Altivar 16 AC Drive Specific functions S ramps Available on: VW3A16104 , VW3A16201 with or without VW3A16101 , VW3A16102 or VW3A16104 . Function Progressive ramping of the output frequency, following the reference speed. Applications Material handling: Use of S ramp prevents jolts in the event of mechanical play, and reduces the possibility of not following the speed during rapid transient phases. f 1 t 0 FW (RV) t Skip frequencies Available on: VW3A16202 + VW3A16101 , VW3A16102 or VW3A16104 . Function Suppression of critical speeds caused by mechanical resonance. It is possible to cause the motor to skip 1 or 2 preset frequencies with a bandwidth of 2 Hz.
Applications Pump, fans, machines with light structure. f JF2 Factory settings: JF1 = 0 (inactive) JF2 = 0 (inactive) JF1 Reference Controlled stop on loss of input power [1] Available on: - VW3A16104 - VW3A16201 + VW3A16101 , VW3A16102 or VW3A16104 - VW3A16202 + VW3A16101 , VW3A16102 or VW3A16104 - VW3A16203 + VW3A16104 Function Controlled stop of the motor on loss of input supply power, following a self-adjusting ramp which is a function of the regenerated energy. Applications Material handling Machines with high inertia Continuous process machines f Vn t t [1] ATV-16U GG N4 only. 28