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Emerson 2468CD manual 4.8SPECIFICATION, Remote Display Units, Cables, 4-17, Indication, Case Style

Models: 2468CD 2468CB

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Hydrastep 2468CB & 2468CD Manual

Remote Display Options 24683B, C & D

4.8SPECIFICATION

REMOTE DISPLAY UNITS

INDICATION	Red/green 6mm×3mm LEDs
CASE STYLE	24683B and 24683C: Panel mounting;
	24683D: Rugged enclosure, to IP65/NEMA 4X
DIMENSIONS	24683B: 144mm×72mm×200mm deep (5.67”×2.83” ×7.87”)
	24683C: 192mm×96mm×209mm deep (7.56”×3.7” ×8.23”)
	24683D: 302mm×186mm×175mm deep (11.89”×7.32” ×6.89”)
PANEL CUT-OUT	24683B: 139mm×67mm
	24683C: 186mm×92mm (7.32”×3.62”)
POWER SUPPLY	Derived from 2468 electronics unit or 20V - 54Vdc, 240mA
	Absolute maximum limits at remote display terminals: 16V to 60Vdc
TERMINALS	Screw-clamp

CABLES

Note: The following cables fulfil the minimum requirements. Heavier cables may be used. Maximum gauge accepted by connectors is 16AWG (1. 5mm2).

Powered from 2468 electronics	1.5mm2, 7×0.53mm individually shielded, 5-pair. Overall
(up to 1000m from 2468 unit)	shield. Galvanised steel wire armour. One cable
BASEEFA conformity*	required. (Mobrey Part No.480121230)
Unit locally powered	22	AWG (0.324mm2, 7×0.25mm) individually shielded, 2-pair
(up to 1000m from main unit)	twisted (Belden type No. 8723). Two cables required.
	22	AWG (0.324mm2, 7×0.25mm) individually shielded, 3-pair
	twisted (Belden type No. 8777). One cable required.

Powered from 2468 electronics	22	AWG (0.324mm2, 7×0.25mm) individually shielded, 2-pair
(up to 250m from 2468 unit)	twisted (Belden type No. 8723). Two cables required.
	22	AWG (0.324mm2, 7×0.25mm) individually shielded, 4-pair
	twisted (Alpha Wire type No. 6054C). One cable required.

Powered from 2468 electronics	22	AWG (0.324mm2, 7×0.25mm) individually shielded, 3-pair
(up to 500m from 2468 unit)	twisted (Belden type No. 8777). Two cables required.
	22	AWG (0.324mm2, 7×0.25mm) individually shielded, 6-pair
	twisted (Belden type No. 8778). One cable required.

Powered from 2468 electronics	18	AWG (0.826mm2, 16×0.25mm) individually shielded, 3-pair
(up to 1000m from 2468 unit)	twisted (Belden type No. 9773). Two cables required.
	22	AWG (0.826mm2, 16×0.25mm) individually shielded, 6-pair
	twisted (Belden type No. 9774). One cable required.

*The main Hydrastep 2468 unit is approved for operation in a hazardous environment to EExnA T4. Compliance with this approval requires that armoured cable is used to connect a remote display to the main unit. A remote display must not be used in a hazardous environment.

24685034

4-17

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Emerson 2468CD 4.8SPECIFICATION, Remote Display Units, Cables, 4-17, Indication, Case Style, Dimensions, Panel Cut-Out

