Eurotherm 7000 Series User Manual
  1. Manuals
  2. Brands
  3. Eurotherm Manuals
  4. Controller
  5. 7000 Series
  6. User manual
Eurotherm 7000 Series User Manual

Eurotherm 7000 Series User Manual

Advanced controllers, three-phase power thyristor units
Hide thumbs Also See for 7000 Series:
Table of Contents

Advertisement

Quick Links

Download this manual
Single Phase
Power
Thyristor
Units
User
ENG
Manual

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 7000 Series and is the answer not in the manual?

Questions and answers

Related Manuals for Eurotherm 7000 Series

Summary of Contents for Eurotherm 7000 Series

  • Page 1 Single Phase Power Thyristor Units User Manual...
  • Page 2 7000 * series User Manual © Copyright Eurotherm Limited 2002 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

    COMMISSIONING FLOWCHART Note: If the code does not correspond, go to the next step. Characteristics correspond Check characteristics Chapter 1 to product code Supply protection, Wiring Chapter 2 protective earth, power, control If external supply Auxiliary power supply Page 2-11 (electronics or fan) Control and limit in I2, V2CL : Calibrate minimum current...

  • Page 4: Table Of Contents

    Maintenance ......7-1 Eurotherm worldwide sales and service ....8-1 PURPOSE OF MANUAL This manual (Issue 2.1) describes the Basic Version and all options for 7300A series...

  • Page 5: European Directives And Applicable Standards

    EMC GUIDE To help you deal with installation-dependent electromagnetic interference effects, Eurotherm provides an ‘Electromagnetic compatibility’ installation guide (ref. HA 025464 ENG) which sets out best current practice regarding EMC. DECLARATION OF CONFORMITY CE is available on request.

  • Page 6: Chapter 1 Identification Of Power Thyristor Units

    Identification Chapter 1 IDENTIFICATION OF POWER THYRISTOR UNITS Contents Page 1.1. General presentation ........1-2 1.2.

  • Page 7: General Presentation

    Identification Chapter 1 IDENTIFICATION 1.1. GENERAL PRESENTATION 7300A series power thyristor units are used to control the electrical power of three-phase industrial loads of all types. The load controlled may comprise high or low temperature coefficient resistive loads, short wave infrared elements or transformer primaries. Current ratings vary from 16 A to 160 A (per phase), at line-to-line voltages of 200 V to 500 V.
  • Page 8 Identification Protective Earth Power Terminals Terminal (Supply side) Internal power wiring diagram GRF Option: Serious Alarm DLF Option: Diagnostic alarm Firing Request Control Terminal Pinouts Control Connector Power Terminals (Load side) Figure 1-2 General view of 7300A unit from 63 A to 100 A 7300A User Manual...
  • Page 9 Identification Power Terminals (Supply side) Internal fuse Compartment Protective earth terminal 2 attachement screws for internal fuse compartment DLF Option- Internal wiring diagram (internal fuse for CHK/SET 125 to 200 A ratings) Push-Button : DLF alarm Over-temperature setting / diagnosis Alarm (≥...

  • Page 10: Technical Specifications

    Identification 1.2. TECHNICAL SPECIFICATIONS 1.2.1. Use Thyristor unit, variant 4 (see Standard EN 60947-4-3) for uninterrupted service. 1.2.2. Power Nominal current per phase 16 A to 160 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: Command

    Identification 1.2.6. Command Supply Self-powered from line or external power supply (115 V or 230 V +10%; -15%) depending on order code. Consumption: 10 VA. Control type Analogue (digital communication optional) • either remote analogue setpoint: 0-5 V or 0-10 V (100 kΩ input), 0-20 mA or 4-20 mA (250 Ω...

  • Page 12: Alarms

    Identification 1.2.9. ALARMS Standard alarms Supply fault Supply voltage absent on one or three phases. Frequency outside operating frequency . Operation Cut off. Signalling Without options: ‘ON’ LED With alarm option: ‘ON’ LED and alarm relay . Open circuit Neutral In ‘Star with neutral’...

