1: Sk Modules - Honeywell 6808 Installation And Operation Manual

SK, SD and SWIFT™Wireless SLC Device Installation
7.5.1 SK Modules
The SLC can be programmed to operate in SK mode. While shielded wire is not required, it is recommended that all SLC wiring be
twisted-pair to minimize the effects of electrical interference. Use Table 7.3 to determine the specific wiring requirements for the SLC.
Wire Requirements
RECOMMENDED: Twisted-unshielded pair, 12
to 18 AWG (3.31mm
maximum per length of Style 6 & 7. 50 ohms per
branch maximum for Style 4 loop.
Untwisted, unshielded wire, in conduit or
outside of conduit.
Twisted, shielded pair
Note:
• Shields must be isolated from ground
• Shields should be broken at each device
Note:
Maximum total capacitance of all SLC wiring (both between conductors and from any conductor to ground)
should not exceed 0.5 micro farads.
Figure 7.1 and Figure 7.2 show how wire length is determines for out and back tap and T-Tap style wiring.
76
12,500 ft. (3,810 m)
2 2
to 0.82 mm ). 50 ohms, 9,500 ft. (2895.6 m)
6,000 ft. (1,828.8 m)
3,700 ft. (1,127.76 m)
5,000 ft. (1,528 m)
3,700 ft. (,127.76 m)
5,000 ft. (1524 m)
3,700 ft. (1,127.76 m)
Table 7.3 SLC Wiring Requirements for SK modules
Figure 7.1 Calculating wire run length for a simple out and back tap
Distance in Feet (meters)
6808 Manual — P/N LS10146-001SK-E:C 09/28/2017
Wire Type
2
12 AWG (3.31 mm )
2
14 AWG (2.08 mm )
2
16 AWG (1.31 mm )
2
18 AWG (0.82 mm )
2
12 to 16 AWG (3.31 mm to 1.31 mm
18 AWG (0.82 mm)
2
12 to 16 AWG (3.31 mm to 1.31 mm
2
18 AWG (0.82 mm )
2
)
2
)