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DISTR IBUTION SOLUTIONS
UniSec Digital
Operation and maintenance manual
Index
Safety
2
Introduction
3
1. Technical Specifications
5
1.1 Electrical Specifications
5
1.2 Internal arc withstand
classification
5
2. General information about UniSec Digital
6
2.1 Maintenance intervals
7
2.2 Inspections
7
2.3 Assistance
7
2.4 Repair and replacement
7
2.5 Measurements given by LHMI module
7
2.6 Alarms and corrective
8
3. General information about the MDC4-M
concentrator 10
3.1 Overview
10
3.2 Physical Interfaces
11
3.3 Terminals diagram
12
3.4 SAIS application
13
4. MDC4-M Operation and Commissioning
14
4.1 LHMI Operation
14
4.2 Commissioning
16
5. System technical data
18
5.1 OP320 LHMI
18
5.2 MDC4-M
19
5.3 Serial communication parameters
21
6. Wireless sensor replacement
22
6.1 ....
22
6.2 Changing the sensor identification
code in the MDC4-M concentrator
24
7. Concentrator replacement
26
8. Environmental sensor replacement
27
9. LHMI module replacement
28
Annex 1
30
Annex 2
34
Glossary
36
