Figure 3-15: Polling Loop Connections Using One 4297 Extender Module; Figure 3-16: Polling Loop Connections Using Multiple Extender Modules - Honeywell VISTA-250FBPT Installation And Setup Manual

Polling Loop Supervision
A short on the polling loop is indicated by a trouble on zone 997 and reports as a trouble condition only.
If a device on the polling loop fails (the panel cannot "see" that device), the system displays a trouble condition for all
zones on that device. If the panel is armed when a device fails, and the zone is a burglary zone, the zone will go into
alarm.
A trouble on zone 997 prevents a partition from being armed, unless all polling loop zones on that partition are
bypassed.
Using the 4297 Polling Loop Extender
The 4297 Polling Loop Extender may be used to provide additional polling loop current, to extend the polling loop wire
run length, and/or to provide individual electrically isolated polling loops. Refer to Figures 3-15 and 3-16, to follow.
DO NOT use the 4197 Polling Loop Extender module with the VISTA-128FBPT/VISTA-250FBPT.
Be sure to include the total current drawn on the polling loop when figuring the total auxiliary load on the panel's
power supply.

Figure 3-15: Polling Loop Connections Using One 4297 Extender Module

Figure 3-16: Polling Loop Connections Using Multiple Extender Modules

NOTE: The input loop limits stated in Figure 3-15 apply to Figure 3-16 as well.
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