Leeson 174621 - Vector Parameters

27
Commissioning
4.5.5 Vector Parameters
Code Possible Settings
IMPORTANT
No. Name Default Selection
P300
(1)
Drive Mode 0 0 Constant V/Hz Constant torque V/Hz control for
general applications
1 Variable V/Hz Variable torque V/Hz control for
centrifugal pump and fan applications
2 Enhanced Constant V/Hz For single or multiple motor
applications that require better
performance than settings 0 or 1, but
cannot use Vector mode, due to:
• Missing required motor data
• Vector mode causing unstable motor
operation
3 Enhanced Variable V/Hz
4 Vector Speed
For single-motor applications requiring
higher starting torque and speed
regulation
5 Vector Torque For single-motor applications requiring
torque control independent of speed
Note
To configure the drive for either Vector mode or Enhanced V/Hz mode:
• P300 = 4, 5:
- Set P302...P306 according to motor nameplate
- Set P399 = 1
- Make sure motor is cold (20° - 25° C) and apply a Start command
- Display will indicate
CAL for about 40 seconds
- Once the calibration is complete, the display will indicate
Stop; apply
another Start command to actually start the motor
- If an attempt is made to start the drive in Vector or Enhanced V/Hz
mode before performing the Motor Calibration, the drive will display
F.n1d and will not operate
• P300 = 2, 3: Same as above but only need to set P302…P304
P302
(1)
Motor Rated
Voltage
0 {V} 600
• Default setting = drive rating
• Set to motor nameplate data
P303
(1)
Motor Rated
Current
0.0 {A} 500.0
p304
(1)
Motor Rated
Frequency
60 0 {Hz} 1000
Set to motor nameplate data
P305
(1)
Motor Rated
Speed
1750 300 {RPM} 65000
P306
(1)
Motor Cosine Phi 0.80 0.40 0.99
Note
If motor cosine phi is not known, use one of the following formulas:
cos phi = motor Watts / (motor efficiency X P302 X P303 X 1.732)
cos phi = cos [ sin
-1
(magnetizing current / motor current) ]
(1) Any changes to this parameter will not take effect until the drive is stopped