Document #15140 Rev.G 01/02/02 P/N 15140:G
23
Input Circuits
2.4
Input Circuits
The control panel has five zone input circuits. The maximum loop resistance limit for each is 100 ohms. All field
wiring of each zone is supervised for opens and ground faults. Both conditions are visually and audibly annunciated
as well as communicated to a Central Station.
Each zone is a Style B Initiating Device Circuit (IDC) designed to accept any normally open contact device and con-
ventional 2-wire, 24 volt smoke detectors. Each zone is power-limited to 7.26 mA in standby and 42 mA in alarm.
Zone 3 may also be configured as a Style D Initiating Device Circuit.
Note: All five initiating zones may be converted to Style D (Class A) by using a CAC-5F Class A Converter module.
Refer to Figure 2-17, “CAC-5F Style D Converter,” on page 32.
Zones 1-5 may be programmed as listed below. The factory default is 2-wire smoke detector for all zones:
• 2-wire smoke detector (factory default)
• Pull station
• Normally open contact device(s)
• Supervisory
• Supervisory, autoresettable
Zone 3 may also be programmed as:
• Waterflow, silenceable
• Waterflow, nonsilenceable
Note: A maximum of five waterflow devices may be used on zone 3 per NFPA 72.
Four-wire smoke detectors may be connected to any zone. Resettable power is provided via TB4, Terminals 3 and 4.
It is allowable to mix an assortment of device types (i.e. smoke detectors, heat detectors, pull stations, etc.) on any
zone. This is not recommended, however, since specific and detailed reports will not be possible. For example, the
report of general fire alarm versus pull station fire alarm or smoke detector fire alarm.
Refer to the Fire•Lite Device Compatibility Document for a list of compatible smoke detectors.
FIGURE 2-5:
Typical Initiating Device Circuit Connections
Style D Initiating Device Circuit
(supervised and power-limited)
Style B Initiating Device Circuit
(supervised and power-limited)
4.7K ohm, ½ watt P/N 71252 UL listed
UL listed compatible 2-wire smoke detector
UL listed compatible 2-wire smoke detector
Manual Pull Station
Manual Pull Station
Heat Detector
Heat Detector
Dummy load all unused circuits with 4.7K ohm
ELR P/N 71245, across B+ and B-.
MS-5024UD