Low Voltage Operation - Nidec Power Module Frame 12 Power Installation Manual

Safety information
Figure 4-2 Location of the 24 Vdc power supply connection
4.6

Low voltage operation

With the addition of a 24 Vdc power supply to supply the control circuits, the drive is able to operate from a low voltage DC supply with a range from
24 Vdc to the maximum DC volts. It is possible for the drive to go from operating on a normal line power supply to operating on a much lower supply
voltage without interruption.
Going from low voltage operation to normal mains operation requires the inrush current to be controlled. This may be provided externally.
If not, the drive supply can be interrupted to utilize the normal soft starting method in the drive.
To fully exploit the low voltage mode of operation, the under voltage trip level is now user programmable. For application data, contact the supplier of
the drive.
The working voltage range of the low voltage DC power supply is as follows:
Minimum continuous operating voltage:
Minimum start up voltage:
Maximum over voltage trip threshold:
56
Product information Mechanical installation
26 V
32 V
415 V
Electrical Installation
Unidrive M Frame 12 Power Installation Guide
Technical data
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