Clink II Integrated Motor Control System

Transcription

1 link II Integrated Motor ontrol ystem Product ocus Optimising plant performance, efficiency and productivity implex and redundant configuration possible lexibility of communication protocols to higher systems

2 To acquire the neccessary of operational information for appropriate management of today s process, oil & gas and chemical industries, optimum integration between process and electrical controls is indispensable. Eaton Holec s integrated link system provides plant managers with comprehensive data and opportunities to further optimize plant performance, efficiency and productivity. Over the past seven years, the link II has been successfully applied in the renowned apitole 40 Integration between process and electrical controls Motor ontrol ystem of Eaton Holec. During this relatively short period, link has been field-proven world-wide and found full appreciation from customers in: Europe (food, chemical, petrochemical industries, industrial buildings); Middle East (oil & gas extraction, chemical industries); The ar East (infrastructure, oil & gas extraction); outh America (oil refineries). What is link? link is a microprocessor-based automation system with individual control units for each motor and feeder circuit within a apitole 40 switchboard. All units execute an extensive range of protection, monitoring and control functions. In addition, serial communication is possible between the Motor ontrol entre and other systems e.g. Distributed ontrol ystem (D), upervisory ontrol And Data Acquisition ystem (ADA) and Engineering Work tation (EW). 2

3 What is link II? After a successful 5-year application period of link, an innovated version link II has been introduced to meet future market requirements. Although the principle of protection has not been changed, a number of important alterations and additions have been effectuated, viz.: The flexibility of communication with higher systems (such as D, ADA, etc.) has been extended to Modbus, Profibus, ontrol Net, Data Highway Plus, Ethernet TP/IP, etc. Process control witchgear Monitoring, maintenance & engineering D ADA EW I 1 I 2 L Due to growing safety requirements, process industries demand an ever increasing degree of system reliability and availability. or that reason, link II has now been equipped with a redundant communication link. However, for less demanding fields of application there is the opportunity to use link II as a simplex system. or internal communication the open network standard is used. This has the advantage that also frequency controllers, automatic transfer switching logic and other devices supporting can be simply implemented and configured via one and the same network. M ield R feeder/ incomer ystem structure As shown in the above diagram, three s can be distinguished: Process control This is usually governed by a D, a PL or a ADA system. The process controller controls the entire process, of which the control of motor drives often form an essential part. witchgear On this the link II system, being an integral part of the apitole 40 Motor ontrol entre, autonomously protects and monitors all motors and switchgear. In addition, the controls the motor starter in accordance with process control demands. Block diagram of system structure = tarter ontrol nit = eeder ontrol nit L = Local ontrol nit I 1 = entral Interface nit I 2 = Redundant entral Interface nit R = Remote ontrol nit = Redundant network Note: Emergency shut down from the Remote ontrol nit is always possible irrespective and independent of link II. ield Here, the motors are situated, usually fitted with a safety switch for remote control. Emergency shut down and/or motor control from the Remote ontrol nit - hard-wired to the motor starter - is possible irrespective and independent of link II. 3

4 Process ontrol Monitoring, Maintenance & Engineering link II in apitole 40 communication link ast response and highly reliable communication link, based on the AN protocol. Multi Master protocol Powerful error handling capability Redundant communication link erial communication link to process control ompatible protocols: Modbus ontrolnet Profibus Data Highway Plus Ethernet TP/IP, etc. Redundant serial communication link to process control standard functions Motor protection Thermal: - tall - Motor overload Phase unbalance Earth leakage Process underload Process overload External protection Motor control tarter control for: - Direct-on-line (single & 3-phase) - tar-delta - orward - reverse - Dual speed Manual control, manual reset Automatic restart after mains failure Monitoring of operating data Mains voltage Motor current L1, L2, L3 Earth fault current Motor temperature rise Active power Power factor tatus of contactor(s) Energy measurement (kwh) Monitoring of diagnostic and maintenance data Number of operating hours Number of contactor operations Number of contactor operations during last hour tarting current tarting time Trip current L1, L2, L3 Trip indication Time to trip Time to reset 4

