TFA2-596 - TFA4-1192
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7 - POWER SUPPLY
1 - Composition
The power supply section of the control panel complies with the requirements of the standard EN 54-4. It consists of a primary
power supply (PS - power supply) and a secondary power supply (SD - storage device).
The primary power supply consists of a modular switching power supply, capable of providing 5A/28V direct current.
The secondary power supply consists of two 12V/12Ah batteries connected in series with each other. It is imperative that the
batteries are always two. Never use batteries of different manufacturers, capacities and/or production lots.
Capacity lower than 12Ah, besides reducing the autonomy, distort the resistance values causing possible improper failure signaling.
2 - Mains power LED
In the normal operating state (no active failure), only the green
MAINS POWER
LED is on.
3 - Protection against battery reverse polarity
The power supply section is protected against reverse battery polarity by fuse (F 5A, 250V 5x20mm).
4 - Automatic system failure acknowlegment
With the option enabled, the return to normal operating conditions automatically acknowledges all the noti
fi
cations and removes
the failure noti
fi
cation from the event queue.
With the option disabled, the return to normal operating conditions does not automatically acknowledge all noti
fi
cations.
It is necessary to reset the control panel.
5 - Switch on with battery power only
Control panel switch on with battery power only is normally inhibited. To enable it, insert the JP1 jumper on the CPU board.
Warning:
when mains power is available, it is mandatory to remove the JP1 jumper. If the jumper remains inserted, there is a risk that:
• The automatic battery test provides incorrect results
• The automatic disconnection of the battery in case of deep discharge no longer works
• Power supply is overloaded
TECHNICAL AND FUNCTIONAL SPECIFICATIONS
Power supply
(PS)
Type
5A/28.8V DC switching
Operating voltage
230V AC +10% -15% 50Hz
Maximum consumption
700mA
Maximum current available
I max. (a) 4A
Maximum current available without battery charger
I max. (b) 4A
Batteries
(SD)
Capacity
2x 12V/12Ah
Battery test
Automatic (every 30 minutes)
Charging time
80% 24h - 100% 48h (2x 12Ah batteries)
Cut-off voltage
<18V
Available current for loads
Battery charger
Max. 1A
Self-consumption
200mA
Loops
Max. 500mA (each)
Master Bus
Max. 500mA
Slave Bus
Max. 500mA
Wired outputs
Max. 800mA
Failure notifi cations
Primary power supply failure
See table 1
Secondary power supply failure
See table 2
Battery high impedance
See table 3
Battery charger failure
See table 4
Overvoltage
See table 5
Low battery
See table 6
Discharged battery
See table 7
Summary of Contents for Tecnofire TFA2-596
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