Danfoss Soft Starter Finger Guards Instruction Manual
- June 1, 2024
- Danfoss
Table of Contents
Danfoss Soft Starter Finger Guards
Product Overview
These instructions provide information about installation of finger guard kits. The instructions are targeted at users already familiar with the VLT® Soft Starters MCD 500, or VLT® Compact Starters MCD 200/202. Read the instructions before installation and ensure that instructions for safe installation are observed.
Additional resources
Further manuals and instructions are available for download at vlt-
drives.danfoss.com/Support/Technical-Documentation/.
Items Supplied
The finger guard is available in deferent kits depending on model and enclosure size. For a list of all available kit part numbers, refer to chapter 4.5 Packing List.
Safety Instructions
Finger guards t over the soft starter power terminals to increase IP rating and prevent accidental contact with live terminals.
ELECTRICAL SHOCK HAZARD
VLT® Soft Starters contain dangerous voltages when connected to mains voltage.
Models MCD5-0360C ~ MCD5-1600C: The bus bar and heat sink are live while the
unit operates (starts, runs, or stops). If the soft starter is installed
without a main contactor, the bus bar and heat sink are live whenever mains
voltage is connected. This is also the case when the soft starter is ready or
tripped.
Improper installation of the motor or the soft starter, and installing or
servicing with power connected, can cause death, serious injury, or equipment
failure.
To avoid death, serious injury, or equipment failure:
- Only use quailed electricians for carrying out the electrical installation.
- Disconnect the soft starter from all power sources before installation or service.
- Fit finger guards to all terminals, even if no cable is connected.
- Treat the bus bar and heat sink as live whenever the unit has mains voltage connected. Also take this precaution when the soft starter is tripped or waiting for a command.
- Follow the guidelines in these instructions and local electrical safety codes.
Installation
IP20 Protection for MCD 200, MCD5-0131B ~ MCD5-0215B, and MCD5-0245C
MCD 200 and MCD 500 (enclosure sizes G2 and G3C) models use rubber finger guards. Rubber finger guards provide IP20 protection when used with cable of diameter 22 mm or greater.
Installation
-
Place 3 finger guards side by side in 1 retaining bracket. Align the assembly so that the screw holes in the bracket match the screw holes in the soft starter.
MCD 200 only: Remove the 2 top screws from the casing around the power terminals. MCD 500 G3C enclosure size models only: Fit the finger guard base chassis to the MCD 500 enclosure rst before installing rubber finger guards. -
Feed each power cable through the narrow end of each finger guard. Connect the cables to the appropriate terminals on the soft starter.
-
If the cables do not t through the finger guards, shorten the finger guards at the narrow end to make a bigger opening.
-
Screw the retaining bracket to the soft starter. MCD 200 only: Use the screws from step 1 to attach the retaining bracket to the soft starter casing. MCD 500 G3C enclosure size models only: Fit the finger guard cover over the finger guard base chassis to complete the arrangement.
-
Repeat steps 1–4 for the other set of terminals.
Illustration 4.1 Finger Guard Installation for MCD 200
Illustration 4.2 Finger Guard Installation for MCD 500 G2 Enclosure Size
Table 4.1 Legend to Illustration 4.1 and Illustration 4.2
| 1 | Screws |
|---|---|
| 2 | Retaining bracket |
| 3 | Finger guards |
Illustration 4.3 Finger Guard Installation for MCD 500 G3C Enclosure Size
| 1 | Screws |
|---|---|
| 2 | Retaining bracket |
| 3 | Finger guards |
| 4 | Finger guard base chassis |
| 5 | Top cover |
IP20 Protection for MCD5-0245B ~ MCD5-0961B
MCD 500 (enclosure sizes G3B and G4B) models use rubber finger guards. Rubber finger guards provide IP20 protection when used with cable of diameter 22 mm or greater.
Installation
-
MCD5-0245B ~ MCD5-0396B: Screw the finger guard plate to the base of the soft starter.
MCD5-0469B ~ MCD5-0961B: Screw the finger guard bracket to the enclosure of the soft starter. -
Fit 1 polycarbonate retaining bracket over each finger guard.
-
Feed each power cable through the narrow end of each finger guard. Connect the cables to the appropriate terminals on the soft starter.
-
If the cables do not t through the finger guards, shorten the finger guards at the narrow end to make a bigger opening.
-
Screw each retaining bracket to the finger guard plate/bracket.
-
MCD-50469B ~ MCD5-0961B: Fit the finger guard cover over the bracket to complete the arrangement.
-
Repeat steps 1–6 for the other set of terminals.
