Lenze 8200 motec frequency inverter 0.25kW-7.5kW - Manual (Page 111)

Function library
Configuration of analog and digital setpoints and actual values
7−40
L
EDB82MV752 EN 5.2
Code IMPORTANT Possible settings
No. Selection Lenze Name
C0428*
(A) Gain frequency
output
(DFOUT1−OUT) 100 0.0 {0.1 %} 1500.0
C0435*
v
(A)
Automatic
frequency input
adjustment 0 0
= not active {1} 4096
·
Only require for speed control with
digital feedback via HTL encoder
·
Calculates the gain C0426, depending
on C0425 and C0011
·
C0426 will be recalculated after every
change of C0011 or C0425.
·
Always enter number of increments
divided by number of pole pairs of
the motor!
– Example: Encoder increments = 4096,
motor 4−pole Þ C0435 = 2048
Activation
1. If you use X3/E1 or X3/E1 and X3/E2 as frequency inputs, you must ensure that the inputs are
not connected to other digital signals:
– These connections must be removed under C0410
– Otherwise the controller will evaluate the digital setpoint signal in a wrong way! (
^ 14−1 ff)
2. Assign the signal source "frequency input" to the required setpoint or actual value under
C0412 (C0412/x = 2).
3. Activation of frequency input with C0410/24 = 1.
)
Note!
l In addition to the free configuration under C0412 you can also use the fixed
assignment under C0007 and C0005:
l Use C0007 to link the function with a digital input.
l Use C005 to select a configuration which evaluates the frequency input.
Adjustment
1. Enter frequency, resolution, scanning time and type (single−tracked, two−tracked) of the
setpoint signal (C0425).
2. Set the gain and ensure that the input frequency corresponds to the normalisation frequency
at maximum process speed of the motor (C0426).
– The gain always affects setpoint signal and offset.
– 100 % equals gain factor = 1.
C0426 +
f
N
@ p
z @ C0011 @
100 %
f
r
Normalisation frequency from C0425
p Pole pair number of the motor
z Number of increments of the encoder
C0011 Maximum output frequency (corresponds to maximum process
speed of the motor)
3. If necessary, adjust the offset (C0427).
– The offset shifts the characteristic.
Tip
·
For higher accuracy requirements, select a higher resolution under C0425.
·
The direction of rotation of the motor can be evaluated with a two−tracked frequency signal.
)
Note!
The setting for the minimum output frequency (C0010) is not effective.