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3 maximum number of devices, 4 wiring requirements for slc devices, 1 wiring slc in style 4 (class b) configuration – SilentKnight 5700 User Manual

Page 66: Maximum number of devices -3, Wiring requirements for slc devices -3, 1 wiring slc in style 4 (class b) configuration -3

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Model 5700 Installation and Operation Manual

151295

5-3

5.3

Maximum Number of Devices

The 5700 supports SK or SD devices on one5700ystem. The maximum number of devices per system varies
depending on device protocol. Device support is as follows:

SK Devices–A 5700 system can support a total of 50 SK detectors and 50 SK modules.

OR

SD Devices–A 5700 system can support a total of 50 SD SLC detectors and modules, in any combination.

5.4

Wiring Requirements for SLC Devices

The following information applies to all SLC devices. Refer to the section that describes the type of device you
are installing for details.

5.4.1

Wiring SLC in Style 4 (Class B) Configuration

No special wire is required for addressable loops. The wire can be untwisted, unshielded, solid or stranded as
long as it meets the National Electric Code 760-51 requirements for power limited fire protective signaling
cables. Wire distances are computed using copper wire.

Maximum wiring resistance is 40 ohms for SK device and 50 ohms for SD devices.

Maximum loop length depends on the wire gauge.

Table 5-1 Maximum wiring distance for SK Modules

Table 5-2 Maximum wiring distance for SD Devices

Wire Gauge

Max. Distance for SK

22 AWG

1200 feet

18 AWG

3100 feet

16 AWG

4900 feet

14 AWG

7900 feet

12 AWG

10,000 feet

Wire Gauge

Max. Distance for SD

22 AWG

1500 feet

18 AWG

3900 feet

16 AWG

6200 feet

14 AWG

10,000 feet