3
System Configuration
Section 1-2
• Up and down pulse inputs
• Pulse and direction inputs
The High-speed Counter Unit has a function to multiply offset phase inputs by
two or four. The resolution of the High-speed Counter Unit can be increased in
proportion to the number of pulses input from encoders.
Change Present and Set
Values During High-speed
Counter Unit Operation
The High-speed Counter Unit in normal operation uses settings that are read
when the High-speed Counter Unit is turned ON. The settings, which include
the present counter values of the High-speed Counter Unit, can be changed
anytime.
1-2
System Configuration
Discriminating Product
Sizes
In the following example, the size of each product on the belt conveyor is mea-
sured and improper-sized products are removed from the line using the sole-
noid.
The High-speed Counter Unit counts the number of pulses that is input from
the encoder while each product is passing between the emitter and receiver of
the through-beam photoelectric sensor.
When the count value of a product is not within the range preset with the
High-speed Counter Unit, the solenoid will be activated and the product will be
removed from the line.
C200H-OA221
AC Output Unit
C200H-CT021
High-speed Counter Unit
Solenoid:
Used to remove
improper-sized
products.
Through-beam
Photoelectric Sensor:
Used to sense the
products.
Incremental Encoder:
Used to sense the speed
of the belt conveyor.
Motor
Belt conveyor
C200HX
Incremental
encoder output
Photoelectric
sensor output
Count value
Discrimination
criteria
Reject
OK
Reject
Summary of Contents for C200H-CT021
Page 1: ...C200H CT021 High speed Counter Unit Operation Manual Revised December 2000 ...
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Page 4: ...vi ...