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2017 Page 46 5IN2413 B
Installing Zone Expanders
16-Zone Expanders, 8-Zone Expanders, and Single-Zone-Expanders all enable you
to expand the number of wired zones --for example, non-bus (“relay”) detectors
used in the system.
While a Single Zone Expander connects only one single relay detector to a bus line
(each individual relay detector requires a dedicated Single Zone Expander), each
16-Zone Expander supports up to 16 relay detectors (and likewise each 8-Zone
Expander supports up to 8 relay detectors). See Step 4: Connecting Relay Detectors,
page 45.
NOTE: When connecting Single Zone Expanders directly to a Bus Zone Expander,
connect the Single Zone Expander’s bus wires (red, green, yellow, black) to the
respective terminals on the Bus Zone Expander that are marked TO DEVICE
ProSYS Plus provides selectable, variable EOL (end-of-line) zone termination
resistance options, compatible for RISCO relay detectors, as well as those of other
manufacturers (for example, if performing a retrofit installation). Termination
resistance is defined for each single-zone, 8-zone and 16-zone expander used in the
system (as well as for each relay detector they support).
• To install zone expanders, refer to their packaged installation instructions.
Defining Zone Termination Resistance
A zone’s termination (end-of-line) resistance can be defined for relay detectors (not
wireless or bus detectors), and it involves first physically wiring resistors (if not
already in place) at installation, and then afterwards selecting the zone’s
termination resistance option at the keypad during installer programming.
See Defining Zone Termination Resistance using the “Resistance” Option, page 67.
NOTE: For relay detectors wired to zone expanders, during installer programming
you separately define their individual termination resistance values, and also
define it for the zone expanders.
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