BRO_MERCURY 2e_EN

MERCURY 2e

Intrinsically

Safe

Operator

Interface

EEx ia IIC T4

The Versatile Operator Interfacefor Hostile-areas

HAZARDOUS AREAS

HOSTILE ENVIRONMENT

ALL WEATHERS

Mercury 2e is based on the successful Mercury 2 operator interfaceTerminal, offering enhanced display and Graphics capabilities, whichnot only improve the operating efficiency and flexibility, but alsosignificantly increase the readability and contrast.

Designed for use in Hazardous Areas, the rugged construction andIntrinsically Safe certification enable it to be used in Zone 0 locationsin the continuous presence of flammable vapours.

Because Mercury was designed to IP65 for outside use and canoperate in temperatures from -20oC to + 50oC, it is well able to with-stand extreme weather conditions and is also appropriate for areaswhere washdown procedures are necessary.

Simple to install, easy to use and maintenance-free, Mercury is readilyinterfaced to most plant control systems. Set-up options forcommunications configurations in single or multi-drop mode, togetherwith other user functions, are selected from the keypad and stored innon-volatile memory via a password protected routine.

Plug-in options for the Mercury 2e use state-of-the-art technology.The high security ‘Wiegand effect’ card reader, the bar code wandwith its decoder and the external contact status inputs are all certifiedIntrinsically Safe. Recently launched is a new IS Laser Scanner forlong range, non-contact bar-code reading.

The full function keypad allows the operator to enter data andcommands. A beeper confirms key strokes and allows the hostcomputer to give audible warnings.

Large and small character text can be displayed simultaneously withGraphics images on the high contrast Liquid Crystal Display.

Mercury 2e is designed for use with process computers, PLCs or othercontrol systems capable of serial communication and operates as adumb terminal, similar to a standard VDU. The messages it displaysand the responses to keyboard inputs are determined solely by thesoftware in the host control system to which it is interfaced.

Mercury 2e Terminals also forms part of the Autoload II truck, railand ship loading systems, designed and manufactured by Spectra-Tekfor the oil industry. They are also widely used for batch processing inthe pharmaceutical, weighing and plant industries.

SPECTRA-TEK

IS Interface Module The R007-IS Interface Module is a safe-area, DIN rail mounted device which providesthe intrinsically safe power and communications signals to a Mercury 2e in theHazardous Area. The unit provides mutual galvanic isolation between the hazardous areaequipment, the 24V power and the host communi-cations so any conflict in the earthing between thecommunications and the 24V system is eliminated.This simplifies installation and reduces cost becausethere is no requirement for an I.S. earth.

Connection to a Mercury in the Hazardous Area isby a simple 4 core cable, carrying power and fullduplex serial data together with multidrop tri-statecontrol at up to 1km distance.

Standard RS232/422/485 communications are allavailable at the Interface module and up to fifteenMercuries can be operated in a multi-drop systemconnected to a single serial port in the Hostcomputer.

For non-IS applications, the power and RS232 connections may be made directly to theMercury terminal in a safe area, although the interface module may still be used if longcable runs or multi-drop operation is required.

Data ProtocolMercury operates a subset of the widely used VT100 protocol, effectively emulating thetop left-hand corner of a VDU screen. Alternatively MODBUS can be supplied.

User Memory7000 characters of non-volatile memory are provided into which the user may downloadText or Graphics ‘messages’. Each message is assigned a number, allowing instant recallto the Mercury screen by a simple host command. Up to 99 messages may be storedseparately, provided the total does not exceed 7000 characters.

S P E C T R A - T E K

Using Mercury 2eDisplay SystemBlack characters are contrasted against asilver background to provide a display ofexceptional definition and readability.Images may be stored in separate “screen”memory pages, from which combinationsof Text and Graphics may be controlledand mixed on the screen.

Simple graphics may be created usingthe controller’s line and block drawingalgorithms or alternatively bit-map imagesmay be downloaded, giving direct accessto the 240 X 64 pixel array. Complexgraphics, created on a PC-based ‘Windows’package, can be downloaded using theBitmap Graphic Converter softwareavailable from Spectra-Tek.

Two text sizes are available providingstandard and large characters: standardsized characters produce 40 x 8 lines oftext. There are 128 standard characterswhich may be supplemented by a furtherset of 96 user definable characters,allowing special language or symbols.

The larger characters are held in aseparate 96 character generator.

Simultaneous display of text and graphics,together with standard or large characters,are features of the enhanced functionalityof the Mercury 2e.

The text-only version of Mercury 2e is alow-cost alternative, providing standardsized text only, but including the 96downloadable characters.

KeyboardThe upper and lower case alphanumerickeyboard uses an array of 30 membranebuttons whose domed surfaces give atactile ‘feel’. Eight of the keys may beassigned special functions, such as “BatchStart”. An audible beeper sounds for eachkeystroke and is mounted behind themembrane, which it uses as a diaphragm.The beeper also signals successfulcard-reader or bar-code action.

Customised keyboards are available.

ConfigurationMercury is simply configured through thekeyboard in a password-protected set-upmode. The configuration is stored securelyin non-volatile memory.

