FRS300 Firing/Regulator/Snubber Board

Three-Phase Semi Converter Board

The FRS300 firing/regulator/snubber board is specifically designed for three-phase semiconverter applications. It includes our ASIC-based firing circuit, a current and voltage regulator, and a snubber circuit integrated on a single board. This provides a complete, compact and economical package for battery chargers, welding equipment, and DC bus generation where power quality is not an issue.

Key Features

  • Economical one-board solution
  • Built-in voltage and current regulation
  • Configured for three-phase SCR/diode semiconverters
  • Analog Delay Angle Command Signal (SIG HI)
  • Soft-Start and Soft-Stop
  • Phase Loss Inhibit
  • Instant Enable and Inhibit
  • Snubber Circuit
  • High Current Picket Fence Gate Drive
  • Analog Delay Determinator Circuit
  • Control Power Options: powered from an external 30 VDC or 24 Vac source.
  • Assembled in the USA

Applications

  • DC Bus Capacitor Chargers
  • Battery Chargers
  • Corrosion-Protecting Semi-converters

 

Technical Details

The FRS300  includes the following features:

  • Analog Delay Angle Command Signal (SIG HI): Users may choose a variety of DC control signal ranges including 0-5 V, 0-10 V, 4-20 mA, or custom ranges.
  • Soft-Start and Soft-Stop: Upon soft-start, SCR firing is enabled and the delay angle command ramps from the maximum value to the setpoint value determined by the SIG HI command signal. Upon soft-stop, the delay angle ramps from the setpoint value to the maximum value after which SCR firing is inhibited.
  • Phase Loss Inhibit: A phase loss circuit instantly inhibits SCR firing if a loss of one or more phases or gross phase imbalance is sensed on the AC line. Firing will soft-start when such a fault is cleared.
  • Instant Enable and Inhibit: A contact closure (relay, switch, transistor) instantly enables or inhibits SCR firing at the delay angle commanded by the delay angle command signal (SIG HI).
  • Regulator Circuit: The board typically operates in voltage or current regulation mode, depending upon which error signal is larger. This allows a seamless transition from voltage to current regulation or vice-versa.
  • Snubber Circuit: The snubber section consists of three RC circuits connected to the SCR anodes and cathodes.
  • High Current Picket Fence Gate Drive: The transformer-isolated gate drive circuits provide a hard firing initial 13 V open circuit/1.3 A short circuit firing pulse followed by sustaining “back porch” pulses at 6 V open circuit/0.5 A short circuit. The gate pulse burst frequency is 384 times the mains voltage frequency.
  • Analog Delay Determinator Circuit: Enerpro’s gate delay determinator circuit is based on the Ainsworth three-phase PLL circuit and implemented with a proprietary ASIC. This circuit adjusts the gate delay firing angle in negative proportion to the SIG HI command. Gate drive phase balance is typically less than ±1°.
  • Control Power Options: The FRS300 is powered from an external 30 VDC or 24 Vac source.
  • Board Construction: All circuit boards are assembled at the Enerpro plant in Goleta, California and are manufactured by a UL-approved fabricator from 2.4 mm thick FR4 fire resistant fiberglass epoxy laminate. All boards are conformal coated (MIL-1-46058, Type UR)
Configure Your Board




    Company

    FRS300 3-Phase Half-Controlled Rectifier Regulator, and Snubber Board: Configuration

    Snubber Circuit:

    1 = Omit
    2 = Install

    Regulation:

    1 = Open Loop
    2 = Voltage Regulation with Current Limit
    3 = Voltage Regulation Only
    4 = Current Limit Only

    J1 & J2 Header Type:

    0 = Horizontal
    1 = Vertical

    CT Ratio:

    XX = 1.0 A maximum CT current
    10
    100/1
    Other - please specify
    XX10100/1Other

    Command Signal:

    1 = 0 - 5 V
    2 = 0 - 10 V
    3 = 4 - 20mA
    Other - please specify
    123Other

    SCR Mains Voltage:

    05 = 50 V
    10 = 100 V
    12 = 120 V
    38 = 380 V
    40 = 400 V
    48 = 480 V
    Other - please specify
    051012384048Other

    Mains Frequency:

    50 = 50 Hz
    60 = 60 Hz
    5/6 = 50 or 60 Hz
    400 = 400 Hz
    Other - please specify
    50605/6400Other

    Rectifier Filter:

    1= None
    2= Capacitor
    3= Inductor

    Special Requirements:

    UNITED STATES

    Enerpro, Inc.
    Global Headquarters
    99 Aero Camino
    Goleta, CA 93117

    info@enerpro-inc.com
    https://www.enerpro-inc.com

    Tel: (805) 683-2114
    Fax: (805) 964-0798

    CANADA

    ICT Power Company Inc.
    1220 Corporate Dr.
    Burlington, ON L7L 5R6
    Canada

    sales@ictpower.com
    http://www.ictpower.com

    Tel: 905.631.8494
    Fax: 905.631.8495

    SCANDINAVIA

    MPE Cathodic AS
    P. O. Box 74
    N1581 Rygge, Norway
    Marine & Offshore
    Jotun ICCP Specialists

    emil@mpecathodic.no
    roy@mpecathodic.no
    http://www.mpecathodic.no
    Tel: +47 69 23 29 00
    Fax: +47 69 23 29 01
    Mob: +47 95 11 81 82

    UNITED KINGDOM

    Andrew Chettle
    Power Products International Limited
    Commerce Way
    Edenbridge
    Kent TN8 6ED

    sales@ppi-uk.com
    http://www.ppi-uk.com
    Tel: 01732 866424
    Fax: 01732 866399

    ITALY, SLOVENIA, SLOVAKIA, CZECH REPUBLIC

    Bruno Passerini
    G.P.S. – Green Power Solutions SRL
    Via Venezia 34D
    10088 Volpiano – Torino
    Italy

    info@gpsemi.it
    http://www.gpsemi.it
    Tel: +39 011 9882251
    Fax: +39 011 9881358

    TECHNICAL SUPPORT

    Design Support
    In-Service Support
    Toll Free: (877) 648-2114
    (805) 683-2114
    support@enerpro-inc.com

    Sales Policy
    RMA Policy

    HONG KONG, MACAU, CHINA (PRC)

    Jane Lu
    Tackoh Enterprises (HK)
    Room 1604, Arion Commercial Centre
    2-12 Queen’s Road, West
    Hong Kong

    janelu2000@yahoo.com
    http://www.shjdn.com
    Tel: 852 2543 0186
    Fax: 852 2542 2114
    Mob: 852 9379 8172

    SOUTH AMERICA

    Andes Controls, Power and Automation
    Cristián Ladisla Bohn
    Av. Holanda 099, Oficina 1101
    Providencia, Santiago, Chile

    contact@andescpa.com
    http://andescpa.com/
    Tel: +56 2 2306 6202

    THAILAND, MALAYSIA, VIETNAM, PHILIPPINES

    Akom Chantakhun
    CBC International Limited
    56/12-13 Soi Prayasuren 45
    Samwatawantok, Klongsamwa
    Bangkok, 10510
    Thailand

    akom@cbcinter.co.th
    http://www.cbcinter.com
    http://www.cbcinter.co.th
    Tel: 662 902 6106-9
    Fax: 662 914-3009