BENSHAW ENHANCED KEYPAD Manual de usuario descargar pdf (Pagina 12)

12

DC Injection Braking Starter Product Highlights:

SOLID STATE STARTER WITH DC INJECTION CONTROL

RB2/RB3 Series Starter

with DC Injection Brake

Benshawoffersamicroprocessor

controlledsolidstatereducedvolt-

agestarterwithdcinjectionbraking

forthreephaseinductionmotors.The

starterprovidesaclosedloopcurrent

rampforsmoothsteplessmotor

acceleration.

TheMX

2

/MX

3

starterwithdcinjec-

tionbrakeconsistsoftheBenshaw3

phaseSCRpowerstackforthesoft

start,withanintegratedSCRpower

blockpowerfuseandcontrollogicfor

thedcinjectioncircuit.

Key Advantages:

• BenshawMX

2

/MX

3

technology

• Standardandheavydutydcinjection

brakecongurationsavailable

• Modularpowerstackdesignforease

ofmaintenance

• Solidstatestarteranddcbrake

integratedinonepackage

• Integralbypasscontactordesign

• AdvancedMX

2

/MX

3

motorprotection

• AdvancedMX

2

/MX

3

meteringfunction

• Realtimeclock

• 99eventloghistory

• Modbuscommunication

• Congurableoutputrelays

• Reducedmaintenance

• Reversingcapabilitiesarealsoavailable

RATINGS

Horsepower: 20 - 1,500 HP

Overload: 500% for 30 seconds

125% continuous

Starting

Torque: 0 - 100%

Voltage: 200 - 1,000 Vac

Standard 300% braking

Duty: current for 30

seconds

Heavy 300% braking

Duty: current for 60

seconds

TheMX

2

/MX

3

dcinjectionbrakeSCR

systemallowsafreewheelingpath

forthedccurrentthatcirculatesinthe

motorwindings.Whenthedccurrent

isappliedtotheacmotorwindings,

brakingactionisachievedasthecir-

culatingmotorrotortriestoalignitself

withthestationarydceld,thusgiving

themotorsmoothelectronicbraking

action.

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