Installation and Operating Manual 262-300 …

1 Installation and Operating Manual262-300 Process ControlDigital Meter DivisionTyco Electronics UK LimitedCrompton InstrumentsFreebournes Road, Witham, Essex, CM8 3AH, UKTel: +44 1376 509 509 Fax: +44 1376 509 511 Crompton262-300 Process ControlDigital Meter RelayInstallation & Operating ManualCrompton InstrumentsFreebournes RoadWithamEssexCM8 3 AHEnglandTel: +44 (0) 1376 509 509 Fax: +44 (0) 1376 509 511E-Mail: Instruments 262-300 WEBI ssue 1 11 General1 - Installation3 - Information Into a Panel Wiring Power Supply 4 - Sensor Connections Current Measurement of an 5 Internally Powered Loop Current Measurement of an Externally6 Powered Loop Voltage Connection 6 Programming the Instrument 7 - Programming Guide Definitions Entering Menu Mode Moving Around The Menu Entering A Submenu Editing A Parameter Returning From Submenus The The INPt (INPUT) Submenu The SyS (System)

2 Submenu Run Mode Operation Failure Modes Specification Process Specification General Specification 11 - Option Modules 12 - Installing Modules 262-RLY Dual Relay Module SLT1, SLT2 (Relay Module) Submenu Relay Specification 262-ALG, Isolated Analogue Output Module SLT1, SLT2 (Analogue output 14module) Submenu Analogue output module Specification Modbus Serial Communications Module, 15262-MOD SLT1, SLT2 (Communications) Submenu Comms Module Specification 15 - Mechanical Detail GeneralThe unit is a highly accurate and stable digital temperature indicator that accepts all commonlyused temperature sensors.

3 The unit can be used "stand alone" or, with the Modbus serialcommunications module option, as part of a larger case design enables option Modules to be easily installed without the need for dismantlingor re-calibration. A range of Modules are available for: Relay outputs262-RLY Isolated Analogue Output262-ALG Modbus serial GeneralcontinuedThe diagram shows the rear panel positions for all electrical UnpackingPlease inspect the instrument carefully for any signs of shipping damage. The packaging hasbeen designed to afford maximum protection, however, we cannot guarantee that mishandlingwill not have damaged the instrument.

4 In the case of this unlikely event, please contact yoursupplier immediately and retain the packaging for subsequent InstallationTHIS SECTION FOR USE BY COMPETENT PERSONNEL Safety InformationWARNING READ SAFETY INFORMATION BELOW BEFORE INSTALLATIONWARNINGH azardous voltages may be present on the terminals the equipment must be installed by suitably qualified personnel and mounted in an enclosure providing protection to at least power supply terminals and associated internal circuitry are isolated from all other parts of the equipment in accordance with BS EN61010-1 for connection to a Category II supply (pollution degree 2).

5 Functional isolation (500v max) is provided between input and output circuits, and between inputs and communications (where fitted).Any terminals or wiring connected to the input, output or communications terminals which are accessible in normal operation must ONLY be connected to signals complying with the requirements for Safety extra low voltage (SELV) not installed in accordance with these instructions, protection against electrical hazards may be impaired. Installation overvoltage category - 2 (as per BS EN61010-1) The Mains supply to the equipment must be protected by an external 1 Amp fuse and a suitable switch or circuit breaker which should be near the equipment.

6 The equipment contains no user serviceable Installing Into a PanelRefer to section for Mechanical maximum panel thickness is 10mm. The instrument case has an integral gasket whichforms a seal when the instrument is tightened against the panel should be clean, smooth and at least thick for the seal to be effective. WARNINGUse only the retaining screws provided to clamp the instrument to the panel ( screws must be tightened sufficiently to effect a seal but must never be overtightened). WiringAll connections are made to sockets which are removable for ease of maintenance. Installationshould be undertaken in accordance with relevant sections of BS6739 - British Standards code ofpractice for "Instrumentation in Process Control Systems: Installation design and practice".

7 Power SupplyThe Power supply rating will be indicated on the top of the instrument, ensure it is correct forthe application. The Mains supply to the equipment must be protected by an external 1 Ampfuse and a suitable switch or circuit breaker which should be near the Power Supply ContinuedWires are retained by screws. Ensure that the exposed section of the wire is fully inserted andthat no loose strands are Sensor ConnectionsAll sensor connections are made via a five way "fast wiring" socket at the rear of the unit (wiresize to ). Current Measurement of an Internally Powered LoopA 24V internal power supply is available to power external field Current Measurement of an Externally Powered Voltage Connection6To make a connection: Insert small screwdriver blade into tension clamp orifice, (1) push andtwist to deflect clamp into open position.

8 Do not lever screwdriver thus forcing connector bodysideways. Insert conductor tail sufficiently into (2) then release screwdriver. Ensure no loosewire strands Programming the InstrumentThe unit is a microprocessor based instrument enabling it to satisfy a variety of applications. Allprogramming is available from the front panel or via a PC using the RS485 Modbuscommunications Programming GuideThe unit has three Operating modes. These are : RUN (DISPLAYS PROCESS VARIABLE) MENU EDITRUN is the principal mode of operation, which displays the Process Variable from which allother modes are accessed. The unit will always time-out back to this mode after one mode provides access to the programmable mode is entered from Menu Mode and allows the user to inspect and modify a Key DefinitionsThe indicator is programmed using the three front panel keys, A,B and C are shown to assist (A), SHIFT (B) and INC (C) keys are pressed (A&B), ENTER (B&C) and CLEAR (A&C) are obtained by simultaneously pressing thetwo Entering Menu ModeThe Root Menu mode is accessed from "Run" by pressing ENTER (B&C) followed by CYCLE (A).

9 The display will now show "inPt". In order to understand what this means, the followingdiagram shows where we are within the basic Root menu.* Slot menus only appear when respective option modules are Moving Around The MenuOne can browse through the Root menu by pressing CYCLE (A) which moves the menu positionfrom left to right (after reaching SYS, the menu position wraps around to the start). Entering A SubmenuTo enter a submenu, first cycle around the Root menu until the required submenu is the purposes of this tutorial press the CYCLE (A) key until InPt is displayed. Pressing SHIFT(B) enters the Input will now be displayed.

10 The diagram shows our position in relation to other items in CYCLE (A) moves left to right, wrapping around at the end. The unit alters items in themenu list depending upon settings Editing A ParameterThe items displayed in the menu can either be submenus, parameters ornumbers, most of the items in the Inputs menu are parameters which can the CYCLE (A) key until tYPe is displayed, then press SHIFT (B).The current setting will now be shown flashing. This item is changed by pressingthe INC (C) choice of options available is as follows:Press the INC (C) key until "crnt" is that whilst the display is flashing, the option on the display has not beensaved to memory.