ADEMCO VISTA-128B Guia de preparacion Pagina 50

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VISTA-128B Installation Instructions
7-4
CONTROL
PANEL
4297
MODULE
Notes: - Do not use the 4197 module.
- Refer to 4297 instructions for more detailed installation information.
The limits shown below supercede the limits described in the 4297 instructions.
- Do not connect 4297 modules in series.
- - -
RPM
- - -
Input Polling Loop
Extension Polling Loop
RPM RPM
RPM
Extension Loop Limits:
- Same as for the input polling loop.
Input Loop Limits:
- 128mA max. No more than 64mA
on any individual wire run.
- No individual wire run may exceed:
Gauge Length
#22
#20
#18
#16
650 ft.
950 ft.
1500 ft.
2400 ft.
- Total length of all wire runs combined cannot
exceed 4000 ft. (2000 ft. if using unshielded
wire in conduit or shielded wire).
Combined Input and Extension Polling Loop Limits:
- No more than 119 devices combined.
- Total length of all wire runs on all loops combined can-
not exceed 6400 ft. (3200 ft. if using unshielded wire in
conduit or shielded wire)
Figure 7-2: Polling Loop Connections Using One 4297 Extender Module
Figure 7-3. Polling Loop Connections Using Multiple Extender Modules
Note: The input loop limits stated in Figure 7-2 apply to Figure 7-3 as well.
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