Grundfos RSI - External +24 V Supply; DC Power Connection

In this case, the AC contactor can also be used to
separate the drive from mains automatically when the
AC supply goes down. For this, it is mandatory to
have a separate control relay on the AC side to detect
supply voltage. This relay can be used to force
contactor to switch off. The contactor auxiliary contact
should be connected into the drive digital input
configured in P3.5.1.60, to tell contactor status.
4.11.4 Overvoltage category
The overvoltage category of the AC drive is Category
III.
4.12 External +24 V supply
Using external supply can be used to keep control
energized when mains power is down. System
software version FW0072V030 or newer should be
used.
4.13 DC power connection
The external DC switch must comply with Australian
regulations, particularly with AS 60947.3:2018.
RSI A-C drives
3AC
PE
PE
PES
1
4
2
DC+
3
DC-
L1 L2 L3
DC-DC+R+R-
U/T1 V/T2 W/T3
TM083244
Example of the power connections: A/B
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English (GB)