Introduction - Purpose 
x   HC900 Process Controller Installation and User Guide  Revision 19 
    06/14 
Tables 
Table 1 – Descriptions of Major Components (Figure 4) .................................................................................... 15 
Table 2 – Descriptions of Major Redundancy Components ................................................................................. 17 
Table 3 – Serial port DIP switch settings ............................................................................................................ 36 
Table 4 – Power Applied, by Module Type ........................................................................................................ 43 
Table 5 – Guidelines for Grouping Wires ........................................................................................................... 51 
Table 6 – Installation Tools ............................................................................................................................... 55 
Table 7 – Site and Equipment Preparation .......................................................................................................... 56 
Table 8 – Mount Racks ...................................................................................................................................... 58 
Table 9 – Assemble C30/C50/C70 Controller Rack ............................................................................................ 60 
Table 10 – Assemble C75 Controller Rack ......................................................................................................... 63 
Table 11 – Assemble I/O Expansion Racks ........................................................................................................ 64 
Table 12 – Minimum Recommended Wire Sizes ................................................................................................ 69 
Table 13 – RIUP: Potential Hazards and Recommended Actions ........................................................................ 73 
Table 14 – Connect Input/Output Wiring ........................................................................................................... 74 
Table 15 – Typical Thermocouple resistance in Ohms per Double Foot @ 68 degrees F ..................................... 82 
Table 16 – Connect Communications Wiring and Cabling ................................................................................ 117 
Table 17 – Links to Controller Communication Ports ....................................................................................... 118 
Table 18 – Parts needed to make RS-485 Cable................................................................................................ 121 
Table 19 – Null Modem Cable Connections ..................................................................................................... 124 
Table 20 – Redundant Network connections in Figure 74 ................................................................................. 136 
Table 21 – Redundant network connections ..................................................................................................... 137 
Table 22 – Controller Operating Modes ........................................................................................................... 150 
Table 23 – Mode Switch Functions .................................................................................................................. 151 
Table 24 – Controller Behavior in Mode Transition.......................................................................................... 152 
Table 25 – Configuration file downloading ...................................................................................................... 154 
Table 26 – LED Indications on Controller CPUs .............................................................................................. 163 
Table 27 – Controller Status LED Diagnostics ................................................................................................. 164 
Table 28 – LED Indications on Scanner Module .............................................................................................. 171 
Table 29 – Scanner LED Diagnostics ............................................................................................................... 172 
Table 30 – LED Indications on I/O Module...................................................................................................... 175 
Table 31 – I/O Module LED Diagnostics ......................................................................................................... 176 
Table 32 – Bad I/O Channel Diagnostics .......................................................................................................... 177 
Table 33 – LED Indications on Ethernet Switch ............................................................................................... 178 
Table 34 – Power Supply Replacement (all except C75) ................................................................................... 185 
Table 35 – Controller Module Replacement ..................................................................................................... 187 
Table 36 – Scanner Module Replacement ........................................................................................................ 188 
Table 37 – RIUP: Potential Hazards and Recommended Actions ...................................................................... 189 
Table 38 – I/O Module Replacement ................................................................................................................ 190 
Table 39 – Installing Backup Battery (CPU not initialized)............................................................................... 192 
Table 40 – Replacing a Backup Battery (CPU Powered)) ................................................................................. 193 
Table 41 - HC900 PV Input Types and Ranges ................................................................................................ 200 
Table 42 – System Size and Availability Summary .......................................................................................... 203 
Table 43 – Fiber Optics Equipment Recommendations ..................................................................................... 204