Grundfos SE - Page 12

Sensor wiring diagrams
1
2
3
4
5
6
7 8
9
10
+t°
+t°
+t°
A
B
K
J
TM082723
Sensor connection, standard version
Pos. Description
A 3 × PTO
B Moisture switch (motor top)
K Leakage switch
J 3 × PTC
Cable screening must be connected to the ground. To connect the leakage switch to SM113 module, use resistor
kit 92726268. The resistor converts the digital signal from the leakage switch (Terminal 4, 5 and 6) must be
converted to analog 4-20 mA signal. The resistor kit must be connected as follows:
1. Connect Sensor wire "4" (common point of leakage switch) to SM113 Terminal "3".
2. Connect Sensor wire "5" (leakage switch lower position: 4-6 mA = "OK" signal) to "R1" of the resistor kit.
3. Connect Sensor wire "6" (leakage switch upper position: 16-18 mA = "Alarm" signal) to "R2" of the resistor
kit.
4. Connect the common end of the resistor kit to Terminal "4" of the SM113 module.
12
English (GB)