3C.1 GENERAL DESCRIPTION, 3C.2 INSTALLATION, 3c-3 | Emerson 2468CD

Hydrastep 2468CB & 2468CD Manual

Opto-isolated Output Board Option

3C.1 GENERAL DESCRIPTION

The Opto-isolated Output Board (PCB 24680505) has four opto-isolated outputs and is mounted on top of the input board using 3 nylon spacers. Electrical connection between the two boards is via a plug and a socket (SK1 on the input board and PL1 on the opto-isolated output board).

A second opto-isolated output board may be mounted on top of the first on spacers. Holes have been drilled on all opto-isolated output boards to receive the 3 nylon spacers. The top output board is offset towards the centre of the unit improving the cable layout from the opto-isolated output boards. The spacer fixing holes and mounting holes are illustrated in Figure 3c.1 (on page 3c-6).

Note: The term energised is used to describe the ON (low resistance) state of the opto- isolated output.

Each of the opto-isolated outputs can be energised by any one of up to 16 electrodes, with an individual choice of being energised when its selected electrode is in steam or is in water. Furthermore, opto-isolated output 1 can be used to monitor an electrode state or to register an ALARM condition. When set to register the ALARM state, the opto-isolated output is energised in the ‘system normal’ state and de-energisedwhen an ALARM condition exists.

This option comes complete with the nylon spacers and two 8-way output sockets.

3C.2 INSTALLATION

This sub-section deals with the mechanical and electrical installation of the Opto-isolated Output Board (PCB 24680505) option. In the rest of this chapter the ‘opto-isolated output board’ title is shortened to ‘output board’.

3C.2.1 STORAGE & PRE-INSTALLATION INSPECTION 3c.2.1.1 Storage Area

The storage area must be dry, dust-free and kept at a reasonable temperature. The storage area should allow for access and inspection of all items of equipment.

3c.2.1.2 Pre-installation Inspection

Open the option package and inspect the contents for signs of damage. Check contents for completeness.

24685034

3c-3

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Emerson 2468CD, 2468CB manual 3C.1 GENERAL DESCRIPTION, 3C.2 INSTALLATION, 3c-3

