Honeywell International Inc. CTU-K05 Manuale Utente

The I/O plug-in board features a connector that includes two opto-coupled 
inputs and two relay outputs, as illustrated in Figure 10. 

 

 

jumper 

jumper 

jumpers 

jumpers 

relay 1  

relay 2  

input 1  

input 2 

 

 
 
 
 
connector to 
mother 
board 

relay output 1 

relay output 1 
relay output 2 
relay output 2 
 
input 1 - 

input 1 + 
input 2 - 
input 2 + 

 

Connection to LCD control board 

 

Note:  When the cables go externally, shielded cables must be used. The 

cable’s shield must be connected to ground connector 

You can define the operational mode of each relay by positioning the 
appropriate jumpers as follows: 

•  Jumper «OUT1» between 12 (NO) for relay 1 normally open 

•  Jumper «OUT1» between 23 (NC) for relay 1 normally closed 

•  Jumper «OUT2» between 12 (NO) for relay 2 normally open 

•  Jumper «OUT2» between 23 (NC) for relay 2 normally closed 

 

You can define the operational mode of each input by positioning the 
appropriate jumpers as follows: 

•  Jumpers «IN1» between 12 for input 1 on dry contact 

•  Jumpers «IN1» between 23 for input 1 opto -coupled 

•  Jumpers «IN2» between 12 for input 2 on dry contact 

•  Jumpers «IN2» between 23 for input 2 opto -coupled