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Overview

The SMC-250 Synchronous Motor Controller is a prepackaged control

and protection solution for brushless, synchronous motor applications.

It features the DECS-250 Digital Excitation Control System and a Basler

Electric protection device for motor pullout protection. Both are integrated

into a compact package that is preconfigured, prewired, and tested for

easy installation in a new or existing enclosure, saving installation and

commissioning time.

Features

• 20-ampere, pulse-width-modulated (PWM), insulated-gate bipolar

transistor (IGBT) power stage

• Single DECS-250 or dual, redundant DECS-250 option

• Control modes: var/power factor, field current regulation, and field

voltage regulation

• Available protection:

-Power factor/loss of synchronization (55)

-Over/Under Field Current (40)*

-Fuse loss detection protects against false trip due to loss of voltage

sensing (60FL)*

-Up to 24 resistive temperature detectors (49RTD) inputs provide

thermal protection with an optional remote RTD module*

-Up to 100 starts per time interval protection (66)*

-Undervoltage (27)

-Overvoltage (59)

-Instantaneous undercurrent (37)*

-Instantaneous overcurrent (50)*

• Communication provisions:

-USB

-Modbus® RS-485 RTU

-Ethernet 100Base-T (Modbus TCP)

• Monitoring:

-Real-time monitoring

-Data logging

-Sequence of events recorder

• Programmable logic for DECS-250 and BE1-11m option

Features

• Multiple Control Modes

-Var/Power Factor

-Field current regulation

-Field voltage regulation

• Up to 10-amp pulse-width-modulated (PWM) insulated-gate bipolar

transistor (IGBT) power stage

• BESTCOMSPlus® PC software

• Preprogrammed logic

• Autotracking between modes of operation

• Real-time monitoring

• Sequence-of-events recording

• Extensive communication available

-USB

-CAN bus communication

-Ethernet 100Base-T (Modbus® TCP)

• CE compliant

• Comprehensive protection

-ES-74S relay for overexcitation protection

-ES-55 relay for power factor protection

-RTD monitoring/temperature protection with optional AEM-2020

Analog Expansion Module

-DECS-150 integrated protection

• ICRM (Inrush Current Reduction Module) for station-powered

applications

Overview

The SMC-150 Synchronous Motor Controller is a prepackaged solution for

applications requiring a single DECS-150 Digital Excitation Control System.

The system is preconfigured to adapt to a wide variety of installations

including existing or new cubicles. With the DECS-150’s enhanced capabilities,

precise motor control can be obtained. The SMC-150 is designed, built, and

completely tested in one location to optimize performance.

Benefits

• Complete monitoring of a synchronous motor and streamlined

control offer increased reliability.

• Various excitation limiters keep the system within the prescribed

parameters and prevent tripping.

• The DECS-150. used on the SMC-150. is programmed using

BESTlogic™Plus within BESTCOMSPlus® software. With its intuitive

interface, BESTlogicPlus provides the flexibility to create custom

logic schemes to meet specific requirements.

• Real-time monitoring and event recording capture occurrences

within the system for live data analysis.

• Prewired chassis for easy installation into new or existing enclosures.

• Current transformer (CT) shorting provision for added safety.

• Our prewired solutions minimize the need for system-level design

time.

• The Offline Simulator, provided in BESTlogicPlus, helps identify and

troubleshoot the logic without the physical hardware.

• Design work done by the experts in excitation technology.

Features

• Negative Forcing

• 20-amp, six-thyristor rectifier bridge

• Single and dual redundant DECS-250N option

• Dual control power provisions

• BESTCOMSPlus® PC software

• Preprogrammed logic

• Autotracking between modes of operation

• Autotracking between DECS-250N units for dual controller systems

• Real time monitoring

• Sequence of events recording

• Automatic tuning

• Extensive communication available

• USB

• CAN bus communication

• Modbus® RS-485 RTU

• Ethernet 100Base-T (Modbus TCP)

• Reactive load sharing over communication

• Field flashing provisions

• Provisions for sync check

• Optional automatic synchronizer

• Optional integrated power system stabilizer (PSS)

• Optional BE1-11g Generator Protection System available on

pan chassis/mounting plate

Overview

The SGC-250N Synchronous Generator Controller is a prepackaged solution

for applications that require single or dual DECS-250N Digital Excitation Control

Systems. With the DECS-250N’s enhanced capabilities and negative forcing,

precise generator voltage control can be obtained. An optional integrated BE1-11g

Generator Protection System provides generator current differential protection,

monitoring, and metering with multiple generator protection schemes.

Benefits

• Negative forcing provides exceptional responses to system

transients and load disturbances.

• The DECS-250N and optional BE1-11g used on the SGC-250N

are programmed using BESTlogic™Plus within BESTCOMSPlus

software. With its intuitive interface, BESTlogicPlus provides

the flexibility to create custom logic schemes to meet specific

requirements.

• An automatic tuning feature is integrated into the DECS-250N

to reduce commissioning time and provide excellent system

performance.

• Real time monitoring and event recording capture occurrences

within the system for live data analysis.

• Prewired for easy installation into new or existing enclosures.

