LEESON SM4 Series Flux Vector - Manual (Page 42)

41
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) The drive can only be restarted if the error message has been reset