112 • vacon parameter descriptions99.4 Ramps & brakes setup (Control panel: Menu PAR -> P4)4.1 RAMP S- SHAPEThe start and end of the acceleration and deceleration ramp can be smoothedwith this parameter. Setting value 0 gives a linear ramp shape which causesacceleration and deceleration to act immediately to the changes in the refer-ence signal.Setting value 0.1…10 seconds for this parameter produces an S-shaped accel-eration/deceleration. The acceleration and deceleration times are determinedwith parameters 4.2 and 4.3.P4.2, 4.3[Hz][t]P4.1P4.1Figure 9.9: S-shaped acceleration/deceleration4.2 ACCELERATION TIME 14.3 DECELERATION TIME 14.4 RAMP S- SHAPE 24.5 ACCELERATION TIME 24.6 DECELERATION TIME 2These limits correspond to the time required for the output frequency to ac-celerate from the zero frequency to the set maximum frequency, or to decel-erate from the set maximum frequency to zero frequency.The user can set two different acceleration/deceleration time and set two dif-ferent ramp s-shape for one application.The active set can be selected withthe selected digital input (par. 5.11).Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
