Medium Voltage Solid State Starters Advanced motor control
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1. G FAIRFORD ELECTRONICS centris Medium Voltage Solid State Starters Advanced motor control protection and monitoring in a reliable field proven soft starter centris Expect peak performance from your critical medium voltage equipment when your motors are protected and controlled by Fairford Electronics Centris Soft Starters The power of performance in an unpredictable world the Centris Starter protects both your motor and your load Motor and starter protection is taken to a new level by combining a high end motor protection relay with a heavy duty solid state starter Flexible control features and selectable ramping profiles to match any application no need to compromise performance High level circuit isolation via fibre optics standard on all units for safety and power quality immunity Sealed NEMA 12 IP55 enclosures are standard eguipment not an expensive option Soft start amp protect any AC motor The Centris Starter is designed to start AC motors in any fixed speed application It provides maximum protection with True Thermal Modelling while allowing smooth stepless control of acceleration and deceleration The Centris Starter guarantees power control and protection for your most important assets Heavy duty attitude Highest rated power devices for maximum current carrying capacity Rated at 500 for 60 seconds the Centris Starter will2. electronic fuse tripping faster than most fuses and circuit breakers Phase Rotation Phase Loss and Current Imbalance Protection Under Voltage Over Voltage and Line Frequency trips and alarms protect against power problems from the utility or generator Ground Fault Option Zero Sequence ground fault protection can be provided to protect equipment from damage due to faulty grounded conductors or motor windings Separate High fast and Low slower trip points and alarm levels are available to help prevent nuisance trips The ground fault protection CT uses a fibre optic connection for safety isolation ANSI IEE System Protection Features 19 Reduced voltage soft starts 27 Under voltage 37 Undercurrent 46 Current imbalance 47 Phase rotation 48 Locked rotor incomplete seguence 49 Pt electronic motor overload 50 Instantaneous electronic over current trip 51 Over current 53 Power factor trip 59 Over voltage protection 66 Starts per hour and time between starts 81 Frequency variance 86 Lockout start inhibit 50N 51G N Ground fault detection instantaneous and current 49 38 Stator and bearing RTD protection 14 Speed switch and tachometer trip Y NU ER ERA ER SS SSIES S V RTD Input Option for Precise Thermal Management Thermally biased programmable RTD inputs can be multiple types and can be individually named Each RTD can be assigned to an output relay with different values for
3. never be the limiting factor in your application Powerful sustained gate pulse ensures reliable SCR firing without reactors unlike inferior pulse train designs that require a reactor to prevent SCR and motor damage Experience where it counts With over 500 000 low voltage and medium voltage soft starters in operation Fairford Electronics has the application expertise you need No other soft starter manufacturer takes this product more seriously or has as much experience applying solid state starters The Centris Starter is the pinnacle of product development and is recognized by users and OEMS around the world as the best Medium Voltage Soft Starter on the market today ONO Advanced motor protection relay and ramp features programmable via the keypad or a laptop computer Fibre optically isolated low voltage compartment with up to 110kV BIL rating for safety and reliability Built in 120V control power transformer voltage and current metering Load break fault make rated disconnect switch with door safety interlocking Visible grounding bar for safe operation Coordinated motor fuses with blown fuse indicators Line isolation vacuum contactor Fully rated bypass contactor for increased thermal capacity and optional across the line starting 9 Heavy duty SCR stack assemblies with ring transformer isolation for reliable SCR gate fixing 10 RTD Option accepts up to 12 RTD inputs 11 Zero sequ
4. Curves Via plotted torque time axis points Pump Flex Deceleration 1 60 seconds with begin amp end torque adj Kick Start 0 1 2 0 seconds 10 100 voltage Tach Feedback option Closed loop speed ramp Motor and Starter Protection Phase Loss Phase Reversal Over Under Current Shorted SCR Shunt Trip Coast Down Lockout Time between starts Ground Fault Option Electronic Overload Phase Imbalance Short Circuit Detection Over Under Voltage Starter Over Temp Starts per Hour Lockout RTD Input Option Statistical Data Elapsed run time last start time average starting current stores history of up to 60 events data includes date amp time phase amp ground fault current Also displays time to trip remaining inhibit time and starts hour values Metering Voltage amp Current Percent of FLA phase currents KVAR kVA KW power factor demand avg start current re maining thermal register thermal capacity to start measured capacity to start time since last start line frequency phase order RTD values optional Enclosure Communications NEMA 12 with 3R optional not for direct sun applications top and bottom entrance plates 11 gauge steel ASA 61 gray powder coated paint RS485 with Modbus RTU protocol or RS232 with windows interface centris Fe FAIRFORD EEE Eos info fairford com www fairford com CE gG A E S E A gt 2 TA o UA
