Electrical Supply; External Class 2 Supply; Group Installation And Modular Drive Systems - Nidec Commander C200 Power Installation Manual

6.8

Electrical supply

The drives are suitable for use on a circuit capable of delivering not more than 10,000 RMS
Symmetrical Amperes, at rated voltage when protected by fuses as specified in the Installation
Instructions.
Some smaller drives are suitable for use on a circuit capable of delivering not more than 10,000 RMS
Symmetrical Amperes, at rated voltage when protected by circuit breakers as specified in the
Installation Instructions. Refer to section 4.3 Ratings on page 51 for further information.
6.9

External Class 2 supply

The external power supply used to power the 24 V control circuit shall be marked: "UL Class 2". The
power supply voltage shall not exceed 24 Vdc.
6.10

Group Installation and Modular Drive Systems

Drives with DC+ and DC- supply connections, with 230 V or 480 V supply voltage rating, are UL
approved for use in modular drive systems as inverters when supplied by the converter sections:
Mentor MP25A, 45A, 75A, 105A, 155A or 210A range manufactured by Nidec Industrial Automation.
Alternatively, the inverters may be supplied by converters from the Unidrive-M range manufactured
by Nidec Industrial Automation.
In these applications the inverters are required to be additionally protected by supplemental fuses.
Drives have not been evaluated for other Group Installation applications, for example where a single
inverter is wired directly to two or more motors. In these applications, additional thermal overload
protection is needed. Contact Nidec Industrial Automation for further details.
Unidrive M100 to M400 Frame 1 to 4 Power Installation Guide
Issue Number: 5
105