➢ Since both directions are rotatable within the set range of movement, please confirm the
range or direction of movement; and ensure that the load runs in a safe journey.
➢ If the presumed inertia under default parameters runs jitter, indicating that the present load
inertia is too large, please switch to large inertia mode (P2-03.3=1) and operate again. It is
also possible to set the initial inertia to about twice the current one and execute again under
larger loads.
➢ Driver inertia ratio recognition upper limit is 200 times (parameter upper limit is 20000). If
the estimated inertia ratio is exactly 20000, it means that the inertia ratio has reached the
upper limit and can not be used, please replace the motor with larger rotor inertia.
Other notes
➢ At present, the inertia switching function is not supported, and the second inertia ratio is
invalid.
➢ The inertia ratio upper limit changes to 500 times for the driver firmware 3700 and higher
version (parameter upper limit value is 50000).
6.2.3 Operation tool
The presumptive tools of load moment of inertia are driver panel and XinjeServo software.
Note: driver firmware version can be checked through U2-07.
6.2.4 Operation steps
Estimate the inertia through the driver panel
1. Parameter setting
The recommended parameters of P2-17 are 500 rpm or more. Low instruction speed will lead to
inaccurate identification of inertia ratio.
2. Execute the inertia identification
Before inertia identification, please confirm the direction of servo rotation by using F1-00 jog motion
function. Initial direction of servo operation is determined by INC or DEC at the beginning of inertia
identification.
If the servo jitter is under the adaptive default parameters, please switch to the adaptive large inertia
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