bonitron M3575T Customer Reference Manual

bonitron M3575T Customer Reference Manual

Standard duty braking transistor
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Model M3575T
Standard Duty Braking Transistor
Customer Reference Manual
Web: www.bonitron.com
Tel: 615-244-2825
Email: info@bonitron.com

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Summary of Contents for bonitron M3575T

  • Page 1 Model M3575T Standard Duty Braking Transistor Customer Reference Manual ● ● Web: www.bonitron.com Tel: 615-244-2825 Email: info@bonitron.com...
  • Page 2 Bonitron has seen thousands of products engineered since 1962 and welcomes custom applications. With engineering, production, and testing all in the same facility, Bonitron is able to ensure its products are of the utmost quality and ready to be applied to your application.
  • Page 3 RIVE PTIONS In 1975, Bonitron began working with AC inverter drive specialists at synthetic fiber plants to develop speed control systems that could be interfaced with their plant process computers. Ever since, Bonitron has developed AC drive options that solve application issues associated with modern AC variable frequency drives and aid in reducing drive faults.
  • Page 4: Table Of Contents

    ESCRIPTION 2.1. Related Products ......................9 2.2. Part Number Breakdown ....................9 Figure 2-1: Example of M3575T Part Number Breakdown ............9 Table 2-1: AC Voltage Rating Codes ..................9 Table 2-2: Chassis Determination ................... 10 Table 2-3: Special Options ...................... 11 2.3.
  • Page 5 Table of Contents 5.3.10. Attached Drive Will Not Precharge ................24 5.4. Technical Help – Before you call ................24 6. E ....................25 NGINEERING 6.1. Ratings Charts ......................25 Table 6-1: Module Ratings ...................... 25 6.2. Watt Loss ........................26 Table 6-2: Watt Loss .......................
  • Page 6 M3575T This page is intentionally left blank.
  • Page 7: Introduction

    1.2. URPOSE AND COPE This manual is a user’s guide for the M3575T standard duty braking transistor. It will provide the user with the necessary information to successfully install, integrate, and use the M3575T. In the event of any conflict between this document and any publication and/or documentation related to the AC drive system, the latter shall have precedence.
  • Page 8: Symbol Conventions Used In This Manual And On Equipment

    M3575T 1.4. YMBOL ONVENTIONS SED IN THIS ANUAL AND ON QUIPMENT Earth Ground or Protective Earth AC Voltage DC Voltage Electrical Hazard - Identifies a statement that indicates a shock or electrocution hazard that must be avoided. DANGER! DANGER: Identifies information about practices or circumstances that can lead to personal injury or death, property damage, or economic loss.
  • Page 9: Roduct Escription

    ELATED RODUCTS The model M3575T series of braking products is designed to provide resistive braking control for applications utilizing a standard AC drive with a fixed DC bus. These modules have been designed for use with remotely mounted resistive loads such as the model M3575R or M3775RK resistive load modules.
  • Page 10 M3575T DC C URRENT ATING The DC current rating indicates the maximum DC current level safely handled by the braking unit. This rating is represented numerically such that a value of “15” would indicate that the braking unit has a peak current rating of 15 amps DC. The RMS current rating of the unit depends on the application of the braking module.
  • Page 11: General Specifications

    Control Power  320-800VDC required for 400VAC drives  450-800VDC required for 460VAC drives 15 – 600A Braking Current (Use Bonitron M3452 for applications requiring 600+ Amps) 375VDC (for 230VAC drives) Turn-on Voltage 620VDC (for 400VAC drives) 750VDC (for 460VAC drives)
  • Page 12: General Precautions And Safety Warnings

    M3575T 2.4. ENERAL RECAUTIONS AND AFETY ARNINGS  H I G H V O L T A G E S M A Y B E P R E S E N T  N E V E R A T T E M P T T O...
  • Page 13: Installation Instructions

    NSTALLATION FOR HASSIS The conduit cover is an optional cover for the M3575T with current ratings 15, 30, 60, and 75A. The conduit cover option is designated by C in the part number. See Section 6.4 for conduit cover dimensions.
  • Page 14: Wiring And Customer Connections

