Hunting Prevention Gain: C7-02; Motor Line-To-Line Resistance: E2-05; Setting Motor Constants - YASKAWA VARISPEED-616G5 Instruction Manual

Advanced Operation

7.2.3 Setting Motor Constants

7.2.3 Setting Motor Constants
7
Settings
D
Setting
0 Disables the hunting-prevention function.
1 Enables the hunting-prevention function.

Hunting Prevention Gain: C7-02

J
User User
Constant Name
Number
Hunting prevention
C7-02
gain
Normally it isn't necessary to change these constants. Adjust these constants as follows if hunting occurs
with a light load.
Increase the setting in C7-02 if oscillation occurs when operating with a light load.
D
(If the setting is increased too much, the current can fall to the point where stalling occurs.)
Decrease the setting in C7-02 if stalling occurs.
D
Disable the hunting-prevention function (C7-01 = 0) if high responsiveness is more important than
D
suppressing oscillation.
Motor Rated Slip: E2-02
J
User User
Constant Name
Number
E2-02
Motor rated slip
This setting is used as a reference value for the torque compensation function.
D
The default setting depends upon the Inverter capacity.
D
(The table shows the default settings for 200 V class, 0.4 kW Inverters.) (See page 8 - 47.)
Calculate the rated slip (E2-02) from the value shown on the motor nameplate with the following equa-
D
tion and set this value.
Rated slip = rated frequency (Hz) − rated speed (r/min) × number of poles/120
Motor No-load Current: E2-03
J
User User
Constant Name
Number
Motor no-load cur-
E2-03
rent
This setting is used as a reference value for the torque compensation function.
D
The default setting depends upon the Inverter capacity.
D
(The table shows the default settings for 200 V class, 0.4 kW Inverters.) (See page 8 - 47.)
Set the no-load current (E2-03) at the rated voltage and rated frequency. Normally this value isn't
D
shown on the motor nameplate, so it might be necessary to contact the motor manufacturer.

Motor Line-to-line Resistance: E2-05

J
User User
Name
Constant
Number
Motor line-to-line
E2-05
resistance
This setting is used as a reference value for the torque compensation function.
D
The default setting depends upon the Inverter capacity.
D
(The table shows the default settings for 200 V class, 0.4 kW Inverters.) (See page 8 - 47.)
Set the motor's terminal resistance (U−V, V−W, and W−U). Normally this value isn't shown on the
D
motor nameplate, so it might be necessary to contact the motor manufacturer.
Function
Change g
during during Setting Setting Unit Factory
Opera- Range
tion
Mul-
0.00 to 2.50
×
tiple
Change g
during during Setting Setting Unit Factory
Opera- Range
tion
0.00 to
Hz
×
20.00
Change g
during during Setting Setting Unit Factory
Opera- Range
tion
0.00 to
A
×
1500.0
Change g
during during Setting Setting Unit Factory
Opera- Range
tion
0.000 to
Ω
×
65.000
7 - 14
Valid Access Levels
Factory
Open
V/f V/f with
Setting
Loop
Control PG
Vector
A A
1.00
×
Valid Access Levels
Factory
Open
V/f V/f with
Setting
Loop
Control PG
Vector
A A Q
2.90
Valid Access Levels
Factory
Open
V/f V/f with
Setting
Loop
Control PG
Vector
A A Q
1.20
Valid Access Levels
Factory
Open
V/f V/f with
Setting
Loop
Control PG
Vector
9.842 A A A
Flux
Vector
×
Flux
Vector
Q
Flux
Vector
Q
Flux
Vector
A