Clink II Integrated Motor Control System

• Optimising plant performance, efficiency and productivity • Simplex and redundant configuration possible • Flexibility of communication protocols to higher level systems

To acquire the neccessary level 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 Clink system provides plant managers with comprehensive data and opportunities to further optimize plant performance, efficiency and productivity. Over the past seven years, the Clink II has been successfully applied in the renowned Capitole 40

Integration between process and electrical controls Motor Control System of Eaton Holec. During this relatively short period, Clink 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 Far East (infrastructure, oil & gas extraction); South America (oil refineries).

What is Clink? Clink is a microprocessor-based automation system with individual control units for each motor and feeder circuit within a Capitole 40 switchboard. All units execute an extensive range of protection, monitoring and control functions. In addition, serial communication is possible between the Motor Control Centre and other systems e.g. Distributed Control System (DCS), Supervisory Control And Data Acquisition System (SCADA) and Engineering Work Station (EWS).

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What is Clink II? After a successful 5-year application period of Clink, an innovated version Clink 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 level’ systems (such as DCS, SCADA, etc.) has been extended to Modbus, Profibus, Control Net, Data Highway Plus, Ethernet TCP/IP, etc. • Due to growing safety requirements, process industries demand an ever increasing degree of system reliability and availability. For that reason, Clink II has now been equipped with a redundant communication link. However, for less demanding fields of application there is the opportunity to use Clink II as a simplex system. • For internal communication the open network standard DeviceNet is used. This has the advantage that also frequency controllers, automatic transfer switching logic and other devices supporting DeviceNet can be simply implemented and configured via one and the same network.

System structure As shown in the above diagram, three levels can be distinguished: • Process control level This level is usually governed by a DCS, a PLC or a SCADA system. The process controller controls the entire process, of which the control of motor drives often form an essential part. • Switchgear level On this level the Clink II system, being an integral part of the Capitole 40 Motor Control Centre, autonomously protects and monitors all motors and switchgear. In addition, the SCU controls the motor starter in accordance with process control demands.

Process control level

Monitoring, maintenance & engineering

DCS

SCADA

EWS

LCU Switchgear level

CIU 1

CIU 2

DeviceNet

S C U

M

RCU

S C U

S C U

F C U

F C U

F C U

feeder/ incomer

Field level

Block diagram of system structure SCU = Starter Control Unit FCU = Feeder Control Unit LCU = Local Control Unit CIU 1 = Central Interface Unit CIU 2 = Redundant Central Interface Unit RCU = Remote Control Unit = Redundant network Note: Emergency shut down from the Remote Control Unit is always possible irrespective and independent of Clink II.

• Field level Here, the motors are situated, usually fitted with a safety switch for remote control. Emergency shut down and/or motor control from the Remote Control Unit - hard-wired to the motor starter - is possible irrespective and independent of Clink II.

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Process Control

Monitoring, Maintenance & Engineering

Clink II in Capitole 40 DeviceNet communication link Fast response and highly reliable communication link, based on the CAN protocol. • Multi Master protocol • Powerful error handling capability

Redundant DeviceNet communication link Serial communication link to process control Compatible protocols: • Modbus • ControlNet • Profibus • Data Highway Plus • Ethernet TCP/IP, etc.

Redundant serial communication link to process control

SCU standard functions Motor protection

• Thermal: - Stall - Motor overload • Phase unbalance • Earth leakage • Process underload • Process overload • External protection Motor control

• Starter control for: - Direct-on-line (single & 3-phase) - Star-delta - Forward - reverse - Dual speed • Manual control, manual reset • Automatic restart after mains failure

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Monitoring of operating data

• • • • • • • •

Mains voltage Motor current L1, L2, L3 Earth fault current Motor temperature rise Active power Power factor Status 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 Starting current Starting time Trip current L1, L2, L3 Trip indication Time to trip Time to reset

Starter Control Unit (SCU)

Feeder Control Unit (FCU)

For protection, monitoring and control of motor starter units.

For measurement and control of incoming and outgoing feeders.

Central Interface Unit (CIU)

Local Control Unit (LCU)

An interface which provides flexibility of communication with ‘higher level’ systems.

A user interface.

