nord NORDAC SK 225E - Page 106

NORDAC SK 200E Manual
106 Subject to technical alterations BU 0200 GB
Parameter
[factory setting]
Setting value / Description / Note Device Supervisor Parameter set
P320 Field weakening controller limit
S P
0 ... 110 %
[ 100 ]
The field weakening limit determines at which speed / current the controller will begin to weaken
the field. At a set value of 100% the controller will begin to weaken the field at approximately the
synchronous speed.
If values much larger than the standard values have been set in P314 and/or P317, then the
field weakening limit should be correspondingly reduced, so that the control range is actually
available to the current controller.
P321 Speed control I release time
S P
0 ... 4
[ 0 ]
During the brake release time (P107/P114), the I-component of the rotation speed control is
increased. This leads to better load take-up, especially with vertical movements.
0 = P311 x 1
1 = P311 x 2
2 = P311 x 4
3 = P311 x 8
4 = P311 x 16
P325 Encoder function
S
0 ... 4
[ 0 ]
The actual speed list value supplied by an incremental encoder to the FI can be used for various
functions in the FI.
0 = Speed measurement Servo mode: The actual motor speed list value is used for the FI
servo mode. The ISD control cannot be switched off in this function.
1 = PID actual frequency value: The actual speed of a system is used for speed control. This
function can also be used for controlling a motor with a linear characteristic curve. It is
also possible to use an incremental encoder for speed control that is not mounted directly
onto the motor. P413 – P416 determine the control.
2 = Frequency addition: The speed determined is added to the current setpoint value.
3 = Frequency subtraction: The speed determined is subtracted from the actual setpoint.
4 = Maximum frequency: The maximum possible output frequency / speed is limited by the
speed of the encoder.
P326 Encoder conversion
S
0.01 ... 100.00
[ 1.00 ]
If the incremental encoder is not mounted directly onto the motor shaft, then the respectively
correct transformation ratio of motor speed to encoder speed must be set.
speed Encoder
speed Motor
P326 
Only when P325 = 1, 2, 3 or 4, therefore not in Servo mode (motor speed control)
P327 Slip error, speed control
S P
0 ... 3000 rpm
[ 0 ]
The limit value for a permitted maximum slip error can be set. If this value is reached, the FI
switches off and indicates error E013.1.
0 = OFF
Only when P325 = 0, therefore in Servo mode (motor speed control)