  • Page 13: Protection

    Identification 1.2.10. Protection Co-ordination type For short circuits. Load monitoring. Electrical protection IP20 without adding additional protection. Thyristors Varistor and RC snubber. High speed fuses: • rating ≤ 100 A: external (see code, section 6) • rating ≥ 125 A: internal (under development). No fuses for Short wave infrared elements in Burst mode and Single-cycle firing, or Phase angle without Current limit.

  • Page 14: Digital Communication

    Identification 1.2.13. DIGITAL COMMUNICATION Protocol Modbus® RTU Compliance Communication complies with the specifications given in ‘GOULD MODICON Protocol Reference Guide PI-MBUS-300 rev J’ Power supply 24 Vac (±20%), 47 to 63 Hz to 24 Vdc (±20%) non-polarised (filtered). Typical consumption 1.5 VA. Protection : External fuse 1 A.

  • Page 15: Coding

    Identification 1.3. CODING Basic selection Ratings 5. Load configuration Code 1. Nominal current per phase Code 16 amps Star without Neutral 25 amps Star with Neutral 40 amps Closed delta 63 amps Open delta 80 amps 100 amps 100A 125 amps 125A 6.
  • Page 16 Identification Options Communication and Certification 11. Control options Code 17. Communication Code Voltage control Digital Communication PA only : ModBus Protocol Current control Open loop Without Communication NONE PA or C16 : Voltage control and Current Limitation V2CL Power control and Current Limitation VICL 12.
  • Page 17 Identification 1-12 7300A User Manual...
  • Page 18 Installation Chapter 2 INSTALLATION Contents Page 2.1. Safety during installation ....... .2-2 2.2.

  • Page 19: Chapter 2 Installation

    Installation Chapter 2 INSTALLATION 2.1. SAFETY DURING INSTALLATION (MOUNTING AND WIRING) Danger! • 7300A 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 20: Mounting

    Installation 2.2. MOUNTING 2.2.1. TYPES OF MOUNTING Two types of mounting are possible: • DIN rail mounting or • bulkhead mounting with screws Current DIN rail mounting Bulkhead mounting rating Attachment plate DIN rail Attachment plate Screws 16 A to 40 A Two horizontal Two EN 50022 Two horizontal...

  • Page 21: Bulkhead Mounting

    Installation 2.2.4. BULKHEAD MOUNTING For 2 M4 screws 173.15 For 2 M6 screws For 2 M4 screws Figure 2-2 Bulkhead mounting - 16 A to 40 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 - 63 A to 100 A units...

  • Page 22: Wiring

    The general connection diagram shows the power terminals (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 7300 40 A / 500 V EN 60947-4-3 1/L1 3/L2 5/L3 2/T1 4/T2...
  • Page 23 Installation Protection and cut-out, installed by user Controlles Channel Terminal (supply side) Protective Earth terminal Internal fuse compartment (Thyristor protection) Internal power wiring diagram Bornes des voies contrôlées (côté charge) 2/T1 4/T2 5/T3 Internal fuse blown contact if selected Figure 2-6 General Diagram for units ≥ 125 A 7300A user Manual...

  • Page 24: Power Connections

    Installation 2.4. POWER CONNECTIONS 2.4.1. General (Ratings from 16 A to 160 A) 7300A power thyristor units comprise three channels controlled by thyristors. Terminals 1/L1, 3/L2 and 5/L3 must be wired to the three-phase supply network. Terminals 2/T1, 4/T2 and 6/T3 must be wired to the three-phase load. The protective earth terminal PE (marked with the earth symbol) must be wired to the protective earth (see section ‘Safety during installation’).
  • Page 25 Thyristor Fuses 3 Power Protective 3 Power Protective Terminals Earth Terminals Earth (supply side) ε (supply side) ε EUROTHERM 7300 EUROTHERM 7300 40 A / 500 V 40 A / 500 V EN 60947-4-3 EN 60947-4-3 1/L1 3/L2 5/L3 1/L1 3/L2...

  • Page 26: Control Connections

    Installation 2.5. CONTROL CONNECTIONS Terminal blocks on the underside of the 7300A power thyristor unit are used to connect: • the control signals (analogue and logic) • the auxiliary or electronics supply and the neutral • alarm relay and acknowledgement contacts The wires used should be stripped for a length of 6 to 7 mm.

