| Built
In Pulse Following Synchronizes Speed of Peripheral Equipment to Primary Machine
Motion |
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| Application
Description |
| In
rotary and assembly machinery applications, there is often a requirement to
synchronize the speed of an infeed /supply conveyor or other device to the
primary motion of the main machine. This function is sometimes implemented using
expensive motion controllers and speed feedback devices that can significantly
increase the cost of the control system and machine. For simple applications
that do not require a high degree of precision positioning, a simple following
function can be suitable for synchronizing a stepper, servo, or inverter drive
to control the peripheral equipment and synch the motion to the primary machine.
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| Omron
Solution |
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| Omron
Synchronization Function is directly built in to the CPM2A and CPM2C
Programmable Controllers. Feedback from a primary machine motion can be used to
control a drive, which synchronizes the conveyor or peripheral equipment to the
machine.
A built in pulse ratio can be changed on the fly to compensate for
changes in the speed and motion of the primary machine. Several pieces of
auxiliary equipment can be easily synchronized to a master machine speed using
multiple Omron Controllers.
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| Application
Solution Diagram |
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| The
diagram shows the synchronization function in an Omron CPM2A Controller. An
encoder serves as the feedback device from the primary motion of the machine and
is connected to the PLC’s high-speed pulse input. A pulse output is produced,
which is used to control a servo, stepper, or inverter drive. A pulse ratio
factor is also available. |
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Synchronization
of machinery without using expensive motion control equipment
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Built
into the PLC for a compact integrated control package ideal for controlling
peripheral equipment and small machinery
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Can
be used in conjunction with other built in motion control functions in the CPM2A
and CPM2C controllers.
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Synchronization
can be accomplished using a variety of stand alone drive options such as
stepper, servo, and inverters.
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| Omron
Advantages |
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Eliminates
the need for interfacing a PLC to expensive motion controllers
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Provides
options for choosing the drive type best suited for the application
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Another
built in advanced motion control function in Omron’s new CPM2A and CPM2C Micro
PLC package.
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Significantly
reduces the cost and size when compared to other control solutions
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| Industries
and Applications |
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The
synchronization function is ideal for assembly, packaging, and material handling
equipment such as conveyors, hoppers, and feeders, which must operate in line
with a primary machine.
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Simple
positioning, coordinated motion, and conveyor control are ideal applications for
this function.
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Any
industry, which utilizes discrete machinery for material handling and packaging
applications, is well suited to use control systems based on this function.
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| Product
References |
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For
details, see the Installation and Operation Manuals for the CPM2A and CPM2C
Controllers |
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