Eurotherm 7000 Series User Manual
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Eurotherm 7000 Series User Manual

Eurotherm 7000 Series User Manual

Advanced controllers, thyristor units controlling two phases of a three-phase load
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Power
Thyristor Units
Two phase
User Manual
ENG
load control

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Summary of Contents for Eurotherm 7000 Series

  • Page 1 Power Thyristor Units Two phase User Manual load control...
  • Page 2 OF A THREE-PHASE LOAD 7000 SERIES USER MANUAL © Copyright Eurotherm Automation 2004 All rights reserved. All reproduction or transmission in any form whatsoever and using any procedure (electronic or mechanical, including photocopying and recording) without written permission from Eurotherm is strictly prohibited...
  • Page 3 COMMISSIONING FLOWCHART Characteristics correspond Check characteritics Page 1-8 to product code Mounting DIN Rail Page 2-3 Bulkhead Mounting Page 2-4 Wiring Power Page 2-7 Control Page 2-8,2-9,2-10 Applying the control signal Page 2-9 ANA terminal Block If External Power Supply Auxiliary Power Supply Page 2-10 (for electonics od/and fan)
  • Page 4 .........6-1 Eurotherm worlwide sales and services ... . .7-1 PURPOSE OF MANUAL This manual ( Issue 3.0 ) describes the Basic Version and all Options...
  • Page 5 Conducted at radiofrequencies ‘Burst mode’ and ‘Single-cycle’ CISPR 11 Class A group 2 Table 2. EMC emissions standards compliance EMC GUIDE To help you deal with installation-dependent electromagnetic interference effects,Eurotherm provides an ‘Electromagnetic compatibility’ installation guide (ref. HA 025464 ENG) which CE CONFORMITY DECLARATION sets out best current practice regarding EMC.
  • Page 6 Identification 1. Chapter 1 POWER THYRISTOR UNIT IDENTIFICATION Contents Page 1.1. General presentation ........1-2 1.2.
  • Page 7 Identification 1. Chapter 1 IDENTIFICATION 1.1. GENERAL PRESENTATION A 7200A series thyristor unit comprise of two channel, controlled by thyristors. 7200A series thyristor units are used to control the electrical power of three-phase industrial loads ; such as : Low coefficient resistive loads Short wave infrared elements for units with a rating ≤...
  • Page 8 Identification Protective earth Power terminals terminal (supply) Internal power wiring diagram DLF option : Diagnostic alarm Electronics supply Zero crossing firing mode : Firing request LED Control terminal pinouts Control connector Power terminals (load) Figure 1-2 General view of a 7200A power unit ratings from 80 A to 100 A 7200A User Manual...
  • Page 9 Identification Figure 1-3 General view of a 7200A power unit ≥ 125 A rating 7200A User Manual...
  • Page 10 Identification 1.2. TECHNICAL SPECIFICATIONS 1.2.1 Use Thyristor unit, variant 4 (see Standard EN 60947-4-3) 1.2.2. Power for uninterrupted service. Nominal current per phase 16 A to 200 A at 45 °C (see product code) Nominal line to line voltage 200 V to 500 V (see code). Frequency Use from 47 to 63 Hz (automatic matching) Dissipated power...
  • Page 11 Identification 1.2.6. Firing modes Zero crossing firing • ‘Burst mode’, base time : 16 or 64 cycles 1.2.7. Control • ‘Single-cycle’, base time : 1 cycle Parameters • Standard (on balanced three-phase supply) : Load voltage squared (V Linearity and Stability Better than ±2% of full scale (on balanced three-phase supply) 1.2.8.
  • Page 12 RH from 5% to 95% non-condensing, non-streaming. Over-Voltage Over-voltage category II (as defined by IEC 60664) Eurotherm’s policy of continuous product improvement and development means that the specifications in this document may be modified without prior notice. 7200A User Manual...
  • Page 13 Identification 1.3. Codification Ratings 1. Nominal current per phase Code 9. Manual language Code 16 amps French 25 amps English 40 amps German * 63 amps 80 amps 10. Selected options Code 100 amps 100A 125 amps 125A Without options: V control and NONE 160 amps...

  • Page 14: Table Of Contents

    Installation 2. Chapter 2 INSTALLATION Contents Page 2.1. Safety during installation ........2-2 2.2.

