COMMISSIONING 
 
 
98  Service Manual    Part No.: 4417340 Revision 1 
  954 SmartServo FlexLine
 
  Relay contacts (FII-DO) 
7.3.6.1  Introduction 
The Field Interface Instrument - Digital Output (FII-DO) board has 4 
software-controlled, electromechanical relays; see Figure 7-7. 
Note: only two relays, the low rated or high rated, are used not all 4 
together. 
 
Figure 7-7  The relays and LEDs on the FII-DO board 
 
These relays are allocated to FlexConn functions as shown below: 
Function Number  Function 
1  Relay 1 
2  Relay 2 
3  Relay 3 
4  Relay 4 
 
The relays have output status read-back lines. 
With jumpers, the relays can individually be set to Normally Open (NO) 
or Normally Closed (NC).