J_Gear

General

Type	ES
Offline editable	Yes
Devices supporting the parameter	Lexium LXM52 Drive, Lexium LXM62 Drive, Lexium ILM62 Drive Module
Traceable	Yes

Functional Description

The parameter represents the input of the gear box moment of inertia at the motor shaft (gear box input side).

This parameter affects the feed forward and the internal amplifying factors of the speed controller and influences the calculation of the maximum acceleration MaxAcc.

(See also calculation of adjustable values for the J_Load parameter).

NOTE: The parameter value is transferred from the master to the slave via the parameter channel of the Sercos at every access. Typically, this takes about 10 ms. However, times up to 1 s may be realized if large amounts of data are transferred on the parameter channel.

The following graphic indicates the dependency with other object parameters for rotary drives:

Example:

Entering J_Load has a direct impact on the parameter MaxAcc. A revision of MaxAcc only has an impact on ControllerStopDec if,

a Sercos phase up takes place or
the parameter ControllerStopDec is modified.