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ANTRIEBSTECHNIK
6
4
7
KEB COMBIVERT F4-F
Name: Basis
Functional Description
Set Value and Ramp Adjustment
Chapter
Section
Page
Date
©
KEB Antriebstechnik, 1999
All Rights reserved
16.03.99
+n [U/min]
-n [U/min]
+9999,5
SP.6*
1
(SP.4)
-9999,5
SP.4
SP.8
SP.5
SP.9*
1
(SP.8)
SP.7*
1
(SP.5)
+100
-100
Absolute maximum speed
6.4.3
Setpoint Limits
Following limit values can be adjusted:
Setpoint [%]
Setpoint [%]
Minimum speed
Maximum speed
Absolute maximum speed
Maximum speed
Minimum speed
*1
If the value „off“ is adjusted in these parameters (limit values direction of rotation
reverse), then the values adjusted for direction of rotation forward (SP.4, SP.5
und SP.8) apply for it.
In order to restrict the setpoint speed minimum and maximum speed must be adjusted.
These limit values form the basis for the further setpoint calculation and for the
determination of the speed characteristics,
also see Chapter 6.4.4 „Setpoint
calculation“.
The frequency inverter F4-F offers the possibility to adjust separate limits for both
directions of rotation.
Minimum / maximum speed
(SP.4...SP.7)
The absolute maximum speed also limits the setpoint speed and can be adjusted
separately for both directions of rotation. These parameters represent absolute limit
values which in normal operation are not exceeded and which have no effect on the
speed characteristic.
Absolute maximum speed
(SP.8, SP.9)
Fig. 6.4.3
Setpoint limits
The maximum speed limits the setpoint speed only. Because of speed ripples,
speed overshoot or hardware defects (e.g. defective encoder) the actual speed
may exceed these limits.