Motor Torque vs Speed

When the Motor and Inverter Performance form opens, initially just the motor curves are shown in a 1 Quadrant view.

	Motor rated peak torque characteristic curve
	Motor rated continuous torque characteristic curve
	Application RMS Torque
	Application Profiles Each motion segment is displayed Segments where the start and end velocities are the same are shown as a dot
	Show/Hide/Highlight Segments in the chart When checked, the corresponding profiles are shown in the chart When selected, the corresponding profiles are highlighted in the chart Moves are grouped by their 4 Segments - Acceleration, Constant Velocity, Deceleration and Dwell Select 1 or more Segments, then right-click for the option to Show or Hide the selected Segments
	Motor Rated Peak Torque Curve Bus Voltage Display only. Not settable by the user. The curve is automatically chosen by the program based on the power group nominal bus voltage Click the drop down to see what other voltage curves are possible "FW" is shown when the motor rated peak field weakening (FW) curve If FW is applied to the motor, the "FW" text is highlighed in pink, same as the pink shaded FW zone in the chart
	Motor Rated RMS Force Curve Each rated force curve is defined with a temperature rise [K] wrt ambient temperature Specify the temperature rise curve
	Motor Load Factor Effective load factor including ambient and elevation de-rating factors Some vendors have additional factors that are also included. For the details of additional factors, hover the mouse over for the tooltip which provides additional details as needed
	Specify the number of Motors in parallel
	PWM Frequency Specify the inverter PWM frequency The higher the frequency usually results in lower rated peak and cont currents
	Inverter Motor Control Mode There are three options: 'Auto', 'No FW' & 'FW', where FW = Field Weakening Auto: 'Auto' is the recommended selection If the motor data has both 'No FW' and 'FW' curves, then the program chooses the motor 'FW' curve Else it choses the motor curve that is available for the selected motor No FW: The user forces the use of the 'No FW' curve FW: The user forces the use of the 'FW' curve
	Drive Load Factor Effective load factor including ambient and elevation de-rating factors
	Specify the number of Drives in parallel

Select the 'Show Inverter Curves' toolbar button to display the inverter rated peak and continuous motor torque curves.

Inverter rated peak torque characteristic curve

Solid line 0 - 2,000 rpm: Inverter rated peak current
Solid line 2,000 - 3,600 rpm: Infeed rated peak output power
Dotted line 2,400 - 3,600 rpm: Regen/Bleeder rated peak power

Inverter rated continuous torque characteristic curve

0 - 1,300 rpm: Inverter rated cont current
1,300 - 3,600 rpm: Infeed rated cont power

Field Weakening (FW) Zone where Id<>0

The chart shaded area shows where the motor operates using Field Weakening (where the field current, Id<>0)
The Motor data must have valid FW curve data, and the Inverter Control Mode must be "Auto" or "FW" mode
"FW" is shown when the motor rated peak field weakening (FW) curve
If FW is applied to the motor, the "FW" text is highlighed in pink, same as the pink shaded FW zone in the chart

When the motor or drive are operating at a higher ambient temperature and/or elevation above sea level, an enviromental load factor (LF) is applied. In this case, two curves are shown, the original where LF = 1, and the effective curve with the LF.

	Inverter rated peak torque characteristic curve Solid line 0 - 2,000 rpm: Inverter rated peak current Solid line 2,000 - 3,600 rpm: Infeed rated peak output power Dotted line 2,400 - 3,600 rpm: Regen/Bleeder rated peak power
	Inverter rated peak torque characteristic curve with the environment de-rating load factor (LF) Solid line 0 - 2,500 rpm: Inverter rated peak current Solid line 2,100 - 3,600 rpm: Infeed rated peak output power Dotted line 2,500 - 3,600 rpm: Regen/Bleeder rated peak power
	Inverter rated continuous torque characteristic curve
	Inverter rated continuous torque characteristic curve with the environment de-rating load factor (LF)
	Motor rated continuous torque characteristic curve
	Motor rated continuous torque characteristic curve with the environment de-rating load factor (LF)

Select the 'Show 2 Quadrants' toolbar button to display 2 Quadrants - Motoring (+ve torque) & Generating (-ve torque) quadrants. Note that the "Regen/Bleeder rated peak power" (dotted line) is drawn only in the generating quadrant.

Motor Torque vs Speed

Motor Curves, Data Panel & Segment Selection

Drive Curves, Field Weakening Zone

Curves with Load Factor (LF)

2 Quadrants

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