Teknoware TKT68C, Installation And Maintenance Instructions Manual

Page: 13 / 64

VOT45; Rev 1.1; EN; 10.12.2014
TKT68C
– Installation and maintenance
13
If battery voltage is below deep discharge limit,
push forced charge button from charger, see
instructions in chapter 5.3.2.
Check that temperature sensor is connected
properly and it is working. Resistance should be
about 2 kOhm. Voltage over sensor should be
about 5 Vdc.
6 RECHARGE
When this LED is flashing, the
battery is recharging but the voltage
has not yet reached the
maintenance voltage.
When this LED is lit, the battery
voltage has reached the
maintenance voltage.
After a power failure the batteries
are first boost charged using a
constant current. The boost
charging and the cyclic charging
normally take 12 hours, after which
the device switches to trickle
charging, i.e. the normal mode. In a
normal mode, the battery voltage is
kept in about 243 V (N = 261 V).
The charging current can be
selected from the charging board by
using a DIP switch.
7 CURRENT
LIMIT
Not in use
8 BATTERY
FAULT
Possible fault in the battery or its
cabling.
This LED can be lit with other LEDs
that indicate the fault more
specifically.
If the battery is disconnected, the
charger doesn’t charge, the battery
fuse is blown or the battery does
n’t
accept charging current, the
following alarms are displayed on
the panel:

Mains operation LED

Battery undervoltage or
overvoltage LED

Battery fault LED

Internal fault LEDs
Battery fuses might be blown.
Refer to the instructions given for the LED that
specifies the battery fault (Battery overvoltage,
Battery undervoltage and Deep discharge).
To reset the possible battery fault alarm, press the
Reset / Test button.
9 EARTH
LEAKAGE Possible earth leakage inside the
central battery unit.
Earth leakage detection will check if positive pole
of the battery has leakage to the body of the
central battery unit.
If there is not earth leakage, the earth leakage
sensor might be broken.