Thermal Probe - Bentel Security KYO 320 Installation Manual

n Thermal Probe
This Control panel has an on-board connector 31 for a
KST thermal probe (accessory item). The probe will op -
timize 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 (refer
to the figure on page 10):
1. Connect the probe 9 to the connector 62 (PTC) on
the Switching Power supply.
2. Attach the probe to the backup battery, in such a
way as to obtain optimum heat transfer.
3. Connect the connector of backup battery 53 on
the PCB.
4. Measure the Probe temperature.
5. Using the graph in Figure 25 and/or Table 3, find
the value (in accordance with the battery tempera -
ture) that the Switching Power supply output volt -
age will be based on.
6. Using the trimmer 54, adjust the voltage on the ter -
minal board 55 to the required value.
14,5
14,0
13,7
13,5
13,0
-10
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.
TEMPERATURE (°C)
VOLTAGE (V) 14.5
Table 3 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.
30
a)
-5 0 5
-10 -5 0 5
14.4 14.3 14.1
10 15 20 22 25
TEMPERATURE (°C)
10 15 20
14.0 13.9 13.7
30 35 40 45
25 30 35 40
13.6 13.5 13.4 13.3
50
45 50
13.2 13.1