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Panasonic Home Business > Industrial Devices > Automation Controls Top > Introduction to Automation Controls > Introduction to Connectors - Micro Switches



Snap-Action Switches

Technical terms for Pin Plunger (Actuator) position

① Free Position (FP)

State in which nothing touches the pin plunger

1.Free Position (FP) - Free position State in which no one touches the push button

② Operating Position (OP)

The position where the movable contact turns to the other side

2.Operating Position (OP)-Operating position The position where the movable contact turns around

③ Total Travel Position (TTP): Limit position of operation

State in which the pin plunger is pressed through to the end

3.Total Travel Position (TTP) - Total Travel Position (TTP)-Limit position of operation State in which the push button is pressed through to the end

④ Release Position (RP): Return position

The position where the movable contact returns to its original position

4.Release Position (RP)-Return position The position where the movable contact returns from the operating position to its original position

Summary

Summary

Technical terms for Pin Plunger (Actuator) movements

① Pre-Travel (PT): Movement up to operation

Moving distance from the Free Position to the Operating Position

1.Pre-Travel (PT) - Movement up to operation Moving distance from the Free Position to the Operating Position

② Over-Travel (OT): Movement after operation

Moving distance from the Operating Position to the Total Travel Position

2.Over-Travel (OT) - Movement after operation Moving distance from the Operating Position to the Total Travel Position

③ Total Travel (TT): Total movement

The sum of ①Pre-Travel and ②Over-Travel

3.Total Travel (TT) - Total movement The sum of (1) Pre-Travel and (2) Over-Travel

④ Movement Differential (MD)

Difference between the Operating Position and the Release Position

4.Movement Differential (MD) - Movement differential Difference between the Operating Position and the Release Position=Difference between the Operating position and the Return position

Summary

Summary

Technical terms for the force applied to the Pin Plunger (Actuator)

① Operating Force: Force that is necessary for operation

Force applied to the actuator (pin plunger) to move from the Free Position to the Operating Position

1.Operating Force - Force that is necessary for operation Force applied to the actuator (push button) to move from the Free Position to the Operating Position

② Total Travel Force (TF): Force that is necessary for total movement

Force applied to the actuator (pin plunger) to move from the Operating Position to the Total Travel Position

2.Total travel Force (TF) - Force that is necessary for total movement Force applied to the actuator (push button) to move from the Operating Position to the Total Travel Position

③ Release Force (RF): Return force

Force applied to the actuator (pin plunger) to move from the Total Travel Position to the Release Position

3.Release Force (RF) - Return force Force applied to the actuator (push button) to move from the Total Travel Position to the Release Position

Summary

Summary

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