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KEB COMBIVERT F5-M / S16

Name: Basis

12.05.04

Chapter Section Page Date

Functional Desription Setpoint- and Ramp Adjustment

At the ramp with constant time the acceleration and deceleration times adjusted

with oP.28...oP.31 always equal the real ramp times, independent of the set value.

In this operating mode S-curves are not possible. For acceleration the actual set

value is always used as reference value, for deceleration the last set values is

always used.

Here a little example for the use of ramps with constant time:

Two conveyor belts run with different speeds. Both of them receive the Stop-

command at the same time. The belts reduce the speed in proportion to the adjusted

time and come to a standstill simultaneously.

6.4.9 Ramp with constant

time

f_soll

f_ist

t_rampe

t_rampet_rampet_rampet_rampe

Fig. 6.4.9.a Forward acceleration with constant ramp time

n_soll

n_ist

6.4.8 Limiter

(oP.40 / oP.41)

The setpoint value to the ramp generator can be changed for example by slip

compensation. Before the setpoint value triggers the modulator, it is again

limited. The limiter defines the maximum output frequency and can be

programmed differently in all sets.

If the frequency rises above the adjusted value, the error ÑE.OSì is triggered. At

oP.41 = Ñ=Forì the value applies to clockwise rotation oP.40.

Setting range oP.40: 0...4000 min

-1

Default: 4000 min

-1

Setting range oP.41:=For; 0...4000 min

-1

Default: =For

Output limit forward (oP.40)

Output limit reverse (oP.41)

KEB COMBIVERT F5 MULTI User Manual

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