User manual
AKKU
TEC
2412 VdS
Document
page 9 / 16
0812G01B02-160422.docx
4
Start-Up
The power supply is switched on by the activation of the mains voltage (230 V AC).
DANGER
Check the correctness of the connections prior to the first activation!
Establish electrical connections only in de-energized status!
In case of non-observance, touching live parts can result in death or serious injury.
Two seconds after connection to the mains the connected consumers are supplied. The charge of the lead
accumulators is carried out as well. The charging time is increased if simultanously to the charging current a
high load current is needed, too.
The first lead accumulator test is performed after 60 seconds.
4.1
Display and messages
Four LEDs are installed to indicate the the status of the unit:
Display
Significance
operation
LED green illuminates:
- as long as the output voltage is present.
mains-OK
LED green illuminates:
- at mains operation U
E
> U
Emin
- and T
int
< T
intmax
Bat-OK
LED green:
- illuminates:
at U
Bat
> 21.6 V DC
- goes out:
- at U
Bat
< 21.6 V DC
- if the accumulator circuit is interrupted (test interval 1 min)
- if the lead accumulators are reverse poled
- if the Ri accumulator internal resistance is too high (test interval 10 min.)
Error
LED yellow illuminates:
- at back-up operation
- if the accumulator circuit is interrupted
- if the lead accumulator is reverse poled
- if the accumulator internal resistance is too high
- in case of a fuse blow on the fuse board (if activated)
(The LED
’s are coupled to the signal contacts which have the corresponding names.)
5
Operation
5.1
Mains operation
Mains operation is indicated with the illumination of the green LED
Mains-OK
and the green LED
Operation
.
5.2
Back-up operation
By removing the mains voltage respectively by the underrun of the minimum input voltage, the unit switches
over to back-up operation. The back-up operation is indicated with the illumination of the LED O
peration
. The
LED
Mains-OK
does not illuminate.
5.3
Deep discharge protection
Deeply discharged lead accumulators can cause irreversible damage. The final discharge voltage specified by
the manufacturer must never be underrun. In case of a mains failure, the external energy supply continuously
monitors the discharge of the lead accumulators. If the final discharge voltage is reached, the consumers are
automatically disconnected from the lead accumulators by load rejection.
