Honeywell HC900 User And Installation Manual page 10

Assemble I/O Expansion Racks ............................................................................................................. 74
I/O Module Installation and Wiring ................................................................................ 78
Overview ................................................................................................................................................ 78
Module Placement in Racks .................................................................................................................. 78
Remote Termination Panel (RTP) .......................................................................................................... 80
Terminal Block-to-Field (Signal) Wiring ................................................................................................. 80
Removal and Insertion Under Power (RIUP) ......................................................................................... 83
I/O Module Installation Procedures ........................................................................................................ 84
I/O Terminal Block Wiring Diagrams ...................................................................................................... 91
Communications Installation ....................................................................................... 127
Overview .............................................................................................................................................. 127
Wiring and cabling................................................................................................................................ 127
Connecting the Operator Interface to the Controller ............................................................................ 131
Connecting the HC900 Controller to a PC with the Designer Software ............................................... 132
Connecting the HC900 Controller to Modbus device(s) ...................................................................... 152
Operating Characteristics ............................................................................................ 155
Introduction .......................................................................................................................................... 155
Overview .............................................................................................................................................. 155
Power Down / Power Up ...................................................................................................................... 155
Controller Modes .................................................................................................................................. 158
File Download/Upload Functions ......................................................................................................... 163
Redundant Operating Characteristics ......................................................................... 165
Overview .............................................................................................................................................. 165
Start-Up ................................................................................................................................................ 165
Modes of operation (Figure 87) ............................................................................................................ 165
Steady State Operations ...................................................................................................................... 166
Failover ................................................................................................................................................ 169
File Download/Upload Functions ......................................................................................................... 170
Diagnostics and Troubleshooting ................................................................................ 173
Overview .............................................................................................................................................. 173
External Indications of Diagnostic Information ..................................................................................... 173
Controller CPU indicators .................................................................................................................... 174
Scanner indicators ............................................................................................................................... 182
I/O Module Indicators ........................................................................................................................... 187
Overview .............................................................................................................................................. 192
Removal and Replacement Procedures ...................................................................... 196
x HC900 Process & Safety Controller User and Installation Manual Revision 6
21 April 2017