Grundfos MAGNA3 Instructions Manual page 11

Analog input
IN
24V
Vcc Signal
SENSOR
24V 24V 24V IN IN 24V IN IN
S/S NC NO C
M M
A I
Digital input Relay 1
Vcc Vcc Signal Vcc Signal Vcc Signal Signal
SENSOR SENSOR SENSOR SENSOR
S/S S/S S/S S/S NC NO C NC NO C NC NO C
M M M M M M M M
A I A A I I A I
OPERATION
OPERATION OPERATION OPERATION
Use C and NC for fault signals
as this enables serial connections
of more relays and detection
of signal cable defects.
20
NC NO C L
Relay 2 Power
NC NO C NC NO C NC NO C NC NO C NC NO C L L L L
ALARM
OPERATION ALARM ALARM ALARM ALARM
RCD/RCCB
L N
RCD/RCCB
RCD/RCCB RCD/RCCB RCD/RCCB
L L N L N L N N
21