3-2 Evaluating the Internal Resistor
3. Find the correct constant temperature Power Curve for your drive
type, voltage and frame.
Power Curves for PowerFlex 70 Internal DB Resistors
OR
Power Curves for PowerFlex 700 Internal DB Resistors
4. Plot the point where the value of AL, calculated in Step 5 of
Section 2, and the desired deceleration time (t
3
– t
2
) intersect.
5. Plot the value of PL, calculated in Step 6
of Section 2, on the vertical
axis (0 seconds).
6. Connect AL at (t
3
– t
2
) and PL at 0 seconds with a straight line. This
line is the power curve described by the motor as it decelerates to
minimum speed.
Drive Voltage Drive Frame(s) Figure Number
240 A and B 3.1
240 C 3.3
240 D 3.4
400/480 A and B 3.5
400/480 C 3.6
400/480 D 3.7
Drive Voltage Drive Frame Figure Number
400/480 0 3.13
400/480 1 3.14
400/480 2 3.15
400/480 3 Uses external DB resistors
only. Refer to Section 4
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