5. Flexible Setup Choose the level of overload protection e Programmable Trip Classes selectable from IEC NEMA Classes 5 30 Dual Mode Protection separate trip curves for start and run modes example Class 20 for start Class 10 for run Warning Levels can be programmed and assigned to one of six built in output relays Custom Trip Curve programmable based on the motor manufacturer s data or it can use a Learned Overload Curve that reflects normal running condition with a programmable trip bandwidth Remote or Automatic Overload Reset can be activated for unattended operation Dynamic Reset Response lt Overload Learned thermal ca pacity used in starting Cooling rate while tripped on Overload No RESET until sufficient lt capacity is recovered for successful start The Centris Soft Starter provides the system protection features found in expensive stand alone Motor Protection Relays without costly add on cards or discreet devices Over Current Electronic Shear Pin trip and alarm safeguards your motor and equipment Protects against jammed loads sand in pumps detects worn out blades etc Under Current Load trip and alarm sensing detects an underloaded motor due to shaft belt breakage or loss of prime in pumping systems Dual Mode Short Circuit Trip exclusive toe in the water circuit pre checks the motor to prevent starting into a shorted load In the Run mode it becomes an
6. 5 S 8 BS Lass designed by www dtwocreative co uk
7. 5kV 800 Amps Contact Fairford Electronics for higher rating requirements Overload Rating AC53b 600 30 60m Power Circuits Series strings of SCR power modules 1 2 or 3 matched pairs of SCRs per phase depending on voltage rating SCR Peak Inverse Voltage Line Voltage PIV Rating Line Voltage PIV Rating 2300 6500 6500 19500 3300 9000 6900 7200 26000 4160 13000 11000 27000 6000 18000 13 15kV 39500 BIL Rating Transient Voltage Protection 2300V 7200V 60kV 11000 15000V 110kV dv dt circuits 1 per SCR pair Vacuum Bypass Contactor Standard on all models line start rated Ambient Operating Conditions 0 50 C 82 F to 122 F Optional 20 to 50 C with heaters 5 95 relative humidity 0 3300 ft 1000m above sea level without derating Digital Control Unit DCU Programmable keypad operator with 2 lines x 20 character backlit LCD display Status Alarm LEDs indicate Power Run Alarm Trip Aux 1 8 Auxiliary Contacts Multiple Form C contacts rated 5A 250VAC max 6 fully programmable relays including fail safe operation 5 dedicated relays fault at speed etc Programmable Features Motor FLA service factor insulation class Dual Ramp Adjustments Two independent settings for Initial Torque 0 100 of nominal torque voltage or current Current Limit 200 600 of motor FLA Acceleration Time 1 120 seconds Power Ramp Function Three Custom
8. a standard feature of the Centris start and a key reason for choosing Fairford Electronics solid state soft starters over other more traditional methods of motor control Experience the difference Pump Flex Deceleration A gradual reduction in the output torque of your pump motor is provided when a stop signal is initiated When the motor output reaches a point where the check valve can be safely and gently closed the Pump Flex circuit automatically turns itself off No need for external timers or auxiliary controls Maximize performance Since no two pumps or pump applications are exactly the same the flexible settings of Pump Flex deceleration control allow you to tailor the output to precisely match your application requirements Eliminate the damaging effects of Water Hammer When traditional electro mechanical motor controls are used motor torque is immediately lost when the power is turned off The fluid that is flowing through the system and the kinetic energy associated with it immediately reverses direction To prevent the reverse flow a check valve typically is slammed shut trapping the kinetic energy in the piping system This creates a shockwave often referred to as Water Hammer Minimize maintenance costs amp downtime By gradually reducing motor torque using Pump Flex deceleration control this potentially destructive pump output pressure is allowed to slowly dissipate in the system during the
9. alarm or trip Temperatures are recorded to the fault history and can be used to activate warning or trip relays based on setpoints 12 RTD inputs can be configured in software to match the RTD material used and can be monitored at the keypad or remotely Real time Clock Features e Coast Down Back Spin Lockout programmable up to 60 minutes prevents a start attempt when the motor load is backspinning when the motor is turned off Elapsed Time Metering indicates run time for scheduled maintenance or trouble shooting help Time Between Starts Lockout eliminates motor and equipment damage caused by repeated start commands Time and Date Stamping of faults for precise recording of what happened when Starts per Hour Lockout Short Cycle Timer allows you to program the maximum number of starts per hour and provides a programmed wait time 0 60 minutes between start attempt Standard Optional Optional Optional The perfect start Choose the acceleration ramp that is best for your application with the flexibility of microprocessor based ramp control Pumps Fans Blowers amp Conveyors e Closed Loop Torque CLT using PID algorithms is ideal for deep well pumps or systems where the load conditions change from one start to the next e Linear Soeed Ramping can be achieved by adding a tachometer feedback signal from the motor Compressors amp Chillers e Voltage Ramp with Current Limit for applications t
