Sequence Control Circuit #3
A third circuit that is almost identical to the previous circuit is shown in Figure 31 – 3. This circuit also employs the use of normally open auxiliary contacts to prevent motor #2 from starting before motor #1, and motor #3 cannot start before motor #2. These normally open auxiliary contacts that control the starting sequence are often called permissive contacts because they permit some action to take place. The main difference between the two circuits is that in the circuit shown in Figure 31 – 2, the stop push button interrupts the power to all the motor starters. The circuit in Figure 31 – 3 depends on the normally open auxiliary contacts reopening to stop motors #2 and #3.
Related posts:
TESTING SOLID-STATE COMPONENTS
Single-phase motors:Compensated Repulsion Motor
Capacitance:rc time constants
Fuel System – Carburetor Service (part3)
Engine Valve System part3
Fixed Appliance and Socket Circuits:Testing Socket Circuits
The Essentials of Computer Organization and Architecture - Input/Output and Storage Systems
AUDIO AND VIDEO SYSTEMS - THEATRE SOUND SYSTEM
Servicing methods without a schematic part4
Computations and circle diagrams:Starting of Slip-ring Motors
Three-phase Distribution Boards And Socket Circuits:Industrial Plugs and Sockets
Audio Principles:The Sine Wave
Lamps and Light Fittings:Master Switching
The Diac
Incoming search terms:
- what is contro sequence control equpment
- about electrical sequential starting of equipments
- sequees contor enqupiment
- sequence control circuits 36A9Y6M
- Some circuits employ the use of normally open auxiliary contacts to prevent motor 2 from starting before motor 1 and motor 3 cannot start before motor2 These normally open auxiliary contacts that control the starting sequence are often called ____ contact