented pedestal is required.
The minimum enclosure depth is 500 mm (600 mm for E2 frame) and the minimum enclosure width is 600 mm (800 mm for E2 frame). The maximum depth and width are as required by the installation. When using multiple drives in one enclosure mount each drive on its own back panel and support along the mid-section of the panel. The back-channel cooling kits are very similar in construction for all frames. The D3 and D4 kits do not support “in frame” mounting of the drives. The E2 kit is mounted “in frame” for additional support of the drive. These kits can be used with IP00/Chassis drives as listed in Table 1.
Using these kits as described removes 85% of the losses via the back channel using the drive’s main heat sink fan. The remaining 15% must be removed via the door of the enclosure. (Refer to Note 2 for air flow requirements.)
Table 1. Applicable Drives and Frames
VLT Drive |
Frame |
|
|
HVAC |
D3, D4, E2 |
|
|
Aqua |
D3, D4, E2 |
|
|
Automation |
D3, D4, E2 |
|
|
Notes:
Table 2. Kit Part Numbers
VLT Frame |
Kit Part Number |
|
|
D3 and D4 |
176F1775 |
|
|
E2 |
176F1776 |
|
|
1.The photos in this instruction are based on a D4 Frame installation. D3 and E2 frames use parts similar to those in the photos however they are sized appropriately for those frames.
2.A doorfan(s) is required on the enclosure to remove the heat losses not contained in the backchannel of the drive. The minimum airflow required (at the maximum rated ambient temperature) for the D3 and D4 frame drives is 391 m3/h (230 cfm). The minimum airflow required (at the maximum rated ambient temperature) for the E2 frame drive is 782 m3/h (460 cfm). If additional heat losses are added within the enclosure a calculation must be made to ensure the proper airflow is provided to cool the inside of the enclosure.
3.The end user is responsible for ensuring the enclosure rating of the system after the toponly duct kit is installed.
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Kit Contents
•Ductwork components
•Mounting hardware
•Gasket material
•175R5631 View of Ductwork components, D3 and D4 frames
•175R1037 View of Ductwork components, E2 frame
Required Tools
•Metric Socket Set, 7-19mm
•Socket Extensions
•Torx Driver Set T10-T40
•Torque Wrench 6-50 in-lbs (.7-6 N-M)
Torque Requirements
1.10 mm, M5 Nuts torque to 20 in-lbs (2.3 N-M)
2.T25 Torx screws torque to 20 in-lbs (2.3 N-M)
Install gasket material on the back openings of the drive (Photo 1) prior to installation on the enclosure back panel.
D3 and D4 frames: Use the template provided with the kit (175R5639) to determine the drive location on the back panel of the enclosure. The template is referenced to the top-left corner of the back panel. Therefore the template may be used with any size back panel and both the 1800 mm and 2000 mm high enclosures.
E2 frame: Use the measurements on Drawing 175R1037, Sheet 2 to determine the drive location.
Photo 1. Drive openings on rear are not used in this application.
MI.38.H1.02 - VLT® is a Danfoss Registered Trademark |
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Prior to installing the back panel in the enclosure, apply the gasket on both sides of the bottom duct adapter as shown in Photos 2 and 3.
Photo 2. Bottom duct adapter
Photo 3. Bottom duct adapter w/
Before installing the back panel with the drive in the enclosure, remove and discard the rear-most screws (Photo 4) that are located on the top cover of the drive. The holes will be used to fasten the top ductwork with longer screws provided with the kit.
Photo 4. Top of IP00/Chassis drive.
MI.38.H1.02 - VLT® is a Danfoss Registered Trademark |
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Install the backpanel in the enclosure (Photo 5). Use brackets supplied by the enclosure manufacturer (minimum one per side at the middle of the drive) with appropriate support strip for additional support of the backpanel. For the D4 frame use two supports per side. Consult the enclosure manufacturer manual for additional support requirements if additional components are mounted on the same back panel.
Photo 5. Drive installed in cabinet—D4 Frame.
The top duct work cover is composed of the following pieces as shown in Photo 6. From left to right:
•top duct closing plate
•drive bracket
•duct
•vented top cover
Photo 6. Top duct assembly.
Install the drive bracket onto the duct.
Photo 7. The top duct work partially assembled with bottom flange.
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Temporarily install the top duct section as shown in Photo 8. Use the top duct cover piece to mark the enclosure top for the opening. Alternately, Drawing 175R5639 can be used to mark the enclosure for cut-
Cut the enclosure top. Do not apply gasket to enclosure top (the gasket is part of the duct work).
Photo 8. Top duct work and enclosure top installed.
Photo 9. Enclosure top with cutout.
MI.38.H1.02 - VLT® is a Danfoss Registered Trademark |
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