DOC-0017-04-EN: AC20 Series - Hardware Installation Manual 
  DOC-0017-04-EN-A 22.03.2023   53 (154) 
Frames 6 – 10: 
On Frames 6 – 10, the lower terminal cover will need to be removed prior to option card installation. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
If the Communication Interface Option Card needs to be removed, perform steps 2 & 3 in reverse. 
1.  Remove the Comms Interface Option card from its 
packaging. 
2.  Slide the Comms Card along the PCB using the 
connector features for alignment.  
Note: The front facia of the Option should be loose 
at this point. 
3.  When the Comms Interface Option Card is fully 
engaged in the connector and its housing has 
hocked onto the edge of the PCB, fully tighten 
the two T8 screws on the front facia. 
4.  Check that the Option Card is secure and that it 
cannot slide out.