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1 - 20 S tudent Guide SIPLACE X 13 MTC 2 Edition 09/2005 20 13.2.3 Inst allation MTC 2 The MTC 2 can only be run in conjunction with a SIPLACE st ation and not as an independent ma- chine. Th e settings (m achine d ata) …
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Student Guide SIPLACE X
Edition 09/2005 13 MTC 2
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13.2.2 Reference position run
When the MTC 2 is switched on, a reference position run needs to be performed on the servo
axes, as for the SIPLACE station. If the MTC 2 remains switched on when the SIPLACE station
is switched off and back on, it reports that it has already been referenced.
During the reference position run, both towers move into their reference positions simultaneously.
The two feed axes are moved first and then the two lifting axes.
Each axis first moves to its physical home position then checks the position of the two software
limit switches and finally stops in the software zero position (this corresponds to the relevant zero
offset of the physical home position). The positions adopted by the axes are then defined as ref-
erence and calibration positions.
The reference run for an individual axis is performed as follows:
– The current zero offset is sent to the Masterdrive.
– The controller queries the "neutral position" of the light barrier and waits for a rising edge.
If the axis is already positioned in the light barrier, it issues a "HIGH" signal. The axis moves in
a positive direction until the light barrier delivers a falling edge. The axis then moves in the neg-
ative direction again.
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If the axis is not positioned in the light barrier, it issues a "LOW" signal. The axis moves in a
negative direction.
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– The axis moves in the negative direction until the light barrier delivers the necessary rising
edge and the first rotor zero position (index) has been found.
This procedure is necessary, since the zero pulses of the resolver angular encoder are re-
peated with each revolution and thus appear several times within the possible travel range.
– The axes move to both software limit switches in the maximum and minimum positions to within
a few millimeters, to check the saved data.
– Finally, they move to the current zero offset.
NOTE
If the axes are not moved completely to the software limit switches and an error message appears
on the screen for the motor controllers (Masterdrive), one of the axes must be calibrated again.
When the axes have moved to all four reference positions, the SIPLACE station searches for the
two fiducials on the feed axes. The position which is found is used later to define the pick-up po-
sition of components. The fiducials must be available in the MVS file of the line computer.
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Student Guide SIPLACE X
13 MTC 2 Edition 09/2005
20
13.2.3 Installation MTC 2
The MTC 2 can only be run in conjunction with a SIPLACE station and not as an independent ma-
chine. The settings (machine data) are saved in the battery backed memory of the machine con-
troller and are only valid for this particular machine.
When the MTC 2 has been delivered, the following steps must be performed before the first time
the machine is used:
➠ Check the basic height and if necessary set it (see the User Manual).
➠ Check that the power supply has been set correctly (see Chapter 13.3.14 or Adjustment In-
struction).
➠ Check that all axes can move freely.
➠ Check the toothed belt for correct tension and damage: (seeAdjustment Instruction)
If there is evidence of damage to the toothed belt, it must be replaced (see the Service Instruc-
tions).
➠ Prepare the SIPLACE station (see Chapter 13.2.6).
➠ Dock the MTC 2 to the SIPLACE station (see the User Manual).
➠ Switch on the SIPLACE station and the MTC 2.
➠ Log on to the station computer software at the Service access level.
➠ Start SITEST.
➠ In the basic view, switch to the menu for the MTC 2.
➠ Perform a reference run on the MTC 2.
➠ Perform a reference run on the SIPLACE station.
➠ Perform a functional test on the safety equipment by carrying out each of the following actions
individually during subsequent reference runs:
➠ Press the EMERGENCY STOP button.
➠ Open the protective doors.
➠ Leave the tower locking mechanism open before the reference run.
There must be an EMERGENCY STOP and a corresponding error message must be output
on the screen.
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➠ Undo the relevant action and confirm the error message.
