Grundfos IO 351 - Overview of Inputs and Outputs; Terminal Designations and Diagrams

9. Overview of inputs and outputs
DI: Digital input
DO: Digital output
AO: Analog output
AI: Analog input
NO: Normally open contact
C: Common
Group Terminal Designation Data Diagram
1
L
Connection of phase
conductor
1 x 100-240 VAC ± 10 %, 50/60
Hz
IO 351
L
N
L
N
PE
L
N
Connection of neutral
conductor
N
PE
Connection to protec-
tive earth
PE
2
76 DO 1, 2, 3, C
Relay contact, NO.
Maximum load: 240 VAC, 2A
Minimum load: 5 VDC, 10 mA
IO 351
76
76
-77
-79
-81
76 DO 1, 2, 3, C
77 DO 1, NO
79 DO 2, NO
81 DO 3, NO
3A
53 + 24 V
Supply to sensor. Maximum 50
mA
IO 351
53
55
57
60
1
2
55 GND
57 AI 1
Input for analog signal, 0/4-20
mA or 0-10 V
60 AI 2
All terminals (except mains terminals) must only be connected to
voltages not exceeding 16 Vrms and 22.6 Vpeak or 35 VDC.
3A
10 DI 1
Digital input
IO 351
10
12
14
15
12 DI 2
14 DI 3
15 GND
All terminals (except mains terminals) must only be connected to
voltages not exceeding 16 Vrms and 22.6 Vpeak or 35 VDC.
13
English (GB)