2. Technical Description 9751 Installation Guide
Page 10 11976798
Standby battery (not supplied) 12V rechargeable lead-acid, gel-type battery.
Low battery voltage cutoff = 10V.
Recommended manufacturers: Yuassa, Yucel
or Fiamm.
Note: Grade 1 and 2 compliance requires the control unit to continue for a
minimum period of 12 hours on a standby battery. To calculate the
minimum capacity battery to achieve this requirement, determine the
total current taken by external devices and the control unit and multiply
by 12. Cooper Security Ltd recommend that you fit at least a 7Ah battery.
Note that a 17Ah battery cannot fit inside the case.
Outputs
OP 1, 2, 3 Open-collector transistor outputs, 500mA,
12VDC, negative applied.
LS Supports two parallel-connected, externally
mounted loudspeakers for internal sounder or
EE tones: minimum speaker impedance 16Ω.
AUX 500mA, 12VDC minimum, 13.8VDC
maximum, ripple ±2% maximum.
Communications outputs 12V logic outputs, negative applied in alarm
(positive removed), 50mA maximum.
Inputs
TR Tamper return for Bell
Tellback/Remote reset** +12V applied to operate reset.
Line Fault input** +12V applied to indicate line failure.
** These inputs appear as pins on the connector for the plug-by
communicator. See page 33.
Fuses
The control unit uses fast-acting polyswitch fuses for overcurrent protection:
F1 – 12V AUX output F2 – Battery output
F3 – Bus 1
Note: Polyswitch fuses automatically reset when the load is entirely removed.
The control unit uses a T-250mA mains fuse.
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