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6
1
Name: Basis
KEB COMBIVERT F4-F
8
16.03.99
Fucntional Description
©
KEB Antriebstechnik, 1999
All Rights reserved
Chapter
Section
Page
Date
Adr.
min
max
default
Adr.
min
max
default
Adr.
min
max
default
2001h
0,5
9999,5
-9999,5
-
ru-Parameter
2002h
0,1
Nm
-
1000,0
0
2004h
0,5
-
9999,5
-9999,5
ru. 1
Actual speed display
rpm
Display of actual motor speed (incremental encoder 1).
For a correct display value observe the adjustment of the encoder line number (parameter dr.25) and the rotation
direction (parameter dr.29) of the incremental encoder!
A counter-clockwise rotating field (reverse) is represented by a negative sign. Precondition is the in-phase connection
of the motor.
ru. 2
Actual torque display
The displayed value corresponds to the actual motor torque in Nm. The value is calculated from the active current. In
controlled operation (CS.23 = 0) the value for the actual torque is set to zero.
Because of normal type differences and temperature deviations of the motors as well as measuring
inaccuracies of the inverter tolerances of up to 30 % are possible in the base speed range. Dependent on
the dimensioning or in the field weakening range higher tolerances can also occur in few cases.
Requirement for the torque display is the adjustment of the motor data in the dr-parameters. If the real
motor data deviate strongly from the data on the name plate the operating performance can be optimized by entering
the real data. It may be sensible to reduce the rated slip by approx. 10...20% (i.e. increase rated speed dr.1). The
adjustment of the name plata data is sufficient for a start-up.
ru. 4
Set speed display
rpm
In ru. 4 the setpoint speed is displayed at the output of the ramp generator. If the inverter is locked or if an ‘abnormal’
operating condition is active, the value 0 rpm is displayed.
This parameter is, above all, important for the visualization with the inverter scope. In controlled operation (CS.23 = 0)
the output frequency is converted and displayed in rotations per minute (precondition: correct motor data for the
number of pole pair calculation is available).
clowckwise
rotation
(forward)
counter-clockwise
rotation
(reverse)