Emerson EV1000-2S0004G User Manual page 53

j X
R
1 l
1
I
1
U
I
1
0
Figure 5-69 Motor's Equivalent Circuit
In Figure 5-6868, R , X , R
1 1l
resistance, stator's leakage inductance, rotor's resistance,
rotor's leakage inductance, mutual inductance and current
without load respectively. The setting of FH.05 is the sum of
stator's leakage inductance and rotor's inductance.
The settings of FH.04 ~FH.07 are all percentage.
Formula used for calculating stator's resistance or rotor's
resistance:
R
= ×
( )
% R 100 %
⋅
V / 3 I
R: Stator's resistance or rotor's resistance that is converted
to the stator's side;
V: rated voltage;
I: motor's rated current
Formula for calculating (leakage inductance or mutual
inductance) :
X
= ×
( )
% X 100 %
⋅
V / 3 I
X: the sum of leakage inductance of stator and rotor, or
mutual inductance. The rotor's inductance has been
converted to the stator's side;
V: rated voltage;
I: motor's rated current
If motor's parameters are available, please set FH.04
~FH.07 to the values calculated according to the above
formula.
If the drive performs auto-tuning of motor's parameters, then
the settings of FH.03~FH.07 after the auto-tuning process
will be updated.
After motor power (setting of FH.01) is changed, the drive
will set FH.02~FH.07 to corresponding parameters.
FH.08 Rated slip frequency
Motor's rated slip frequency can be calculated by the motor's
rated speed (on the nameplate) :
Rated slip frequency = motor's rated frequency (i.e. basic
operating frequency F0.06) × (motor's synchronous
speed-motor's rated speed) ÷motor's synchronous speed.
Where: motor's synchronous speed = motor's rated
frequency × 120÷number of motor's poles (FH.00)
After setting the slip frequency, the slip compensation will be
enabled by F3.07~F3.09.
FH.09 Auto tuning
R
j X
2 l
2
R
I
2
m
1 - S
X
m
, X , X and I represent stator's
2 2l m 0
Range: 0.00~20.00Hz 【 0.00Hz 】
Range: 0~2 【 0 】
EV1000 Series General Purpose Variable Speed Drive User Manual
FH09 can be used to measure and write-in the motor's
parameters automatically.
0: Auto-tuning is disabled
R
1: Stationary auto-tuning (Start auto-tuning to a standstill
S
2
motor)
Before starting auto-tuning, values on the motor's nameplate
must be input correctly (FH.00~FH.02) .
When starting auto-tuning to a standstill motor, the stator's
resistance (%R1) , rotor's resistance (%R2) and the leakage
inductance (%X1) will be measured and the measured
values will be written into FH.04, FH.05 and FH.06
automatically.
FH.09=2: rotating auto-tuning
When starting a rotating auto-tuning, at first, the motor is in
standstill status, and the stator's resistance (%R1) , rotor's
resistance (%R2) and the leakage inductance (%X1) will be
measured, and then the motor begins to rotate, mutual
inductance (%XM) , I
FH.04, FH.05, FH.06, FH.07 and FH.03 automatically.
After auto-tuning, FH.09 will be set to 0 automatically.
Auto-tuning procedures:
1) Set the "F0.06 basic operating frequency" and "F0.07 Max
output voltage" correctly according to the motor's feature;
2) Set the FH.00, FH.01 and FH.02 correctly;
3) If FH.09 is set to 2, Acc time (F0.10) and Dec time (F0.11)
should be set correctly and remove the load from the motor
and check the safety;
4) Set FH.09 to 1 or 2, press FUNC/DATA, and then press
RUN to start auto-tuning;
5) When the operating LED turns off, that means the
auto-tuning is over.
Note
When setting FH.09 to 2, you may increase Acc/Dec time if
over-current or over-voltage fault occurs in the auto-tuning
process;
When setting FH.09 to 2, the motor's load must be removed
before starting rotating auto-tuning;
The motor must be in standstill status before starting the
auto-tuning, otherwise the auto-tuning cannot be executed
normally;
If it is inconvenient to start auto-tuning (e.g. the motor cannot
break away from the load) , or you don't require much on motor's
control performance, you can use stationary auto-tuning or even
disable the function. You may input the values on the motor's
nameplate correctly (FH.00~FH.02) .
If the auto-tuning function is unavailable and there is motor's
parameters on the nameplate, you should input the values
correctly (FH.00~FH.02) , and then input the calculated values
(FH.03~FH.07) . Please set the parameters correctly.
If auto-tuning is not successful, the drive alarms and displays fault
E024.
FH.10 Motor stabilization fator
Chapter 5 Parameters
will be measured and written into
0
Range: 0~255 【 Depending on
model 】
51