VISTA-40Installation and Setup Guide, 3-12

VISTA-40 Installation and Setup Guide

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 will go into alarm

A trouble on zone 97 prevents a partition from being armed, unless all polling loop zones on that partition are bypassed.

INPUT POLLING LOOP


CONTROL PANEL	RPM	RPM

INPUT LOOP LIMITS:

•64 mA MAX. LIMIT CURRENT TO 64mA ON ANY INDIVIDUAL WIRE RUN.

•NO MORE THAN 55 DEVICES MAY BE USED.

•NO INDIVIDUAL WIRE RUN CAN EXCEED:

COMBINED INPUT AND EXTENSION LOOP LIMITS:

•NO MORE THAN 55 DEVICES COMBINED.

•TOTAL LENGTH OF ALL WIRE RUNS ON BOTH LOOPS COMBINED CANNOT EXCEED 5200 FT. (2600 FT. IF USING UNSHIELDED WIRE IN CONDUIT, OR IF USING SHIELDED WIRE).

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 3-17 and 3-18, to follow.

Be sure to include the total current drawn on the polling loop when figuring the total auxiliary load on the panel’s power supply.

	EXTENSION POLLING LOOP			TO

4297


		RPM	RPM	OTHER
				RPMS

EXTENSION POLLING LOOP LIMITS = SAME AS INPUT LOOP

GAUGE	LENGTH
#22	650 FT
#20	950 FT
#18	1500 FT
#16	2400 FT

• TOTAL LENGTH OF ALL WIRE RUNS COMBINED CANNOT	_011-V0
EXCEED 5200FT. (2600FT. IF USING UNSHIELDED WIRE).	_loop
	polling

Figure 3-17: Polling Loop Connections Using One 4297 Extender Module

•DO NOT CONNECT 4297 MODULES IN SERIES (i.e., DO NOT CONNECT ONE MODULE'S EXTENSION LOOP TO ANOTHER MODULE'S INPUT LOOP.)

4297


CONTROL PANEL	INPUT	PO	LLING LOOP

4297

COMBINED INPUT AND EXTENSION LOOP LIMITS:

•NO MORE THAN 55 DEVICES COMBINED ON THE INPUT LOOP AND EXTENSION LOOP #1. NO MORE THAN 55 DEVICES COMBINED ON THE INPUT LOOP AND EXTENSION LOOP #2.

•TOTAL LENGTH OF ALL WIRE RUNS ON THE INPUT LOOP AND EXTENSION LOOP #1 COMBINED CANNOT EXCEED 5200 FT. (2600 FT. IF USING UNSHIELDED WIRE IN CONDUIT, OR SHIELDED WIRE). TOTAL LENGTH OF ALL WIRE RUNS ON THE INPUT LOOP AND EXTENSION LOOP #2 COMBINED CANNOT EXCEED 5200 FT. (2600 FT. IF USING UNSHIELDED WIRE IN CONDUIT, OR SHIELDED WIRE).

EXTENSION POLLING LOOP #1

RPM

EXTENSION POLLING LOOP #2

RPM

polling_loop-010-V0

Figure 3-18: Polling Loop Connections Using Multiple Extender Modules

NOTE: The input loop limits stated in Figure 3-17apply to Figure 3-18as well.