Calculating Motor Parameters - Veikong gpd 515/g5 Startup Manual

2.4

CALCULATING MOTOR PARAMETERS

This procedure can be used as an alternative to auto-motor tuning. If the motor being used
with the drive did not pass motor auto-tuning or if the motor cannot be disconnected from
the load, the motor parameters need to be calculated and entered manually.
T h i s p r o c e d u r e o n l y a p p l i e s t o t h e O p e n L o o p V e c t o r C o n t r o l m e t h o d & t h e
F l u x V e c t o r C o n t r o l m e t h o d .
The following information used in the calculation formulas is usually listed on the motor
nameplate. If no-load current is not marked on the nameplate and the motor manufacturer
is not able to supply it, use the default value of (0.3 x I
Motor Voltage (V)
Motor Rated Speed (RPM)
Motor Rated Frequency (Hz)
Motor Synchronous Speed (RPM)
Full Load Amps (FLA)
No-Load Amps (NLA)
DESCRIPTION
Enter the Maximum frequency
( E1-04 ). For constant torque
applications, set to motor
nameplate frequency. For
constant horsepower
applications, set to maximum
frequency desired.
KEY SEQUENCE
Press , then
MENU
DATA
Press , then
ENTER
DATA
Press twice
ENTER
Press twice, then
Set the maximum frequency using:
Write value to memory by pressing
DATA
ENTER
2-20
) = I
FLA NLA
V m
N
R
f
R
N ( N = f * 120 / number of motor poles)
S S R
I
FLA
I
NLA
twice
3 times
DATA
ENTER
RESET
.
DIGITAL OPERATOR DISPLAY
** Main Menu **
Programming
Group E
Motor
Input Voltage
E1-01= 460 VAC
Max. Frequency
0060.0 HZ
Max. Frequency
0060.0 HZ
Entry Accepted
briefly, then
Max. Frequency
E1-04= 60.0 HZ