5.3.1 Galvanic separation
Double-insulated sensors for all measurements
ensure electrical safety. Furthermore, a galvanic
separation is incorporated inside the IO 113.
5.3.2 Measurement of insulation resistance
IO 113 measures the insulation resistance between a
stator winding and earth:
•
Resistance above 10 megaohms is appropriate.
•
Resistance between 10 and 1 megaohms causes
a warning.
•
Resistance below 1 megaohm causes an alarm.
5.4 SM 113, optional
SM 113 is designed and used for the collection and
transfer of additional sensor data. SM 113 works
together with IO 113 with a communication module,
product number 98097390. See the figure below.
PE
T1 T2
G1 A1 G2 A2 K1 K2 R1 R2
D1 D2 D3 D4 D5 D6 D7 D8
P1 P2 P3 P4 P5
A Y B
I1 I2 I3
ON
DIP
1 2 3 4 5 6 7 8 9 10 11 12
1 2 3 4 5 6 7 8 9 1011 121314
C
S
IO 113
SM 113
TM051966
IO 113 and SM 113
Pos.
Description
C
Power line communication using Grundfos
GENIbus protocol
S
Sensor inputs
SM 113 can collect data from the following devices:
•
current sensors, 4-20 mA *
•
Pt100 **/ Pt1000 *** thermal sensors.
* Vibration sensor, water-in-oil (WIO) or water-in-air
(WIA) sensor
** Maximum three Pt100 sensors
*** Maximum four Pt1000 sensors.
5.5 Switches and sensors
Do not let the pump run dry.
Install an additional level switch to ensure that the
pump is stopped in case the primary stop level switch
is not operating.
A pump includes the following switches and sensors:
•
three thermal switches in the stator windings
•
a moisture switch in the top cover
•
a moisture switch in the stator housing
•
three thermal protectors in the stator housing:
- an analog Pt100 sensor in the stator winding
- an analog Pt100 sensor in the upper bearing
- an analog Pt100 sensor in the lower bearing
•
an analog WIO sensor in the oil chamber.
1
2
3
4
5
6
7
8
9
1
TM032802
Control cable
Pos.
Description
1
Yellow and green
A
B
M
M
T
T
T
P
L1 L2 L3
C
WIO
S
IO 113
SM 113
O
TM046067
Sensor connections, SM 113 outside the motor
25
English (GB)
Summary of Contents for ST-55-520
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