Notifier AFP-200 Installation Manual

Installation Wiring a Signaling Line Circuit (SLC)
46 AFP-200 PN 15511:H2 10/14/2002
2.9.8 Wire Requirements for a Four-wire SLC
Measuring Loop Resistance for a Four-wire SLC
The total DC resistance of the SLC pair cannot exceed 40 ohms. Measure DC resistance
as shown in Figure 25. For detailed UL wiring requirements, refer to Appendix F.
1. Disconnect the SLC Out and SLC Return at the control panel.
2. Short the two leads of SLC Return.
3. Measure the resistance across the SLC Out leads (Figure 25).
Figure 25 Meter Leads for Measuring a Four-wire SLC
Measuring Total Wire Length for a Four-wire SLC
The total length of wire (12 AWG) in a four-wire SLC cannot exceed 10,000 feet (3048
m). Figure 26 identifies the output and return loops from SLC terminal TB5 on the
CPU:
Figure 26 Measuring the Wire Length – Four-wire SLC
SLC Out
SLC Return
T-Tapping is not allowed
on a four-wire SLC.
CPU
SLC A (loop return)
SLC B (output loop)
no connection
TB5
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Notifier AFP-200 Specifications

General

Control Panel Type	Addressable Fire Alarm Control Panel
Auxiliary Power Output	24 VDC, 500 mA
Operating Temperature	32°F to 120°F (0°C to 49°C)
Display	80-character LCD
Power Supply	120 VAC, 60 Hz
Capacity	198 addressable devices
Notification Appliance Circuits	2
Relay Contacts	3 (Form-C)
Relative Humidity	93% non-condensing