Tyco Electronics 262-300 User manual

Installation and Operating Manual
262-300 Process Control
Digital Meter Relay
http://energy.tycoelectronics.com
Energy Division
Tyco Electronics UK Limited
Crompton Instruments
Freebournes Road, Witham, Essex, CM8 3AH, UK
Tel: [phone]
Fax: [phone]

Crompton
262-300 Process Control
Digital Meter Relay
Installation & Operating Manual
Crompton Instruments
Freebournes Road
Witham
Essex
CM8 3AH
England
Tel: [phone]
Fax: [phone]
E-Mail: [email protected]
Crompton Instruments 262-300WEB Issue 1 11/2002

Contents Page
1.0 General 1 - 2
2.0 Unpacking 2
3.0 Installation 3 - 6
3.1 Safety Information 3
3.2 nstalling Into a Panel 4
3.3 Wiring 4
3.4 Power Supply 4 - 5
3.5 Sensor Connections 5
3.5.1 Current Measurement of an 5
Internally Powered Loop
3.5.2 Current Measurement of an Externally 6
Powered Loop
3.5.3 Voltage Connection 6
4.0 Programming the Instrument 7 - 10
4.1 Programming Guide 7
4.2 Key Definitions 7
4.3 Entering Menu Mode 8
4.3.1 Moving Around The Menu 8
4.3.2 Entering A Submenu 8
4.3.3 Editing A Parameter 9
4.3.4 Returning From Submenus 9
4.4 The Menus
4.4.1 The INPt (INPUT) Submenu 10
4.4.2 The SyS (System) Submenu 10
5.0 Operation 11
5.1 Run Mode Operation 11
5.2 Failure Modes 11
6.0 Specification 11
6.1 Process Specification 11
6.2 General Specification 11 - 12
7.0 Option Modules 12 - 16
7.0.1 Installing Modules 12
7.1 262-RLY Dual Relay Module 13
7.1.1 SLT1, SLT2 (Relay Module) Submenu 13
7.1.2 Relay Specification 13
7.2 2 62-ALG, Isolated Analogue Output Module 14
7.2.1 SLT1, SLT2 (Analogue output 14
module) Submenu
7.2.2 Analogue output module Specification 14
7.3 Modbus Serial Communications Module, 15
262-MOD
7.3.1 SLT1, SLT2 (Communications) Submenu 15
7.3.2 Comms Module Specification 15 - 16
8.0 Mechanical Detail 17

1.0 General
The unit is a highly accurate and stable digital temperature indicator that accepts all commonly
used temperature sensors. The unit can be used "stand alone" or, with the Modbus serial
communications module option, as part of a larger system.
The case design enables option Modules to be easily installed without the need for dismantling
or re-calibration. A range of Modules are available for:
●Relay outputs 262-RLY
●Isolated Analogue Output 262-ALG
●Modbus serial communication 262-MOD
1

1.0 General continued
The diagram shows the rear panel positions for all electrical connections.
2.0 Unpacking
Please inspect the instrument carefully for any signs of shipping damage. The packaging has
been designed to afford maximum protection, however, we cannot guarantee that mishandling
will not have damaged the instrument. In the case of this unlikely event, please contact your
supplier immediately and retain the packaging for subsequent inspection.
2

3.0 Installation
THIS SECTION FOR USE BY COMPETENT PERSONNEL ONLY
3.1 Safety Information
WARNING READ SAFETY INFORMATION BELOW BEFORE INSTALLATION
WARNING Hazardous 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 IP20.
ISOLATION The 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).
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) circuits.
WARNING If 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.
●The equipment contains no user serviceable parts.
3

3.2 Installing Into a Panel
Refer to section 8.0 for Mechanical Detail.
The maximum panel thickness is 10mm. The instrument case has an integral gasket which
forms a seal when the instrument is tightened against the panel.
The panel should be clean, smooth and at least 1.6mm thick for the seal to be effective.
●WARNING Use 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).
3.3 Wiring
All connections are made to sockets which are removable for ease of maintenance. Installation
should be undertaken in accordance with relevant sections of BS6739 - British Standards code of
practice for "Instrumentation in Process Control Systems: Installation design and practice".
3.4 Power Supply
The Power supply rating will be indicated on the top of the instrument, ensure it is correct for
the application. 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.
4

3.4 Power Supply Continued
Wires are retained by screws. Ensure that the exposed section of the wire is fully inserted and
that no loose strands are exposed.
3.5 Sensor Connections
All sensor connections are made via a five way "fast wiring" socket at the rear of the unit (wire
size 0.5 to 1.5mm2).
3.5.1 Current Measurement of an Internally Powered Loop
A 24V internal power supply is available to power external field transmitters.
5

3.5.2 Current Measurement of an Externally Powered Loop
3.5.3 Voltage Connection
6

To make a connection: Insert small screwdriver blade into tension clamp orifice, (1) push and
twist to deflect clamp into open position. Do not lever screwdriver thus forcing connector body
sideways. Insert conductor tail sufficiently into (2) then release screwdriver. Ensure no loose
wire strands protrude.
4.0 Programming the Instrument
The unit is a microprocessor based instrument enabling it to satisfy a variety of applications. All
programming is available from the front panel or via a PC using the RS485 Modbus
communications module.
4.1 Programming Guide
The unit has three operating modes. These are :
●RUN (DISPLAYS PROCESS VARIABLE)
●MENU
●EDIT
RUN is the principal mode of operation, which displays the Process Variable from which all
other modes are accessed. The unit will always time-out back to this mode after one minute.
MENU mode provides access to the programmable parameters.
EDIT mode is entered from Menu Mode and allows the user to inspect and modify a parameter.
4.2 Key Definitions
The indicator is programmed using the three front panel keys, A,B and C are shown to assist the
tutorial.
CYCLE (A), SHIFT (B) and INC (C) keys are pressed singularly.
ESCAPE (A&B), ENTER (B&C) and CLEAR (A&C) are obtained by simultaneously pressing the
two keys.
7