Illustration 4.4 Finger Guard Installation for MCD 500 G3B Enclosure Size
| 1 | Screws |
|---|---|
| 2 | Retaining bracket |
| 3 | Finger guards |
| 4 | Finger guard plate |
Illustration 4.5 Finger Guard Installation for MCD 500 G4B Enclosure Size
| 1 | Screws |
|---|---|
| 2 | Retaining bracket |
| 3 | Finger guards |
| 4 | Finger guard bracket |
| 5 | Top cover |
IP20 Protection for MCD5-360C ~ MCD5-1600C
MCD 500 enclosure sizes G4C and G5C use finger guard chassis enclosures to isolate live bus bars.
Each kit is only salient for protection of either top or bottom cable terminals. If both top and bottom cable termination is used, 2 finger guard kits are required.
Installation
- Fasten the finger guard base chassis to the main enclosure of the soft starter using the screws provided.
- Drill power cable access holes into the gland plate using the pilot holes provided. To prevent excessive heating of the gland plate due to large eddy currents, cut horizontal slits between the power cable holes drilled into the gland plate.
- Fit the gland plate to the nger guard base chassis using the screws provided.
- Run the power cables through the holes in the gland plate and connect to the appropriate bus bar terminals of the soft starter. To prevent fraying of cables against the gland plate, table bushes or glands (not supplied) appropriate for the size of cable used.
- Fit the finger guard cover over the finger guard base chassis to complete the arrangement.
- Repeat steps 1–5 for the other set of terminals.
Table 4.2 Legend to Illustration 4.6 and Illustration 4.7
| 1 | Screws |
|---|---|
| 2 | Gland plate |
| 3 | Finger guard base chassis |
| 4 | Finger guard cover |
Built-up Dimensions
| A | B | C | D | E | F | G | |
|---|---|---|---|---|---|---|---|
| MCD 200 | MCD 500, G2 | MCD 500, G3B | MCD 500, G4B | ||||
| MCD 500, G3C | MCD 500, G4C | MCD 500, G5C | |||||
| A [mm (in)] | 367 (14.4) | 577 (22.7) | 567 (22.3) | 1161 (45.7) | 878 (34.6) | 853 | |
| (33.6) | 1036 (40.8) | ||||||
| B [mm (in)] | – | – | – | 300 (11.8) | 261 (10.3) | 308 (12.1) | 286 (11.3) |
| C [mm (in)] | – | – | – | – | – | 1146 (45.1) | 1319 (51.9) |
Packing List
Table 4.3 Packing List MCD 200, MCD 500 Enclosure Size G2, MCD 500 Enclosure Size G3B, and MCD 500 Enclosure Size G4B
| 175G9007 | 175G5662 | 175G5730 | 175G5731 |
|---|---|---|---|
| MCD 200 1) | MCD 500 G2 enclosure size 1) | **MCD 500 G3B | |
| enclosure size 1)** | MCD 500 G4B enclosure size 1) | ||
| 6 finger guards (rubber) | 6 finger guards (rubber) | 9 finger guards (rubber) |
12 finger guards (rubber)
2 retaining brackets| 2 retaining brackets| 9 retaining brackets| 12 retaining
brackets
1 installation instructions| 4 M4x10 screws| 2 finger guard plates| 2 finger
guard bracket
–| 6 cable ties| 18 M4x14 screws| 2 finger guard cover
–| 1 installation instructions| 12 M4x12 screws| 24 M4x16 screws
–| –| 1 installation instructions| 12 M4x12 screws
–| –| –| 1 installation instructions
Table 4.4 Packing List MCD 500 Enclosure Size G3C, MCD 500 Enclosure Size G4C, and MCD 500 Enclosure Size G5C
| 175G5663 | 175G5664 | 175G5665 |
|---|---|---|
| MCD 500 G3C enclosure size 2) | MCD 500 G4C enclosure size | |
| 2) | MCD 500 G5C enclosure size 2) | |
| 3 finger guards (rubber) | 1 finger guard grille | 1 finger guard grille |
| 1 finger guard cover | 1 finger guard cover | 1 finger guard cover |
| 1 finger guard chassis | 1 finger guard base chassis | 1 finger guard chassis |
| 1 clamp plate | 2 finger guard side chassis | 1 gland plate |
| 11 M4x10 screws | 1 gland plate | 12 M4x10 screws |
| 1 installation instructions | 6 M4x10 screws | 1 installation instructions |
| – | 12 M4x16 screws | – |
| – | 2 M4 nuts | – |
| – | 1 installation instructions | – |
- Only 1 kit required.
- Each kit is only salient for protection of either top or bottom cable terminals. If both top and bottom cable termination is used, 2 finger guard kits are required.
Customer Support
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 sub sequential 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.
Danfoss A/S Ulsnaes 1 DK-6300 Graasten
vlt-drives.danfoss.com
References
- Global AC drive manufacturer - Danfoss Drives | Danfoss
- Global AC drive manufacturer - Danfoss Drives | Danfoss