Performance Motion Devices CME N Series, Руководство пользователя

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ION/CME N-Series Digital Drive Developer Kit User Manual 51
3
3.4.3 Conversion Factors, Medium Power Units
The following table provides electrical conversion factors for medium power level N-Series ION units (P/Ns:
DD4X1X0056/06).
These factors convert various integer Magellan IC command arguments (referred to as having units of counts) to
physical quantities such as amperage, volts, etc... For more information on the Magellan motion control IC refer to
the
Magellan Motion Control IC User Guide . For more information on C-Motion commands refer to the C-Motion/PRP
II Programming Reference .
3.4.4 Defaults & Limits, Medium Power Units
The following table provides default values, medium limits and high limits for various specifiable drive-related
parameters for low power level N-Series ION units (P/Ns: DD4X1X0056/06).
I
2
t continuous current limit, step
motor
1.5 A 0.0 A 1.5 A
I
2
t energy limit, Brushless DC
Motor
2.95 A
2
sec 0.0 A
2
sec 2.95 A
2
sec
I
2
t energy limit, DC Brush Motor 3.63 A
2
sec 0.0 A
2
sec 3.63 A
2
sec
I
2
t energy limit, step motor 2.95 A
2
sec 0.0 A
2
sec 2.95 A
2
sec
Unit
Example C-Motion
Commands Scaling Example usage
Amps GetCurrentLoopValue .733 mA/count* A command request to read the
ActualCurrent parameter returns a value
12,345. This corresponds to a current of of
12,345 counts * 0.733 mA/count = 9.049
Volts SetDriveFaultParameter
GetBusVoltage 10.0 mV/count To set an overvoltage threshold of 50V, the
command value should be 50 V *1,000 mV/
V / 10.0 mV/count = 5,000
Temperature SetDriveFaultParameter
GetTemperature .0039 °C/count To set an overtemperature threshold of
65 °C, the command value should be 65 °C
/ .0039 °C/count = 16,667
I
2
t continuous
current
SetCurrent .733 mA/count
To set an I
2
t continuous current of 4.0A, the
command value should be 4.0A * 1,000 mA/
A / 0.733 mA/count = 5,457
I
2
t energy
SetCurrent
.0590 A
2
Sec/count To set an I
2
t energy of 20.0 A
2
Sec, the
command value should be 20.0 A
2
Sec /
0.0590 A
2
Sec/count = 339
Setting Default Setting Low Limit High Limit
Overtemperature limit 75.0 °C 0 °C 75.0 °C
Overtemperature hysteresis 5.0 °C 0 °C 25.0 °C
Overvoltage limit 60.0 V 10.0 V 60.0 V
Undervoltage limit 10.0 V 10.0 V 56.0 V
I
2
t continuous current limit,
Brushless DC motor
5.5 A 0.0 A 5.5 A
I
2
t continuous current limit, DC
Brush motor
7.1 A 0.0 A 7.1 A
Setting Default Setting Low Limit High Limit