FCU standard functions Measurement

• Voltage • Current • Power factor • Power • Frequency From these measurements a great number of values can be derived, such as: - Voltage between phases and between phase and neutral (V) - Current through phases and neutral (A) - Current 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

Control

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/Under

The Over/Under function determines whether the values of voltage, current and power have fallen below or have exceeded the set level. Min/Max

With this function the maximum and minimum values of - Voltage - Current - Current 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

Process control level

Process control level

PLC

DCS

Switchgear level

Switchgear level

CIU 1 DeviceNet

DeviceNet

S C U

S C U

S C U

S C U

F C U

F C U

F C U

F C U

S C U

S C U

S C U

S C U

F C U

F C U

F C U

F C U

Principle diagram of Clink II basic system in both simplex and redundant configuration. = redundant DeviceNet communication link.

Principle diagram of Clink II system with CIU in both simplex and redundant configuration. = redundant CIU and DeviceNet communication link.

Clink II configurations

Redundancy

Clink II basic system

The philosophy of redundancy is, that at the moment of a failure the breakdown of equipment is reduced to a minimum. For Clink II this means that the occurrence of any fault results worst case in loss of control of one Starter Control Unit/Feeder Control Unit, i.e. one motor starter/feeder.

The basic version of Clink II is not equipped with a central interface unit, so that the higher control system, (for example in the form of a PLC) communicates direct with the Clink II DeviceNet network. In that case the Eaton Holec supply solely consists of the Capitole 40 MCC/distribution board with Starter and/or Feeder Control Units and a Local Control Unit. The basic Clink II configuration is available in both simplex and redundant design.

Clink II with CIU With this version, Clink II is provided with a central interface unit which enables communication between the Distributed Control System and Clink II via numerous protocols such as: • Modbus • Profibus • ControlNet • Data Highway Plus • Ethernet TCP/IP etc. The CIU-version is also available in the simplex or redundant configuration.

Local Control Unit The Local Control Unit is a Windows based PC giving the user full access for control, monitoring and protection settings, as well as for retrieval of the required data. The LCU interface is directly linked to the DeviceNet, making use of an RS 232 converter, DeviceNet card or Ethernet Link.

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CIU 2

Increased availability The availability of the complete system is highly increased with a dual network, e.g. consisting of a redundant CIU, a redundant DeviceNet communication link and redundant fully transparent serial links to all Starter Control and Feeder Control Units. Availability and flexibility of Clink II is further increased by using different power supplies for the Starter Control and Feeder Control Units and the DeviceNet communication network.

Process control level

Monitoring, maintenance & engineering

DCS

SCADA

EWS

LCU Switchgear level

CIU 1

CIU 2

M

S C U

S C U

F C U

RCU

Field level

= SCADA & EWS systems optional deliveries of Eaton Holec.

F C U

Besides Clink II and Capitole 40 Besides Capitole 40 MCC/switchboards and Clink II Integrated Motor Control Systems Eaton Holec delivers SCADA and EWS systems.

SCADA (Supervisory Control And Data Acquisition) From a supervisory point of view SCADA systems are of a higher level than PLC systems, i.e. they can control lower-level systems. For example, a SCADA system can give a starting command to a pumping device. However, the most important task of a SCADA 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.

DeviceNet

S C U

Other Eaton Holec deliveries

F C U

EWS (Engineering Work Stations)

feeder/ incomer

EWS (usually based on a PC) is often applied on (sub)station level. The system is coupled to the Integrated Motor Control System and/or feeder relays by means of a serial link. With EWS it is possible to verify or, if required, change the IMCS/feeder relay settings. Verification of measured IMCS/feeder relay values is also possible.

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Eaton's Electrical Sector is a global leader in power distribution, power quality, control and automation, and monitoring products. When combined with Eaton's full-scale engineering services, these products provide customerdriven PowerChain™ solutions to serve the power system needs of the data center, industrial, institutional, public sector, utility, commercial, residential, IT, mission critical, alternative energy and OEM markets worldwide.

Eaton Industries (Netherlands) B.V. P.O. Box 23 7550 AA Hengelo The Netherlands Tel.: +31 (0)74 - 246 40 10 Fax: +31 (0)74 - 246 40 25 [email protected]

PowerChain™ solutions help enterprises achieve sustainable and competitive advantages through proactive management of the power system as a strategic, integrated asset throughout its life cycle, resulting in enhanced safety, greater reliability and energy efficiency. For more information, visit www.eaton.com/electrical.

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. © 2011 Eaton Corporation All rights reserved. Form. 1993155G0101 April 2011