Grundfos SE - Page 17

1
2
3
4
5
6
7 8 9 10 11 12 13 14 15 16 17 18
A
B
C
E G H I
K
J
+
+t°
+t°
+t°
-
TM085737
Sensor connection, version V1 Ex without Dry Running Switch (SL pumps)
Pos. Description
A 3 × PTO
B 2 × Moisture switch (motor top)
C Pt100 (lower bearing)
E Common earthing for sensors
G Pt100 (upper bearing)
H Pt100 (stator winding)
I Vibration sensor
K Leakage switch
J 3 × PTC
Cable screening must be connected to the ground. Sensor wire 15 is the control wire for service. If not used,
then the wire end must be insulated. To connect the leakage switch to SM113 module, use resistor kit 92726268.
The resistor converts the digital signal from the leakage switch (Terminal 9, 10 and 11) must be converted to
analog 4-20 mA signal. The resistor kit must be connected as follows:
1. Connect Sensor wire "9" (common point of leakage switch) to SM113 Terminal "3".
2. Connect Sensor wire "10" (leakage switch lower position: 4-6 mA = "OK" signal) to "R1" of the resistor kit.
3. Connect Sensor wire "11" (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.
17
English (GB)