Machine Reference Modes (Mn-Ms) - Parker Compax3 Series Operating Instructions Manual

Setting up Compax3
Defining the reference system
4.1.5.2
Position reference
point
44

Machine reference modes (MN-Ms)

Essentially, you can select between operation with or without machine reference.
However, when operating without machine zero, bear in mind that only operation in
continuous mode is possible.
31 position data records are possible for operation without machine zero, whereas
only 15 position data records are possible for operation with machine zero,
because the machine zero proximity switch is read in via the input I7 (X12/14) to
which address 4 was assigned previously.
The zero point for positionings in absolute mode is defined via the machine zero
and the machine zero offset.
Machine reference run
A machine reference run is required each time after turning on the system for
operation with machine reference. A START after "Power on" automatically
activates a machine zero run irrespective of the selected data record.
In a machine zero run the drive moves to the position value 0 immediately after
finding the machine zero proximity switch. The position value 0 is defined via the
machine zero offset.
Using a SinCos Multiturn absolute value encoder (Motor - Option A7) as feedback
system, the absolute position can read in when switching on the Compax3. A
machine zero run after switch-on is then not necessary.
In this case the reference only needs to be established once
at initial commissioning time
!
after an exchange of motor / feedback system
!
after a mechanical modification and
!
after replacing the device (Compax3)
!
by carrying out a machine zero run.
The machine zero run mode 35 "MN at the current position(see on page 47 )" is
appropriate for this, because it is therewith possible to operate without proximity
switch, but any other machine zero run mode is possible too – if the hardware
prerequisites are fulfilled.
When you have once re-established the reference, reset the machine zero run
mode to "without machine zero run".
Triggering of a machine zero run
A machine zero run is triggered with address 0 and START.
Note: When operating with machine zero, the address 0 is reserved for the
machine zero run.
I11 T11 192-120101 N6 - March 2004