Contents

Dual Power Supply Version Hydrastep 2468CB and 2468CDHydrastep Electronic Gauging SystemPOSSIBLE CAUSES See Note SYMPTOMSOLUTION See Note CATEGORYMobrey Customer Support HYDRASTEP START-UPPart 3 – Appendix About this manualPart 1 – Electrical/Electronic System Part 2 – Pressure PartsSymbol Meaning SYMBOLS USED IN THIS MANUAL AND ON THE UNITPage 24685034 PartHydrastep 2468CB & 2468CD Electronic Gauging System24685034 Pt.1-2DANGEROUS VOLTAGES ARE PRESENT IN 24685034 Pt.1-4Part Contents24685034 Pt.1-6Tables ContentsIllustrations Page NoHydrastep 2468CB and 2468CD Manual 004024685034 1.1WATER LEVEL MEASUREMENT 24685034 Hydrastep 2468CB and 2468CD Manual1.2HYDRASTEP 2468 ELECTRONIC GAUGING SYSTEM 1.2.1INPUT BOARDS1.2.2DISPLAY BOARD 1.3.2REMOTE DISPLAY UNITS 1.3SYSTEM OPTIONS1.2.3SYSTEM FAULTS 2468CB OR 2468CD 1.3.1OUTPUT BOARDSComments Table 1.1 - Upgrade paths and available optionsExisting System Available Options24685034 Hydrastep 2468CB and 2468CD ManualContents 2468CB & 2468CD Dual Power Supply Version2-32 FAULT ANALYSIS & CORRECTIVE ACTIONSPECIFICATION 2-23Number of 2.1INTRODUCTION2.2ELECTRODE CABLING SYSTEM 2.3ELECTRONIC ENCLOSURE2468CB & 2468CD Dual Power Supply Version Hydrastep 2468CB and 2468CD Manual24685034 2.3.1INPUT BOARD PCB 24680501 AND PCB 2.3.1.1Analogue Output Drive Capability2.3.2REMOTE DISPLAY DRIVE CAPABILITY 2.3.3.1Link LK1 2.3.3DISPLAY BOARD PCB2.3.4PCB INTERCONNECTIONS 2.3.3.2Links LK2, LK3, LK4 and LK5No. of Electrodes used Link Headers fitted2.4INSTALLATION 24685034 Hydrastep 2468CB and 2468CD ManualElectrode connections 2-10Number 2-11Water column connections for 16 electrodes Conductor2-12 2.4.2.3Connecting the Electrode Cable Assemblies to 2468 EnclosureAC Powered Units input board 2.4.2.4Hydrastep Power Supply Cables2-13 DC Powered Units input board 2-14Figure 2.4: Voltage Selection 240V or 2.4.2.5Analogue Output Connection 2-152.4.2.6Opto-IsolatedFault Output Connection 2-16Part of Display Board showing PL4 2.5.1INPUT BOARD PCB 24680501 OR 2.5SYSTEM CONFIGURATION2.5.1.1Analogue Output Configuration 2-17Input Board Option Board Removed 2.5.1.2Pulsed Output Setting2.5.1.3Electrode Error Configuration 2-18Offset voltages 2-19Table 2.2 - Number of electrodes being displayed 2.5.2.1Link LK1 Setting2-20 2.5.2DISPLAY BOARDHydrastep 2468CB and 2468CD Manual 2-212.5.2.3‘Switching Threshold’ Setting 2.5.2.4 ‘Compatibility’ Setting2-22 2-23 2.6FAULT ANALYSIS & CORRECTIVE ACTIONAnalysis and Corrective Action Faults2-24 IndicationIndication 2-25Indication 2-26Analysis and Corrective Action Faults2-27 IndicationAnalysis and Corrective Action Faults2-28 IndicationIndication 2-292.6.1.2Refitting the Input Board 2.6.1COMPONENT REPLACEMENT2-30 2.6.1.1Removing the Input Board 24680501 orMobrey 2.6.2PARTS LIST - HYDRASTEP 2468 CB & CD VERSIONS2-31 Item