Page 1
Triguard SC300E TWT10XZO Triplicated
Watchdog Timer
Revision 01
08-5207-01
0
User Manual
This manual covers the following item:
Model Reference
TWT10XZO 001-1187
Part Number
Page 2
Use of DANGER,WA R NI N G,CAUTION
, and NOTE
This publication includes, DANGER,WA R NI NG,CAUTION
or
related
DANGER
WA RN I NG
CAUTION
NOTE
Although DANGER and WA R NI N G hazards are related to personal injury, and CAUTION hazards are associated with
equipment
conditions,
DANGER,WA R N I NG
All trade references are duly acknowledged.
other important information.
Hazards which could result in severe personal injury or death
Hazards which could result in personal injury
Hazards which could result in equipment or property damage
Alerts user to pertinent facts and conditions
or
property damage, it should be understood that operation of damaged equipment could, under certain operational
result in degraded process performance leading to personal injury or death. Therefore, comply fully with all
, and CAUTION notices.
TRADEMARKS
, and NOTE information where appropriate to point out safety
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TWT10XZO Tri plic ated Watchdog Timer User Manual
Tab le of Contents
TAB LE OF CONTENTS
Chapter 1 - Introduction and technical data
1.1 Purpose..................................................................................................................... 1-1
1.2 Associated documentation ....................................................................................... 1-2
1.3 Specification ............................................................................................................ 1-2
1.4 Environmental specifications................................................................................... 1-3
1.5 External connections................................................................................................ 1-4
1.6 Transport and handling ............................................................................................ 1-4
Chapter 2 - Technical description
2.1 Physical .................................................................................................................... 2-1
2.1.1
Relay Modules ........................................................................................ 2-1
2.2 Theory of operation ................................................................................................. 2-2
2.2.1
Operating modes ..................................................................................... 2-2
2.2.2
Operation ................................................................................................ 2-2
2.2.3
Signal interface ....................................................................................... 2-4
2.3 Power supplies ......................................................................................................... 2-4
Chapter 3 - Servicing
3.1 Scope........................................................................................................................ 3-1
3.1.1
Safety relay ............................................................................................. 3-1
3.1.2
Daughterboard ........................................................................................ 3-1
3.2 Functional testing..................................................................................................... 3-1
Chapter 4 - Service support
4.1 Spare parts................................................................................................................ 4-1
4.2 List of spares ............................................................................................................ 4-1
Chapter 5 - Glossary of terms
5.1 Glossary of terms ..................................................................................................... 5-1
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TWT10XZO Tri plicat ed Watchdog Timer User Manual
Ta bl e of Contents
ii
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