Motor Control Ch. 4 and 5

Motor Control Ch. 4

Solenoids

• Frame

• Iron Core or Armature

• Coil of Wire

Solenoid Applications

• Door Locks

• Safety applications

• Water Pressure or Flow

• Air Pressure or Flow

• Medical Applications

Control Relays

• Electromagnetic switch that opens and closes sets of contacts

• Control power to Motor Starters, Heating elements, pilot lights, audible alarms

Contact Configurations

• Single Break

• Double Break

• SPST, SPDT, DPST

• Coils identified as CR1, CR2, CR3....

• Contacts are identified as 1CR1, 2CR1...

General Purpose Relays

• Terminal Block

• Square base cube

• Tube base

• Number of pins

• Mounting type

Control Relay in Circuit

Control Relay in Circuit Multiple Contacts

Multiple Control Relays in a Circuit