Instruction manual

6. Adjusting the Efka positioning drive

The programming and setting of parameters is used to specify the

function of the sewing drive controller.

All parameter values for the corresponding sub-classes are already

assigned when the complete sewing machine is delivered. Some

pre-set values for the controller (e.g., maximum rotational speed) may

also be changed. When replacing the controller, these

machine-specific parameters must be re-specified on the new

controller.

6.1 Adjusting the positioning drive parameters

Drive parameters are set in two steps. In the first step, the function

“Auto-select” is used to set the machine class parameters. In the

second step, some pre-set parameters are changed in order to set the

machine-specific parameters in the sub-class.

6.1.1 Adjusting the parameters with the “Auto-select” function

The sewing drive controller detects which sewing machine class is

connected by measuring the auto-select resistance from the machine.

Auto-select is used to select control function and the pre-set values of

the parameters.

Caution! If the controller detects an invalid or absent auto-select

resistance, then the s ewing drive will only operated with

emergency-run functions. This serves to protect the machine from

damage.

6.1.2 Class-838 specific adjustments to the parameters of the Efka drive

Caution!

Be very careful when adjusting the parameter values. The machine c an

be damaged when settings are made improperly.

Note:

All parameter values can be reset to their default (pre-set) values by

using the Master Reset function (refer to section 6.3).

A description of parameter settings can be found at www.efka.net or in

the Efka operating instruction booklet provided by the drive

manufacturer.