Contents
1 Introduction
3
1.1 Purpose of the Manual
3
1.2 Additional Resources
3
1.3 Document and Software Version
3
1.4 Products Covered
3
1.5 Functional Overview
3
1.5.1 Intended Use
3
1.5.2 Foreseeable Misuse
4
1.5.3 Thermal Motor Protection
4
1.5.4 ATEX ETR Thermal Monitoring
4
1.5.5 Tripping Function
4
1.5.6 Safe Separation
4
1.5.7 Safe Disconnection Principle
4
1.6 Motor Requirements
5
1.6.1 Motor Limits and Rules
5
1.6.2 Additional Motor Requirements
5
1.7 Approvals and Certifications
5
1.8 Symbols, Abbreviations, and Conventions
6
2 Safety
7
2.1 Safety Symbols
7
2.2 Qualified Personnel
7
2.3 Safety Precautions
7
3 Installation
9
3.1 Safety Instructions
9
3.2 Installation of Sensor Circuit Wires
9
3.3 Installation of the VLT
®
PTC Thermistor Card MCB 112
10
4 Commissioning
12
4.1 Operation and Maintenance
12
4.1.1 Monitoring Sensor Resistance
12
4.2 Parameter Set-up
13
4.2.1 Alarm Handling
13
4.3 Parameter Set-up for Ex-e and Ex-n Motors
14
4.3.1 Maximum Current
14
4.3.2 Maximum Current Limit
14
4.3.3 Minimum Motor Frequency
14
4.3.4 Maximum Motor Frequency
15
4.3.5 Minimum Switching Frequency
15
Contents
Operating Instructions
MG33V302
Danfoss A/S © 01/2015 All rights reserved.
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