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T Series Data Sheet
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Temperature Sensors T
The T Series battery chargers exhibit a cell voltage selector
switch Z to set the required floating charge voltage at 20 °C
directly at the converter. If this Z switch is used, the 2.23 V/cell
sensor types should be selected in any case as a basis, and
the selection criteria are only the temperature coefficient and
the nominal voltage of the battery. For example, if a 24 V
battery is used, which has a cell voltage of 2.23 V and a cell
temperature coefficient of –3.5 mV/K, the sensor type is S24-
2.23-35-02. The setting on the Z switch should be 2.23.
500 Watt AC-DC Converters
For T Series converters without Z selector switch, a sensor
according to both criteria should be selected. In our example it
should be S24-2.23-35-02.
The active temperature sensor T is of robust construction,
mounted into a sealed aluminium tube of 12 mm outer
diameter and 50 mm length. The sensors are waterproof
(IP 66) and high-voltage tested with 1.4 kVDC. Connection
should be done via the colored 3 wire cable to the output of the
converter (Vo+ and Vo – ) and the remote control input i/Vcr (pin
28).
Caution: Wrong connection may damage the sensor and the
+
– Sensor
wires
Sensor
cable
converter.
Note: Battery specific sensors with cell voltages from 2.23 V up to
2.32 V and temperature coefficients from –2 up to –4.5 mV/K per
i/Vcr
white
28
brown
cell or different cable lengths are available upon request.
Note: For installation of batteries, see VDE 510 as well as the
Vo+
Fuse
12
+
–
recommendations of the battery manufacturers.
Vo–
22
green
Battery
Sensor T
Fig. 56
Wiring diagram sensor
Table 24: Type survey temperature sensors T
Nominal battery
voltage [V]
24
24
24
36
36
36
48
48
48
48
48
48
48
Sensor type
S24-2.23-30-02
S24-2.23-35-02
S24-2.23-45-02
S36-2.23-30-02
S36-2.23-35-02
S36-2.27-35-02
S48-2.23-30-02
S48-2.23-35-02
S48-2.23-40-02
S48-2.23-45-02
S48-2.27-30-02
S48-2.27-35-02
S48-2.27-45-02
Cell voltage
[V]
2.23
2.23
2.23
2.23
2.23
2.27
2.23
2.23
2.23
2.23
2.27
2.27
2.27
Temp. coefficient per cell
[mV/K]
–3.0
–3.5
–4.5
–3.0
–3.5
–3.5
–3.0
–3.5
–4.0
–4.5
–3.0
–3.5
–4.5
Cable length
[m]
2
2
2
2
2
2
2
2
2
2
2
2
2
Table 25: Sensor data
Characteristics
Condition
min
typ
max
Unit
T sensor
V cr
V cr td
Sensor temperature range
Control voltage range
Control voltage tolerance
V cr = 5.5 – 11.5 V
Absolute ratings
T sensor = 20 °C
–10
3.9
60
15
±0.1
°C
V
T sensor = 0 – 53 °C
±0.2
BCD20023 Rev AB, 02-Nov-2010
Page 30 of 31
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