  • Page 27: Control Signal

    100% +5 V internal Figure 2-11 Control signal connection (self-powered unit, base version) a) external signal, e.g. from Eurotherm series 2000 controller b) manual command from external potentiometer . 2.5.3. Connecting the reference neutral voltage In 4S load configuration, to enable the Diagnostic DLF and the power control VICL the neutral voltage of the three-phase supply (reference neutral) must be applied to terminal 21, marked N (EXT connector).

  • Page 28: External Power Supply Terminal Block

    It also possible to combine the power supply for electronics and the power supply for the fan, 115 V or 230 V(both the same). Protection and cut out installed by user Supply Network ε EUROTHERM 7300 63 A / 500 V EN 60947-4-3 1/L1...

  • Page 29: Alarm Relay Contact

    Installation 2.5.5. Alarm relay contact (alarm option) If one of the alarm options is fitted, an alarm relay contact is available on the ‘ALR’ terminal block (see figure 2-14). The type of contact (closed or open on alarm) is determined by the product code. Contact switching capacity: 0.25 A (maximum 250 Vac or 30 Vdc).

  • Page 30: Acknowledgement Signal

    Installation 2.5.6. Acknowledgement signal (ICO option) With the ICO option, the alarms listed below may be acknowledged with a +5 V signal applied to an ACK logic input (terminal 62) available on the ‘DIG.IN’ terminal block. • Over-load • Partial Load Failure •...

  • Page 31: Communication Bus Connection

    Installation 2.6. COMMUNICATION BUS CONNECTION 2.6.1. Polarity By convention, the voltage on line ‘ A’ of the bus, is higher than the voltage on line ‘B’ of the bus, when the RS485 line is active. 2.6.2. Wires screening To guarantee reliable operation of the digital communication link, the bus must be connected using shielded twisted pairs.

  • Page 32: Digital Communication Wiring

    Installation 2.6.5. Digital communication wiring Supervisor (Master) 220 Ω Bus line A Ground On the last unit of the bus Shield Communication bus RS485 220 Ω Bus line B Fuse 24 Vac To the next interface 24 Vdc Auxiliary supply HEAT EN 60947-4-3 1a 1b...
  • Page 33 Installation 2-16 7300A user Manual...
  • Page 34 Firing modes Chapter 3 FIRING MODES Contents Page 3.1. General and firing mode signalling ..... . .3-2 3.2. Burst mode (codes C16 and C64) ......3-2 Firing delay (XFMR option) .

  • Page 35: Chapter 3 Firing Modes

    Firing modes 3. Chapter 3 FIRING MODES 3.1. GENERAL AND FIRING MODE SIGNALLING 7300A power thyristor units can be controlled with one of the following thyristor firing types: • thyristor firing angle variation (‘Phase angle’, code PA) • a series of supply voltage cycles with zero crossing firing (‘Burst mode’, codes C16, C64, FC1, ASC) Two indicators (green ‘ON’...

  • Page 36: Firing Delay (Xfmr Option)

    Firing modes FIRING DELAY (XFMR option) In ‘Burst mode’ firing with pure resistive loads, the thyristors are fired at zero voltage crossing to avoid sharp current rises. For an inductive load (e.g. transformer primary), switching the thyristors at zero crossing generates transient over-currents (see figure 3-3a).

  • Page 37: Single-Cycle (Code Fc1)

    Firing modes 3.3. SINGLE-CYCLE (code FC1) ‘Burst mode’ firing with a single firing or non-firing cycle is known as ‘Single-cycle’. For example, with a setpoint of 50% (corresponding to a duty ratio η = 50%) the modulation comprises 1 firing cycle and 1 non-firing cycle. For duty ratios η...

  • Page 38: Phase Angle (Code Pa)

    Firing modes 3.5. PHASE ANGLE (Code PA) In ‘Phase angle’ mode the power delivered to the load is controlled by firing the transistors over a part of each supply half-cycle. Control involves varying the thyristor opening angle (α). The thyristor firing angle (θ) varies with the setpoint signal. The load voltage (v ) and current (i ) depend on the three-phase load configuration.

