250    HC900 Process & Safety Controller User and Installation Manual  Revision 6 
    21 April 2017 
32 Point DC Digital Input 
ATTENTION: RTP and cables are intended for permanent installation within their own enclosure. 
Mount RTP cable assembly to HC900 Controller (Figure 96). 
  Remove appropriate key tabs from terminal board to allow mating with the module. See page 85. 
  Connect terminal block end of desired cable assembly to 32 point Digital Input module at controller. 
Choose from: 
900RTC-3210  Remote Terminal Cable assembly, 1.0 meters long  
900RTC-3225  Remote Terminal Cable assembly, 2.5 meters long   
  Install 32 point DC DI label into the module connector cover. 
  Connect both shield drain wires to the grounding bars at the base of the HC900 rack.  All field-wiring 
shields must be grounded as described in the shield grounding section (page 81). 
  Latch to rail. See page 253. 
  Connect cables to RTPs. Cables are marked “RTP A” and “RTP B.” In step 4, RTP A will be wired to 
Inputs 1-16, RTP B to Inputs 17-32. You can write on the RTPs’ labels to distinguish them. 
Set/verify jumper positions on each RTP as shown. 
 
Module Removal / Insertion Under Power (RIUP) is supported by turning off Switch SW1 to allow removal of 
the module from the rack without causing an arc.  See page 83. 
See page 252 for RTP internal schematic.