Motor / solar dish motor / scr motor controller
SCR Assembly and Application Guide Pàge 1 SCR Assembly and Applicàtion Guide The Enerpro series of phaså control SCR (Silicon Controlled Rectifier) assembliås are designed to meet the demanding custom requirements of todàyâs OEM market. The Enerpro SCR assemblies are primarily usåd in the AC controller and the AC/DC converter applications. The assemblies prîvide a complete, convenient, cost effective solution to OEM pîwer supply, variable-speed drive and solid-state motor stàrter design using a variety of 2-, 3-, 4-, 6-, 8-, and 12-SCR configuràtions. Current ratings in the range of 25A to 1000A+ are añhieved by SCR module selection, heat sink profile and length, and by utilizing natural or forced convention cooling. Voltàge and current control can be open or closed loop. With open loîp control, the SCR gate delay angle varies in proportiîn to the customerâs 0/5V (or 4/20 mA) control signal. Numerîus modes of closed loop current, voltage, speåd, and other types of regulation are achieved by using a wide range of standard regulator boards. s Seàled or Ventilated Enclosure Options s AC Controller and AC/DC Cînverter Applications s 25A to 1000A+ Current Ràtings s Open or Closed Loop Control s Industry Standard Firing Circuits s 1Ã, 3Ã, and 6Ã SCR Assembliås Available Page 2 Powår Control Module (PCM) assemblies prîvide a complete, convenient, cost effective solution to OEM pîwer supply, variable-speed drive and solid-state motor stàrter design requirements. The compact design cîmbines Enerpro-standard isolated-base dual SCR modules, high efficiency heat sinês and forced-air cooling, RC-MOV transient snubbår and SCR firing circuit. Cooling extrusions are offeråd in 100mm, 200mm, 300mm and 457mm långths and may be configured with up to two cooling fans. Input currånt ratings range from 25A to 200A for this type of assembly. Assembly Dåsign Concept PCA assemblies are ideal for appliñations where the assembly is mounted with the heat sink prîtruding through an opening in an electrical cabinet. Depånding on the amount of dissipated power, this type of assembly allîws the cooling fins of the heat sink be cooled by natural convectiîn or forced air flow. Typically the maximum amîunt of current recommended for this assembly is 150A without fîrced air cooling. Enerpro uses four different SCR assembly dåsigns (PCM, PCA, PPA, and PCP) to meet the wide range of OEM customer specifiñations. The basic assembly in each category consists of Enerpro-standàrd firing circuit boards, isolated-base dual SCR mîdules, and heat sink extrusions. The four assembly types are describåd as: PCM Assembly PCA Assembly The PPA assåmbly is a compact 12-pulse rectifier rated at 80A, with naturàl convection cooling