Description2-32 SPECIFICATIONPage No Wiring Diagrams for Dual Power Supply VersionContents 2-WD.124685034 Wiring Diagrams for Dual Power Supply Version2-WD.2 Hydrastep 2468CB and 2468CD ManualWiring Diagrams for Dual Power Supply Version 2-WD.324685034 24685034 Wiring Diagrams for Dual Power Supply Version2-WD.4 Hydrastep 2468CB and 2468CD Manual24685034 2-WD.524685034 Wiring Diagrams for Dual Power Supply Version2-WD.6 Hydrastep 2468CB and 2468CD Manual24685034 2-WD.724685034 Wiring Diagrams for Dual Power Supply Version2-WD.8 Hydrastep 2468CB and 2468CD Manual24685034 2-WD.92-WD.10 24685034Hydrastep 2468CB and 2468CD Manual 24685034 2-WD.1124685034 Wiring Diagrams for Dual Power Supply Version2-WD.12 Hydrastep 2468CB and 2468CD Manual24685034 2-WD.1324685034 Wiring Diagrams for Dual Power Supply Version2-WD.14 Hydrastep 2468CB and 2468CD Manual24685034 2-WD.1524685034 Wiring Diagrams for Dual Power Supply Version2-WD.16 Hydrastep 2468CB and 2468CD Manual2468 - Relay Output Board Option Contents3a-1 3a-2 3a-724685034 3A.2 INSTALLATION 3A.1 GENERAL DESCRIPTION3a-3 3a-4 3a.2.3.2 Relay Output Connections 3A.2.3 ELECTRICAL INSTALLATION3a-5 3a.2.3.1 PCB Interconnections3a-6 3A.3 RELAY BOARD CONFIGURATION3a.3.1.1 Configuring the Relay Output Board 3a-73A.3.1 RELAY OUTPUT BOARD 3a-8 3A.3.2 ALARM AND TRIPPING FACILITIES 3a-93a.3.2.1 Philosophy 3a-10 3a-11 3a-12 3a-13 3a-14 3a-15 3A.4 COMPONENT REPLACEMENT3a-16 3A.5 SPECIFICATIONDelay Relay Output Board Option Contents3b-1 24685034 SPECIFICATION3b-2 3B.53B.2 INSTALLATION 3B.1 GENERAL DESCRIPTION3b-3 3b-4 3b.2.3.2 Relay Output Connections 3B.2.3 ELECTRICAL INSTALLATION3b-5 3b.2.3.1 PCB Interconnections3b-6 3B.3 DELAY RELAY BOARD CONFIGURATION3B.3.1 DELAY RELAY OUTPUT BOARD 3b.3.1.1 Configuring the Delay Relay Output Board3b-7 3b-8 3b.3.1.6 Delay Circuit Configuration 3b-924685034 3b-10 3b.3.1.7 Configuring the Delay Circuit Split Pads3B.3.2 ALARM AND TRIPPING FACILITIES 3b-113b.3.2.1 Philosophy 3b-12 3b-13 3b-14 3b-15 3b-16 3b-17 3B.4 COMPONENT REPLACEMENT3b-18 3B.5 SPECIFICATIONContents 2468 Opto-isolatedOutput Board Option24685034 IllustrationsTables 3c-23C.2 INSTALLATION 3C.1 GENERAL DESCRIPTION3c-3 3c-4 3c.2.3.2 Opto-IsolatedOutput Connections 3c-53c-6 3C.3 OPTO-ISOLATEDOUTPUT BOARD CONFIGURATION3c-7 3c-8 3C.3.2 ALARM AND TRIPPING FACILITIES 3c-93c.3.2.1 Philosophy 3c-10 3c-11 3c-12 3c-13 3c-14 3C.4 COMPONENT REPLACEMENT3C.5 SPECIFICATION 3c-1524685034 24685034 3c-16Opto-isolatedOutput Board Option Hydrastep 2468CB & 2468CD ManualContents Remote Display Options 24683B, C, & DFigure 4.1REMOTE DISPLAY OPTIONS 4.2CONFIGURATION 4.2.2RECONFIGURING THE 24683D REMOTE DISPLAY 4.3.2INSTALLING THE 24683D WALL MOUNTED UNIT 4.3MECHANICAL INSTALLATIONcomply with the EMC directive 4.4ELECTRICAL INSTALLATION4.4.1STAR AND DAISY CHAIN