Line Follower Head LH500 is a sensor that optically detects register lines or patterns printed on a web and, in combination with a controller (*1), can be used to form an EPC (Edge Position Control) and LFC (Line Follower Control) system.
Line Follower Head LH500 stores detected lines as image information, which it uses to perform pattern matching and comparison operations on image information during operation. With this new system, even if register lines and printing accessories are mixed, the stored lines are always tracked.
*1 Liteguide controller AE1000/AE900L, Web Guide amplifier EH321A
This is an example of using a combination of LH500 and a Liteguide controller with a slitter machine. The register lines or patterns printed on a web are detected using LH500. Then, so that the line always passes through the reference position, the unwinding reel shifts in the opposite direction from the deviation to cancel out irregularity, stretching, shrinking, uneven thickness, etc., of the web, enabling high accuracy slitting.
Specifications Spotlight distance Detection range Pattern memory width Light source Output Detection element Pixel resolution Power supply Ambient temperature Laser Body material Outer dimensions Mass Cables
|With diffuser plate: 1 mm
(from web surface to diffuser plate surface)
No diffuser plate: 15 mm
(from web surface to main unit surface)
|7 mm (with reference to memory pattern position)|
|3 mm (main unit center)|
|Blue and red high luminance LED|
|1) Position signal (voltage output):||0.7 to 4.3 V DC (High) 0.07 to 0.43 V DC (Low)|
|2) Actuator lock signal:||Open collector output 30V, 0.1 A or less ON conditions: pattern errors or outside of pattern field of view, in search mode|
|CCD linear image sensor|
|+15V DC, 250 mA / -15 V DC, 30 mA|
|0 to +50 ºC (no condensation)|
|Class 2 (IEC), ON/OFF switch(for laser pointer)|
|108 (H) × 58 (W) × 50 (D) mm (projected part is not included)|
|Main unit: 0.5 kg Screw guider: 0.5 kg|
|LH500 cable (optional) Model: MD0002640-70
Conversion cable (optional) Model: MD0002640-80