Lenze 8200 Frequency inverters - Manual (Page 113)

Commissioning
8200SHB0199 5-8
5.4.2 Optimising operating modes
5.4.2.1 Optimising motor-current control (C014 = -4-)
820X setting range: Function is not available
821X/822X/824X setting range:
Required codes
Code Name Possible settings IMPORTANT
Lenze Choice Info
C015 V/f rated frequency 50.00 7.50 {0.02 Hz} 960.00
C021 Slip compensation 0.0 0.0 {0.1 %} 20.0
C088 Rated motor current * 0.0 ... 2.0 k rated output current * depends on
the unit
Input only necessary
when motors not
C091 Motor cos j * 0.40 {0.01} 1.00
the unit when motors not
adapted
Setting sequence - Drives with matching 4-pole standard motors 230/400 V in star connection must not be
connected. After having started the drive, the controller itself detects all further motor data.
- The following drives can be optimised by entering the nameplate data ”rated motor current” and
”cos
j” under C088 or C091:
- Motor, one power class smaller than the motor assigned to the controller.
- Motor, one or two power classes smaller than the motor assigned to the controller.
- Drives with 2, 6, 8, 10 and 12 pole standard motors.
- Drives with special motors.
- The sensorless speed control can be optimised for your application with the ”sensorless speed
control”.
1.If necessary, select
C014 = -4-.
(Factory setting)
2.Select V/f-rated frequency
(C015).
Adjustment
Calculate the frequency to be set under C015:
C015 [Hz]
400 V
V
rmotor
[V]
ô f
r
[Hz]
V
rmotor
Rated voltage to motor nameplate [V]
f
dr
Rated frequency to motor nameplate [Hz]
For standard motors with f
dr
= 50 Hz, the following settings result for C015:
Motor voltage Motor connection C015
230/400 V Y 50 Hz
230/400 V D 87 Hz
3.If necessary, parameterise
C088, C091.
These motor data must only be entered for non-matching motors.
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