SILENT KNIGHT 4720 Installation Manual download pdf (Page 13)

Regency

Model 4724 Control Expander Installation Manual (P/N 150596-02, Rev. A) Revised 8/98

3.2 Zone Expanders

For more information on wiring zone expanders, see the 4720 Installation Manual (P/N

150476).

In some situations, zone expanders operate differently with a 4724 system than they do with a

4720 only. The instructions below describe the differences (or refer to additional sources of

information).

3.2.1 Current Zone Expander Models

The 4115 Serial Zone Expander and 4126 Hardwire Zone Expanders are the models currently

available for use with the 4720. Each of these products has its own installation manual. The

4115 Installation Manual (P/N 150648) is shipped with the product; the 4126 Installation

Manual (P/N 150860) is part of the Regency Technical Documentation binder.

3.2.2 Older Zone Expander Models

The following information about obsolete zone expander models is retained for installers who

need to troubleshoot or repair an existing system.

Model 4110 Serial Zone Expander

4110 zones using 4100 or 4101 sensors can be supervised, but the NO EOL option must be

selected as YES since the sensors have no end-of-line resistor. Two 4110 expanders can be

used for up to 120 additional serial zones.

Model 4125 Multiplexed Zone Expander

The 4125 is enhanced by the 4724 to allow zones to be wired like 4720 internal zones.

Normally closed zones must have either a 15 K end-of-line resistor in series with the contact or

they must be programmed as “NO EOL:YES.”

Zones can be programmed as normally open and normally closed for UL type burglary zones.

Zones programmed in this manner must have a 15 K end-of-line resistor and must be pro-

grammed as “NO EOL:NO.” These zones may also have day supervision selected.

Two 4125 zone expanders can be used for up 128 added zones. Zones on the second expander

should be wired starting at Zone #1, the actual zone number will be offset by the number of

zones on Expander #1 plus the number of internal zones (actual zone # = # of zones on

Expander 1 + # of internal zones).

Model 4130 RF Zone Expander

4130 zones must be programmed as normally open on the 4724. The transmitters are then indi-

vidually programmed as normally open or closed.

Two RF zone expanders can be used under special circumstances. Typically this would be

used in installations where the two receivers are isolated by some type of barrier wall that

blocks signals from the other expander.

NOTE Using more than 64 total transmitters is not recommended.

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SILENT KNIGHT 4720 Installation Manual Page 13