Side-by-side reference

Understand the difference.

Compare the meaning, drawing context and source references of two entries. A similar graphic or shared abbreviation does not establish equivalence.

First referenceCompare with

LS ROLLER

IEEE / ANSI

ANSI/IEEE roller-operated limit switch symbol

The roller limit-switch form identifies a mechanical roller actuator associated with the contact function. The electrical drawing records the signal path; the equipment detail determines the actual motion, roller location and allowable travel.

Drawing use: Schematic
Application: Control circuits
Reference family: IEEE / ANSI / Manufacturer
Form evidence: Autodesk IEEE-oriented Limit Switches functional form. Autodesk explicitly publishes this block under IEEE Symbol Preview. The counterpart is the matching functional concept; no equivalence of every detailed standard graphic is asserted.

A distinction that matters

A roller actuator is a mechanical input, not an inductive proximity sensing element.

Full reference

LS ROLLER

Symbols

Roller-operated limit switch

A roller-operated limit switch transfers equipment motion through a roller actuator to its electrical contacts. The schematic names the mechanism while the GA or mechanical detail determines the roller location.

Drawing use: Schematic
Application: Control circuits
Reference family: IEC / Manufacturer

A distinction that matters

A roller mechanism is different from an electronic proximity sensor.

Full reference

Original educational previews. Follow the source references on each full entry for the appropriate standard or selected product.