• Dual control power provides redundancy to prevent undesired

shutdown.

• Current transformer (CT) shorting provision for added safety.

• The SGC-250N is designed, built, and tested to optimize

performance and reliability.

Features

• 15-amp pulse-width-modulated (PWM) insulated-gate bipolar transistor

(IGBT) power stage

• Single and dual redundant DECS-250 option

• Dual control power provisions

• BESTCOMSPlus® PC software

• Preprogrammed logic

• Autotracking between modes of operation

• Autotracking between DECS-250 units for dual controller systems

• Real time monitoring

• Sequence of events recording

• Automatic tuning

• Extensive communication available

-USB

-CAN bus communication

-Modbus® RS-485 RTU

-Ethernet 100Base-T (Modbus TCP)

-Profibus (optional)

• Reactive load sharing

• Field flashing provisions

• Provisions for sync check

• Optional automatic synchronizer

• Optional integrated power system stabilizer (PSS)

• Optional BE1-11g Generator Protection System available on

pan chassis/mounting plate

Overview

The SGC-250 Synchronous Generator Controller is a prepackaged solution

for applications that require single or dual DECS-250 Digital Excitation Control

Systems. With the DECS-250’s enhanced capabilities, precise generator voltage

control can be obtained. An optional integrated BE1-11g Generator Protection

System provides generator current differential protection, monitoring, and

metering with multiple protection schemes to assist with generator protection.

Benefits

• The DECS-250 and optional BE1-11g used on the SGC-250 are

programmed using BESTlogic™Plus within BESTCOMSPlus

software. With its intuitive interface, BESTlogicPlus provides

the flexibility to create custom logic schemes to meet specific

requirements.

• An automatic tuning feature is integrated into the DECS-250

to reduce commissioning time and provide excellent system

performance.

• Real time monitoring and event recording capture occurrences

within the system for live data analysis.

• Prewired for easy installation into new or existing enclosures.

• Dual control power provides redundancy to prevent undesired

shutdown.

• Current transformer (CT) shorting provision for added safety.

• The SGC-250 is designed, built, and completely tested to optimize

performance and reliability

Features

• Up to 10-amp pulse-width-modulated (PWM) insulated-gate bipolar

transistor (IGBT) power stage

• Single and dual redundant DECS-150 option

• BESTCOMSPlus® PC software

• Preprogrammed logic

• Autotracking between modes of operation

• Autotracking between DECS-150 units for dual controller systems

• Real time monitoring

• Sequence of events recording

• Automatic tuning

• Extensive communication available

-USB

-CAN bus communication

-Ethernet 100Base-T (Modbus TCP)

• Reactive load sharing over Ethernet

• Optional field flashing provisions

• Optional integrated power system stabilizer (PSS)

• Agency: CE

• Protection

-ES-74S

-DECS-150 integrated protection

• ICRM for station-powered applications

Overview

The SGC-150 Synchronous Generator Controller is a prepackaged solution

for applications requiring a single or dual DECS-150 Digital Excitation Control

System. The system is preconfigured to adapt to a wide variety of installations

including existing or new cubicles. With the DECS-150’s enhanced capabilities,

precise generator voltage control can be obtained. The SGC-150 is designed,

built, and completely tested in one location to optimize performance.

Benefits

• The DECS-150. used on the SGC-150. is programmed using

BESTlogic™Plus within BESTCOMSPlus software. With its intuitive

interface, BESTlogicPlus provides the flexibility to create custom

logic schemes to meet specific requirements.

• An automatic tuning feature is integrated into the DECS-150

to reduce commissioning time and provide excellent system

performance.

• Real time monitoring and event recording capture occurrences

within the system for live data analysis.

• Prewired for easy installation into new or existing enclosures.

• Current transformer (CT) shorting provision for added safety.

• Our system approach minimizes the need for system-level design

time.

• The Offline Simulator, provided in BESTlogicPlus, helps identify and

troubleshoot the logic without the physical hardware.

• Design work done by the experts in excitation technology.

Features

• Precise excitation control for synchronous generator or synchronous

motor applications.

• True RMS sensing, single-phase or three-phase voltage and current.

• Full generator or motor metering capabilities.

• Automatic Voltage Regulation / Field Current Regulation / Field Voltage

Regulation, Power Factor and var modes of operation.

• Integrated generator protection (27/59. 81O/U, 32R, 40Q), 59F, 51F, Field

Short Circuit, and 25 Sync Check.

• Load sharing over Ethernet.

• Auto tuning feature with two PID stability groups.

• Configurable protection.

• Conformal coating is applied to certain internal circuitry for additional

protection and reliability.

• Overexcitation limiting (with temperature compensation).

• Underexcitation limiting.

• Stator current limiting (with temperature compensation).

• Var limiting.

• Underfrequency limiting or V/Hz limiting.

• Trending, oscillography, and sequence of events recording.

• Ten programmable contact inputs.

• Nine programmable contact outputs.

• I/O expansion module compatibility.

-AEM-2020 Analog Expansion Module.

-CEM-2020 Contact Expansion Module.

• Single- or three-phase power input.

• Automatic synchronizer option.

• Compact enclosure.