SHIMPO Instruments LMS-1 User manual

LMS Luminescence Sensor
Operation Manual

The discrete output must not be connected to outputs from other
sensors (i.e. outputs from multiple sensors must not be connected
in parallel). Parallel connections may damage sensor output circuitry.

Sensor is not suitable for wash down or hazardous environments; a
separate enclosure with the appropriate ratings is recommended for
these applications.

IMPORTANT:
This product is an accessory or part of a system. Always read and
follow the manufacturer’s instructions for the equipment before con­necting this product. Comply with all applicable codes and safety reg­ulations. Failure to do so may result in damage, injury or death.

SHIMPO INSTRUMENTS

The LMS sensor combines small spot size and fast response to
achieve high-speed operation capable of detecting a wide variety
of luminescent marks and objects such as wood, adhesives, UV
inks and optical brighteners on various surfaces over a range of
50 grayscale levels. The modulated UV light source in the LMS
is focused to a 3-5mm spot and directed toward a target. The
diffused light returning to the sensor is measured. When the level
is equal to or exceeds the threshold the discrete output chang­es state. Due to the fast response of the sensor, it is suitable for
use in high-speed applications. The sensor provides a discrete
output that automatically configures to NPN and PNP. A PLC or a
computer can be used to monitor the status of the discrete output
signal.

LEARNING MODE

Two keys are provided, MARK and BKGD, which are used to set
the sensor’s detection level. The sensor output will activate when
the MARK is detected. The mark may be lighter or darker than the
background.

To Set the Sensor:

1. Place the MARK or BKGD in the sensor’s light spot and press
the appropriate key. Flashing yellow LED indicates proceed with
MARK setting, flashing green LED indicates proceed with BKGD
setting.

2. Place the other, MARK or BKGD in the sensor’s light spot and
press the appropriate key. Flashing yellow/green LED indicates
insufficient contrast error. Repeat from step 1.

SPECIFICATIONS

UV Light Source: 370 nm LED, min.100,000 hours
Sensing Distance: 28 mm
Spot Size (dia.): 3 to 5 mm
Depth of Field: +/-3 mm from focal point (approx. 28 mm)
Response Time: 25uS
Switching Frequency: 40kHz
LED Intensity: 3 levels
Gray-Scale: 00 to 50
Controls: MARK and BKGD keys
Digital Output: Auto-Detect PNP / NPN
Analog Output: 0 to 5V (20 mV resolution)
Power Indicator: Green LED
Detect Indicator: Yellow LED
Programming Indicator: Yellow/green LED
Data Retention: EEPROM non—volatile memory
Dimensions: 2.0” (51 mm) x 2.4” (61 mm) x 1.0” (25 mm)
Weight: 0.21 lbs. (95 g)
Supply Voltage: 10 to 24 VDC
Operating Current: 60 mA
Short Circuit Protection: Discrete output
Overload/Reverse Polarity Protection: Supply voltage
Operating Temperature: -20°C to 55°C
Storage Temperature: -20°C to 70°C
Housing: Plastic
Mechanical Protection: IP65
Connector: M12, 4-pin

3. Verify that the Yellow led indicates the presence of the mark.

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INSTALLATION

Install the sensor using accessory bracket LMS-BRKT or suitable
alternative bracket. Position the sensor at approximately 28mm
from the target object (measured from the sensor lens surface).
Normally the sensor may be positioned on a 15-20° angle to pre­vent interference from glossy surfaces. When using the sensor
to detect the glossy characteristic of the target, position the sen­sor perpendicular to the target. Connect the cable, LMS-CBL, to
power and outputs as required. Do not use other cable without
verifying connections and wire colors or damage to the sensor
may occur.

CONTROLS
Output LED

During normal operation the yellow LED indicates MARK and the
green LED indicates BACKGROUND. Yellow/green LED indicates
MARK or BKGD readings are being taken. MARK key Sets mark
level. After MARK is measured the LED may flash green indicating
that BACKGROUND measurement is required.

BKGD key

Sets background level. After BACKGROUND is measured the LED
may flash yellow indicating that MARK measurement is required.

OUTPUT SIGNALS
Discrete Output

The discrete output is a PNP/NPN configuration allowing the user
to provide a load on this output that is either pulled high to VDC
or low to ground. The sensor monitors this level and automatically
determines whether to operate the PNP/NPN driver. This output is
typically connected to a PLC. The output remains active as long
as the mark is recognized as indicated by the yellow LED on the
sensor.

M12 CONNECTIONS

M12

Connector

Wire Color Description

Pin 1 Brown Power 10 to 24 VDC

Pin 2 White Analog Output

Pin 3 Blue Ground

Pin 4 Black Discrete Output,

DIMENSIONAL DETAILS

PNP/NPN

CAUTION: The discrete output must not be connected to outputs
from other sensors (i.e. outputs from multiple sensors must not be
connected in parallel). Parallel connections may damage sensor
output circuitry.

Analog Output

The analog output is 0-5V with 20mV resolution (8-bit). Any stan­dard analog input channel typically available on a PLC may mon­itor this output. The analog output signal is useful in applications
where simply triggering on the threshold is insufficient. For exam­ple, constant real-time monitoring of intensity in process allows
minor fluctuations or trends to be detected permitting corrective
action to be taken. The analog output response time is slower
than the discrete output response time and should be evaluated
per the requirements of each application.

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