86. Graphical symbols for sequence control

This is a list of the drawing symbols used in sequence diagrams. Please refer to this at the time of preparing sequence drawings.

(1) Contact function drawing symbols

Function Symbol Function Symbol

Contact function

Position switch function

Shutting off function

Delay function

Circuit opening function

Automatic recovery function

Function of switching ON and OFF the load

Automatic recovery function
(Residual) function

Automatic detaching function

(2)Operation mechanism drawing symbols

Function Symbol Function Symbol

Manual operation (general)

Operation using a detachable handle

Pulling operation

Operations using a key

Twisting operation

Cranking operation

Pressing operation

Cam operation

Proximity operation

Motor operation

Emergency operation

Compressed air operation or water pressure operation

Handle operation

Operation using an electromagnetic effect
Or, actuating device

Foot pressing operation

Lever operation

Operations using other methods

(2)Operation mechanism drawing symbols

Contact type Make contact symbol Break contact symbol

Manual operation automatic recovery
Contact (pressing type)

Non-automatic recovery contact

Limit switch contacts

Solenoid relay contact

Electromagnetic contactor contact

Limit operation contact

Recovery contact during a limit