Contents
1. Introduction ................................................................................................................................................................................... 6
Terminology ....................................................................................................................................................... 6
2. Warnings and Cautions .............................................................................................................................................................. 7
2.1 General Safety Information ................................................................................................................................ 9
2.2 Intended Use .................................................................................................................................................... 10
2.3 Improper Use ................................................................................................................................................... 10
2.4 Safety Instructions for Assembly/Disassembly ................................................................................................ 10
2.5 Operation of OCUs and MCUs with Identical System Address ........................................................................ 10
3. General ....................................................................................................................................................................................... 11
3.1 Radio Transmission ......................................................................................................................................... 11
3.1.1 Continuous Transmission ............................................................................................................................. 11
3.1.2 Radio Interference ........................................................................................................................................ 11
3.2 Telegram Security ............................................................................................................................................ 11
3.2.1 Frame Type .................................................................................................................................................. 11
3.2.2 System Address ........................................................................................................................................... 11
3.2.3 CRC ............................................................................................................................................................. 11
3.2.4 Frame Counter ............................................................................................................................................. 12
3.5 System Parameters .......................................................................................................................................... 12
4. CT24 MCU Overview ................................................................................................................................................................ 13
4.1 Description ....................................................................................................................................................... 14
4.1.1 Optional 9-36 VDC Input MCU ..................................................................................................................... 20
5. Installation ................................................................................................................................................................................... 21
5.1 General ............................................................................................................................................................ 21
5.2 Mounting .......................................................................................................................................................... 21
5.2.1 Choosing a Mounting Location ..................................................................................................................... 21
5.3 Interface ........................................................................................................................................................... 25
5.4 Interface Wiring ................................................................................................................................................ 25
5.5 Safety Critical Interfaces .................................................................................................................................. 25
5.6 Power and Control Cables Interface ................................................................................................................ 25
5.7 Determination of Correct Control Circuit Wire Gauge ...................................................................................... 26
5.7.1 For High Duty Cycle Applications ................................................................................................................. 27
5.7.2 For Low Duty Cycle Applications ................................................................................................................. 27
5.8 Examples of Wire Sizing .................................................................................................................................. 28
5.8.1 Low Duty Application (Typical Crane) .......................................................................................................... 28
5.8.2 High Duty Application (Crane with Multi Select or Machine) ........................................................................ 28
5.8.3 High Duty Maximum Current Application ..................................................................................................... 28
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