5 tarter ontrol nit () or protection, monitoring and control of motor starter units. eeder ontrol nit () or measurement and control of incoming and outgoing feeders. entral Interface nit (I) An interface which provides flexibility of communication with higher systems. Local ontrol nit (L) A user interface. standard functions Measurement Voltage urrent Power factor Power requency rom these measurements a great number of values can be derived, such as: - Voltage between phases and between phase and neutral (V) - urrent through phases and neutral (A) - urrent demand (A) - Active power (kw) - Active power demand (kw) - Reactive power (kvar) - Apparent power (kva) - Active energy import (kwh) - Active energy export (kwh) - Reactive energy import (kvarh) - Reactive energy export (kvarh) - Apparent energy (kvah) Protection Earth leakage protection adjustable ontrol The unit possesses 8 digital inputs and 8 digital outputs to indicate, e.g., the status of circuit breaker and switchdisconnector. In addition the module s digital outputs enable functions such as closing or opening the circuit breaker or resetting the circuit breaker after a trip. Automatic restart after mains failure Over/nder The Over/nder function determines whether the values of voltage, current and power have fallen below or have exceeded the set. Min/Max With this function the maximum and minimum values of - Voltage - urrent - urrent demand - Active power - Reactive power - Apparent power - Active power demand can be defined. To evaluate, for example, peak demand or minimum load over a new period of time the values can be reset. 5

6 Process control PL Process control D witchgear witchgear I 1 I 2 Principle diagram of link II basic system in both simplex and redundant configuration. = redundant communication link. Principle diagram of link II system with I in both simplex and redundant configuration. = redundant I and communication link. link II configurations link II basic system The basic version of link II is not equipped with a central interface unit, so that the higher control system, (for example in the form of a PL) communicates direct with the link II network. In that case the Eaton Holec supply solely consists of the apitole 40 M/distribution board with tarter and/or eeder ontrol nits and a Local ontrol nit. The basic link II configuration is available in both simplex and redundant design. link II with I With this version, link II is provided with a central interface unit which enables communication between the Distributed ontrol ystem and link II via numerous protocols such as: Modbus Profibus ontrolnet Data Highway Plus Ethernet TP/IP etc. The I-version is also available in the simplex or redundant configuration. Redundancy The philosophy of redundancy is, that at the moment of a failure the breakdown of equipment is reduced to a minimum. or link II this means that the occurrence of any fault results worst case in loss of control of one tarter ontrol nit/eeder ontrol nit, i.e. one motor starter/feeder. Increased availability The availability of the complete system is highly increased with a dual network, e.g. consisting of a redundant I, a redundant communication link and redundant fully transparent serial links to all tarter ontrol and eeder ontrol nits. Availability and flexibility of link II is further increased by using different power supplies for the tarter ontrol and eeder ontrol nits and the communication network. Local ontrol nit The Local ontrol nit is a Windows based P giving the user full access for control, monitoring and protection settings, as well as for retrieval of the required data. The L interface is directly linked to the, making use of an R 232 converter, card or Ethernet Link. 6

7 Process control Monitoring, maintenance & engineering D ADA EW Other Eaton Holec deliveries Besides link II and apitole 40 Besides apitole 40 M/switchboards and link II Integrated Motor ontrol ystems Eaton Holec delivers ADA and EW systems. witchgear M ield I 1 I 2 R = ADA & EW systems optional deliveries of Eaton Holec. L feeder/ incomer ADA (upervisory ontrol And Data Acquisition) rom a supervisory point of view ADA systems are of a higher than PL systems, i.e. they can control lower- systems. or example, a ADA system can give a starting command to a pumping device. However, the most important task of a ADA system, the acquisition, is the retrieval and processing of data; processing in the sense of a dynamic presentation on a display unit or the creation of accounts or data files. EW (Engineering Work tations) EW (usually based on a P) is often applied on (sub)station. The system is coupled to the Integrated Motor ontrol ystem and/or feeder relays by means of a serial link. With EW it is possible to verify or, if required, change the IM/feeder relay settings. Verification of measured IM/feeder relay values is also possible. 7

8 Eaton's Electrical business is a global leader in electrical control, power distribution, and industrial automation products and services. Through advanced product development, world-class manufacturing methods, and global engineering services and support, Eaton's Electrical business provides customerdriven solutions under brand names such as utler-hammer, Durant, Heinemann, Holec and MEM, which globally serve the changing needs of the industrial, utility, light commercial, residential, and OEM markets. or more information, visit Eaton orporation is a diversified industrial manufacturer with 2004 sales of $9.8 billion. Eaton is a global leader in fluid power systems and services for industrial, mobile and aircraft equipment; electrical systems and components for power quality, distribution and control; automotive engine air management systems, powertrain solutions and specialty controls for performance, fuel economy and safety; and intelligent truck drivetrain systems for safety and fuel economy. Eaton has 55,000 employees and sells products to customers in more than 125 countries. or more information, visit Eaton Electric B.V. P.O. Box AA Hengelo The Netherlands Tel. : ax : holec-info@eaton.com Eaton Electric B.V. All rights reserved. Printed in The Netherlands. orm no B/1/G June 2005 Due to continuous research and development policy Eaton reserves the right to make changes in design and specifications of the products without prior written notice.