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Using the CS2 With a Rotary-Pulse-Encoder (RPG) for Counting Objects and Defects
Sense Threshold
Base Threshold
Sense Color
Base Color
Data Ready -
CS2
Data Ready+
Sense Limit -
Sense Limit +
Base Limit -
Base Limit +
External Trigger -
External Trigger +
Case
Sense Threshold
Base Threshold
Common
Sense Color
Base Color
Common
Data Ready -
CS2
Data Ready+
Sense Limit -
Sense Limit +
Base Limit -
Base Limit +
Common
24V +
External Trigger -
External Trigger +
Case
Delta Computer Systems, Inc., 11719 NE 95th Street, Vancouver, Washington 98682-2444 (360) 254-8688
Common
Common
Common
24V +
Example Using the CS2 with an Optimizing Computer
Optimizing Computer
+
-
Isolated Differential
Analog Inputs 0-10Vdc
+
-
5V
2.7K
+
-
+
-
+
-
Phase A
-
Open Collector
+
NPN
RPG
+
-
-
Output
Power
+
24Vdc
Phoenix
- Sensor
CM 90-PS-110 AC/24
Order No. 2943408
Power
or equiv.
+
24Vdc
Phoenix
CM 90-PS-110 AC/24
Order No. 2943408
or equiv.
email@deltacompsys.com http://www.deltacompsys.com
Defect Counter
Object Counter
Phase A
Open Collector
NPN
RPG
+
-
-
Output
Power
+
24Vdc
Phoenix
CM 90-PS-110 AC/24
- Sensor
Order No. 2943408
Power
or equiv.
+
24Vdc
Phoenix
CM 90-PS-110 AC/24
Order No. 2943408
or equiv.
In applications that require more sophisticated
filtering, thresholds, or limit algorithms, CS2's
analog outputs and inputs provide an easy interface
to an optimizing computer. As shown, the analog
outputs are read each time the Data Ready isolated
NPN output goes from ON to OFF. The
A/D
optimizing computer then processes the analog
Trigger
information. Remember, the analog data provided
TTL or CMOS
by the CS2 is not absolute color information, but
relative values.
In this example the Base and Sense Threshold
analog inputs are not used. If desired, these can be
used to control of the Base and Sense Limits
setpoints. By controlling the setpoints, the
optimizing computer can use the CS2's two
isolated NPN outputs for control. Contact Delta
for additional information.
CS2 Color Scanner
To synchronize CS2's
scan with an external
event, use the external
trigger input. In this
example, a new scan is
started every time a
pulse is received from
the RPG. The Sense
Limit output is used to
count the number of
dark areas (defects)
seen, while the Base
Limit output is used to
count the number of
objects.
7
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