Figure 3-16: Polling Loop Connections To The Vista-40 - Honeywell ADEMCO VISTA-40 Installation And Setup Manual

Model Number Type
7500 Single Technology Glassbreak Detector
9500 Dual Technology Glassbreak Detector
4209U Universal Group Zoning Module
4193SN Serialized 2-Zone Expander
4293SN Serialized 1-Zone Expander
4190SN Serialized 2-Zone Expander
998MX Serialized PIR
• The 4208 must be mounted either inside the
U L
control panel's cabinet or in a separate
enclosure that has a tamper-supervised cover.
• The 4190WH right loop must not be used, and
the left loop must be EOLR-supervised.
• The 4278 right loop cannot be used.
• The 4194 is not UL Listed.
• The 4297 must be powered from the control
panel's Auxiliary Power Output or from a UL
Listed supplementary power supply.
• The 7500 and 9500 detectors are not UL Listed.
•
For new polling loop installations, always use
twisted pair wiring. In many cases, existing
non-twisted pair wiring may be used, but it is
more susceptible to interference from other
sources, and may be problematic in installations
with long wire runs or in high noise
environments.
•
Always locate polling loop wiring at least six
inches (15cm) of AC power, telephone, or
intercom wiring. The polling loop carries data
between the control panel and the devices;
interference on this loop can cause an
interruption of 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.)
• 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 you are using unshielded wire
in conduit or shielded wire).
IMPORTANT NOTE: If the installation exceeds or deviates
from these parameters, refer to the application note on the
Honeywell website for additional information. To access
the application note:
1. Go to the honeywell.com/security website
2. Click the Honeywell Security & Custom Electronics link.
3. Click the Commercial link.
4. Click the Documentation link.
5. Click the V-Plex Application Note.
Section 3 - Installing the Control
To install polling loop devices, perform the following steps:
Step Action
1 Select devices from the list of compatible
devices shown previously.
2 Set the DIP switches in the device (if
required). Refer to the device's instructions
for the DIP Switch Tables.
3 Mount each device in the desired location.
Refer to the device's instructions.
4 Run wires from the control panel to each
device on the polling loop (see Figure 3-16).
No individual wire run may exceed the
lengths shown in the following table.
Maximum Polling Loop Wire Runs
Wire Gauge
#22 gauge
#20 gauge
#18 gauge
#16 gauge
5 Wire each device to the polling loop, making
sure of the correct polarity (refer to the
device's instructions).
NOTE: If you are using serial number
devices, and intend to enroll each device
through the keypad automatically, wire no
more than 25 of these devices to the
control at a time. Then power up and
program them before connecting the next 25.
Leave previously enrolled devices connected.
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.
21 22 23
POLLING LOOP RATING:
128mA MAXIMUM
Figure 3-16: Polling Loop Connections to the
VISTA-40
Max. Length
650 feet
950 feet
1500 feet
2400 feet
24 25
+ -
4190
TO RIGHT LOOP
RPM
4192SD
SMOKE
4278
PIR
3-11