MA-AL-T272-01-01 Manual TUL272 eng rev1
Rev.1 Page 1 of 4
POWER SUPPLY TUL 272
Installation Manual
FUNCTIONAL FEATURES
The power supply unit is composed by a linear feeder, with function of limitation of constant current,
an analogic control circuit and a microcontroller supervision circuit.
The power supply is divided into 3 terminal outputs protected by the relative fuses.
- BAT : where buffer battery will be connected
- OUT 1 , OUT 2 , : for generic loads
Battery is charged with constant current (27,6 V @ 25
°
C)
with environmental limitation of current.
Maximum current supplied by feeder is 2 A (1 A for load and 1 A for battery).
LED in control card are close to respective fuses (see picture n. 1) to indicate:
- Interrupted fuse for each output (DL2, DL8, DL3 )
- Tension presence (RETE)
A microcontroller system, checks all possible anomalies, providing a FAILURE signal in the following
situations:
1. Output fuses interrupted
2. Low battery tension (<21 Vdc)
3. Over tension to output (> 29 Vdc)
4. Tension absence RETE
Both Failure and Power absence signals are located in a connector on the supervision and control
card.
In case of a power supply failure or power absence, feeding for logic and control circuits is provided
by battery.
ELECTRICAL FEATURES
- Feeding tension : 230 Vac +10% / -15%
- Frequency : 50 Hz
- Output tension : 27,6 Vdc ( -15% / +10%)
- Minimum output tension: 19,6 Vdc (in absence of voltage and with exhausted battery)
- Max output current: 2 A max.
- Adjustment on full charge power variations (+10% / -15%) : best than 1 %
- Adjustment on load variations (0 to 100%) : best than 1%
- Residual ripple on full load: 30mVpp (a 230 Vac )
- Fuses : [ battery:T 4 AL] [ OUT 1 , OUT 2 :T 1,6 AL: ] [ AC Power supply :T 1,6 AL]
[ Overtension: T 4 AL ]
Protection against battery polarity inversion: diodes
