Built-in PID feedback control, process control utilising the PID loops. With the keypad, built-in parameter copy function from one drive to another. failure rate: < 1%, just the same as other world-class traditional brands, such as Siemens, ABB, Emerson, Schneider, Rockwell Automation (Allen-Bradley), Lenze, Parker, Yaskawa, Mitsubishi, Omron authorized CE, issued by ECMG delivery lead time: 1-3 days With audit of NVLAP. NVLAP Lab code: 200068-0. ISO/IEC 07025:1999, ISO 9002:1994 supply to REGAL, Ingersoll Rand, Foxconn, Tata Group... Voltage range: 200 VAC - 240 VAC (180 VAC - 260 VAC): 200 V, 220 V, 240V 380 VAC - 480 VAC (323 VAC - 528 VAC): 380 V, 400 V, 415 V, 440 V, 460 V, 480 V 525 VAC, 575 VAC 690 VAC - 790 VAC (587 VAC - 793 VAC) 1140 VAC (960 VAC - 1300 VAC) Power rating: 0.4 KW ~ more than 3000 KW (0.5 hp to more than 4000 hp) PID closed loop control.