Parker EME
Setting up Compax3
192-120101 N11 C3I11T11 November 2007
89
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.
4.1.7.3
Adjusting the machine zero proximity switch
This is helpful in some cases with homing modes that work with the home switch
and motor reference point.
If the motor reference point happens to coincide with the position of the MN
initiator, there is a possibility that small movements in the motor position will cause
the machine reference point to shift by one motor revolution (to the next motor
reference point).
-
+
1
2
1: Motor zero point
2: Logic state of the home switch
A solution to this problem is to move the MN initiator by means of software. This is
done using the value initiator adjustment.
Initiator adjustment
Unit:
Motor angle in degrees
Range: -360 ... 360
Standard value: 0
Move the machine reference initiator using software
4.1.7.4
Debouncing the machine zero input (X12/14)
A majority gate is used for debouncing.
The signal is sampled every 0.5ms
The debounce time determines the number of scans the majority gate will perform.
If the level of more than half of the signals was changed, the internal status will
change.
The debounce time can be set in the configuration wizard within the range of 0 ...
20ms.
The value 0 deactivates the debouncing.
Machine reference offset
0
1
1:
MaschinezeroOffset
