August-2015
Page 5
Color: Grey.
Current consumption (normal): 410 mA max(500 loop devices connected).
Current consumption (alaram): 1670 mA max(500 loop devices connected, 18
sounders & bells connected).
3.
Components
3.1.
Power circuits
HST-HP201-2 contains a switched mode power supply module producing 27VDC from
230VAC/50Hz main input source. Main panel board is protected with 5A/20 mm fast
response glass fuse located at the lower right side of the board. Care must be taken when
changing this fuse in case of failure. Same rating must be mounted in the board to avoid panel
damage. There is another fuse located inside the main terminal block which holds 230VAC
input terminal located at the upper right part of the panel.
Also panel has terminals to connect 2 X 12V/7Ah sealed lead acid batteries for panel
backup power in case of failure of main input power. Main panel board has a charging circuit
to charge the batteries. Charging circuit is automatically disconnected as soon as batteries are
fully charged to save batteries life time. Main power & batteries are monitored from main
power failure and batteries disconnection failure.
There is a place at the middle of the main board for 3V coin battery. It is only used to
keep panel date & time saved even if main input power and batteries are not connected. If
coin battery is removed, panel date and time will be set to its default values (Monday 01-Jan-
2007 12:00 AM).