OPTIMUM
M A S C H I N E N - G E R M A N Y
Description of the connection
29 / 11 / 2006
Page
13
Description of the connection CNC Controller III and VI ; Version 2.0.1
©
2006
GB
7.3.2
Operating current and holding current
The control board disposes of several jumper positions which need to be correctly set, before
installing the CNC controller.
Operting current
The operating current moves the step motor. Over a direction signal the turning direction is
being changed. The operating current is determined over the jumper. The type plate of the
corresponding step motor indicates the values of the required setting.
Setting operating current jumper 3 to 5 :
The current has to be set on the used step motor over the jumper. If the current is too high it will
lead to a degradation of the running performances and does not perform more power!
J3, jumper 3 - for step motor 3 A
J4, jumper 4 - for step motor 4 A
J5, jumper - for step motor 6 A
When the red control lamp (red LED) is flashing, the operating current is set too high. Check the
correct jumper position with the used step motor.
“The red LED on the CNC controller flashes or flickers.“ on page 17
Holding current
The holding current provides for a safe hold during the processing breaks and a safe hold for the
axis which are not moved at the moment of processing.
Setting the holding current:
Over jumper Hold Torque 75% or 50%
It is advantagous to start with the setting 50% holding current!
If the holding current is set too high, it will lead to unnecessary heating-up!
Jumper
for
step motor type
Jumper holding current
(Hold, Torque)
