Resumen del contenido incluido en la página 1
Where Do I Find Everything I Need for
Process Measurement and Control?
OMEGA…Of Course!
Shop online at omega.com
User’s Guide
TEMPERATURE
Thermocouple, RTD & Thermistor Probes,
Connectors, Panels & Assemblies
Wire: Thermocouple, RTD & Thermistor
Calibrators & Ice Point References
Recorders, Controllers & Process Monitors
Infrared Pyrometers
PRESSURE, STRAIN AND FORCE
Transducers & Strain Gauges
Load Cells & Pressure Gauges
Displacement Transducers
Instrumen
Resumen del contenido incluido en la página 2
SPECIFICATIONS Step One Range: LVCN704: 2" to 4' LVCN700 Series (5 cm to 1.2m) Enclosure (Top View) LVCN709: 4" to 9.8' (10 cm to 3m) LVCN716: 4" to 16.4' (10 cm to 5m) LVCN126: 8" to 26.2' (20 cm to 8m) Repeatability: 0.25" (6 mm) Adjustability: Over entire range Hysteresis: LVCN704/709: 0.5" (1.2 cm) (single set point) LVCN716/726: 1" (2.5 cm) (single set point) Beam width: LVCN704/709: 2" (5 cm) dia. LVCN716/726: 3" (7.6 cm) dia. 5.2" (133 mm) Dead band: LVCN704: 2" (5 cm) LVCN709/716: 4" (10
Resumen del contenido incluido en la página 3
INTRODUCTION TECHNOLOGY Step Two Step Three A. Application: The general purpose ultrasonic level switch pro- About this Manual: PLEASE READ THE ENTIRE MANU- vides non-contact level detection up to 26’ or 8m with 3 relays. Each AL PRIOR TO INSTALLING OR USING THIS PRODUCT. This relay can be configured on a single set point alarm, two latched set manual includes information on the LVCN700 series points for automatic fill or empty, two set points for out of bounds Ultrasonic Level Switch. Please r
Resumen del contenido incluido en la página 4
PREPARATION CALIBRATION Step Four Step Five A. Supply Voltage: The power supply voltage should never exceed A. Introduction: The switch has two modes, the RUN and CAL the maximum rating of 250 VAC for the LVCN700 series AC switch modes. In the RUN mode, the switch is operational and the relay(s) or 28 VDC for the LVCN700-DC series switch. will energize or de-energize at the calibrated set point distances. In the CAL mode, the relay set point distances and states may be target-cal- LVCN700 serie
Resumen del contenido incluido en la página 5
CALIBRATION PROGRAMMING Step Six Step Seven B. Calibration Tools: To target calibrate the switch set points, you A. Programming a Relay Channel: The relay set points are tar- get calibrated using the appropriate HIGH and/or LOW two key- will need the appropriate power supply (95-250 VAC or 12-28 VDC stroke button sequence at each target distance (D1=distance one, D2 for DC version), tape measurer, flat reflective target such as a wall, and = distance two and D3 = Distance 3) per the following lo
Resumen del contenido incluido en la página 6
PROGRAMMING PROGRAMMING Step Eight Step Nine C. Programming a High and Low Level Out of Bounds D. Programming Automatic Fill: After having powered the switch with the appropriate supply voltage, entered the CAL mode, Alarm: After having powered the switch with the appropriate supply voltage, entered the CAL mode, selected a relay channel and erased selected a relay channel and erased any previously input set points, any previously input set points, follow the below procedure: follow the below pr
Resumen del contenido incluido en la página 7
PROGRAMMING PROGRAMMING Step Ten Step Eleven E. Programming Automatic Empty: After having powered the Programming Duplexing Pump Control: After having powered switch with the appropriate supply voltage, entered the CAL mode, the switch with the appropriate supply voltage, entered the CAL selected a relay channel and erased any previously input set points, mode, selected relay channel 1 and erased any previously input set follow the below procedure: points, follow the below procedure: 1. Stretch
Resumen del contenido incluido en la página 8
PROGRAMMING INSTALLATION Step Twelve Step Thirteen Programming Duplex Pump Control (continued): Do not install at Do not install with- Duplex Programming angle relative in 3” of (Backup) to the liquid tank side wall Set Point Box Insert Tape Distance Table Do not install Do not install 11 with objects in applications Target in the beam Wall with vacuum VACUUM 12. Press the HIGH button for the first key-stroke and the Relay LED will blink once. 13. Press the HIGH button again for the second
Resumen del contenido incluido en la página 9
WIRING TROUBLESHOOTING Step Fourteen Step Fifteen A. Power LED SOLID GREEN in RUN Mode: During normal Warning operation in the RUN mode, the PowerLED will remain solid GREEN indicating that the switch has power and is tracking the level. To prevent damaging the relays, the use of an appropriate motor starter or secondary relay is ALWAYS recommended The RED Relay LEDs will be ON or OFF as programmed per the cur- when actuating pumps or valves. rent level state. A. Wiring a LVCN700 series (95-250
Resumen del contenido incluido en la página 10
OPERATION Step Sixteen Functional Chart for Relay On/Off Operations Backup Primary Duplexing Control Stop Operation Energize Relay 1 De-Energize Energize Relay 2 De-Energize Backup Primary Alternating Control Operation Stop Energize Relay 1 De-Energize Energize Relay 2 De-Energize Start Automatic Empty Stop Operation Energize Relay X De-Energize Stop Automatic Start Fill Operation Energize Relay X De-Energize High Out of Low Bounds Operation Energize Relay X De-Energize