M E R C U R Y 2 e

OptionsIS Card ReaderThe wipe-action cardreader utilises theWiegand effect. It isreliable, maintenance-free and extremelyrobust.

The cards are permanently encodedusing embedded wires and aretamper-proof. They may be suppliedwith customised printing includingencapsulated photographs.

IS Bar-code Wand The barcode wandplugs in with a 1metre coiled cable andreads all common barcode symbologiesfrom a wipe in eitherdirection. An audiblebeep from the Mercury confirms asuccessful read.

This option is supplied complete with adecoder which is factory-installed in theMercury 2e terminal.

IS Laser barcode scannerThe laser scanner system option is idealfor reading barcodes at a distance, fordata collection in a hazardous area. It caninterface to the Mercury 2e or operate asa standalone device. Full details areavailable separately.

IS Contact InputsFour inputs are provided to read externaldry contacts such as pushbuttons, proximitydetectors or plant status switches.

Data from all the above options are availableto the host computer via the communica-tions ports, saving extra cabling and barriers.

InstallationMercury 2e is designed for surface or polemounting; its slim design and robust caseallow considerable freedom of location.

The epoxy-painted aluminium case andsealed polyester keyboard provide protectionto IP65, allowing regular washdown.Mercury 2e is resistant to a wide range ofaggressive chemicals. An operating tempera-ture range of -20o to 50oC allows year-roundoutside use, even in harsh climates.

370

Dimensions in mm

Connections For Multi-Drop Operations

IS InterfaceModule

IS InterfaceModule

24VUp to 1 Km

4 Cores RS232/422/485

Hazardous Area Safe Area

24V

RS422/485

Hazardous Area Safe Area

Hazardous Area Safe Area

Scanner System Overview

Option

IS3000 IS3000 -SDD

Host Computer

SDD

Single Point Operation

24V

24V

IS InterfaceModule

67

97

227 35

S P E C T R A - T E K

MERCURY 2e

IS CARD READER

Certification: Cenelec EEx ia IIC T4, Zone 0, Ambient temperature: -20 to 50°C (operating)

-20 to 60°C (storage)Ingress protection: IP65Case: Aluminium casting, epoxy paintedWeight: 5.5 KgMercury 2e Display: Supertwist LCD, black characters on silver

40 x 8 characters (text mode)240 x 64 pixels (graphics mode)Dual character size. Large = approx 12mmText-only version of Mercury 2e with standard character size only also available

Keyboard: Polyester membrane type 30 keysUpper case, lower case and numeric character setsTactile and aural feedback8 function keys

User memory: 7000 Bytes non volatile, up to 99 stored messagesConnections: IS version, 4 wire connection to IS interface module

Non-IS version, 2 wires power, 3 wires RS232 dataData protocol: Based on VT100Contact inputs: 4 off, internally-powered inputs for volt-free contacts.

Certification: Cenelec EEx ia IIC T4, Zone 0,Type: Wiegand effect, swipe actionCoding: 32 bits plus start and stop.

16 bits customer code, 16 bits card codeAmbient Temperature: -20 to 50°CIngress protection: IP65

Technical Data

IS INTERFACE MODULE

IS BAR-CODE WAND AND DECODER

Hazard area connections: Data/power to Mercury, 4 wiresGalvanically Isolated, 20V, 100Ω

Cable Parameters: 4 cores or 2 twisted pairs, 1 km max284 nF max33µH / Ω max20 Ω per core max

IS earth: Not requiredPower: 20 - 32V dc, 2W nominalEnvironment: Safe areaAmbient temperature: 0 to 50°C (operating)

-20 to 60°C (storage)Humidity: 95%, non-condensingData connections: RS232, 422, 485Mounting: 35mm rail to DIN 46277 or screws on 90 mm centres

Certification: Cenelec EEx ia IIC T4, Zone 0,Scan speed: 10 to 120 cm/sec, bidirectionalReadable codes: Code 39 (3 of 9), extended code 39, code 128,

UPC/EAN/JAN, interleaved 2 of 5, codabar (NW7)Cable: 1 m coiledAmbient temperature: -20 to 50°C (operating)

-40 to 75°C (storage)Ingress protection: IP64

Further InformationFurther information on Mercury 2e and the IS3000laser barcode scanner may be obtained from our SalesOffice shown below or from any of our Distributorsand Sales Representatives, world-wide.

Headquarters & Main Sales OfficeSpectra-Tek UK Ltd, Standard Products DivisionSwinton Grange, Malton, North Yorkshire, YO17 0QREngland.

Tel: 0653 695551International +44 653 695551

Fax: 0653 600425International +44 653 600425

Note new telephone code from April 1995 :-

Tel: 0 1653 695551International +44 1653 695551

Fax: 0 1653 600425International +44 1653 600425

Documentation No STM/050/E/ 21.06.94

VT100 is a trademark of Digital Equipment Corporation. MODBUS is a trademark ofGould Modicon. Windows is a trademark of Microsoft Corporation.

All other trademarks acknowledged.

This document shall not form part of any contract. Specifications are subject to changewithout notice and Spectra-Tek UK Ltd. accepts no liability of any kind for errors oromissions