Model 4175 Operation; Expansion Zones; Model 4110 Zone Expander; Connecting The Smartsensors - Regency 4720 Installation Manual

Regency ® Model 4720 Control/Communicator Installation Manual (P/N 150476, Rev. A)

Model 4175 Operation

11.4.2
The 4720 will always try to use Phone Line 1 unless it is bad. If Phone Line 1 is bad, the Model
4720 automatically chooses Line 2. If the Model 4720 fails to communicate on its first attempt (on
either line), it will automatically switch to the alternate phone line. It will repeat this sequence until
it reaches a receiver or the total number of attempts (chosen during programming) is exceeded.

Expansion Zones

12
Note: Do NOT program 24-hour expansion zones as entry delayed. The reason is that 24-hour zones selected as entry
delayed do not bypass correctly during the entry time or when they are in alarm.

Model 4110 Zone Expander

12.1
The Model 4110 is a serial 2-wire zone expander that must be used in conjunction with the Model 4100 or
4101 SmartSensors. Using the Model 4110 can add up to 60 expansion zones to the Model 4720. The 4110
has two (2) separate serial loops and each loop can have up to 30 sensors. The sensors can be programmed
for normally open or normally closed contacts. The 4110 looks at individual sensor pairs (one on each loop)
to determine if an alarm condition is present. Each sensor in the loop gets its own identification number.
The 4110 must be mounted inside of the Model 4720 cabinet.
Note: This device can be used in burglary applications only, and must be connected with shielded cable with one
end of the shield connected to ground (Terminal 6) and the other end left unconnected. Wire gauge must be
18 (or larger). Maximum wire length is 1000 feet.
To connect the Model 4110 to the Model 4720, follow the steps below:
1. Slide the Model 4110 printed circuit board into the plastic board mount located inside of the Model
4720 cabinet. Make sure that the terminal screws and 12-pin connectors are positioned towards the
Model 4720 PC board.
2. Connect one end of the 12-wire conductor to either one of the 12-position polarized connectors on the
Model 4110.
3. Connect the other end of the 12-wire conductor to one of the 12-position polarized connectors labeled
XBUS on the Model 4720. Run the 12-wire conductor around the Model 4720 PC board. Do NOT run
the conductor over or under the PC board.
4. If you will be using another model that must be connected to the XBUS bus on the Model 4720, it may
be connected to the extra 12-position connector on the Model 4110.

Connecting the SmartSensors

12.1.1
Figure 12.1.1a shows how the two (2) serial loops are connected to the Model 4110. Wiring runs
should not exceed 1000 ft. For UL installations, each loop must be run in a separate 2-wire cable to
eliminate interference. If you use shielded cable, connect one end of the shield to circuit ground
(4720 Terminal 6), and leave the other end disconnected.
To avoid equipment damage, ALWAYS observe correct
polarity when wiring the SmartSensors.
CAUTION:
40
Revised 10/98