Yaskawa CIMR-E7U4037 Variable Frequency Drive

The Yaskawa CIMR-E7U4037 Varispeed E7 AC Drive is a 3‑phase variable frequency drive designed to control motor speed and torque in HVAC and industrial systems, using V/f control optimized for variable-torque loads to improve energy use. It supports HVAC and industrial motor speed control in applications such as air handling units, cooling towers, pumps, and fans, and is commonly used for retrofit or replacement to maintain reliable operation of legacy drive systems. Key specifications include input voltage 380–480 VAC (3‑phase) at 50/60 Hz, output current about 77–85 A, and a 60 HP class power rating. The drive comes in a NEMA 1 / industrial panel mount enclosure and offers optional building automation communications (e.g., Modbus, BACnet). Status: Discontinued by the manufacturer. Common replacements include CIMR-F7Z4037, CIMR-AU4A0031FAA, and CIMR-AC4A0031FAA.