Single Phase Soft Starter - Baldor.com

1 Single PhaseSoft StarterInstallation & Operating Manual6/02MN834 Table of ContentsTable of Contents iMN834 Section 1 General Information1 1.. General Description1 1.. Catalog Number1 1.. Specifications1 2.. Replacement SCR1 4.. Replacement Fan1 4.. Enclosures and Ventilation1 4.. Warranty1 4.. Safety Notice1 5.. Section 2 Installation2 1.. Receiving and Storage2 1.. Location and Mounting2 1.. Wiring2 1.. Section 3 Start up and Operation3 1.. Start Up Procedure3 1.. Maintenance3 1.. Troubleshooting3 2.. Operation3 3.. Schematic3 4.. ii Table of ContentsMN834 Section 1 General InformationGeneral Information 1 1MN834 General DescriptionThe Single Phase Starter reduces the starting current and torque ofsingle Phase AC induction motors.

2 The control uses solid state circuitryand a bilateral SCR switch to gradually ramp up motor voltage over timeduring Single Phase Starter is well suited for use with equipment such as cropdryers, augers, bucket elevators, and fan or pump applications. The needin these applications is to prevent high torque jerks and provide a smoothcushion, and at the same time apply a soft start for a short : motor loads that require full voltage starting torque to reach full speed maynot be compatible for use with this NumberThe catalog number contains all the information necessary to determine thefeatures of the unit.

3 The complete five digit catalog number appears onthe invoice, packing list, and shipping carton. The catalog number on thecontrol module and the panel will only have the digits necessary to definethat part of the to read the catalog number SInput Voltage2=115/230 VAC 50/60 HzFLA Current Rating0=7 Amps1=12 Amps2=24 Amps3=40 Amps5=110 Amps02 CAEnclosureA=Open Form (chassis mopunt)B=NEMA Type 1C=NEMA Type 12E=NEMA Type 3 RConfiguration C= Single PhaseType S= Single Phase StarterCustom units are identified by the above 5 digit number plus a 3digit extension. Documentation required for a custom unit isprovided with the control and is not included in this 2 General InformationMN834 SpecificationsInput RatingsS20 CAS21 CAS22 CAS23 CAS25 CAFrequency50 / 60Hz 5%Voltage 10% of rated voltagePhaseSingle PhaseOutput RatingsS20 CAS21 CAS22 CAS23 CAS25CA HP Rating115 VAC1/4hp1/2hp2hp3hp10hpHP Rating230 VAC3 Current Rating7 Amp12 Amp24 Amp40 Amp110 AmpOverload RatingContinuous 115% of FLA; 400% for 30 Seconds at 3300 ft.

4 (1000 Meters)DerateDerate 1% per 330 ft (100m) above 3300 ft. (1000 Meters)Control SpecificationsS20 CAS21 CAS22 CAS23 CAS25 CAControl Method2 SCRs in inverse parallel for full wave Voltage ControlRamp TimeAdjustable 2 - 30 SecondsInitial Torque T1 & T2 Adjustable 0 - 100% of Input VoltageControl PowerRequires 115 or 230 VAC 10%; 6 VASCR SpecificationsS20 CAS21 CAS22 CAS23 CAS25 CAPeak Inverse Voltage1200 VACHeat Watts per running AmpProtectionRC SnubberAmbient SpecificationsS20 CAS21 CAS22 CAS23 CAS25 CAOperatingEnclosed 32 to 113 'F (0-45 C); Open 32 to 122 'F (0-50 C)CoolingConvectionDerateDerate per degree C ( 'F) above 115 'F (45 C)Notes: UL listed and CSA certification pending NEMA and NEC do not list motors this large.

5 The S25CA is rated to 110 amps at full Information 1 3MN834 Figure 1-1 Mounting Dimensions 1 4 General InformationMN834 Replacement SCRAMPSizeCatalog Number70 SCR0036121 SCR0005242 SCR0015403 SCR00251105 SCR0115 Replacement FanAMPSizeCatalog Number1105 FAN0005 Enclosures and VentilationThe Single Phase Starter is available in open form chassis mount or in several standardNEMA type enclosures. The control will generate approximately watts of heat perampere of full load current during operation. All factory supplied enclosures aredesigned to dissipate this heat under maximum specified operating conditions.

6 If theSingle Phase Starter is mounted in an enclosure not supplied by the factory, thisgenerated heat must be taken into FormSingle Phase Starter supplied as a chassis mounted component. The installer shouldprovide a suitable electrical enclosure and give consideration to the heat generated bythe Type 1 Intended for indoor use primarily to provide a degree of protection against falling rain andsleet. Remains undamaged by the formation of ice on the Type 3 RIntended for outdoor use primarily to provide a degree of protection against falling rainand sleet. Remains undamaged by the formation of ice on the a period of two (2) years from date of original purchase baldor will repair orreplace without charge controls which our examination proves to be defective in materialor workmanship.

7 This warranty is valid if the unit has not been tampered with byunauthorized persons, misused, abused, or improperly installed and has been used inaccordance with the instructions and/or ratings supplied. The warranty does not covershort circuited output or shorted SCRs or other warranty or guarantee expressed orimplied. baldor shall not be held responsible for any expense (including installationand removal), inconvenience, or consequential damage, including injury to any person orproperty caused by items of our manufacture or sale. (Some states do not allow theexclusion or limitation of incidental or consequential damages, so the above exclusionmay not apply.)

8 In any event, baldor s total liability, under all circumstances, shall notexceed the full purchase price of the control. Claims for purchase price refunds, repairs,or replacements must be referred to baldor with all pertinent data as to the defect, thedate purchased, the task performed by the control, and the problem encountered. Goodsmay be returned only with written notification including a baldor Return AuthorizationNumber and any return shipments must be Information 1 5MN834 Safety NoticePrecautions WARNING:Do not touch any circuit board, power device or electricalconnection before you first ensure that power has beendisconnected and there is no high voltage present from thisequipment or other equipment to which it is connected.

9 Electricalshock can cause serious or fatal injury. WARNING:Be sure that you are completely familiar with the safe operation ofthis equipment. This equipment may be connected to othermachines that have rotating parts or parts that are controlled bythis equipment. Improper use can cause serious or fatal injury. WARNING:Be sure all wiring complies with the National Electrical Code andall regional and local codes or CE Compliance. Improper wiringmay cause a hazardous condition. WARNING:Be sure the system is properly grounded before applying not apply AC power before you ensure that grounds areconnected.

10 Electrical shock can cause serious or fatal injury. WARNING:Do not remove cover for at least five (5) minutes after AC power isdisconnected to allow capacitors to discharge. Electrical shockcan cause serious or fatal injury. WARNING:Improper operation may cause violent motion of the motor anddriven equipment. Be certain that unexpected movement will notcause injury to personnel or damage to equipment. WARNING: motor circuit may have high voltage present whenever AC poweris applied, even when motor is not moving. Electrical shock cancause serious or fatal injury. WARNING:If a motor is driven mechanically, it may generate hazardousvoltages that are conducted to its power input terminals.