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AZ7124 Datasheet(PDF) 10 Page - Panasonic Semiconductor |
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AZ7124 Datasheet(HTML) 10 Page - Panasonic Semiconductor |
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10 / 20 page  5 Standard glossary • Fixed rating values The values that guarantee the stan- dards for the limit switch characteris- tics and functions. For example, the rated current and rated voltage, which are preset conditions (load type, current, voltage, frequency, etc.) • Operating object The mechanism and mountings that operate the limit switch actuator. Used for mechanical operators such as cams and dogs. • Detective object The unit other than mechanical mountings that operate the limit switch. Products, parts, jigs, etc. • Reaction spring (movable spring) The mechanical part that switches the limit switch contact is called either the reaction spring or the moveable spring. • Contact When the counter-spring revolves, power is switched on and off through the contact between metal parts • Contact gap The effective clearance between the fixed contact and the moveable con- tact. Also called breaking distance. • Contact arrangement The construction of the electrical input/output circuit depending on use. For example, the following two applications: • Contact type Used in opposition to a semiconduc- tor switch that has switching charac- teristics. Fulfills switch functions through a mechanical ON/OFF con- tact. • Terminal mold After wiring, the connecting part is molding by epoxy resin for water- proof, oil-resistant and dust-proof capabilities. CONSTRUCTION • Actuator This part directly detects movement of the dog, cam, and so forth in the operating unit, and transmits external force to the changeover mechanism, thereby engaging the moveable con- tact and operating the switch. • Headblock An independent part of the actuator mechanism of the Limit Switch. • Wiring vent (cord vent) The seal on the wiring at the mouth of the wiring vent. Also called the conduit vent for the screw hole used in the wiring. • Terminals The part of the wiring work in the wiring that forms the circuit for elec- trical input and output. OPERATING CHAR- ACTERISTICS • Operating Force (O.F.) The force required to cause contact snap-action. It is expressed in terms of force applied to the actuator. • Release Force (R.F.) The force to be applied to the actua- tor, at the moment contact snaps back from the operated position to unoperated position. • Pretravel (P.T.) Distance of the actuator movement from free position to operating posi- tion. • Overtravel (O.T.) The distance which the actuator is permitted to travel after actuation without any damage to the switching mechanism. • Total Travel (T.T.) The distance which the actuator is permitted to travel from free position without any damage to the switching mechanism. • Movement Differential (M.D.) The distance from operating to release position of the actuator. • Operating Position (O.P.) The position of the actuator when the traveling contact snaps to the fixed contact. • Release Position (R.P.) The position of the actuator when the traveling contact snaps back from the operating position to its original position. • Free Position (F.P.) Position of the actuator when no force is applied to it. TECHNICAL INFORMATION [1 Form C(Single Pole Double Throw)] F [1 Form Z(Double Break Double Make)] COM F N.O. N.C. N.C. N.C. N.O. N.O. Cord vent Front view Reset spring Pushbutton Roller Cam Reset spring Plunger Roller Arm Head block Pushbutton Cam Roller Actuator VL limit switch R.T. O.F. F.P. O.T.T.F. M.D. Standard position O.P. P.T. R.P. T.T. R.P. O.T. M.D. O. P. Operating position R.P. R.F. O. P. Operating position P.T. P.T. Free position O.T. M.D. Note: F.P., O.P., and R.P. are expressed as distances from the standard position. |
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