This video provides details on connection for parallel DC systems using the control techniques multi-axis kits for use with the control techniques Digitax HD series.
For more information, visit the Control Techniques website.
http://acim.nidec.com/drives/control-techniques
Digitax HD Servo Drive Series.
http://acim.nidec.com/drives/control-techniques/products/servo-drives/digitax-hd