20AC060A0AYNACNN

The 20AC060A0AYNACNN is a variable frequency drive from Allen-Bradley. The drive operates with input power from a 3-phase power supply. However, in some special cases, the Underwriters Laboratories (UL) lists the drive to operate with a single-phase power supply. Note that a single-phase power supply delivers only 50% of the 3-phase rated current. Also, special guidelines must be sought when interfacing the 20AC060A0AYNACNN with generator input power. The drive features 3 terminal blocks which are used to interface the 20AC060A0AYNACNN with the motor and other external devices. The terminal blocks feature terminals for motor power connections, signal connections, and terminating shield connections. For the power terminal block, the 20AC060A0AYNACNN supports a minimum wire size of 0.8 millimeters and a maximum wire size of 10 millimeters.

Additionally, the 20AC060A0AYNACNN’s power terminal block accommodates a maximum torque of 1.7 N-m but the recommended torque is 1.4 N-m. The drive provides recommended entry points for both the incoming line wiring and the motor wiring. However, if the provided wire entry points are not enough for the required wiring, the plate found on the cable entry points is detachable to allow for more space. When wiring the 20AC060A0AYNACNN, the ground impedance should be in-line with the recommendations from the local and national regulations concerning electrical codes. When the drive is installed inside a cabinet, the cabinet needs to also be grounded. Note that for safety reasons, the grounding should utilize a common ground point which also connects to the factory’s steel joist.