PA7300 Instruction Manual - TECO-Westinghouse Motor Company

(35) Energy-saving coefficient reduction ratio (Cn-59)In order to prevent over excitation in the low frequency area, this constant reducesoutput voltage at low frequency. Set in the reduction ratio at 6Hz. According, to thisvalue, output voltage is reduced with the reduction ratio (Cn-59) when output voltageof 15Hz or less is 6Hz or with the reduction ratio obtained by linear interpolation ofreduction ratio (100%) at 15Hz.Reduction ratio100%Cn-59615 60HzOutput frequency(36) Motor code (Cn-60)By setting this code, energy-saving coefficient is set to Cn-58 when a TECO motor isused. This motor code is the same as that used for motor constant setting (Sn-01)By setting the capacity and initializing by Sn-01, the same code is written to Cn-60.Therefore, when the inverter and motor has the same capacity, setting is not needed.When exclusive use motor or other manufacturer's motor is used and its motorconstant is not known or when the inverter and motor has the different capacity, try toset the mother code corresponding to the motor voltage and capacity to Cn-60.The motor codes are shown in the table below.220V class440V classCn-60MotorCapacityCn-58Initial valueCn-60MotorCapacityCn-58Initial value09 25 57.87 29 25 115.740A 30 51.79 2A 30 103.580B 40 46.27 2B 40 92.540C 50 38.16 2C 50 76.320D 60 35.78 2D 60 71.560E 75 31.35 2E 75 67.200F 100 23.10 2F 100 46.2010 125 14.85 30 125 41.2231 150 36.2332 175 33.8833 215 30.1334 250 29.2035 300 27.1336 350 24.4537 400 21.7638 500 16.3862