B A +
B A +
B A +
B A +
Controls
Power
Communication Power
Control Bus
Set #2
Control Bus
Set #3
Control Bus
Set #4
The first control bus set in the master panel connects directly to the RPC controller using the provided cables with 8-pin molex
connectors. The second control bus set and all secondary panels, where applicable, connect to the multi-panel expander board (MPE).
To connect bus strips to the MPE you will need either one 6-conductor, 600V jacketed, 18-14 AWG tray cable or two 4-conductor, 600V
jacketed, 18-14 AWG tray cables per control bus set. Each strip requires 4 conductors but the DC power conductors can be daisy chained
within the panelboard. Connect control bus strips to the MPE as follows.
1. At the MPE, terminate the Left Bus B, Left Bus A, Right Bus B, Right Bus A, Common (–) and 24VDC (+) in the screw-terminal
header for that control bus strip from left to right.
2. Connect the cable to the control bus strips as shown in the diagram.
If using one 6-conductor cable, at each control bus set, strip the cable sheath back approximately 20 inches. Cut the conductors
for Left Bus B, Left Bus A, – and + down to approximately 4 inches and terminate them in the Left Bus screw-terminal header from
left to right. Terminate the remaining two conductors in the Right Bus B and Right Bus A positions of the Right Bus screw-terminal
...continued from front
Left Control Bus Right Control Bus
Bus Set #2 2 3
Bus Set #3 4 5
Bus Set #4 6 7
header. Cut two lengths of 18 AWG wire to install jumpers
from Left Bus – and + to Right Bus – and +. Right Bus will
not operate without these jumpers installed to provide
24VDC power and common.
3. Address the secondary address selectors as follows:
Left Bus B
Left Bus A
Right Bus B
24v DC
Common
Right Bus A
Secondary
address
selector
- +
