CR200P

Differential color detection with Profibus connectivity

Differential color detection with Profibus connectivity

The CROMLAVIEW^® CR200P color sensor processes colors in a perceptual way (i.e. according to human perception). The two channels allow for applications that demand high standards of the sensor technology. By using the second color sensor channel this sensor can be used in different modes of operation.
For easy integration in industrial automation, the CR200P has been equipped with a Profibus interface. This interface, which is frequently used for the control of sensors and actuators in production engineering, supports data rates of up to 12 Mbit/s. The control itself is performed by a central control (SPS), which often plays an important role in standard diagnostic options.

Funktion

In the dual channel mode the sensor can be operated as two single sensors, which work with the same gain and illumination intensity.
With the activated stabilization function (CROMLASTAB^®) the sensor can be used with an external stabilization target as a single channel sensor. The symmetric design of the sensor facilitates very high drift stability against age and temperatures.
In the color difference mode, compliance and synchronism between the two sensing channels are crucial. The balancing method CROMLABALANCE^® is available for this purpose. It allows for simple and effective channel balancing over the client's entire color space. When teaching in a "zero-difference" between the two color channels, test objects can be inspected for color identity, even if the absolute color has not been fixed. A zero-difference can also be used for edge detection. Another advantage of the color difference mode is the recognition of transparent objects against changing backgrounds (e.g. transparent labels in the packaging industry). Changing backgrounds can frequently occur in terms of deviations in height or structure of the object. Also in such cases, the color difference mode facilitates the recognition of colored structures, which would otherwise be impossible with an absolute measurement.

Features

Two color sensing channels
Color differences can be detected and displayed
Up to 100 colors, respectively color differences can be stored
Quick response time from 50 µs
12 channels, with binary encoding up to 4096 output combinations
Finest color differences can be detected (ΔE < 1)
Standard interfaces: USB, RS232, 12 push-pull outputs (24 V/100 mA)
Field bus interface: Profibus DP
PC software CR-tool for parameterization and visualization of color values

Technical Data

Sensing channels	2 Sensing channels
Drift stabilization	CROMLASTAB^® can be switched off
Receiving detector	Three range photo diode
Sensitivity steps	8 (1x, 4x, 20x, 40x, 80x, 200x, 400x, 800x)
Receiving signal resolution	3 x 4096 steps
Object illumination	Power white light LED Adjustable (4096 steps) Can be switched off
Response time	≥ 50 µs
Interfaces	12 Switching outputs 2 Control inputs RS232 USB Profibus DP
Displays	20 LEDs for outputs and status
Buttons	3 Buttons for teach -in
Color resolution	ΔE_Lab < 1
On-/Off-Delay	0 ms ... 65535 ms
Color output channels	12 (up to 100 with binary encoding)
Protection standard	IP 54
Power supply	18 ... 28 VDC, max. 500 mA
Case temperature during operation	-10 °C ... 55 °C
Coupling in signal path	Via optical fiber
Case size	100 mm x 70 mm x 30 mm
Weight	295 g