ARJAY ENGINEERING 2852-LS User Manual
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ARJAY ENGINEERING 2852-LS User Manual

Two point level switch
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MODEL 2852-LS
Two Point Level Switch
User Manual
Technical Support
Continental North America Toll Free 1-(800) 387-9487
Ph: +1 (905) 829-2418 Fx: +1 (905) 829-4701
A Product of Arjay Engineering Ltd.
Oakville, Ontario, Canada
www.ArjayEng.com
MODEL:
HARDWARE NO.:
SOFTWARE NO.:
SERIAL NO.:
5.1

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Summary of Contents for ARJAY ENGINEERING 2852-LS

  • Page 1 MODEL 2852-LS Two Point Level Switch User Manual Technical Support Continental North America Toll Free 1-(800) 387-9487 Ph: +1 (905) 829-2418 Fx: +1 (905) 829-4701 A Product of Arjay Engineering Ltd. Oakville, Ontario, Canada www.ArjayEng.com MODEL: HARDWARE NO.: SOFTWARE NO.:...

  • Page 2: Table Of Contents

    Model: 2852-LS User Manual Rev: 2.1 TABLE OF CONTENTS   INSTRUMENT OVERVIEW .................... 3     Features ......................3     Model Number vs. Voltage Input ................ 3     Specifications ..................... 4     INSTALLATION ....................... 6    ...

  • Page 3: Instrument Overview

    Rev: 2.1 INSTRUMENT OVERVIEW The Arjay Model 2852-LS Two Point Level Switch Alarm provides two independent alarm relays for monitoring and control of liquids or solids in a tank or vessel. The Arjay probe has an active capacitance probe that is inserted into the vessel.

  • Page 4: Specifications

    Model: 2852-LS User Manual Rev: 2.1 Specifications 12 VDC +15% /-10% or 24 VDC +15% /-10%, 250mA maximum Power Input: 100VAC – 240VAC +/- 10%, 50/60 Hz, 150mA maximum Note: DC input models must be supplied by Limited Energy power source.
  • Page 5 Model: 2852-LS User Manual Rev: 2.1 Equipment mobility Fixed Refer to Dimensional Drawing Mechanical Specification: Enclosure Rating Type 4 / IP65 Painted Steel (Blue) Type 4x / IP66 Polycarbonate (Gray) Type 4x / IP66 316 Stainless Steel Options on Enclosure...

  • Page 6: Installation

    User Manual Rev: 2.1 INSTALLATION NOTE: If any damage to the instrument is found, please notify an Arjay Engineering representative as soon as possible prior to installation. Controller Installation Choose the mounting location in accordance with good instrument practice. Extremes of ambient temperature and vibration should be avoided (see specifications and installation drawing).

  • Page 7: Probe Installation

    Model: 2852-LS User Manual Rev: 2.1 Probe Installation The probe length is custom ordered to the tank or vessel requirements. On vertical and angled installations, the probe must be long enough to reach the lowest alarm setpoint. The PMC junction box should be mounted above any risk of flooding.

  • Page 8: Figure 1 - Probe Installation

    Model: 2852-LS User Manual Rev: 2.1 THREADED ENTRY FLANGED ENTRY CONCENTRIC SHIELD ENTRY Use wrench on Lower Hex ONLY 2" Entry Typical 1- For threaded and flanged entry types, the probe must be parallel to the tank wall 2- For threaded and flanged entry types, measurement sensitivity is increased by reducing the probe to wall distance.

  • Page 9: Figure 2 - Typical Application

    Model: 2852-LS User Manual Rev: 2.1 Figure 2 – Typical Application...

  • Page 10: Electrical Installation

    Model: 2852-LS User Manual Rev: 2.1 Electrical Installation Figure 3 – Electrical Installation Overview TB1/TB2 - Relay Output 2 SPDT relay, Dry, N.O. Contact 5A @ 250 VAC (Resistive) and N.C. Contact 3A @ 250VAC (Resistive), selectable failsafe or non-failsafe, selectable high or low acting alarm, programmable time delay: 0 –...

  • Page 11: Input / Output Terminal Specification

    Model: 2852-LS User Manual Rev: 2.1 2.3.1 Input / Output Terminal Specification Input Terminals – Power Source Terminal Overvoltage Rated Voltage (V) Rated ___ HZ or Specified category Current/power Mains (A/W/VA) fluctuation  100-240V 150mA 50/60Hz  12 OR 24V 250mA ...

