Emerson Epsilon Eb Series Reference Manual page 32

Figure 13: Torque Tab
Step 5: Entering Load Parameters
The load on the motor is specified by the Inertia Ratio and Friction parameters. Application
requirements are specified by the Response adjustment. If more accurate tuning is required,
see the "Tuning Procedures" section.
Note
Also, refer to the Enable High Performance Gains and Feedforward Gains features.
Inertia Ratio
Inertia Ratio specifies the load to rotor inertia ratio and has a range of 0.0 to 50.0. A value of
1.0 specifies that load inertia equals the rotor inertia (1:1 load to motor inertia). The drives
can control up to a 10:1 inertia mismatch with the default Inertia value of 0.0. Inertial Ratio
mismatches of over 50:1 are possible with some minimal additional adjustments.
Note
If the exact inertia value is unknown, the value that is entered should be conservative,
because values higher than the actual can cause the motor to oscillate.
Friction
This parameter specifies the viscous friction component of the load and has a range of 0.0 to
100.0. The units are percent continuous torque increase per 100 RPM. This value is used to
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