  • Page 15: Safety During Installation

    Installation 2. Chapter 2 INSTALLATION 2.1. SAFETY DURING INSTALLATION (MOUNTING AND WIRING) Danger! • 7200A power thyristor units must be installed and wired by qualified staff authorised to work on low voltage industrial electrical facilities. • Units must be installed in a fan-cooled cabinet, to ensure that condensation and pollution are excluded, with a class of at least 2 according to IEC 60664.

  • Page 16: Mounting

    Installation 2.2. MOUNTING 2.2.1. TYPES OF MOUNTING • DIN rail mounting and bulkhead mounting - 16 A to 63 A only • Bulkhead mounting with screws ≥ 80 A DIN rail mounting (≤ 63 A only) Bulkhead mounting Attachment plate DIN rail Attachment plate Screws...

  • Page 17: Bulkhead Mounting

    Installation 2.2.4. BULKHEAD MOUNTING For 2 M4 screws For 2 M6 screws For 2 M4 screws Figure 2-2 Bulkhead mounting - 16 A to 63 A units For 2 M6 screws For 2 M6 screws Figure 2-4 Bulkhead mounting - ≥ 125 A units For 2 M6 screws Figure 2-3 Bulkhead mounting - 80 A to 100 A units...

  • Page 18: Wiring

    (independently of the three-phase load configuration) and control connectors. To supply network Protection and cut)out installed by user Thyristor fuses (External ≤ 100 A) Protective Earth ε EUROTHERM 7200 63 A / 500 V 1/L1 3/L2 5/L3 2/T1 4/T2 6/T3...
  • Page 19 Installation Supply protection and cut-out. Installed by user Controlled channel terminal (supply side) Protective earth terminal Internal fuse compartment (thyristor protection) Internal power wiring diagram Controlled channel terminal (load side) 2/T1 4/T2 Internal fuse blown contact(MSFU) Figure 2-6 General connection diagram for units with rating ≥ 125 A 7200A User Manual...

  • Page 20: Power Connections

    • closed delta (3 connection wires, code 3D) Three-phase supply Protection and cut-out installed by user Thyristor fuses 3 power terminals Protective earth (supply side) terminal ε EUROTHERM 7200 63 A / 500 V EN 60947-4-3 Internal 1/L1 3/L2 5/L3 power wiring...

  • Page 21: Control Connections

    Installation 2.3.3. CONTROL CONNECTIONS Terminal blocks on the underside of the 7200A power thyristor unit are used to connect: • the control signals (analogue) • the auxiliary or electronics supply and the neutral • alarm relay and acknowledgement contacts 2.3.3.1.Control terminal blocks The wires used should be stripped for a length of 6 to 7 mm.

  • Page 22: Control Signal

    100% +5 V internal a) external signal, e.g. from b) manual command from Eurotherm series 2000 controller external potentiometer Figure 2-8 Control signal connection (self-powered unit, base version) The analogue control signal terminal block is labelled ANA.IN. The input available corresponds to the input type selected in the product code (specified range of voltage or current).

  • Page 23: External Power Supply Terminal Block

    Protection / Cut-off installed by user Supply Network ε EUROTHERM 7200 63 A / 500 V EN 60947-4-3 1/L1...
  • Page 24 Firing modes 3. Chapter 3 FIRING MODES Contents Page 3.1. General and firing mode signalling ......3-2 3.2.
  • Page 25 Firing modes 3. Chapter 3 FIRING MODES 3.1. GENERAL AND FIRING MODE SIGNALLING 7200A power thyristor units can be controlled with one of the following thyristor firing types: • a series of supply voltage cycles with zero crossing firing (‘Burst mode’, codes C16, C64, FC1) The firing type is shown on the unit’s front panel (table 3-1) in accordance with the product code.
  • Page 26 Firing modes Thyristor firing in ‘Burst mode’ can be described by the firing time (T ) , non-firing time (T ) and modulation time (T ) ; where T The power delivered to the load is defined by the duty ratio η = T Firing in ‘Burst mode’...
  • Page 27 Firing modes 7200A User Manual...
  • Page 28 Alarms 4. Chapter 4 ALARMS Contents Page Alarm diagnostic ..........4-2 4.1.

