Table of Contents
Model IFP-2000/ECS Installation Manual
7.3
Maximum Number of SLC Devices
The IFP-2000 supports IDP or SD SLC devices. The maximum number of SLC devices per panel is 636. The
number of 5815XL is limited only by the SBUS bandwidth, 636 point count, and 1A SBUS current limit. Device
support is as follows:
IDP Devices - The IFP-2000 supports a total of 636 IDP points. The SLC points can be all sensors or all modules
or any combination of modules and sensors.
or
SD Devices - The IFP-2000 system can support a total of 636 SD SLC detectors and modules, in any
combination.
7.4
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.
7.4.1
Wiring 5815XL 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 IDP devices and 50 ohms for SD devices.
Maximum loop length depends on the wire gauge. See Table 7-1 for IDP and Table 7-2 for SD.
7-3
Table 7-1 Maximum wiring distance for IDP modules
Wire Gauge
22 AWG
18 AWG
16 AWG
14 AWG
12 AWG
Table 7-2 Maximum wiring distance for SD devices
Wire Gauge
22 AWG
18 AWG
16 AWG
14 AWG
Max. Distance for IDP
1200 feet
3100 feet
4900 feet
7900 feet
10,000 feet
Max. Distance for SD
1500 feet
3900 feet
6200 feet
10,000 feet
151430-L8
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Troubleshooting
