Planning the Installation
Page 21
In alarm: 140mA
COM-DATA-4G
Quiescent: 15 mA
In alarm: 240mA
Wired expander
20mA (no sounder connected)
Wired PIR
15mA
KEY-FKPZ keypad
Quiescent: 25mA
In alarm: 65mA
i-kp01 keypad
Quiescent: 30/40/60mA (backlight off/on/bright respectively)
In alarm: 45/45/65mA (backlight off/on/bright respectively)
KEY-KPZ01,
KEY-KP01 or
KEY-K01 keypad
Quiescent: 35mA (backlight off, no external proximity reader)
In alarm: 65mA (backlight on, external proximity reader fitted)
KEY-RKBS two-way
keypad base station
35mA (buzzer off)
SDR-WEXT
external siren/strobe
Quiescent: 35mA
In alarm: 225mA
Worked example
The following shows a simplified example of checking power availability.
Device (quiescent)
Current
Control unit PCB (i-on30R+)
80mA
COM-SD-PSTN
20mA
10 x PIRs at 15mA each
150mA
1 x wired expanders
20mA
2 x KEY_FKPZ at 25mA each (backlights off)
50mA
Siren
35mA
Total
355mA
During an alarm, the current consumptions are:
Device (in alarm)
Current
Control unit PCB (i-on30R+)
90mA
COM-SD-PSTN
30mA
10 x PIRs at 15mA each
150mA
1 x wired expanders
20mA
2 x KEY_FKPZ at 65mA each
130mA
Siren
225mA
Total
645mA
Since the control unit's power supply can provide 820mA (excluding battery charging), the
above shows that the power supply is able to power the system during an alarm (645mA).
The total amp-hours required for the battery for Grade 2 is:
(0.355A x 11.5h) + (0.645A x 0.5h) = 4.41Ah
A fully-charged, 7Ah battery can provide the charge required by the above example to
meet Grade 2 requirements.