00196044-05 - sg x und x4i fse_en.pdf - 第247页
C&P20A Parts Overview with Function Descr iption Overview S tudent Guide (FSE) SIPL ACE X Series and X4I Edition 01/2009 EN C&P20A 247 Measurement System with Hall Sensors – Function: The sensor de tects the mo…
C&P20A
Overview Parts Overview with Function Description
Student Guide (FSE) SIPLACE X Series and X4I
C&P20A Edition 01/2009 EN
246
7.2.3.6 DP drive
DP Drive - Function
DP axis
The DP axis is responsible for turning the
component into the correct placement position
within a set time. The hollow shaft of the DP axis
provides vacuum and air blast to the nozzle.
The complete DP drive can be replaced during
service work.
Legend
1. Control board for DP motor
2. Motor
3. Linear guide rails
4. Vacuum connection
5. Measuring system: resolution 72digits/°
6. Dead indexing plate
7. Filter disk
The DP drives are controlled by the DP
master, in accordance with the counter pulse
and set value (pickup angle, placement angle
and correction angle after Vision).
The DC motor is monitored by a measurement
system attached to the motor axis.
C&P20A
Parts Overview with Function Description Overview
Student Guide (FSE) SIPLACE X Series and X4I
Edition 01/2009 EN C&P20A
247
Measurement System with Hall Sensors – Function:
The sensor detects the movement of ferromagnetic material (toothed wheel) through changes to the
magnetic flow.
If one element is opposite a ferromagnetic tooth and another opposite a gap, this causes a one-sided
increase in induction.
The difference arising between the two elements alters the polarity once the toothed wheel moves.
This change is evaluated, digitized and used to address or give feedback in closed-loop control.
Due to the mechanical arrangement, there is only one 0° position in each segment.
7.2.3.7 Star motor
The star motor has a brushless three-phase drive
with integrated measurement system.
The motor shaft has a hollow design. This enables
compressed air to be supplied to the holding circuit
of the 20 segments.
The vacuum in the holding circuit is measured via
the connection (4).
The air blast and vacuum in the pickup/placement
circuit are measured via the connection (5).
The star motor is not a spare part.
Legend
3-phase alternating current drive (1)
Incremental measurement system (2)
Compressed air connection for hold circuit (3)
Flange on the motor shaft (6).
C&P20A
Overview Parts Overview with Function Description
Student Guide (FSE) SIPLACE X Series and X4I
C&P20A Edition 01/2009 EN
248
Star Drive
See also:
J
7.2.5.1 Overview of Air Blast Supply [
J
251]
J
7.2.5.2 Overview of Vacuum Supply [
J
252]
The star motor is a brushless three-phase
drive with sinus commutation.
An optical measurement system is used for
both commutation and recognition of the rotary
angle. This supplies the track signals A, B and
the zero pulse.
The motor is controlled with the help of these
track signals. The actual values of the position
are evaluated on the axis controller. The servo
unit enhances performance and is supplied
with 2-phase current from the axis controller
board. (The third phase is calculated
automatically.)
A flange is installed on the motor shaft. This
flange is screwed to the star carrier. The
smoothed distributor disc (1) is located
between the flange and the star carrier.
The motor shaft has a hole for the compressed
air supply, used to feed the holding circuit.
The smoothed distributor disc enables
vacuum and air blast to be measured in the
hold circuit (3) and placement/pickup circuit
(2).