UNIFREM v.3.41x
10 May 2017
Page 157 from 180
For example:
- When one traction vehicle axle or bridge travers is slipping against the other
- Torque limit reduction, so the vehicle axle with less adhesion does not outrun the other
- RESET can be generated at material supply interruption and drives detuning on the rolling
line (one part of the line is under load and the other no-load)
- etc.
Parameters in parameters group are used to configure „IRC detuning“ function.
Parameter ID: 1081
SETTINGS
–
> FUNCTIONS -> IRC1,2 DETUNING
Configuration and mode of operation:
Parameter name
ID
Description
IRC1,2 Detuning
1082
Setting the operation method and the converter operation when
detuning the IRC1 and IRC2 speed.
torque restriction
IRC1, 2 detuning will cause torque restriction of motors.
reset PWM
IRC1, 2 detuning will cause immediate shutdown of motors (RESET).
Filter dIRC1,2
1083
Time constant of the IRC1 and IRC2 frequency difference filter.
Minimal IRC1,2
difference
1084
Minimal limit of the absolute value for the IRC1 and IRC2 frequency difference.
Maximal IRC1,2
difference
1085
Maximal limit of the absolute value for the IRC1 and IRC2 frequency
difference.
These displayed values are used for diagnosis and evaluation:
Frequency IRC1
434
Rotor frequency defined by the rotation speed sensor from the IRC1
motor.
Frequency IRC2
803
Rotor frequency defined by the rotation speed sensor from the IRC2
motor.
Frequency
IRC1-
IRC2
1086
This value is filtered by the first row
filter from the parameter „
Filter
dIRC1,2“ (ID1083).
Principle of operation:
Motor torque restriction starts to decrease when the minimal value of frequency difference "Minimal
IRC1, 2 difference" (ID 1084) is exceeded, if the choice „torque restriction“ is active in the
parameter „IRC1,2 Detuning“ (ID 1082). Torque is
zero
at the maximal difference "Maximal IRC1,
2 difference" (ID 1085). Shutting down the drive is smoothly proportional to detuning value.
Warning „
W62 - IRC1,2 Detuning
“ is displayed during torque reduction.
