Grundfos IO 111 Montage- Und Betriebsanleitung Seite 20

Pos. Terminal Description
PE Earth
GND for supply
-
voltage
3
Plus for supply
+
voltage
A RS485 A
5 Y RS485 GND
B RS485 B
I1 Earth
I2 Not connected
9 Terminal for
measurement of
I3
stator insulation
resistance
Terminal for
P1 sensors in the
pump
Terminal for
supply voltage
P2
to sensors in
the pump
Terminal for
10 P3 sensors in the
pump
Terminal for
supply voltage
P4
to sensors in
the pump
Terminal for
P5 sensors in the
pump
20
Data Function
Earth
0 VDC
24 VAC ± 10 %
Supply voltage to the IO 111
24 VAC ± 10 %
24 VDC ± 10 %
Bus input
RS485 communication connection
0 V
(9600 baud)
Bus input
Earth
The insulation resistance between
-
stator windings and earth is measured.
The measurement is only correct when
the motor is stopped.
CAT II 600 V
Measurement voltage: 10 VDC.
Sensor input
Thermal switch or PTC sensor
15 V
according to DIN 44081 and 44082.
Sensor input
P1 to P5 are used for the connection of
sensors in the pump. All sensors in
contact with phase voltage must be
double insulated according to
15 V
EN 61010-1.
Sensor input
Diagram
+
A
Y
B
L1
L2
L3
I3
I1
P1..P5