Danfoss FC 300 Series User Manual

1-62 Slip Compensation
Range: Function:
Application
dependent
*
[-500 -
500 %]
Enter the % value for slip compensation
to compensate for tolerances in the value
of n
M,N
. Slip compensation is calculated
automatically, i.e., on the basis of the
rated motor speed n
M,N
.
This function is not active when
1-00 Configuration Mode is set to Speed
closed-loop [1] or Torque [2] Torque
control with speed feedback or when
1-01 Motor Control Principle is set to U/f [0]
special motor mode.
1-63 Slip Compensation Time Constant
Range: Function:
Application
dependent
*
[0.05 - 5.00
s]
Enter the slip compensation
reaction speed. A high value results
in slow reaction, and a low value
results in quick reaction. If low-
frequency resonance problems
arise, use a longer time setting.
1-64 Resonance Dampening
Range: Function:
100 % * [0 - 500
%]
Enter the resonance dampening value. Set
1-64 Resonance Dampening and
1-65 Resonance Dampening Time Constant to
help eliminate high-frequency resonance
problems. To reduce resonance oscillation,
increase the value of 1-64 Resonance
Dampening.
1-65 Resonance Dampening Time Constant
Range: Function:
5 ms * [5 - 50 ms] Set 1-64 Resonance Dampening and
1-65 Resonance Dampening Time Constant to
help eliminate high-frequency resonance
problems. Enter the time constant that
provides the best dampening.
1-66 Min. Current at Low Speed
Range: Function:
100
%
*
[Application
dependant]
Enter the minimum motor current at low
speed, see 1-53 Model Shift Frequency.
Increasing this current improves motor
torque at low speed.
1-66 Min. Current at Low Speed is enabled
when 1-00 Configuration Mode = Speed
open-loop [0] only. The adjustable frequency
drive runs with constant current through
motor for speeds below 10 Hz.
1-66 Min. Current at Low Speed
Range: Function:
For speeds above 10 Hz, the motor flux
model in the adjustable frequency drive
controls the motor. 4-16 Torque Limit Motor
Mode and / or 4-17 Torque Limit Generator
Mode automatically adjust 1-66 Min. Current
at Low Speed. The parameter with the
highest value adjusts 1-66 Min. Current at
Low Speed. The current setting in 1-66 Min.
Current at Low Speed is composed of the
torque generating current and the
magnetizing current.
Example: Set 4-16 Torque Limit Motor Mode
to 100% and set 4-17 Torque Limit Generator
Mode to 60%. 1-66 Min. Current at Low Speed
automatically adjusts to about 127%,
depending on the motor size.
This parameter is available for the FC 302
only.
1-67 Load Type
Option: Function:
[0] * Passive load For conveyers, fan and pump applications.
[1] Active load For hoisting applications, used in slip compen-
sation at low speed. When Active Load [1] is
selected, set 1-66 Min. Current at Low Speed to a
level which corresponds to maximum torque.
This parameter is available for the FC 302 only.
1-68 Minimum Inertia
Range: Function:
Application
dependent
*
[Application
dependant]
Needed for average inertia
calculation. Enter the minimum
moment of inertia of the
mechanical system. 1-68 Minimum
Inertia and 1-69 Maximum Inertia
are used for pre-adjustment of the
proportional gain in the speed
control, see 30-83 Speed PID Propor-
tional Gain.
This parameter is available for the
FC 302 only.
This parameter cannot be adjusted while motor is running.
Parameter Descriptions FC 300 Programming Guide
3-20 MG.33.MA.22 - VLT
®
is a registered Danfoss trademark
3
3

Danfoss FC 300 Series Specifications

General

Brand	Danfoss
Model	FC 300 Series
Category	DC Drives
Language	English