  • Page 39: Safety Ramp

    Firing modes 3.6. SAFETY RAMP The safety ramp involves progressively increasing the thyristor firing angle in order to apply the voltage (and current) to the load smoothly and thus reduce the start-up current of loads which have a low resistance when cold and inductive loads. ‘Phase angle’...
  • Page 40 Control / Limits Chapter 4 4. CONTROL AND LIMITS Contents Page 4.1. Control ..........4-2 4.1.1.

  • Page 41: Chapter 4 Control And Limits

    Control / Limits 4. Chapter 4 CONTROL AND LIMITS 4.1. CONTROL 4.1.1. Control parameters 7300A power thyristor units use one of the following control parameters: • rms load voltage squared V • rms load current squared I • power delivered to load P •...
  • Page 42 Control / Limits 4.2. LIMITATIONS ADJUSTEMENT (options) The thyristor units are factory-calibrated to their nominal value: I and P The limits can be adjusted by adjusting the values with the ‘I lim’ (multi-turn) and ‘VI lim’ (3/4 turn) potentiometers on the front panel. 4.2.1.

  • Page 43: Settings

    Control / Limits 4.2.2. CURRENT AND POWER LIMITATION With the contol option VICL, the following are available: • ‘I lim’ current calibration potentiometer • ‘VI lim’ power calibration potentiometer • HRC calibration control signal on the ‘ADJ.CAL’ terminal block Recalibration is possible: •...

  • Page 44: Current And Power Specifications (Options)

    Control / Limits 4.3. CURRENT AND POWER LIMIT SPECIFICATIONS The table below summarises the operation of the limits used in the 7300A series power thyristor units. Firing Control Potentiometer Operation mode type Name Action of limit V2CL I lim Thyristor unit Current limit by threshold.
  • Page 45 Control / Limits NOTE: current Control and Limitation operating condifiotns : 1 - Standard If the gap between of the three currents squared is less than 25% of the calibrated nominal current I , then the control is achived at the mean value of the three currents squared. ∆I <...
  • Page 46 Alarms Chapter 5 ALARMS Contents Page Alarm diagnostic summary ....... .5-2 5.1.Safety mechanisms .

  • Page 47: Alarm Diagnostic Summary

    Alarms ALARM DIAGNOSTIC SUMMARY The table below summarises all status LED information needed to diagnose the fault. Basic version OPTIONS all options LEDs (Front panel) T° ≥ 125 A I CO Orange Green HEAT Green HEAT Green DIAGNOSIS: Supply Over- Over- Thyristor Thyristor...

  • Page 48: Chapter 5 Alarms

    . Given the value of the equipment controlled by the 7300A, this is strongly recommended. Danger Eurotherm can supply various types of suitable alarm detector. 5.2. ALARM STRATEGY • Load monitoring (option) : monitoring of load and thyristors •...

  • Page 49: Load Monitoring

    Alarms 5.3. LOAD MONITORING Two diagnostic options are available : • GRF option (Gross Fault) which permits to detect the following serious faults : Total Load Failure : TLF Thyristor Short-Circuit : THSC Over Heating : T° (for units ≥ 125 A only) •...

  • Page 50: Setting The Dlf Alarm

    Alarms 5.3.1. Setting the DLF alarm This can be set using the push button on the front panel. The PLF detection setting can only be adjusted (reference impedance recalculated) in the following conditions : • rms voltage across load is greater than 40 % of the nominal voltage •...

  • Page 51: Functions Of Dlf Alarm Push Button

    Alarms 5.7. 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 52: Over Load Alarm

    Alarms 5.8. OVER LOAD ALARM (ICO option) The type 2 alarm (Over-current alarm) monitors the maximum current value. This alarm (and option) is known as ICO (Intelligent Chop Off). 5.8.1. Availability The ICO option is available in zero-crossing firing modes (‘Burst mode’ and ‘Single-cycle’) provided the DLF option is fitted.

  • Page 53: Standard Alarms

    Alarms 5.9. STANDARD ALARMS 5.9.1. Faults detected These alarms monitor the following faults: • supply voltage absent on one or several phases. • supply frequency outside operating limits • neutral reference voltage absent (in Star with neutral configuration, code 4S). •...
  • Page 54 Digital Communication Chapter 6 6. DIGITAL COMMUNICATION Contents Page 6.1. General ............6-2 6.1.1.

