ENERGY COUNTERThe ACS310 drive ranges 0.5-30 hp (0.37-22 kW) and features built-in PID controllers, used to vary the drive’s performance, in response to changes in external data. A pump and fan control (PFC) feature modulates the speed of the main pump or fan and brings any auxiliary pumps or fans on-line as necessary. The drive is designed to manage switching between pumps or fans. In addition, the drive includes soft pump and fan control (SPFC). Energy savings can be monitored using the built-in energy counter, which displays energy savings in kWh or in local currencies.