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LH200 Light Leak Detector
Operating Instructions
Revision D
08/11/2017
Prime Controls, Inc.
DESCRIPTION
The LH200 light sensor is designed to be a component of a light-based inspection system for finding leaks in
container ends and containers. In addition to the LH200, a complete inspection system requires: a controlling
PLC, a Prime Controls SL100 LED Strobe Lamp, and a reject mechanism. If the test system comprises
multiple lanes, where the flash energy from one lane can cross-couple into another lane, the system may
also require the use of the Prime Controls SQ100 sequencer to stagger the triggering of the individual
sensors.
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Summary of Contents for Prime Controls LH200
- Page 1 Prime Controls, Inc. DESCRIPTION The LH200 light sensor is designed to be a component of a light-based inspection system for finding leaks in container ends and containers. In addition to the LH200, a complete inspection system requires: a controlling PLC, a Prime Controls SL100 LED Strobe Lamp, and a reject mechanism. If the test system comprises...
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Page 2: Operation
OPERATION Once set up, the operation of the LH200 involves only three control signals, an ENABLE signal from the PLC or sequencer to start the test cycle, a STROBE output signal to trigger the flash illuminator, and a RESULT output signal to report the outcome of the test to the PLC. - Page 3 The dark limit is recorded in non-volatile memory and is retained through power cycling of the LH200. - Free-Run Mode The LH200 is set to free-run mode by entry of the “F” command through the serial port. Free-run mode cannot be entered if the machine is running (LH200 is receiving a periodic ENABLE signal). The operation of the LH200 in free-run mode is as follows: 1.
- Page 4 “R” is entered. After the enabled reports are listed, the LH200 asks if the user wishes to change the selection of enabled reports: Change? (Y/N). If “N” is entered, no change is made to the enabled list. If “Y” is entered, the list of available reports is displayed, one at a time, to allow the user to enable the report (enter “Y”) or disable the...
- Page 5 The result flags are D, N and L. Their meaning is as follows: D – the average dark current exceeded the dark limit N – the dark spread exceeded the spread limit L – the peak value exceeded the leak limit –...
- Page 6 TEST CYCLE DETAIL The inspection cycle comprises the following steps: 1. The LH200 begins the test cycle by awaiting the assertion of the ENABLE signal from the PLC or the SQ100 (high on gray wire, connector pin 5). 2. Prior to assertion of the ENABLE signal, the test sample is indexed into position between the sensing face of the LH200 and the illumination device..
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Page 7: Connector Pinout
Shield Connect to Common RS-232 CONNECTION The illustration below, defines the wiring requirements for accessing the serial port capabilities of the LH200 using the standard 9 Pin Female D Sub Connector (DB9). M12 PIN 6 (CABLE PINK) M12 PIN 3 (CABLE GEEN) -
Page 9: Signal Specifications
Baud rate: 38400 Serial Receive (Pin 3) RS-232 levels Baud rate: 38400 LH100 AND LH200 DIFFERENCES From an installation and operational perspective, the LH100 and LH200 are fully compatible. External hardware differences are detailed below. Feature LH100 LH200 Report LED (near connector) Off - no leak Off –... - Page 10 LIMITATIONS AND EXCLUSION OF WARRANTIES All goods purchased from PRIME CONTROLS, INC. shall be free from defects in materials, design and workmanship under normal conditions of use for one year from the date of shipment. THIS WARRANTY IS THE SOLE...