Overview Of Inputs And Outputs; Or Damage To The Equipment - Grundfos CU 351 Montage- Und Betriebsanleitung

10. Overview of inputs and outputs

DI: Digital input
DO: Digital output
AO: Analog output
AI: Analog input
NC: Normally closed contact
NO: Normally open contact
C: Common
Position numbers, see fig. 2.
Pos. Terminal Designation
Connection of phase
L
conductor
Connection of neutral
1 N
conductor
Connection to
PE
protective earth
A1 RS-485 A
Y1 RS-485 GND
2 B1 RS-485 B
Functional earth
A RS-485 A
Y RS-485 GND*
B RS-485 B
3**
Functional earth
10 DI 1
11 GND
12 DI 2
13 GND
4
14 DI 3
All terminals (except mains terminals) must only be connected to voltages
not exceeding 16 V
Ethernet RJ45
5
External computing devices connected to the Ethernet connection must
comply with the standards IEC 60950 and UL 60950.
6 GENIbus
50 +24 V
51 AI 1
53 +24 V
7 54 AI 2
57 AI 3
58 GND
All terminals (except mains terminals) must only be connected to voltages
not exceeding 16 V
Data
1 x 100-240 VAC ± 10 %, 50/60 Hz
GENIbus (internal)
(Fix the screen with a cable clamp.)
External GENIbus (not standard)
(Fix the screen with a cable clamp.)
Digital input
and 22.6 V or 35 VDC.
rms peak
Service connection
Supply to sensor. Maximum 30 mA
Input for analog signal,
0/4-20 mA or 0-10 V
Supply to sensor. Maximum 30 mA
Input for analog signal,
0/4-20 mA or 0-10 V
and 22.6 V or 35 VDC.
rms peak
Diagram
CU 351
L
L
N
N
PE
CU 351 IO 351
A1 A
Y1 Y
B1 B
CU 351
A
Y
B
10
11
12
13
14
50
1
51
53
2
54
3
57
58
13