KEPCO RA 19-3B - Manual (Page 29)

RA 19-3B 011409
2-13
2.4.2.3.2 PARALLEL CONFIGURATIONS USING EXTERNAL WIRES TO CONNECT SENSE LINES
IN PARALLEL AND EXTERNAL WIRES TO CONFIGURE LOCAL SENSING
Figure 2-8 is a simplified diagram of a typical parallel configuration using local sensing via exter-
nal wires to connect V(+) to S(+), V(–) to S(–) and jumpers connected to the I/O mating con-
necter to connect the sense leads in parallel. This configuration requires the following:
1. For each supply in parallel set DIP switch positions 1 and 2 to OFF (open) (see Figure 2-1).
2. For each DIP switch between parallel-connected slots (C4 and F8), set DIP switch positions
3 and 4 to OFF (open) (sense leads will be connected in parallel in steps 8 and 9) (see Fig-
ure 2-1).
3. For each DIP switch between parallel-connected slots configure position 5 to connect the
current share bus by referring to PAR. 2.4.2.2.
4. Locate DIP switch(es) at end of the parallel group and set positions 3, 4, and 5 to OFF
(open) to isolate the group. (see Figure 2-1).
5. Configure Positions 6, 7, and 8 (alarms) of each DIP switch per PAR. 2.4.4.
6. Connect wire between I/O mating connector pin Sense (+) and corresponding power supply
V (+) terminal at DC OUTPUT terminal block.
7. Connect wire between I/O mating connector pin Sense (–) and corresponding power supply
V (–) terminal at DC OUTPUT terminal block.
8. Connect short jumper across I/O mating connector Sense (+) pins.
9. Connect short jumper across I/O mating connector Sense (–) pins.
FIGURE 2-8. TYPICAL PARALLEL CONNECTIONS, LOCAL SENSING (EXTERNAL),
EXTERNAL WIRES AND I/O MATING CONNECTOR JUMPERS