The module is a digital output module that is equipped with 4 opto-triac outputs using phase-angle control. L and N are fed to the module for zero-crossing detection.
Allen Bradley 20G11ND022AA0NNNNN PowerFlex 755 AC Drive, with Embedded Ethernet/IP, AC Input with DC Terminals, 480V AC, 3PH, 22A, 15HP Normal Duty, 10HP Heavy Duty, Open Type, Air Cooled, Frame 2