Wiring/Addressing Rpm Devices - ADEMCO VISTA-32FB Installation And Setup Manual

VISTA-32FB Installation and Set-Up Guide

Wiring/Addressing RPM Devices

All devices on the polling loop must be wired in parallel to the [+] and [-] polling loop
terminals of the control panel (28 and 29). You can wire from device to device, or have
multiple branches connected directly to the control panel in a star configuration, as shown in
Figure 7-1.
Although each polling loop device is wired in parallel, each device has its own unique zone
number (or group of zones if it is a zone expansion device). On some devices, this is
determined by the setting of DIP switches. Other devices have a built-in unique serial
number that must be enrolled into the control as the zone number desired. Set up the
polling loop as follows:
1. Run wires to each device on the polling loop. No individual wire run may exceed the
lengths given in the table to follow. In addition, no more than 64mA may be drawn on
any individual wire run. When a star configuration is used, the total length of all wire
runs combined cannot exceed 4000 ft. (2000 ft. if using unshielded wire in conduit or
shielded wire). Twisted-pair is recommended for all normal wire runs.
When running polling loop wires, they must not be run within 6" of AC power, telephone, or
intercom wiring. Since the polling loop is carrying data between the control panel and the
devices, interference on this loop can cause an interruption of this communication. The polling
loop can also cause outgoing interference on the intercom or phone lines. If this spacing cannot
be achieved, shielded wire must be used. (Note that the maximum total wire length supported is
cut in half when shielded wire is used.)
2. Wire each device to the polling loop, making sure to use correct polarity when making
connections (refer to the device's instructions). If serial number devices are being used
and the control is to enroll each serial number automatically, wire no more than 24 of
these devices to the control at a time. Then power up and program them (as described in
Zone Programming in the # 93 Menu Mode Programming section of the Quick Start
Guide) before connecting the next 25 devices. Leave previously enrolled devices
connected.
3. If you intend to manually enter the serial numbers through the keypad or through
Compass downloading software, all the devices may be connected before powering up to
program.
4. Note the polling loop devices that have DIP switches on them. Set each device's DIP
switches for the zone number to which it is being assigned. When setting addresses,
refer to the device's instructions.
Certain polling loop devices, such as the 4193SN and 4191SN, do not have DIP switches.
Instead, they have embedded serial numbers that must be enrolled by the control during
Zone Programming in #93 Menu Mode (refer to the Quick Start Guide).
7–2
Maximum Polling Loop Wire Runs
Wire Gauge Max. Length
#22 gauge 650 feet
#20 gauge 950 feet
#18 gauge 1500 feet
#16 gauge 2400 feet