Overview Of Inputs And Outputs - Grundfos IO 351 Instrucciones De Instalación Y Funcionamiento

8. 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
L
Connection of phase
conductor
L
N
Connection of neutral
1
conductor
N
PE
Connection to
protective earth
PE
76 DO 1, 2, 3, C
76 DO 1, 2, 3, C
77 DO 1, NO
2
79 DO 2, NO
81 DO 3, NO
53 + 24 V
55 GND
57 AI 1
3A
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.
10 DI 1
12 DI 2
14 DI 3
3A
15 GND
All terminals (except mains terminals) must only be connected to
voltages not exceeding 16 Vrms and 22.6 Vpeak or 35 VDC.
A RS485 A
A RS485 A
Y RS485 GND*
Y RS485 GND*
3C
B RS485 B
B RS485 B
Functional earth
* GND is isolated from other ground connections.
Data
1 x 100-240 VAC ± 10 %, 50/60 Hz
Relay contact, NO.
Maximum load: 240 VAC, 2A
Minimum load: 5 VDC, 10 mA
Supply to sensor. Maximum 50 mA
Input for analog signal, 0/4-20 mA
or 0-10 V
Digital input
GENIbus (internal)
(Fix the screen with a cable clamp.)
Diagram
IO 351
L L
N N
PE
IO 351
76
76
77
79
81
IO 351
53
55
1
2
57
60
IO 351
10
12
14
15
IO 351 CU 351
A A1
Y Y1
B B1
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