Danfoss FK11 iC7 Series Frequency Converters Ground Bar Kit Installation Guide

Danfoss FK11 iC7 Series Frequency Converters Ground Bar Kit

Product Information

Specifications

• Product Name: Ground Bar Kit for FK11/FB11 and FK12/FB12
• Kit Numbers: 176F4188
• Items Supplied:
  • Ground bar x2
  • Angle bracket x2
  • M5x18 mm screw x4
  • M6 hex nut x4

Product Usage Instructions

Installation
Safety Information

• NOTICE: Only qualified, Danfoss authorized personnel should install the parts described in these instructions.
• WARNING: A discharge time of 40 minutes is required before performing any service or repair work to avoid serious injury.
• WARNING: High voltage can be present even when the warning LED indicator lights are off. Follow the steps to discharge fully.
• WARNING: Electrical shock hazard. Proper installation by qualified electricians is essential to avoid injury or equipment failure.
• NOTICE: Be cautious of electrostatic discharge to prevent component damage.

Assembling the Ground Bars
The ground bar kit includes 2 ground bars, one for the mains input side and one for the motor side of the frequency converter. Follow these steps to assemble the ground bars:

1. Place the 1st ground bar over the 2 threaded posts on 1 of the angle brackets.
2. Fasten 2 M6 hex nuts (T30) to the bracket posts, 1 on each post. Torque to 3.9 Nm (35 in-lb).

FAQ

• Q: Who should install the ground bar kit?
  A: Only qualified, Danfoss authorized personnel are allowed to install the ground bar kit.

• Q: How long should you wait before performing service or repair work on the frequency converter?
  A: Wait for 40 minutes after power has been removed to allow the DC-link capacitors to discharge fully.

• Q: What precautions should be taken to avoid electrical shock hazards?
  A: Disconnect the frequency converter from all power sources before installation or service and follow local electrical safety codes.

Overview

Description
The ground bar kit fits iC7 Series Frequency Converters in the following frames:

• FB11 (IP54/UL Type 12)
• FK11 (IP21/UL Type 1)
• FB12 (IP54/UL Type 12)
• FK12 (IP21/UL Type 1)

The frame and protection rating are listed on the frequency converter product label.

Kit Numbers
Use these instructions with the following kit.

Table 1: Number for Ground Bar Kits

Items Supplied
The following parts are contained in the kit.
Table 2: Items Supplied in Ground Bar Kit

Installation

Safety Information

NOTICE – QUALIFIED PERSONNEL
Only qualified, Danfoss authorized personnel are allowed to install the parts described in these installation instructions.

• Disassembly and reassembly of the frequency converter must be done in accordance with the service guide.
• Use the standard fastener torque values from the service guide, unless the torque value is specified in these instructions.

WARNING – DISCHARGE TIME (40 MINUTES)
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 40 minutes after power has been removed before performing service or repair work can result in death or serious injury.

• Stop the 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 the motor.
• Disconnect any brake option.
• Disconnect any DC connector option.
• Wait 40 minutes for the DC-link capacitors to discharge fully.
• Before performing any service or repair work, measure the voltage level to verify that the capacitors are fully discharged.

WARNING – ELECTRICAL SHOCK HAZARD
The frequency converter contains dangerous voltages when connected to mains voltage. Improper installation, and installing or servicing with power connected, can cause death, serious injury, or equipment failure.

• Only use qualified electricians for the installation.
• Disconnect the frequency converter from all power sources before installation or service.
• Treat the frequency converter as live whenever the mains voltage is connected.
• Follow the guidelines in these instructions and local electrical safety codes.

NOTICE – ELECTROSTATIC DISCHARGE
Electrostatic discharge can damage components.
Ensure electrostatic discharge before touching internal frequency converter components, for example by touching a grounded, conductive surface or by wearing a grounded armband.

Assembling the Ground Bars
The ground bar kit includes 2 ground bars, 1 for the mains input side and 1 for the motor side of the frequency converter. Use the following steps to assemble the ground bars before installation.

1. Place the 1st ground bar over the 2 threaded posts on 1 of the angle brackets.

2. Fasten 2 M6 hex nuts (T30) to the bracket posts, 1 on each post.

3. Repeat for remaining ground bar and angle bracket.
   Position the 2nd ground bar with the long end oriented in the opposite direction on the bracket. When correctly assembled, the 2 ground bars mirror each other.

4. M6 hex nut

5. Ground bar assembly for mains side

6. Angle bracket

7. M5x18 mm screw

8. Side view of assembled ground bar and bracket

9. Front view of assembled ground bar and bracket

10. Ground bar assembly for motor side

11. End view of assembled ground bar and bracket

Installing the Ground Bars
After assembling the ground bars, use the following steps to install them in the frequency converter.

1. Remove 4 screws from the mounting holes in the midplate, 2 from each side of the frequency converter.
2. Position the 2 angle brackets with attached ground bars over the mounting holes in the midplate.
3. Fasten angle brackets to the midplate with 4 M5x18 mm screws (T25), 2 in each angle bracket.
   Tighten to 2.3 Nm (20 in-lb).

1. Mains side ground bar
2. Motor side ground bar

Danfoss A/S
Ulsnaes 1
DK-6300 Graasten
drives.danfoss.com

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References

• Global AC drive manufacturer - Danfoss Drives | Danfoss

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