Delta MS300 Series User Manual page 37

Chapter 5 Main Circuit TerminalsMS300
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Connect the external brake resistor to +2/B1, B2 terminals of the AC motor drives.
DO NOT connect two ends of the brake resistor directly to DC+/+1 and DC-, +2/B1
to DC- to prevent damage to the drive and to the brake resistor.
When connecting DC+/+1 and DC- in common DC bus applications, refer to
Section 5-2 (Main Circuit Terminal Specifications) for the wiring terminal
specification and the wire gauge information.
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