Maximum Acceleration Or Deceleration; Monitor The Speed Difference - KEB COMBIVERT F6 Programming Manual

Protection functions

Maximum acceleration or deceleration

Index Id-Text Name
max acc/dec level
0x2A24 pn36
[s-2]
E.max acc/dec stop
0x2A25 pn37
mode
The maximum acceleration or deceleration can be monitored for all operating
modes. The level in
The acceleration is additionally limited to the value in
interpolator (8, 9, 10).
Thereby errors of the superior control can be compensated. Additionally an error
reaction should be activated in pn37.

Monitor the speed difference

Index Id-Text Name
0x2A26 pn38 speed difference level
0x2A27 pn39 speed difference time
0x2A28 pn40 speed difference stop mode
speed difference calcula-
0x2A29 pn41
tion mode
Monitoring of the difference between the set speed (defined via pn41) and the ac-
tual speed.
By way it can be monitored e.g. whether the drive can follow a setpoint in the cor-
rect manner.
This can prevent e.g "overspeed" of a synchronous motor with wrong system posi-
tion, if the
Parameter
flag is set.
pn38 speed diff level
Value Plaintext
0 ... 8000 0.0% ... 800%
With pn41
speed value is either
or channel B
This selection of the actual speed value also determines the display in
DiffSpeed.
ru83[1]
actual speed) etc.
The selection of "actual speed" for this display is also done via pn41.
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Function
Maximum acceleration / deceleration value
Error reaction (=> see Chapter 4.3.1 Errors)
pn36 is normalized (in [s-2]) as well as the ramps.
pn39 speed difference time
pn38 speed diff level is used to define the difference at which the error
Note
Speed difference in % rated motor speed
you can select which value is to be used as speed setpoint. The actual
ru08 actual value
(ru09 B).
display the 4 differences (ru84 – actual speed), (ramp output –
... ru83[4]
pn36 in operating modes with
Function
Speed difference in % rated motor speed
Error is triggered if the time of the speed difference is
longer than pn39
Error reaction (=> see Chapter 4.3.1 Errors)
Selection which value shall be taken as reference
value for the speed difference calculation.
is selected sufficiently small.
or the encoder speed of channel A
0x2A26
(ru09 A)
ru83
75