Altivar 16 AC Drive Configuration and adjustment of parameters with options Volts/frequency ratio to the motor Function Adjustment of volts/frequency ratio, a function of the input power, the motor and the application. Applications All constant and variable torque applications with or without overspeeding. Adjustment parameters V UnS UnS: Nominal motor voltage (V) FrS: Nominal motor frequency (Hz) tFr: Maximum drive output frequency (Hz) tFr 40 200 FrS 40 200 f (Hz) Adjustments UnS: - ATV16U GG M2 drives: 208-220-230-240, preset to 230, - ATV16U G G N4 drives: 380-400-415-460, preset to 400 if FrS = 50, or 460 if FrS = 60. FrS: 40 to 200, preset to 50 (or 60 using switch on the Altivar 16).
Adjustment of FrS overrides selection made with switch. tFr : 40 to 200, preset to 50 if FrS = 50, or 60 if FrS = 60. Note: The maximum value of FrS and tFr (200 Hz) varies in the following cases: - Drive with variable torque card VW3-A16202 : maximum value is 70/80 Hz - Drive with high speed motor card VW3-A16203 : maximum value is 400 Hz. Type of volts/frequency ratio Function The volts/frequency ratio is adapted to suit the application in order to optimize performance. Applications Standard applications at constant torque (machines requiring normal torque at low speed): ratio n Variable torque applications (pumps, fans):
ratio P Machines requiring high torque at low speed, machines with fast cycles, special motors: ratio L Adjustment parameters V UnS UFr f (Hz) UFt : Type of volts/frequency ratio UFr : Correction to the volts/frequency ratio by modification of the IR compensation tFr FrS Adjustments UFt: n, L or P, preset to n UFr: 0 to 100, preset to 20 From 20 to 0: decrease of available torque at low speed From 20 to 100: increase of available torque at low speed 16 UFt L n P UFt L n P