Efficient Networks S120 manual Ramp-function generator, Suppression bandwidths

Extended setpoint channel

2.9Ramp-function generator

●p1088[C] DI: Speed limit negative direction of rotation

●r1119 Ramp-function generator setpoint at the input

Suppression bandwidths

●p1091[D] Suppression speed 1

●...

●p1094[D] Suppression speed 4

●p1101[D] Suppression speed bandwidth

Parameterization with STARTER

The "speed limitation" parameter screen is selected by activating the following icon in toolbar of the STARTER commissioning tool:

Figure 2-8 STARTER icon for "speed limitation"

2.9Ramp-function generator

Description

The ramp function generator is used to limit acceleration in the event of abrupt setpoint changes, which helps prevent load surges throughout the drive train. The ramp-up time p1120[DDS] and ramp-down time p1121[DDS] can be used to set an acceleration ramp and a deceleration ramp independently of each other. This allows a controlled transition to be made in the event of setpoint changes.

The maximum speed p1082[DDS] is used as a reference value for calculating the ramps from the ramp-up and ramp-down times. A special adjustable ramp can be set via p1135 for fast stop (OFF3), e.g. for rapid controlled deceleration when an emergency stop button is pressed.

There are two types of ramp function generator:

●Simple ramp function generator with

–Acceleration and deceleration ramps

–Ramp for fast stop (OFF3)

–Tracking can be selected via a binector input

–Setting values for the ramp function generator

●Extended ramp function generator also has

–Initial and final rounding off

Note

The ramp function generator cannot be frozen (via p1141) in jog mode (r0046.31 = 1).

60	Drive Functions
	Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4