Grundfos MAGNA3 25-80 Installation And Operating Instructions Manual page 11

3.9.3 Connections in the control box, terminal-connected versions
Analog input
IN
24V
Vcc Signal
Sensor
Digital input
S/S
M M
A I
Start/stop
On/off
timer
Fig. 13 Example of connections in the control box of terminal-connected versions
Use C and NC for fault signals as this enables serial
connections of more relays and detection of signal
cable defects.
For further information on digital and analog inputs, see sections
7.9.3 Digital inputs and 7.9.4 Analog
For information on relay outputs, see section
Relay 1 Relay 2
NC NO C NC NO C
Operation Alarm
input.
7.9.2 Relay outputs.
Power
L
RCD/RCCB
L N
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