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SWIFT Wireless SLC Devices
7.4 SWIFT Wireless SLC Devices
The WIDP-WGI Wireless Gateway acts as a bridge between a group of wireless fire devices and an SLC loop on the IFP-75. It is powered by
the SLC loop or by a regulated, external 24VDC UL-listed power supply. The available wireless devices include a photo detector, a
photo/heat detector, a fixed-temperature heat detector, a rate-of-rise detector, and a monitor module. For updated details about the wireless
devices, the System setup and the operation, refer to the SWIFT Smart Wireless Integrated Fire Technology Manual P/N:LS10036-000FH-E.
7.5 Maximum Number of Devices
The IFP-75supports IDP, SK, SD, or SWIFT devices on one IFP-75 System. The maximum number of devices per System varies depending
on the device protocol. The device support is as follows:
•
IDP Devices: An IFP-75 System can support a total of 75 IDP detectors and 75 IDP modules. For a maximum of 150 points.
•
SD Devices–An IFP-756700FCP-75 System can support a total of 5075 SD SLC detectors and modules, in any combination.
•
IDP SWIFT Wireless Devices: A SWIFT Gateway System supports up to 50 devices: 1 SWIFT Gateway and up to 49 (in any
combination) wireless detectors and monitor modules. Multiple Gateways can be used. For additional information, refer to the SWIFT
Manual P/N LS10036-000FH-E.
7.6 Wiring Requirements for SLC Devices
The information in this section pertains to SLC devices. Refer to the section that describes the type of device you are installing for details.
7.6.1 Wire Sizing for Internal SLC
The SLC requires the use of a specific wire type, depending on the mode of operation, to ensure proper circuit functioning. Wire size should
a minimum of 18 AWG and a maximum of 12 AWG wire. The wire size depends on the length of the SLC circuit. It is recommended that all
wiring be twisted-pair to minimize the effects of electrical interference.
7.6.2 Wiring Requirements for IDP and SK Modules
The IFP-75 SLC can be programmed to operate in IDP mode. Use Table 7.4 to determine the specific wiring requirements for the SLC.
RECOMMENDED:
Twisted-unshielded pair, 12 to 18 AWG (3.31mm
40 ohms, maximum per length of Class A and Class X. 40 ohms
per branch maximum for Class B 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: The maximum total capacitance of all SLC wiring (both between the conductors and from any conductor to ground) should not exceed
0.5 micro farads.
.Figure 7.1 and Figure 7.2 show how the wire length is determined for the out and back tap and T-Tap.
Note:
SD -Device max. Loop Resistance = 50 Ohms
IDP-Device max. Loop Resistance = 40 Ohms
SK -Device max. Loop Resistance = 40 Ohms
IFP-75/IFP-75HV Installation/Operation Manual — P/N LS10147-001SK-E:D 06/25/2021
Wire Requirements
to 0.82 mm
2
Table 7.4 SLC Wiring Requirements for IDP Module
Figure 7.1 Calculating wire run length for a simple out and back
IDP, SK, SD and SWIFT SLC Device Installation
Distance in Feet (meters)
12,500 ft. (3,810 m)
).
9,500 ft. (2895.6 m)
2
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)
Wire Type
2
12AWG (3.31mm
)
2
14AWG (2.08mm
)
2
16AWG (1.31mm
)
2
18AWG (.082mm)
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
)
69
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