Used Electrol K-Trol C-MH-18-790-CM1 90/180V DC Motor Control.  Tested and Confirmed Working.

120/240VAC 50/60Hz Input Plug Selectable.

0-90VDC 10.6A Max Output.  ***Heat Sink Required if 3/4HP or more load.  

1/50-2HP Rated.

Requires 5K Ohm Speed Potentiometer (Not Included).

240VAC Input to run a 180VDC Motor Max Current 11.6A.

Permanent Magnet of Field Wound Motors this does have Field Connections.

Mount to metal surface / Heat Sink.  Fan Cooling Suggested.

Scuffs Scratches Oxidation and Wear.

Manual Included.

Compare to similar drives from Minarik, KB, and Leeson