Danfoss MCB 107, FC 102, FC 103, FC 202, FC 301 Installation guide

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Installation Guide

VLT® 24 V DC Supply MCB 107

VLT® Series FC 102, FC 103, FC 202, and FC 301/FC 302

1 Scope of Delivery, Safety, and Installation

1.1 Purpose of the Manual

This installation guide describes the installation of the VLT® 24 V DC Supply MCB 107.

1.2 Purpose of the VLT® 24 V DC Supply MCB 107

VLT® 24 V DC Supply MCB 107 option is a low voltage supply to the control card or any option card installed. This option keeps the control section (including parameter configurations) and any installed option alive during a power failure.

NOTICE

External power supply

To achieve the intended functionality, an external 24 V DC supply as specified below has to be connected to the terminals of the option.

Specifications for VLT 24 V DC Supply MCB 107

Specification Value

Input voltage range 24 V DC ±15% (maximum 37 V for 10 s)

Maximum input current 2.2 A

Average input current for FC 301/FC 302 0.9 A

Maximum cable length 75 m (246 ft)

Input capacitance load <10 uF

Power-up delay <0.6 s

Connection terminals

• Terminal 35: - external 24 V DC supply

• Terminal 36: + external 24 V DC supply

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Installation Guide | VLT® 24 V DC Supply MCB 107

Illustration 1: Connection to MCB 107 on Enclosure Sizes A2 and A3

1.3 Items Supplied

Scope of Delivery, Safety, and Installation

The VLT® 24 V DC Supply MCB 107 is available in 2 versions: Standard and coated.

Table 1: Ordering Numbers

Version Ordering number

Standard 130B1108

Coated 130B1208

1.4 Safety Instructions

For important information about safety precautions for installation, refer to the product-specific operating guide.

WARNING

DISCHARGE TIME

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 the specified time after power has been removed before performing service or repair work could 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 for the capacitors to discharge fully. The minimum waiting time is specified in the table Discharge time and is also

visible on the nameplate on top of the drive.

Before performing any service or repair work, use an appropriate voltage measuring device to make sure that the capacitors

are fully discharged.

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