HST HP101U, Installation And Operation Manual

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2.4 Input Zones Circuits
The control panel has 4-16 zone input circuits. The maximum loop resistance limit for each input circuit is 100
ohms. All field wiring of each zone is supervised for opens and ground faults. Both conditions are visually and
audibly annunciated.
Each zone is a Initiating Device Circuit (IDC) designed to accept any normally-open contact devices and
conventional 2-wire, 24 volt smoke detectors.
All zones may be configured for general fire alarm applications.
Max 30 conventional detectors in one zone.
Four-wire smoke detectors may be connected to any zone. Resettable power is provided via RESETABEL DC24V
Terminal. Refer to the Device Compatibility Document for a list of compatible smoke detectors.
It is allowable to mix an assortment of device types (i.e. smoke detectors, heat detectors, pull stations, etc.) on any
zone.
2.5 Input Supervisory Appliance
Circuits
Any switch or push button can be connected in supervisory
terminal IN1, IN2.
Normal Close (NC) Alarm : In the normal the switch that
connect to the IN1 and IN2 is closed, and the INT1 and INT2
has DC12V, when the switch open and the IN1 or IN2 without
DC12V, then there is a supervisory alarm.
Normal Open (NO) Alarm : In the normal the switch that
connect to the IN1 and IN2 is opened, and the INT1 and INT2
has not DC12V, when the switch close and the IN1 or IN2 has
DC12V, then there is a supervisory alarm.
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N O A L A R M
N C A L A R M