n
Thermal Probe
The Thermal probe
KST
(accessory item) will optimize
the backup battery charge process, by regulating the
charge voltage in accordance with the temperature of
the backup battery.
Work carefully through the following instructions to in-
stall the Thermal probe (refer to the figures 2 and 3 on
page 16 and 17):
1.
Connect the probe to the connector on the power
supply.
2.
Attach the probe to the backup battery, in such a
way as to obtain optimum heat transfer.
3.
Measure the Probe temperature.
4.
Using the graph in Figure 25 and/or Table 7, find
the value (in accordance with the battery tempera-
ture) that the Switching Power supply output volt-
age will be based on.
5.
Using the trimmer , adjust the voltage on the termi-
nal board to the required value.
+
If you are connecting a KST thermal probe to a
BAQ15T12
Power
Supply,
ensure
that
the
BAQ15T12 on-board Jumper is inserted.
For further information, refer to the Insert in the KST
package.
ABSOLUTA Plus
INSTALLING
39
TEMPERATURE (°C)
-10
-5
0
5
10
15
20
25
30
35
40
45
50
VOLTAGE (V)
14.5
14.4
14.3
14.1
14.0
13.9
13.7
13.6
13.5
13.4
13.3
13.2
13.1
Table 7
Switching Power Supply Output Voltage chart. To find the Output Voltage using the chart: — select the near-
est value to the Probe temperature on the
TEMPERATURE (°C)
row; read the corresponding value on the
VOLTAGE
(V)
row; adjust the Output Voltage of the Switching Power Supply to the indicated value. For example, if the Probe tem-
perature is 22 °C, the Output Voltage of the Switching Power Supply must be set at 13.7 V.
-10
-5
0
5
10
15
20
25
30
35
40
45
50
13,0
13,5
14,0
14,5
VOL
T
A
GE
(V)
TEMPERATURE (°C)
a)
13,7
22
Figure 25
Switching Power Supply Output Voltage graph. To find the Output Voltage using the graph: — indicate the
Probe temperature on the
TEMPERATURE (°C)
axis; draw a line from the temperature value point up to the curve
a)
;
draw a line from the intersection point across to the
VOLTAGE (V)
axis; adjust the Output Voltage of the Switching
Power Supply to the resultant value. For example, if the Probe temperature is 22 °C, the Output Voltage of the
Switching Power Supply must be set at 13.7 V.
