Danfoss VLT PTC Thermistor Card MCB 112, Operating Manual

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1 Introduction
1.1 Purpose of this Operating Guide
This operating guide provides information for safe installation and commissioning of the VLT
®
PTC Thermistor Card MCB 112 used
with a Danfoss VLT
®
drive with Safe Torque Off (STO).
VLT
®
PTC Thermistor Card MCB 112 is also referred to as MS 220 DA.
This operating guide is intended for use by qualified personnel only. To use the drive safely and professionally, read and follow the
instructions, and pay particular attention to the safety instructions and general warnings. Keep this operating guide available with
the drive at all times.
VLT® is a registered trademark.
1.2 Additional Resources
This manual is targeted at users already familiar with the VLT
®
drives. It is intended as a supplement to the manuals and instructions
for download at http://drives.danfoss.com/downloads/portal/ .
Read the instructions shipped with the drive and/or drive option before installing the unit, and observe the instructions for safe
installation.
1.3 Version History
This guide is regularly reviewed and updated. All suggestions for improvement are welcome.
The original language of this guide is English.
Table 1: Version History
Version Remarks
MG33V302 Editorial changes. Now covering the complete system.
AQ267038105120, version 0101 Update for compliance to ATEX directive 2014/34/EU and actual standards.
1.4 Products Covered
The VLT
®
PTC Thermistor Card MCB 112 is available for the following drives:
VLT
®
HVAC Drive FC 102.
VLT
®
AQUA Drive FC 202.
VLT
®
AutomationDrive FC 302.
1.5 Functional Overview
1.5.1 Intended Use
The VLT
®
PTC Thermistor Card MCB 112 is intended to:
Protect electrical motors against inadmissible heating due to overload.
Protect explosion-protected motors in explosive atmospheres caused by:
gases, vapors, or mists, Zone 1 and Zone 2,
and/or in explosive atmospheres caused by dust, Zone 21 and Zone 22.
N O T I C E
MARKINGS
Refer to marking G for Zone 1 and Zone 2. Refer to marking D for Zone 21 and Zone 22.
All functions in the MCB 112 serve to protect both non-explosive-protected motors and explosive-protected motors in regular oper-
ation and in case of failure.
The VLT
®
PTC Thermistor Card MCB 112 is designed in accordance with EN 60947-8 (VDE 0660 part 0302). Only connect PTC thermis-
tor sensors according to DIN VDE V 0898-1-401: 2020-03 (EN 60947-8).
AQ267038105120en-000101 / 130R0104 6 | Danfoss A/S © 2022.08
Introduction
VLT® PTC Thermistor Card MCB 112
Operating Guide