Honeywell HC900 사용자 설명서

 

Revision 5 

  HC900 Hybrid Controller Installation and User Guide 

57 

9/03  

This section contains descriptions of and procedures for installing I/O Modules in controller racks and in 
I/O expansion racks(C50 CPU only).   

Each input or output module is placed in an I/O slot in a rack as shown in Figure 25. 

Each "slot" in a rack includes a set of guides that locate the circuit board in the rack and a 20-pin (4 x 5) 
socket in the backplane that receives the associated 4 x 5-pin plug at the back of the IO module.  

At the front of each IO module, a twenty pin (in-line) plug receives the associated 20-pin socket on the 
back of a terminal block.  When the I/O module is inserted into the rack and the terminal block is placed on 
the circuit board, two captured screws in the terminal block are fastened to metal tabs on the rack.  

 

 

•  Do not use an input/output terminal block if the terminal block is damaged, if the door is 

missing, or if one or both mounting screws are missing. 

•  Always tighten both terminal block screws before applying field power to the module. 
•  Do not apply energized ("live") field wiring to an input/output module that is not installed in 

one of the racks in the HC900 Controller. 

•  Do not operate the controller without a Protective Earth connection. 
Failure to comply with these instructions could result in death or serious injury.