Untitled Document

DESIGN	Our Designs, parts & Dimensions are as per I.S.I Standards. Latest Innovations are incorporated. Changes are made with times and also as per Customer demands.
CONTROLLER MODULE	This is a rectifier bridge of suitable configuraton and a dimmerstat for varying the voltage of motor and hence controlling speed. The system incorporates all the necessary functional blocks such as power supply, dimmerstat with appropriate cooling arrangement, contactors and field failure relay. Dimmerstat can be Motorised or non-motorised.
RECTIFIER BLOCK.	This block consists of suitably rated diodes mounted on properly selected heatsinks. Two sets of such blocks are provided one of field and other for armature. While designing, due consideration has been given to the starting torque, ambient temperature and the atmosphere in which the drive is to be operated. The starting torque requirement from 1.6 to 2.5 times can be met.
ELECTRICAL BLOCK.	This meets the electrical and functional requirements of the drive and comprises switchgears like input switch or circuit breakers. output contactors, indicating meters, push buttons and contactors/relay logics. Meters to indicate the DC voltage, DC current and motor rpm and lamps for mains ON and motor ON are provided on the front panel. Additional meters can be provided on request.
CONSTRUCTION	The panels are free standing, floor mounted types with or without the cooling fan depending on the rating of the drive. Dimmerstats are chosen with appropriate cooling arrangements. Almost all components are accessible through the front door. The layout is such that the rectifier module can be serviced easily. Enclosures are available in IP 22, IP 41 and IP 51 types. All cables are colour-coded and ferruled and components labelled for identification.
SALIENT FEATURES	Acceleration / Deceleration Control. No problems of harmonics & ripples. Provision for armature feedback or tacho- feedback for better speed regulation. Smooth, solid state current limit adjustment. Sufficient number of test points for easier testing and maintainence.
OPTIONAL FEATURES	(Against specific orders) Dynamic braking for quick stoppage. Pendant control for remote operation Inching. Tachogenerator feedback for better speed regulation.