Power supply options
The NEMA terminal board is available with an isolated power supply option. This has a 24 V isolated
power supply (maximum output load 80 mA), U1, fitted. As shown below, U1 completely separates the
terminal 24 V and 0 V from the pump internal supplies.
This may be used if the sensor requires an isolated supply or has a 4-20 mA output which cannot be used
with the ground connected load resistor within the pump.
22V
0VA
ISO.24V
0VA
U1
22V
0VA
U1
22V
ISO.0V
1.
2.
1. Without isolated power supply option (N Module) 2. With isolated power supply option (F Module)
m-730en-en-08.1
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