MA7200 PLUS Operating Manual
TECO – Westinghouse Motor Company Cn-46 - Cn-57 Parameter Details
Cn-46
Pole Number of Motor
(2 - 32)
Cn-45 and Cn-46 must meet the following relationship:
32767
46
02
45
2
Cn
Cn
x
Cn
x
If not, an error message
“PG Parameter Setting Error” will be displayed
Cn-47
ASR Proportion Gain 1(0.00 – 2.55)
Cn-48
ASR Integral Gain 1 (0.1 – 10.0s)
Set the proportion gain and integral time of the speed control (ASR).
Cn-49 ASR Proportion Gain 2 (0.00 – 2.55)
Cn-50 ASR Integral Gain 2(0.1 – 10.0s)
Use these constants to set different proportional gain and integral time settings for high-speed operation.
Output
Frequency
0%
Cn-49
Cn-47
100%
Proportional
Gain
Output
Frequency
0%
Cn-50
Cn-48
100%
Integral
Time
Fig. 9.2.2.11 ASR Proportional Gain and Integral Time
Cn-51
ASR Upper Bound
Cn-52
ASR Lower Bound
The settings of Cn-51 and Cn-52 will limit the ASR range.
Cn-53
Excessive Speed Deviation Detection Level (1 – 50%)
This parameter sets the level of detecting the PG speed deviation. The value of Cn-02 (Max. frequency) is
referenced as 100%, the default unit setting is 1%.
Cn-54
Overspeed Detection Level (1 -120%)
Set this parameter for detecting overspeed. The value of Cn-02 (Max. frequency) is referenced as 100%, the
default unit setting is 1%. Please refer to the setting of Sn-53.
Cn-55
PID Integral Upper Bound (0 – 109%)
Cn-56
PID Primary Delay Time Constant (0.0 – 2.5s)
Refer to “APP-1 PID Application Note” for more details.
Cn-57
Motor Line-to-Line Resistance R1 (0.001 – 60.000
Ω
) (See parameter summary)
This parameter is used to set the motor’s terminal resistance (including the motor external cable resistance)
in Ohm’s
Ω
.
The default setting depends upon the inverter capacity and does not include the motor external motor cable
resistance.
This value will be automatically set during auto-tuning. See “
Appendix A
Auto-tuning Procedure / Sensorless
Vector Control”
Increase the setting when the torque is not high enough at low speed.
Decrease the setting when the torque is too high and cause an overcurrent trip at low speed.