    IRING This section provides information pertaining to the field connection of the DC bus inputs to the M3575T and M3575R resistive braking modules. Actual connection points and terminal numbers for the AC drive module will be found in the documentation provided with the drive. Be sure to review all pertinent drive and system documentation as well as the power connection notes listed below before proceeding.
  • Page 15 User’s Manual Table 3-1: Power Wiring Specifications ODEL UMBER HASSIS ERMINAL ORQUE M3575T-L15 M3575T-L30 M3575T-L60 M3575T-E15 DC+, DC-, 0.4-0.6 Nm M3575T-E30 M3, M4 16 AWG 12 AWG RES+, RES- 3.5-5.3 lb-in M3575T-E75 M3575T-H15 M3575T-H30 M3575T-H75 M3575T-L125 M3575T-L150 M3575T-E125 DC+, DC-, 0.8-1.6 Nm...
  • Page 16: Control Interface Wiring

     The terminals marked X and Y are intended for connection of a DC link choke. If the Bonitron braking transistor is connected to the terminals marked X and Y in Figure 3-2, switching resonances caused by the DC link choke will destroy the braking transistor. If the Bonitron braking transistor is connected between X and Y, the drive will not operate.
  • Page 17: Typical Configurations

    User’s Manual 3.6. YPICAL ONFIGURATIONS Figure 3-2: Typical Power Interconnection Diagram...
  • Page 18 M3575T Figure 3-3: Customer Connections...
  • Page 19: Operation

    4.1. UNCTIONAL ESCRIPTION The M3575T module controls the bus voltage of a variable frequency drive by transferring energy to a resistor. When the drive’s DC bus voltage exceeds a fixed setpoint, the dynamic braking transistor module’s control electronics turns on an IGBT transistor connecting a resistive load across the DC bus.
  • Page 20: Pre-Power Checks

    No adjustments are necessary for this module. All regulation points are factory adjusted, and should not be changed in the field. If your module is not functioning properly, refer to troubleshooting in Section 5 of this manual or contact Bonitron for assistance.
  • Page 21: Maintenance And Troubleshooting

    ATTENTION! damage! Feel free to call Bonitron any time the equipment appears to be having problems. 5.3.1. BUS LIGHT NOT ILLUMINATED This can be a normal condition in systems where DC bus power and logic control power is applied.
  • Page 22: Blown Dc Bus Fuse

    This usually indicates serious problems exist and reenergizing the system can cause significant or catastrophic failure! In most cases, the module will need to be returned for repair. Contact Bonitron before changing the fuse. Possible causes for a blown fuse are: ...
  • Page 23: Control Ready Contacts Wont Close

    User’s Manual ’ 5.3.5. ONTROL EADY CONTACTS WON T CLOSE If the Status Contacts listed in Section 4.2.2.1 above will not close, this indicates one of the following conditions:  Open Load – There is no load connected to the unit, or it is connected improperly.
  • Page 24: Active Braking Light Stays On All The Time

    M3575T 5.3.9. CTIVE BRAKING LIGHT STAYS ON ALL THE TIME  System voltage is too high or high harmonic content is present. Check main system rectifier input AC voltage. Refer to the DC bus trigger level found in Table 2-1. The undistorted main system rectifier AC input voltage should always be less than DC bus trigger level / 1.414.
  • Page 25: Engineering Data

    User’s Manual NGINEERING 6.1. ATINGS HARTS Table 6-1: Module Ratings ODEL RIVE HASSIS RAKING  OLTAGE YCLE UMBER OWER M3575T-L15 3.87A 25.00Ω M3575T-L30 7.75A 15HP 12.50Ω M3575T-L60 15.5A 30HP 6.25Ω M3575T-L125 125A 32.27A 63HP 3.00Ω 230VAC M3575T-L150 150A 38.73A 75HP 2.50Ω...
  • Page 26: Watt Loss

