Manual –TC.GXS
2016-09-16
12 / 43
Template V02.11
Explanation of the figures
10
U
Rail
Voltage curve on the rail lines in the ranges of power-on, power-off and
charging.
U
Rail
will be measured by the sense input.
11
I
Preset
Preset max. charge current in TopCon.
12
External voltage monitoring via Sense interface X104
The external sense interface can be used for the directly monitoring of the
load voltage. Line loss voltage will be considered at the controlling, if the
sense function is enabled ith the Software TopControl.
13
Internal sense voltage
The internal Sense voltage U
Sense RPP
will be measured dircetly on the current
bare via the PTC resistors
-14-
in case of a
not connected sense interface
X104
.
The measurement is necessary to get the voltage value before the DC relay
will be closed
.
14
PTC resistors
The positive temperature coefficent resistors PTC are used as connection
resistors. In case of open power path, the total voltage will be applied over the
PTC resistors. The resistors protect the sense lines.
Tab. 9
Explanation of the figures.
Power on
In case of U
Preset
≠ U
Batt
:
At power on the DC relay (switch) is opened.
At first, the TopCon device tunes-in to battery voltage U
Batt
-3-
to avoid high inrush currents.
The voltage value must be stable for 100 ms (timer)
-4-
.
Stable means that the voltage of the TopCon device
-3-
does not
exceeded ± 1% of the battery voltage.
In that case the DC relay closes the line. The mechanical closing of the
DC relay needs a short time
-8-
before the battery dis-/charging starts.
The controller changes to current control mode.
•
In case of U
Preset
> U
Batt
:
The charge current I
Charge
produces a voltage ramp
-5-.
The battery will charge with a controlled current I
Charge
-9-
until
the voltage reaches the voltage U
preset.
The charge current
decreases continuously until the battery is fully charged.
•
In case of U
Preset
< U
Batt
: (I
Discharge
= -I
Charge
)
The discharge current I
Discharge
produces a voltage ramp
-5-.
The battery will discharge with a controlled current I
Discharge
-9-
until the voltage reaches the internal voltage U
preset.
The charge current decreases continuously until the battery is
empty.
