5-33
P05 Motor 1 (On-line Tuning)
P05M1 TUN2
Long-time operation affects motor temperature and motor
speed. On-line tuning minimizes speed changes related
to these temperature changes.
Value Operation
0 Inactive
1 Active
P06 Motor 1 (no-load current)
P06M1– IO
Setting range: 0.00 to 2,000 A
This function sets the no-load current (exciting current) for
Motor 1.
P07 Motor 1 (%R1 setting)
P08 Motor 1 (%X setting)
P07M1 %R1
P08M1 %X
These functions are used to set data if using a motor
other than the GE standard 3-phase motor and when the
motor constant and the impedance between the drive and
motor are known.
Calculate %R1 using the following formula:
%R1 =
R1 + CableR
V / ( 3 • I )
X 100 [%]
R1: Primary coil resistance value of the motor [W]
Cable R: Output-side cable resistance value [W]
V: Rated voltage [V] I: Rated current [A]
Rated current
%X =
X1 +X2 • XM / (X2+XM) + Cable X
V / ( 3 • I )
X 100 [%]
X1: Primary leakage reactance of the motor [W]
X2: Secondary leakage reactance (converted to a primary
value) of the motor [W]
XM: Exciting reactance of the motor [W]
Cable X: Output-side cable reactance [W]
V: Rated voltage [V]
I: Rated current [A]
Note:
For reactance, use a value from the data stored in F04
Base frequency 1.
When connecting a reactor or filter to the output circuit,
add its value. Use value 0 for cable values that can be
ignored.
P09 Slip compensation control
P09SLI P COMP1
Setting range: 0.00 to 15.00 Hz
Changes in load torque affect motor slippage, thus
causing variations in motor speed. The slip compensation
control adds a frequency, proportional to motor torque, to
the drive output frequency. This will minimize variations in
motor speed due to changes in torque.
Calculate the amount of slip compensation using the
following formula:
= Base frequency X
Slippage [r/min.]
[Hz]
Synchronous speed [r/min.]
Slippage = Synchronous speed - Rated speed
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