Setting
up Compax3
C3I20T11 / C3I32T11
128
192-120103 N13 C3I20T11 / C3I32T11 December 2010
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).
Via status value “Distance MN sensor - motor zero”, (O1130.13) you can check if
the distance between machine home sensor and motor zero point is too short.
-
+
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: -180 ... 180
Standard value: 0
Move the machine reference initiator using software
As an aid you can use the status value “distance MN sensor - motor zero” in the
“Positions” chapter under “status values“
Machine reference offset
0
1
1:
Machine reference offset
The machine reference offset is used to determine the actual reference point for
positioning.
That is: Zero point = Machine zero + Machine zero offset
Note: If the machine zero proximity switch is at the positive end of the travel range,
the machine zero offset must be = 0 or negative.
A change in the machine reference offset does not take effect until the next
machine reference run.
Machine zero speed and acceleration
With these values you can define the motion profile of the machine zero run.