Contents

Hydrastep Hydrastep 2468CB and 2468CDElectronic Gauging System Dual Power Supply Version SOLUTION See Note SYMPTOMCATEGORY POSSIBLE CAUSES See Note Mobrey Customer Support HYDRASTEP START-UP Part 1 – Electrical/Electronic System About this manualPart 2 – Pressure Parts Part 3 – Appendix Symbol Meaning SYMBOLS USED IN THIS MANUAL AND ON THE UNITPage Hydrastep 2468CB & 2468CD PartElectronic Gauging System 24685034 Pt.1-2 DANGEROUS VOLTAGES ARE PRESENT IN Pt.1-4 Part Contents Pt.1-6 Illustrations ContentsPage No Tables 0040 1.1WATER LEVEL MEASUREMENT 24685034 1.2HYDRASTEP 2468 ELECTRONIC GAUGING SYSTEM 1.2.1INPUT BOARDS1.2.2DISPLAY BOARD 1.2.3SYSTEM FAULTS 2468CB OR 2468CD 1.3SYSTEM OPTIONS1.3.1OUTPUT BOARDS 1.3.2REMOTE DISPLAY UNITS Existing System Table 1.1 - Upgrade paths and available optionsAvailable Options Comments 24685034 2468CB & 2468CD Dual Power Supply Version SPECIFICATION FAULT ANALYSIS & CORRECTIVE ACTION2-23 2-32 2.2ELECTRODE CABLING SYSTEM 2.1INTRODUCTION2.3ELECTRONIC ENCLOSURE Number of 2468CB & 2468CD Dual Power Supply Version 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 PCB No. of Electrodes used 2.3.3.2Links LK2, LK3, LK4 and LK5Link Headers fitted 2.3.4PCB INTERCONNECTIONS 2.4INSTALLATION 24685034 Electrode connections 2-10 Water column connections for 16 electrodes 2-11Conductor Number 2-12 2.4.2.3Connecting the Electrode Cable Assemblies to 2468 Enclosure AC 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 2-15 2.4.2.6Opto-IsolatedFault Output Connection 2-16Part of Display Board showing PL4 2.5.1.1Analogue Output Configuration 2.5SYSTEM CONFIGURATION2-17 2.5.1INPUT BOARD PCB 24680501 OR 2.5.1.3Electrode Error Configuration 2.5.1.2Pulsed Output Setting2-18 Input Board Option Board Removed Offset voltages 2-19 2-20 2.5.2.1Link LK1 Setting2.5.2DISPLAY BOARD Table 2.2 - Number of electrodes being displayed 2-21 2.5.2.3‘Switching Threshold’ Setting 2.5.2.4 ‘Compatibility’ Setting2-22 2-23 2.6FAULT ANALYSIS & CORRECTIVE ACTION 2-24 FaultsIndication Analysis and Corrective Action 2-25 2-26 Bottom half of 2-27alternates alternating between water and steam green and 2-28 State 5 contdBottom half of 2-29 2-30 2.6.1COMPONENT REPLACEMENT2.6.1.1Removing the Input Board 24680501 or 2.6.1.2Refitting the Input Board 2-31 2.6.2PARTS LIST - HYDRASTEP 2468 CB & CD VERSIONSItem Description Mobrey 2-32 SPECIFICATION Wiring Diagrams for Dual Power Supply Version 2-WD.1Page No 2-WD.2 Wiring Diagrams for Dual Power Supply Version 2-WD.3 Wiring Diagrams for Dual Power Supply Version 2-WD.4 2-WD.5 2-WD.6 2-WD.7 2-WD.8 2-WD.9 Hydrastep 2468CB and 2468CD Manual 2-WD.10 2-WD.11 2-WD.12 2-WD.13 2-WD.14 2-WD.15 2-WD.16 3a-1 2468 - Relay Output Board Option 3a-7 3a-2 3A.2 INSTALLATION 3A.1 GENERAL DESCRIPTION3a-3 3a-4 3a-5 3A.2.3 ELECTRICAL INSTALLATION3a.2.3.1 PCB Interconnections 3a.2.3.2 Relay Output Connections 3a-6 3A.3 RELAY BOARD CONFIGURATION 3a.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 REPLACEMENT 3a-16 3A.5 SPECIFICATION 3b-1 Delay Relay Output Board Option SPECIFICATION 3b-23B.5 3B.2 INSTALLATION 3B.1 GENERAL DESCRIPTION3b-3 3b-4 3b-5 3B.2.3 ELECTRICAL INSTALLATION3b.2.3.1 PCB Interconnections 3b.2.3.2 Relay Output Connections 3b-6 3B.3 DELAY RELAY BOARD CONFIGURATION 3b.3.1.1 Configuring the Delay Relay Output Board 3b-73B.3.1 DELAY RELAY OUTPUT BOARD 3b-8 3b-9 3b.3.1.6 Delay Circuit Configuration 3b-10 3b.3.1.7 Configuring the Delay Circuit Split Pads 3b.3.2.1 Philosophy 3b-11 3b-12 3b-13 3b-14 3b-15 3b-16 3b-17 3B.4 COMPONENT REPLACEMENT 3b-18 3B.5 SPECIFICATION 2468 Opto-isolatedOutput Board Option Illustrations Tables3c-2 3C.2 INSTALLATION 3C.1 GENERAL DESCRIPTION3c-3 3c-4 3c.2.3.2 Opto-IsolatedOutput Connections 3c-5 3c-6 3C.3 OPTO-ISOLATEDOUTPUT BOARD CONFIGURATION 3c-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 REPLACEMENT 3c-15 3C.5 SPECIFICATION 3c-16 Remote Display Options 24683B, C, & D Figure 4.1REMOTE DISPLAY OPTIONS 4.2CONFIGURATION 4.2.2RECONFIGURING THE 24683D REMOTE DISPLAY 4.3.2INSTALLING THE 24683D WALL MOUNTED UNIT 4.3MECHANICAL INSTALLATION comply with the EMC directive 4.4ELECTRICAL INSTALLATION 4.4.1STAR AND DAISY CHAIN CONNECTIONS StarDaisy Chain 4.4.2EXAMPLE OF A ‘STAR CONNECTED’ SYSTEM 4-10 4.4.3EXAMPLE OF A `DAISY CHAIN SYSTEM Service 4.4.4CONNECTING CABLES TO THE REMOTE DISPLAY4-11 Terminal 4-12 4.4.5CONNECTING THE DISPLAY CABLES TO HYDRASTEP 4.5SYSTEM OPERATION 4.6FAULT ANALYSIS AND CORRECTIVE ACTIONFault 4-13 4-14 Bottom half of fault Flickering Display 4-15 4-16 4.7COMPONENT REPLACEMENTItem Mobrey Part Number DIMENSIONS 4.8SPECIFICATIONPOWER SUPPLY REMOTE DISPLAY UNITS 4-18 Operating Manual Hydrastep Pressure Parts 24675030 Pt.2-2 Pt.2-3 Part 2 - Pressure Parts Pt.2-4 ELECTRODE INSTALLATION R E M I N D E RCORRECT INCORRECT Pt.2-6 Pt.2-7 N O T I C E Pt.2-8 Installation Procedures Part 2 - Hydrastep Pressure PartsUnit Specifications - Hydrastep Fault Repair and Commissioning Pt.2-10 PRINCIPLE OF OPERATION General IntroductionWATER LEVEL INDICATION 24675030 Hydrastep Pressure Parts 24675030 1.2WATER LEVEL INDICATION 1.1PRINCIPLE OF OPERATION 24675030 General Introduction General Introduction SCOPE OF PROCEDURES Installation ProceduresINSTALLATION OF WATER COLUMN STORAGE Installation Procedures 2.3INSTALLATION OF WATER COLUMN 2.1SCOPE OF PROCEDURES2.2STORAGE 2.2.4HANDLING PRECAUTIONS discarded Figure 2.1 - Universal weld profile 2.4INSPECTION OF MECHANICAL INSTALLATION WORK 24675030 Figure 2.3 - Typical water column suspension Fault Repair and Commissioning BACKGROUNDWATER COLUMN COMMISSIONING OR RECOMMISSIONING Fault Repair and Commissioning 3.1.1SAFETY PRECAUTIONS 3.1BACKGROUND 3.1.2WATER 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 RECOMMISSIONING 3.2.2WATER COLUMN TRANSIENT RESPONSE 3.2.3WATER COLUMN OR PIPEWORK BLOCKAGE3.2.4WATER COLUMN LIFE Fault Repair and Commissioning Unit Description Unit Description Figure 4.1 - Low pressure electrode 4.1LOW PRESSURE ELECTRODES Figure 4.2 - High pressure electrode 4.2HIGH PRESSURE ELECTRODES 4.3WATER COLUMN L.P 4.4WATER COLUMN H.P 4.5WATER COLUMN H.P. SUPERCRITICAL Unit Description 5.1ELECTRODES Unit Specifications - Hydrastep 5.2WATER COLUMNS SeriesSuper Hydrastep 2468CA, CB, CC & CD PartElectronic Gauging System Pt.3-1 Pt3-2 A.1 GENERAL CSA Certified Hydrastep 2468 - Technical Manual Page Appendix A CSA Approval Page Operating Manual Hydrastep