  • Page 12: Glossary Of Symbols

    Model: 2852-LS User Manual Rev: 2.1 Glossary of Symbols Attention, consult accompanying documents Attention, veuillez consulter les documents ci-joints. Protective Earth Fuse Terre de protection Coupe-circuit; fusible Direct Current (DC) Normally open relay contacts Courant continu Contacts travail Normally closed relay contacts...

  • Page 13: Startup And Calibration

    The unit is pre-configured and tested at the factory. However, a quick field calibration is required after power up to tune the probe to the installation conditions. See section 3.3 to calibrate the 2852-LS . Menu Flow Chart Background Information The control setup, diagnostics, and calibration are accessed using the display and keypad on the controller.

  • Page 14: Data Entry

    Model: 2852-LS User Manual Rev: 2.1 Change is password protected and allows an operator to enter or change the configuration set- up values indicated in the View. Changes will be required for the initial setup of relay setpoints, delays, span etc. or to re-set the values to the factory default.
  • Page 15 This will get you back to the main menu of “CAL ONLY”. Press arrow down until you get to “EXIT” in order to get back to main screen OR go to “Change” if different relay configurations are required. THIS COMPLETES THE SETUP AND CALIBRATION PROCEDURE FOR THE 2852-LS Two Point Level Switch...

  • Page 16: Setup And Alarm

    The factory default is 0 to provide an immediate and active response. 2852 Controller Alarms The two relays on the 2852-LS operate independently. They are named A1 and A2. The follow parameters are available to set up each of the relays.

  • Page 17: Figure 4 - No Differential Application - High Level

    Model: 2852-LS User Manual Rev: 2.1 Sample Of Single Point Alarms (No Differential) Applications ALARM POINT ABOVE CALIBRATION SETPOINTS ALARM POINT ABOVE CALIBRATION SETPOINTS ALARM CALIBRATION MODE: HIGH ^SP ALARM CALIBRATION MODE: HIGH ^SP -SENSITIVITY ADJUSTMENT depresses alarm point -SENSITIVITY ADJUSTMENT depresses alarm point i.e.

  • Page 18: Figure 6 -Differential Application - Pumping Out

    Model: 2852-LS User Manual Rev: 2.1 Sample Of Differential Applications SETTINGS: FAILSAFE: YES 2852-LS Alarm Above calibration point . PROCESS IN CONTACTS: USE COMMON (C) & NORMALLY CLOSED (NC) CONTACTS HIGH ALARM POINT LOW ALARM POINT PUMP ON PUMP OFF...

  • Page 19: 2852 Controller Network

    Model: 2852-LS User Manual Rev: 2.1 2852 Controller Network The 2852 Controller may be monitored and calibrated via RS-485 protocol compatible digital communications. Typical features are: 1. Ease of wiring in multiple level point monitoring: Up to 255 Model 2852's (or other Arjay 2800 Series level monitors) may be connected together...

  • Page 20: 2800 Series Modbus Register Mapping

    Model: 2852-LS User Manual Rev: 2.1 4.3.2 2800 Series Modbus Register Mapping Zero No. of Based DESCRIPTION TYPE 40001 Serial Number float 40003 Hardware Rev / Software Rev byte 40004 Sensitivity / Mode byte 40005 Instrument Status 40006 Model / Modbus Address...

  • Page 21: Maintenance

    Model: 2852-LS User Manual Rev: 2.1 MAINTENANCE There is no routine cleaning required for this controller.

  • Page 22: Troubleshooting

    Make sure there is no external interference and electrical noise such as agitators, high voltage interference, turbulent flow, etc  Adjust the sensitivity to the next higher value. Test after any changes to confirm an alarm ARJAY ENGINEERING TECHNICAL SUPPORT (800) 387-9487 +1 (905) 829-2418 www.arjayeng.com...

  • Page 23: Flow Charts

    Model: 2852-LS User Manual Rev: 2.1 FLOW CHARTS...
  • Page 24 Model: 2852-LS User Manual Rev: 2.1...
  • Page 25 Model: 2852-LS User Manual Rev: 2.1...

This manual is also suitable for:

2852-ls-12852-ls-32852-ls-4

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