10. ence ground fault protection option 12 Top entry bottom exit with room for stress cones Removable entry plates for easy connections 13 NEMA 12 IP55 gasketed enclosure NEMA 3R optional Soft Start Only model available for retrofit applications Does not include disconnect switch line isolation contactor or CPT Customer supplied line start panel required All the features of a motor protection relay without the added cost True Thermal Modelling monitors the motor for excessive thermal conditions due to starting running and even ambient conditions Retentive Thermal Memory for continuous overload protection even after a complete power loss When power is restored the Centris Starter remembers the last thermal condition of the motor observes the off time via a real time clock and adjusts the thermal model accordingly Non Volatile Memory stores the thermal memory without the need for batteries True Time Thermal Tracking adjusts the thermal model for different cooling rates based on motor temperature running state or power loss Dynamic Reset Response Reset is only allowed after the motor has sufficient thermal capacity for a successful restart Thermal Model Biasing adjusts for heating effects of phase current imbalance or optional RTD inputs Motor Thermal Model lt Overload Thermal ca pacity used in starting Capacity regained from cooling while running lt Remaining thermal capacity
11. hat need the smoothness of voltage ramping while maintaining the ability to start in limited power environments e For maximum motor power where the available power supply is severely limited a Current Limit Current Step start can be used Process Machinery e The Jog function can be used in initial machine setup Apply just enough voltage torque to rotate the motor shaft without accelerating to full speed e Dual ramps are built in allowing for different load conditions and ramping requirement Generator Powered amp Mobile Equipment e Protect the integrity of your process even when power conditions are less than perfect e Reliable SCR firing even during frequency drift that may occur with portable equipment or backup generators e No need for reactors regardless of motor lead length or system Capacity Start Full Speed Start Full Speed l i Closed Loop Current Voltage Ramp w i Torque Ramp Current Limit I I E i I I I I I i i I l Torque I I Voltage 1 i i Pump Flex CONTROL Custom acceleration Curves Can be programmed to match your pump and hydraulic conditions Select up to eight time and torque points for smooth acceleration of your pump without surges or undue motor thermal stress Three selectable custom curves can be programmed to accommodate changing load pump conditions or for different processes Pump Flex Deceleration Control Is
12. rameter editing and commissioning E mail and Export commissioning data directly from the software Parameter compare functions Parameter settings export to popular file format PDF XLS RTF etc Application Setup Wizard Visual Programming point and click on visual terminal strip Available communication options for the Centris Starter include DeviceNet Profibus Ethernet Modbus TCP IP and several others The Centris Starter can also be used in combination with Monitor Panel with 4 programmable signals Trend recorder with 6 programmable channels storage triggering and playback mode Status and Diagnostics Panel for quick drive status and fault history overview Communication connection for serial and USB Comprehensive help and product user manual Multi drop network support for trend recorder monitor and diagnostics panel Demo modes for all interactive functions Automatic Software Updates Communication Options Remote Monitoring the VirtualSCADA VS1 remote monitoring device allowing for monitoring the Centris Starter via a standard web browser or for use with the VirtualSCADA VS2 for communication over Ethernet Type of Load AC Supply Voltage Technical Highlights 3 phase medium voltage AC induction or synchronous motors 2300 3300 4160 6000 7200V 11 15kV VAC 10 to 15 50 60 Hz line voltages HP Ratings Up to 10 000 HP 7 2kV 1500 Amps Up to 20 000 HP 1
13. stopping process Check valves close gently and other fluid system components including pipes valves flanges couplings and hangers are no longer subjected to the shock and destructive potential of water hammer 3 Selectable curves w 2to B Time Torque points per curve P ump running 1 Stop command Pump output affected Check valve loses Pump off Pump Flex Decel Customised Line Ups centris centre Advanced Integration Specifically designed for ease of integration into automated systems the Centris Starter offers communications and flexible I O as standard Flexible I O e 120Vac control power input accepts long control circuit runs without the need for interposing relays e 8 programmable relay outputs for control flexibility without the ir F a need for external auxiliary relays or add on cards GEN 5 e 2 programmable analog outputs 0 10Vdc or 4 20mA Communication Ready Built in comm ports e RS 232 for one on one communications with a PC e RS 485 for multi drop communications with Modbus RTU protocol as standard Centris MLink Commissioning Software The Centris MLink Windows based software offers users the ability to program startup and trouble shoot the Centris Starter via the built in RS485 connection The Centris MLink reduces startup time and allows for commissioning data to be backed up and e mailed directly from the software Other features Include Pa
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