  • Page 29: Alarm Diagnostic

    Alarms ALARM DIAGNOSTIC The table below summarises all status LED information needed to diagnose the fault. OPTIONS Basic Version T° LEDs (Front panel) T° ≥ 125 A Orange green HEAT Green DIAGNOSIS: No Alarm Over- Partial Total heating Load Thyristor Load Firing : Failure...

  • Page 30: Safety Mechanisms

    Danger be inspected regularly . Given the value of the equipment controlled by the 7200A, this is strongly recommended. Eurotherm can supply various types of suitable alarm detector. 4.2. ALARM STRATEGY 4.2.1. TYPES OF ALARM Two types of alarm are available as options : •...

  • Page 31: Dlf Option (Load Failure Diagnostic Alarm)

    Alarms 4.3. ALARMS Red LED : 'Overheating' (≥125 A) Red LED : 'Serious faults' T ° Orange LED : DLF alarm G R F 'Partial Load Failure' adjustment and diagnostic push button C H K D L F S E T Figure 4-2 Layout of front panel LEDs 4.3.1.

  • Page 32: Alarm Actions With Dlf Option

    Alarms 4.3.1.1. Alarm actions with DLF option The detection of a fault (PLF or serious alarm) is signalled by : • the corresponding LED on the front pannel of the unit • the alrm relay contact Note : DLF alarms are not memorised. LED states Firing Typical...

  • Page 33: Load Type Matching

    Alarms 4.3.2.2. Partial load failure detection PLF monitoring involves comparing the load impedance with a reference impedance stored during setting (the load impedance is calculated from the rms values measured con- tinuously). This comparison allows the detection of the load impedance increase. PLF detection is only possible under the following conditions: •...

  • Page 34: Signalling Of Channel For Load Fault

    Alarms 4.3.2.5. Signalling of channel for load fault With the ‘DLF’ option the DLF LED flashes in particular ways to indicate the controlled channel on which load failure has occurred. Figure 4-3 shows the three types of flashing if a load failure is detected on one of the channels of the 7200A power thyristor unit.

  • Page 35: Functions Of Dlf Alarm Push Button

    Alarms 4.3.2.5.2. Functions of DLF alarm push button The push button on the front panel of the unit with the ‘DLF’ option is labelled ‘CHK / SET’ (Checking / Setting). Pushing this push button as shown on the diagrams below sets and diagnoses the status of the PLF detection circuit.
  • Page 36 Maintenance Chapter 5 5. MAINTENANCE Contents Page 5.1. Safety during maintenance ........5-2 5.2.
  • Page 37 Important! • Eurotherm shall not be held responsible for any damage, injury, losses or expenses caused by inappropriate use of the product or failure to comply with this manual. • Accordingly the user is responsible for checking, before commissioning the unit, that all the nominal characteristics correspond to the conditions under which it is to be installed and used.
  • Page 38 Maintenance 5.3. THYRISTOR PROTECTION FUSES The thyristors in the 7200A power thyristor unit are protected against excess currents by high-speed fuses (for all load types other than short wave infrared elements). For current ratings ≤ 100 A the fuses are external. Danger! High-speed fuses do not provide protection for the installation.
  • Page 39 Maintenance USER NOTES : 7200A User Manual...
  • Page 40 Maintenance INDEX Page Page Alarms 1-6, Chapt. 4 Alarm relay contacts Maintenance Chapt 5 Mounting 2-3, 2-4 Bulkhead mounting Power connection Protection CE labelling Power Coding Commissioning Control connections Control signal Control teminal block Standards Safety Safety during maintenance Safety during installation Dimensions Technical Specification Three-phase load connection...
  • Page 41 • Data Acquisition and Management Instrumentation • Supervisory Systems (SCADA) • Process Automation Systems Eurotherm Limited is part of the of Invensys plc, one of the world’s leading automation and controls companies. Eurotherm manufactures at a number of locations in Europe and the USA, and is a major supplier to the world’s processing and manufacturing industries.
  • Page 42 Tel Guanzate (+39 31) 975111 Fax (+39 31) 977512 http://www.eurotherm.co.uk WEB: www.eurotherm.it Eurotherm is part of Invensys plc Equipment made in a certified ISO9001 factory. © Copyright Eurotherm Limited 2002 All rights strictly reserved. No part of this document may be stored in a retrieval system, or any form or by any means without prior written permission from Eurotherm Limited.

This manual is also suitable for:

7200a

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