Section 1
General Information
4-20 Programming & Operation
MN718
Table 4-3 Level 2 Parameter Block Definitions
Continued
Block Title
Parameter
Description
AUTO TUNING
CALC Presets
CMD Offset Trim
CUR Loop COMP
Stator R1
Flux CUR Setting
Feedback Tests
Slip FREQ Test
SPD CNTRLR
CALC
The Auto Tune procedure is used to automatically measure and calculate certain
parameter values. Dynamic Brake Hardware is required to perform “Slip Freq Test”
and “Spd Cntrlr Calc” autotuning test. Occasionally, the Auto Tune procedure cannot
be run due to various circumstances such as the load cannot be uncoupled from the
motor. The control can be manually tuned by entering the parameter values based on
calculations you have made. Refer to “Manually Tuning the Control” in the
Troubleshooting section of this manual.
This procedure loads preset values into memory that are required to perform Auto Tune.
Always run CALC Presets as the first step of Auto Tune.
This procedure trims out voltage offsets for the differential analog input at J1-4 and J1-5.
Measures current response to pulses of one half the rated motor current.
Measures motor stator resistance.
Sets motor magnetizing current by running motor at near rated speed.
Checks the values for Encoder Lines per revolution and encoder alignment parameters
while the motor is running at near full rated speed. Test will automatically switch
encoder phasing to match motor rotational direction.
Calculates motor Slip Frequency during repeated motor accelerations.
Should be performed with the load coupled to the motor shaft. Sets the motor current to
acceleration ratio, Speed INT gain and Speed PROP gain values. If done under no
load, the Integral gain will be too large for high inertia loads if the PK Current Limit is
set too low. If the control is too responsive when the drive is loaded, adjust the PK
Current Limit parameter to a greater value and repeat this test.
LEVEL 1 BLOCK
ENTERS LEVEL 1 MENU
Summary of Contents for 18H Series
Page 1: ...SERIES 18H AC Flux Vector Control Installation Operating Manual 9 97 MN718 VECTOR DRIVE ...
Page 105: ...Section 1 General Information 5 18 Troubleshooting MN718 ...
Page 109: ...Section 1 General Information 6 4 Manual Tuning the Series 18H Control MN718 ...
Page 144: ...Appendix C Appendix C 1 MN718 ...