CONNECTIONS StarDaisy Chain 4.4.2EXAMPLE OF A ‘STAR CONNECTED’ SYSTEM 4-10 4.4.3EXAMPLE OF A `DAISY CHAIN SYSTEMTerminal 4.4.4CONNECTING CABLES TO THE REMOTE DISPLAYService 4-114-12 4.4.5CONNECTING THE DISPLAY CABLES TO HYDRASTEP4-13 4.6FAULT ANALYSIS AND CORRECTIVE ACTION4.5SYSTEM OPERATION Fault4-14 Bottom half of faultFlickering Display 4-15Mobrey Part Number 4.7COMPONENT REPLACEMENT4-16 ItemREMOTE DISPLAY UNITS 4.8SPECIFICATIONDIMENSIONS POWER SUPPLY24685034 4-18Remote Display Options 24683B, C & D Hydrastep 2468CB & 2468CD ManualOperating Manual Hydrastep Pressure Parts24675030 Pt.2-2About this manual Part 2 - Pressure PartsPt.2-3 24675030 Pt.2-4INCORRECT R E M I N D E RELECTRODE INSTALLATION CORRECT24675030 Pt.2-6Pt.2-7 N O T I C E24675030 Pt.2-8Fault Repair and Commissioning Part 2 - Hydrastep Pressure PartsInstallation Procedures Unit Specifications - Hydrastep24675030 Pt.2-10Illustrations General IntroductionPRINCIPLE OF OPERATION WATER LEVEL INDICATIONGeneral Introduction 24675030Hydrastep Pressure Parts 1.2WATER LEVEL INDICATION 1.1PRINCIPLE OF OPERATION24675030 General IntroductionGeneral Introduction 24675030General Introduction 24675030Hydrastep Pressure Parts INSTALLATION OF WATER COLUMN Installation ProceduresContents SCOPE OF PROCEDURESInstallation Procedures 24675030Hydrastep Pressure Parts 2.2.4HANDLING PRECAUTIONS 2.1SCOPE OF PROCEDURES2.3INSTALLATION OF WATER COLUMN 2.2STORAGEdiscarded Figure 2.1 - Universal weld profile 2.4INSPECTION OF MECHANICAL INSTALLATION WORK 24675030 Installation ProceduresInstallation Procedures Figure 2.3 - Typical water column suspension24675030 WATER COLUMN COMMISSIONING OR RECOMMISSIONING Fault Repair and CommissioningContents BACKGROUNDFault Repair and Commissioning 24675030Hydrastep Pressure Parts 3.1.1SAFETY PRECAUTIONS 3.1BACKGROUND3.1.2WATER COLUMN ISOLATION 3.1.3ELECTRODE AND ELECTRODE SEAL LEAKS3.1.3.1Low Pressure Electrodes 3.1.3.2High Pressure Electrodes 3.2.1VENT AND DRAIN VALVE REPAIRS 3.2WATER COLUMN COMMISSIONING OR RECOMMISSIONING3.2.2WATER COLUMN TRANSIENT RESPONSE 3.2.3WATER COLUMN OR PIPEWORK BLOCKAGE3.2.4WATER COLUMN LIFE Fault Repair and Commissioning 24675030Hydrastep Pressure Parts Contents Unit DescriptionUnit Description Hydrastep Pressure Parts24675030 Figure 4.1 - Low pressure electrode 4.1LOW PRESSURE ELECTRODESFigure 4.2 - High pressure electrode 4.2HIGH PRESSURE ELECTRODES4.3WATER COLUMN L.P 4.4WATER COLUMN H.P 4.5WATER COLUMN H.P. SUPERCRITICAL Unit Description Hydrastep Pressure Parts24675030 5.1ELECTRODES Unit Specifications - Hydrastep5.2WATER COLUMNS SeriesSuper Pt.3-1 PartHydrastep 2468CA, CB, CC & CD Electronic Gauging SystemPt3-2 A.1 GENERAL CSA CertifiedHydrastep 2468 - Technical Manual Page Appendix A: CSA Approval Page Hydrastep Operating ManualEmerson Process Management Mobrey Ltd