13
6713
KEB COMBIVERT F5
Name: Basis
18.04.02
6
Abschnitt SeiteDatum
© KEB Antriebstechnik, 2002
All rights reserved
Kapitel
Functional DescriptionProtective Functions
6.7.7 Quick Stop
(Pn.58...60)
The function Quick Stop is triggered through malfunctions (abnormal stopping) or by
the control word (sy.50 Bit 8). It is defined by the following parameters.
The Quick Stop mode determines the basic operating mode of the function.
Pn.58 Description
Value Control mode
0 Control via ramp generator (default)
1 Control via differential controller
Value Actual value for differential controller
0 Apparent current (default)
2 Active current
The Fast Stop level determines the setpoint value for the differential control. The
adjustable value of 10...200% refers to a rated inverter current (In.1).
Depending on the adjustment of the control mode in Pn.58 the ramp time or the time
constant of the differential controller is adjusted here within the range of 0...300.00 s
(default 2.00 s). The ramp time refers to 100 Hz / 1000 rpm (depending on ud.2).
Setting of the torque limit during fast stop in the range of 0...10000 Nm.
Setting of the max. torque at field weakening speed (dr.18) during quick stop in the
range 0...10000,00 Nm (also see chap. 6.6.4).
Regulation by ramp generator
Quick stop with time delay stop (LD(U)-Stop) onto the minimum output value (op.36 /
op.37). At abnormal stopping with holding torque the modulation remains switched
on, otherwise it is switched off (also at quick stop by control word sy.50 Bit 8).
Regulation by differential controller
Quick stop with time delay stop (LD(U)-Stop) onto the minimum output value (op.36 /
op.37) with variable step size (see below). At abnormal stopping with holding torque
the modulation remains switched on, otherwise it is switched off.
The differential controller changes the adjusted step size (from pn.60), if the actual
value is larger than the setpoint value:
100 Hz
Adjusted step size = ————–
ramp time
Setpoint value - Actual value
Step size = adjusted step size * (1 + —————————————— )
Inverter rated current
Quick Stop / Level (Pn.59)
(F5-G)
Quick Stop / Ramp time
(Pn.60)
Quick Stop / Mode (Pn.58)
Function description F5-G
Function description F5-M/S
Quick Stop / Torque limit
(Pn.61) (F5-M/S)
At quick stop the motor is decelerated with the adjusted ramp time (pn.60) with LD(U)-
Stop or at the torque limit (pn.61) to 0 rpm .
In case of abnormal stopping with holding torque the modulation remains active,
otherwise it is switched off (also at quick stop via control word sy. 50 bit 8).
Quick stop / max. torque at
corner speed (Pn.67) (F5-M/S)
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