    M3575T 6.2. Ratings assume losses during highest braking currents. Total heat produced will depend on the duty cycle of the braking function. Table 6-2: Watt Loss 230VAC ODEL ONTROL OWER EATSINK UMBER M3575T-L15 25 W 20 W M3575T-L30 25 W...
  • Page 27: Certifications

    In these cases, the following fuses are recommended. Breakers are not recommended for overcurrent protection. Table 6-3: Recommended Fuses 230VAC 400VAC 460VAC ODEL ODEL ODEL UMBER UMBER UMBER M3575T-L15 FWP-15 M3575T-E15 FWP-15 M3575T-H15 FWP-15 M3575T-L30 FWP-30 M3575T-E30 FWP-30 M3575T-H30 FWP-30 M3575T-L60...
  • Page 28 M3575T Table 6-4: Maximum Inductance for DC Link Cable AXIMUM ODEL MPERAGE NDUCTANCE 3575T-x15 15 A 1000uH 3575T-x30 30 A 650uH 3575T-x60 60 A 350uH 3575T-x75 75 A 350uH 3575T-x125 125 A 750uH 3575T-x150 150 A 750uH 3575T-x200 200 A...
  • Page 29: Dimensions And Mechanical Drawings

    User’s Manual 6.7. IMENSIONS AND ECHANICAL RAWINGS Figure 6-1: M3 Chassis Dimensional Outline Drawing 7.7" 195.58mm 12" 12.75" 304.8mm 323.85mm 3" 76.2mm...
  • Page 30 M3575T Figure 6-2: M4 Chassis Dimensional Outline Drawing 7.7" 195.58mm 12" 304.8mm 12.75" 323.85mm 1.75" 44.45mm 4" 101.6mm...
  • Page 31 User’s Manual Figure 6-3: B5 Chassis Dimensional Outline Drawing...
  • Page 32 M3575T Figure 6-4: B7 Chassis Dimensional Outline Drawing 7.75" 196.85mm 16.75" 425.45mm 17.75" 450.85mm 5" 127mm 7" 177.8mm...
  • Page 33 User’s Manual Figure 6-5: MTW 3575-CVR-30U Conduit Cover Dimensional Outline 1.15 1.57 2.60 Figure 6-6: MTW 3575-CVR-30 Conduit Cover Dimensional Outline 1.63 2.75 3.07...
  • Page 34: Block Diagram

    M3575T 6.8. LOCK IAGRAM Figure 6-7: Block Diagram...
  • Page 35: Appendix

    DC bus current. The braking current in the DC bus will be higher than the AC current absorbed from the load.  Because Bonitron braking transistor modules are rated for peak current, determine the peak braking power required. 7.1.1.1. ORSEPOWER TO...
  • Page 36: Status Contact Connection Notes

    OTES The model M3575R series of resistive load modules are available in a variety of load sizes and configurations for use with the M3575T braking transistor modules or with the drive’s integral braking control module. Contact your drive distributor for more information.
  • Page 37 The actual load module used may vary. Refer to the drive system documentation for details on the actual load module used. Please note that the status contact within the M3575T remains CLOSED until a fault condition occurs. Fault conditions include Open Load, Over Temperature, and Transistor Failure.
  • Page 38 M3575T Figure 7-1: Typical Status Contact Wiring with Input Contactor...
  • Page 39 User’s Manual Figure 7-2: Typical Status Contact Wiring with Drive Interlock Control...
  • Page 40: Common Bus Notes

    Some high power systems also include redundant or back up sections as well. Once power is applied, all Bonitron modules are designed to be connected to DC buses that have all the bus capacitors present.
  • Page 41 User’s Manual NOTES...
  • Page 42 M3575T This page is intentionally left blank.
  • Page 44 D_M3575T_CMAN_VALL_07j 09/27/2016 521 Fairground Court ● Nashville, TN 37211 ● USA Tel: (615) 244-2825 ● Fax: (615) 244-2833 ● Web: www.bonitron.com ● Email: info@bonitron.com...

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