Rack Installation - Overview 
56   HC900 Process Controller Installation and User Guide  Revision 19 
    06/14 
Equipment Preparation 
A checklist for site preparation is given in Table 7. 
Table 7 – Site and Equipment Preparation 
Step  Procedure  Reference 
1  Verify that sufficient numbers of the following items are on 
hand: 
•  Racks (4-, 8- and 12-slot)  
•  Power Supplies: 1 per rack  
•  C30/C50/C70 Controller Module or Scanner 1 port (1 per 
rack) 
•  Redundancy: 
−  Each Controller Rack:  2 Power Supplies, 2 C75 CPUs, 
1 Redundancy Switch Module. 
−  Each I/O Rack:  1 Scanner dual-port module, 1 Power 
Supply, 1 reserve Power Supply (optional), 1 Power 
Status Module (optional) 
•  I/O Modules (correct type for each configured slot) 
•  Terminal Blocks, Barrier or Euro style, (1 for each I/O 
Module) 
•  Jumpers 2-position or 10-position, (for designated 
Terminal Blocks) 
•  Tie Wraps (1 or 2 for each Terminal Block) 
•  I/O Label (one per terminal block, by module type) 
•  Filler Block Cover (1 for each slot not occupied by an 
I/O Module)  
•  Blank label (1 for each Filler Block Cover) 
•  Grounding Bars for I/O wiring shields (1 or 2 for each 4-
slots in each rack) 
•  Wiring terminal lugs (for connecting I/O shields to 
grounding bars) 
•  Sheet metal screws, steel #10 or M4, for mounting racks 
in enclosures (4 screws for 4-slot racks, 8 screws for 8- or 
12-slot racks) 
•  Section on Pre-Installation 
Planning. 
•  Sections on installation 
 
2  Install (or verify correct installation of) enclosures for HC900 
Controllers and ancillary equipment: 
•  Mounting rails or flat-panels 
•  (for cabinet with multiple HC900 Chassis): 
−  grounding bus 
−  barrier strip for AC power 
•  Master control Relay 
Mount Racks 
Table 8 – Mount Rack