Parker EME
Setting up Compax3
192-120103 N13 C3I20T11 / C3I32T11 December 2010
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
MN-M 35: MN (machine zero) at the current position
The current position when the MN run is activated is used as an MN.
35
Due to encoder noise it is possible that a value <> 0 is set when teaching to 0.
If end limits = 0, an end limit error may occur during homing run.
MN-M 128/129: Stromschwelle while moving to block
Without a MN (machine zero) initiator, an end of travel region (block) is used as
MN (machine zero).
For this the Stromschwelle is evaluated if the drive pushes against the end of the
travel region. When the adjusted current is exceeded, the Homing is set. During the
homing run (MN), the error reaction "following error" is deactivated.
The machine zero offset must be set so that the zero point (reference point) for
positioning lies within 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
direction 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.
With a bad feedback signal or high controller gain (fast controller or high inertia or
mass) the machine zero might not be detected.
In this case it is necessary to use the control signal filter (O2100.20) or the
velocity filter (O2100.10).
Please note:
Please observe:
