Honeywell VISTA-128BPT - Bypassing Protection Zones; Using the 6 BYPASS Key

Section 3 – Installing the Control
3-13
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 annunciation
is desired, program the zone as type 05.
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 system 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-128BPT/VISTA-250BPT.
Be sure to include the total current drawn on the polling loop when figuring the total auxiliary load on the panel’s
power supply.
CONTROL PANEL
INPUT POLLING LOOP
EXTENSION POLLING LOOP
TO
OTHER
V-PLEX
DEVICES
INPUT LOOP LIMITS:
EXTENSION POLLING LOOP LIMITS = SAME AS INPUT LOOP
• 128 mA MAX. LIMIT CURRENT TO 64mA ON ANY
INDIVIDUAL WIRE RUN.
•
NO MORE THAN 64 DEVICES MAY BE USED.
NO INDIVIDUAL WIRE RUN CAN EXCEED:
•
GAUGE LENGTH
#22 650 FT
#20 950 FT
#18 1500 FT
#16 2400 FT
• NO MORE THAN 119 DEVICES COMBINED.
polling_loop_001-V0_BPT
COMBINED INPUT AND EXTENSION LOOP LIMITS:
V-PLEX V-PLEX
V-PLEX V-PLEX
4297
Figure 3-15: Polling Loop Connections Using One 4297 Extender Module
CONTROL PANEL
EXTENSION POLLING LOOP #1
4297
COMBINED INPUT AND EXTENSION LOOP LIMITS:
•
NO MORE THAN 119 DEVICES COMBINED ON THE INPUT LOOP AND EXTENSION
LOOP #1. NO MORE THAN 119 DEVICES COMBINED ON THE INPUT LOOP AND
EXTENSION LOOP #2.
4297
INPUT POLLING LOOP
•
DO NOT CONNECT 4297 MODULES IN
SERIES (i.e., DO NOT CONNECT ONE
MODULE'S EXTENSION LOOP TO
ANOTHER MODULE'S INPUT LOOP.)
polling_loop-002-V0_BPT
EXTENSION POLLING LOOP #2
V-PLEX
V-PLEX
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.