Parker EME
Setting up Compax3
192-120114 N5 C3I22T11 June 2008 123
Machine zero modes without home switch
In this chapter you can read about:
Without motor reference point ......................................................................................... 123
With motor reference point .............................................................................................. 125
Without motor reference point
In this chapter you can read about:
MN-M 35: MN at the current position............................................................................... 123
MN-M 128/129: Current threshol
d when moving to block................................................ 123
MN-M 17.18: Limit switch as machine zero..................................................................... 124
MN-M 35: MN at the current position
The current position when the MN run is activated is used as an MN.
35
MN-M 128/129: Current threshold when moving to block
Without a MN (machine zero) initiator, an end of travel region (block) is used as
MN (machine zero).
For this the Current threshold is evaluated if the drive pushes against the end of
the travel region. If the limit is exceeded, the MN is set. During the homing run
(MN), the error reaction "following error" is deactivated.
The homing offset must be set so that the home (reference point) for positioning
lies witihn the travel range.
MN-M 128:Travel in the positive direction to the end of the travel region
MN-M 129:Travel in the negative direction to the end of the travel region
Caution!
Wrong settings can cause hazard for man and machine.
It is therefore essential to respect the following:
Choose a low machine zero speed.
Set the machine zero acceleration to a high value, so that the drive changes di-
rection quickly, the value must, however, not be so high that the limit threshold is
already reached by accelerating or decelerating (without mechanical limitation).
The mechanical limitation as well as the load drain must be set so that they can
absorb the resulting kinetic energy.
Please observe: