Hunter-Pro Series & Captain 8 Installation Guide
3.2.1 Interfacing expanders & keypads on the BUS
PIMA's remote expanders has two terminal blocks for connecting to the BUS braid: "lower"
and "upper", front look. Both has four terminals, numbered 1-4. When the BUS overall length
is up to 500m, the connection is done via the "lower" terminals; see Diagram 5.
To extend the BUS over 500m, connect the first peripheral to the "upper" terminals, that serve
as a buffer and enable to extend the BUS; see Diagram 6.
Diagram 5. One BUS, up to 500m
Diagram 6. Multiple BUS’s, over 500m
BUS
Control panel
ExpanderKeypad
Keypad
Expander
Expander
Control panel
Expander
Keypad
Keypad
Expander
Expander
BUS #1
BUS #2
Expander
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