Checking The Pt1000 Temperature Sensors - Kingspan Temperature differential controller Installation And Operating Instructions Manual

Tab. 5: Error messages
13.3

Checking the Pt1000 temperature sensors

Warning
Risk of death by electrocution! Before opening the device, make sure that all cables
leading to the device have been disconnected from the mains power and cannot be
unintentionally reconnected to the mains power.
1. Remove the terminal cover.
2. Disconnect the temperature sensor.
3. Measure the resistance of the temperature sensor with an ohmmeter and compare
with the following table. Small deviations are acceptable.
4. Mount the terminal cover.
Temperature – Resistance assignments
Temperature [°C]
Resistance [Ω]
Temperature [°C]
Resistance [Ω]
Tab. 6: Temperature-resistance assignment with Pt1000 temperature sensors
742.892 | 11.50
Output R1 is overloaded, the pump
connected to output R1 flashes.
Cause: The permissible values for R1
specified on the type plate have been
permanently exceeded, the output has
been switched off.
A short-circuit exists at output R2, the
pump connected to output R2 flashes.
Possible causes:
• The pump is faulty.
• Wiring fault
Output R2 is overloaded, the pump
connected to output R2 flashes.
Cause: The permissible values for R2
specified on the type plate have been
permanently exceeded, the output has
been switched off.
-30 -20 -10
882 922 961 1000
80 90 100
1309 1347 1385 1423
0 10 20
1039 1078 1117
110 120 130 140
1461 1498 1536
Check the electrical
data of the pump,
replace pump if
necessary. R1 is auto-
matically switched on
again.
• Check the pump.
• Check the wiring
to R2.
Check the electrical
data of the pump,
replace pump if
necessary. R2 is auto-
matically switched on
again.
30 40 50 60
1155 1194 1232
150 160 170
1573 1611 1648
EN
70
1271
180
1685
49