HST Addressable fire alarm MN-300, Руководство по эксплуатации

Страница: 21 / 26

Page 19
IV. Wiring diagram

System diagram
Note: See the wiring diagram of detectors and modules for the wiring of the detectors, the
interface module, the monitoring module and the control module.

Connecting terminal diagram:
Notes:
1
）
The BELL terminal is used for bell drive output. When there is no fire alarm in the system, the BELL
terminal will output 0V; when there is a fire alarm in the system, it will 24V; and when the system
is muted, it will stop outputting.
2
）
The 24VK terminal is a resetting the power and power up the equipment needing another power
supply to recover from a power failure. When the system is recovering, the 24VK terminal will output 0V
in a short time and the said equipment will be powered up again.
3
）
Terminals ON, COM and OFF are the three contacts of the relays. When the system is in normal
operation, terminals COM and OFF are connected; and when the system has a fault, terminals COM and
ON are connected. After the Reset key is pressed, terminals COM and ON will be disconnected.
4
）
Terminals L+ and L- are the two connecting terminals for the circuit bus.