  • Page 55: Chapter 6 Digital Communication

    Digital Communication Chapter 6 DIGITAL COMMUNICATION 6.1.GENERAL Digital communication option can : • control 7300A thyristo units • monitor all operating parameters via the Supervisor. 6.1.1. Exchange type Message are exchanged in ‘Master/Slave’ mode. The digital communication option always operates as a slave, with the supervision system or PLC as Master.

  • Page 56: Configuring The Physical Address And Speed

    6.2. CONFIGURING THE PHYSICAL ADDRESS AND SPEED In order to design the power unit and the different parameters, the Modbus protocoles : • The 7000 series unit Physical address on the communication bus. • The parameter addresses which determine the parameter required.

  • Page 57: Addressing By Message Broadcasting

    Digital Communication 6.2.3. ADDRESSING BY MESSAGE BROADCASTING 00 address is reserved for the message diffusion to all the units connected to the bus. In this case, all the Slaves carry out the order but none will answer. Writing diffusion is available on every parameters with the ‘Read and Write’ status. Important ! User is responsible for ensuring that a write command broadcast does not affect the operation of other units on the same communication bus.

  • Page 58: Digital Communication Parameters

    Digital Communication 6.5. DIGITAL COMMUNICATION PARAMETERS PARAMETERS The following parameters are at fixed addresses allowing the Master Modbus in order to obtain data from the slave whatever power units from the 7000 range is used with the digital communication option. Abbreviation Parameters name Decimal...

  • Page 59: Parameters Description

    Digital Communication PARAMETERS DESCRIPTION Setpoint Local (SL) : Corresponds to the value required for the internal regulation loop of the unit. Authorised value between 0 and 255. Fast Setpoint Transfer (FS) : Used to store prepared in advance setpoints in live memory . The setpoint is transferred to the active setpoint (address 01) by sending code 05 in the command word.
  • Page 60 Digital Communication Status Word (SW) : Bit to bit status definition of the unit. Bit Number Configuration Status word for the SW parameter 0 à 3 Reserved. Product configuration Limitation mode : ‘0’ : in Phase Angle ‘1’ : by conduction inhibition 000 : PA, 001 : FC1, 010 : FC16, 011 : C64, 100 : SCA, 101 : reserved, 110 : HC16, 111 : reserved...
  • Page 61 Digital Communication Output Power Request (OP) : Corresponds to the duty ratio value in bust firing mode or to the conduction angle in phase angle firing mode. Read value between 0 and 255. Process Value (PV) : Represents the selected parameter value for the regulation system. Read value between 0 and 255.
  • Page 62 Digital Communication Manufacturer Identifier (MI) : This parameter returns ‘EUROTHERM Automation’ as an ASCII character string (32 consecutive bytes read, starting at address 65280) Command Word (CW) : This parameter is used to modify the operation of the digital communication.

  • Page 63: Remarks

    Digital Communication Serial Number (SN) : Each power units has a unique serial number at the address 65520 Communication software version number (V0) Board version number (V1) : This parameter is divided into bytes, Bits 8 to 15 correspond to the board version number and Bits 0 to 7 correspond to the software version number.
  • Page 64 Digital Communication For the firing modes : the switch between (FC1, C16, C64, SCA) to (PA or HC16) but not the other way round. It also allows the change between (FC1, C16, C64 and SCA) or between (PA or HC16) (see note 7).
  • Page 65 Digital Communication 6-12 7300A User Manual...
  • Page 66 Maintenance Chapter 7 7. MAINTENANCE Contents Page 7.3. Safety during maintenance ........7-2 7.2.

  • Page 67: Chapter 7 Maintenance

    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 68 Maintenance 7.3. THYRISTOR PROTECTION FUSES The thyristors in the 7300A 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 69: Eurotherm Worldwide Sales And Service

    EUROTHERM WORLDWIDE SALES AND SERVICE AUSTRIA ITALY Eurotherm GmbH Eurotherm SRL Tel +43 (1) 798 7601 Tel +39 (031) 975111 Fax +43 (1) 798 7605 Fax +39 (031) 977512 Web : www.eurotherm.at Web : www.eurotherm.it AUSTRALIA KOREA Eurotherm Pty. Ltd.

This manual is also suitable for:

7300a

Table of Contents