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  over current alarm Cause : Output current has exceeded internal fault limit. 1. Check motor load. 2. Check acceleration times in parameter Check motor and motor cable (including phasing and delta/star connection). Check that the start-up data in parameter Check that there are no power factor correction capacitors or surge absorbersin motor cable Check encoder cable click here for more information click2electro Forum – Click2Electro

  brake chopper circuit A chopper is a device that converts fixed DC input to a variable DC output voltage directly. A braking chopper is an electrical switch that limits the DC bus voltage by switching the braking energy to a resistor where the braking energy is converted to heat. Braking choppers are automatically activated when the actual DC bus voltage exceeds a specified level depending on the nominal voltage of the variable-frequency drive. For more information Click here Brake chopper

 ABB ACS150 Drive VFD Manual Download PDF Click on link below for ABB ACS150 Manual  ABB ACS150 Drive Manual & Catalog Download - Click2Electro

  Difference between oil pressure switch and sensor  T he two parts are different in their operation but performs the same function. The oil pressure sender is a variable resistor sensor that will increase and decrease resistance as the oil pressure goes up and down. This sensor will control a gauge to go up and down with the pressure. The oil pressure switch will be a closed or open circuit. The switch depending on calibration will close a circuit turning on the oil light on the dash when the oil pressure gets below a set amount or causing a gauge to go to a set reading when you have pressure and drop to nothing if it falls below set limit.

 What is fuse ?  Fuse is electrical safety device protect electrical circuit or devices from "overcurrent" , "Overload" &  "Short Circuit". Fuse is metal wire that melts & breaks the circuit when too much current flow throw it Once fuse operate it is an open circuit & must be replace or rewired depending on fuse. * Member of circuit breaker family. * Sacrificial device.