The contactor has 3 main no contacts known as l1 l2 and l3. I am facing problem of operation of dol starter 3 phase 3 hp motor through plc.
Dol Starter Direct Online Starter Diagram Amp Working
Dol wiring diagram three phase. Dol starter connection dol starter control. And if you want to learn it in image type diagram. Please see the attached diagram for guidance. A 8 pin timer are used. Dol starter control diagram three phase. What is dol starter.
Dol starter motor connection dol. In control wiring diagram all magnetic contactors coils are rated 220 vac. In the above 3 phase dol starter wiring diagram all connection shown. Overloadindicator and power wiring diagram. The r y and b phase are connected through mccb to the contactors. In the below diagram the mccb is not shown the three phase supply comes from mccb circuit breaker.
A dol starter or direct on line starter or across the line starter is a method of starting of a 3 phase induction motorin dol starter an induction motor is connected directly across its 3 phase supply and the dol starter applies the full line voltage to the motor terminals. In the below dol starter wiring diagram i shown a molded case circuit breaker a magnetic contactor normally open push button normally close push button switch thermal overload relay motor trip indicator and 3 phase motor. Direct online starter animation diagram forward reverse 3 phase motor wiring starter diagram 8 pin on delay wiring diagram three phase failure wiring and installation diagram. This is the wiring diagram of a dol starter. Wiring of the direct on line dol motor starter 1 three phase supply 230volt coil see wiring diagram. Three phase dol starter wiring diagram.
I have 24vdc coil 5 amp resistive load on 8 qty connected to my plc card this is smoke extraction system and there are five zone with five different plc installed each zone has eight 3hp fans working in primary and secondary configuration. The wiring of direct on line control circuit starter is following. 1 the following links are pre fitted to the starter. All other control and power connections have to be made by the installer. 13 17 with a flying lead to be connected to overload terminal 95. The contactor has 3 types of contacts.
The on delay timer diagram is also shown in the diagram. A2 14 18. The l1 contactor is connected from normally open no to r phase using mccb. The connection of contactor can be done among relay coil supply voltage as well as thermal overload. Mccb or circuit breaker. This diagram illustrates possible wiring using a tesys d lc1d contactor and tesys lrd overload lrd and stop control is assumed to be by operation of the stop button on the overload.
Despite this direct connection no harm is done to the motor. Why a three phase induction motor is self starting. In the above three phase dol starter wiring diagram. All connection i shown with complete guide. In which the three phase induction motor connection shown and all the direct online starter wiring shown with simple steps. The diagram below shows the wiring for a single phase motor and the path through the contactor and overload.
Gallery of Dol Wiring Diagram Three Phase
