Grundfos IO 351 - GENIbus Terminal Connections; PTC Sensor and GND Terminals; Digital Input and Analog Output Terminals

Group Terminal Designation Data Diagram
3C
A RS485 A
GENIbus (internal)
(Fix the screen with a cable
clamp.)
IO 351
A
Y
B
CU 351
A1
Y1
B1
A RS485 A
Y
RS485 GND
1
Y
RS485 GND
1
B RS485 B
B RS485 B
Functional earth
4A
30 PTC 1
Input for PTC sensor or thermal
switch
IO 351
30
32
34
35
PTC
PTC
PTC
32 PTC 2
34 PTC 3
35 GND, PTC
Make jumpers if no PTC sensor or thermal switch is connected.
All terminals (except mains terminals) must only be connected to
voltages not exceeding 16 Vrms and 22.6 Vpeak or 35 VDC.
3B
2
16 DI 4 Digital input
IO 351
D1
GND
AO
-
+
17 GND
18 AO 4 Analog output, 0-10 V
20 DI 5 Digital input
21 GND
22 AO 5 Analog output, 0-10 V
24 DI 6 Digital input
25 GND
26 AO 6 Analog output
42 DI 7
Digital input
44 DI 8
46 DI 9
47 GND
4B
2
36 PTC 4
Input for PTC sensor or thermal
switch
IO 351
36
38
40
41
PTC
PTC
PTC
38 PTC 5
40 PTC 6
41 GND, PTC
Make jumpers if no PTC sensor or thermal switch is connected.
All terminals (except mains terminals) must only be connected to
voltages not exceeding 16 Vrms and 22.6 Vpeak or 35 VDC.
14
English (GB)