Installation Guide
IGBT Module Replacement for D1h–D8h Drives
VLT® FC Series FC 102, FC 103, FC 202, and FC 302
Overview
1.1 Description
D1h–D8h drives have 3 IGBT modules. If the brake option is present, the drive also includes a brake IGBT module. This IGBT module replacement kit contains all components required to install 1 replacement IGBT module or 1 brake IGBT module.
NOTICE
SPARE PARTS COMPATIBILITY
recommends replacement of all IGBT modules or all brake IGBT modules, when 1 or more modules fail.
– For best results, replace modules with parts from the same lot number.
1.2 Kit Numbers
Use these instructions with the following kits.
Table 1: Numbers for IGBT Module Replacement Kits
| Kit number | Kit description |
| 176F3362 | IGBT dual module 300 A 1200 V T4/T5 drive |
| 176F3363 | IGBT dual module 450 A 1200 V T2/T4/T5 drive |
| 176F3364 | IGBT dual module 600 A 1200 V T2/T4/T5 drive |
| 176F3365 | IGBT dual module 900 A 1200 V T2/T4/T5 drive |
| 176F3366 | IGBT brake module 450 A 1700 V |
| 176F3367 | IGBT brake module 650 A 1700 V |
| 176F3422 | IGBT dual module 300 A 1700 V T7 drive |
| 176F3423 | IGBT dual module 450 A 1700 V T7 drive |
| 176F3424 | IGBT dual module 450 A 1700 V T7 drive PP2 |
| 176F3425 | IGBT dual module 650 A 1700 V T7 drive PP2 |
| 176F4242 | IGBT dual module 450 A 1200 V T4/T5 drive |
1.3 Items Supplied
The following parts are contained in the kit.
- 1 IGBT module
- Syringe of thermal grease
- Hardware for busbar mounting
- Fasteners
Installation
2.1 Safety Information
NOTICE
QUALIFIED PERSONNEL
Only qualified personnel are allowed to install the parts described in these installation instructions.
– Disassembly and reassembly of the drive must be done in accordance with the corresponding service guide.
WARNING
ELECTRICAL SHOCK HAZARD
VLT® FC series drives contain 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 drive from all power sources before installation or service.
– Treat the drive as live whenever the mains voltage is connected.
– Follow the guidelines in these instructions and local electrical safety regulations.
WARNING
DISCHARGE TIME (20 MINUTES)
The drive contains DC-link capacitors, which can remain charged even when the drive is not powered. High voltage can be present even when the warning indicator lights are off.
Failure to wait 20 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, permanent magnet type motors, and remote DC-link supplies, including battery back-ups, UPS, and DC-link connections to other drives.
– Wait 20 minutes for the capacitors to discharge fully before performing any service or repair work.
– Measure the voltage level to verify full discharge.
NOTICE
ELECTROSTATIC DISCHARGE
Electrostatic discharge can damage components.
– Ensure discharge before touching internal drive components, for example by touching a grounded, conductive surface or by wearing a grounded armband.
2.2 Installing the IGBT Module
NOTICE
THERMAL INTERFACE
A proper thermal interface is required between the IGBT module and heat sink. Failure to follow these instructions results in a poor thermal bond and causes premature IGBT failure.
– Ensure that the environment is free of airborne dust and contaminants while applying the thermal grease.
NOTICE
HEAT SINK DAMAGE
A damaged heat sink can cause a drive to malfunction. A clean, undamaged mounting surface allows proper thermal dissipation.
– Take care not to scratch or damage the heat sink when cleaning and servicing the drive.
Refer to the service guide for IGBT disassembly procedures. To install replacement IGBT modules, use the following steps.
- Clean the heat sink using a cloth and solvent or isopropyl alcohol to remove debris and remaining thermal grease.
- To ensure that the thermal grease is not expired, check the expiration date on the packaging. If expired, order a new syringe of thermal grease (p/n 177G5463).
- With the syringe, apply a layer of thermal grease to the bottom of the IGBT module in the pattern shown in Illustration 1.
It is not required to use the whole syringe, but excess thermal grease is not a problem.
Illustration 1: IGBT Thermal Grease Pattern
1. Bottom surface of IGBT module
2. Thermal grease - Place the IGBT module on the heat sink, and twist it back and forth to spread the thermal grease evenly on the IGBT and the heat sink surface.
- Align the mounting holes in the IGBT module with the holes in the heat sink.
- Insert the mounting screws and hand tighten them. The IGBT module requires either 4 or 10 screws to fasten it to the heat sink.
- Using a manual torque wrench to avoid over torquing the screw, follow the fastener tightening sequence shown in Illustration 2. Slowly tighten (maximum 20 RPM) all screws to 50% of the torque values listed in Table 2.
- Repeat the same tightening sequence and slowly tighten (maximum 5 RPM) all screws to 100% of the torque value.
- Tighten the busbar connection terminals to the torque value listed in Table 2.
Illustration 2: IGBT Fastener Tightening Sequence
Table 2: Torque Tightening Values and Sequence
| Kit number | Mounting torque [Nm (in-lb)] | Busbar connection torque [Nm (in-lb)] | Diagram | Screw tightening order |
| 176F3362 | 3.3 (29) | 4.0 (35) | A | 1-2-3-4 |
| 176F3363 | 3.3 (29) | 4.0 (35) | A | 1-2-3-4 |
| 176F3364 | 3.5 (31) | 9.0 (80) | B | 1-2-3-4-5-6-7-8-9-10 |
| 176F3365 | 3.5 (31) | 9.0 (80) | B | 1-2-3-4-5-6-7-8-9-10 |
| 176F3366 | 3.3 (29) | 4.0 (35) | A | 1-2-3-4 |
| 176F3367 | 3.5 (31) | 9.0 (80) | B | 1-2-3-4-5-6-7-8-9-10 |
| 176F3422 | 3.3 (29) | 4.0 (35) | A | 1-2-3-4 |
| 176F3423 | 3.3 (29) | 4.0 (35) | A | 1-2-3-4 |
| 176F3424 | 3.5 (31) | 9.0 (80) | B | 1-2-3-4-5-6-7-8-9-10 |
| 176F3425 | 3.5 (31) | 9.0 (80) | B | 1-2-3-4-5-6-7-8-9-10 |
| 176F4242 | 3.3 (29) | 4.0 (35) | A | 1-2-3-4 |
Danfoss A/S
Ulsnaes 1
DK-6300 Graasten
drives.danfoss.com
Any information, including, but not limited to information on selection of product, its application or use, product design, weight, dimensions, capacity or any other technical data in product manuals, catalogues descriptions, advertisements, etc. and whether made available in writing, orally, electronically, online or via download, shall be considered informative, and is only binding if and to the extent, explicit reference is made in a quotation or order confirmation. Danfoss cannot accept any responsibility for possible errors in catalogues, brochures, videos and other material. Danfoss reserves the right to alter its products without notice. This also applies to products ordered but not delivered provided that such alterations can be made without changes to form, fit or function of the product. All trademarks in this material are property of Danfoss A/S or Danfoss group companies. Danfoss and the Danfoss logo are trademarks of Danfoss A/S. All rights reserved.
Danfoss A/S © 2023.10
AN341428219214en-000201 / 130R0383 | 6
Documents / Resources
 |
Danfoss FC Series VLT IGBT Module [pdf] Installation Guide 176F3362, 176F3363, 176F3364, 176F3365, 176F3366, 176F3367, 176F3422, 176F3423, 176F3424, 176F3425, 176F4242, FC Series VLT IGBT Module, FC Series, VLT IGBT Module, IGBT Module, Module |