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LJK-N Series Compact Plastic Limit Switch with Positive Opening Mechanism

LJK-N Series Compact Plastic Limit Switch with Positive Opening Mechanism
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LJK-N Series Compact Plastic Limit Switch with Positive Opening Mechanism - 1

Compact plastic limit switches with positive opening mechanism ® @ C€ (?) Positive opening mechanism meets standards worldwide. A wide variety of IThe LJK-N conforms to I EC standards, and is facilities to be exported anywhere in the world, use the LJK-N with confidence. I Positive opening mechanism©forces contacts open.* •Can prevent problems caused by contact fusing. •Can be used also as a safety limit switch. IWide variety, with 33 catalog listings in the lineup •Contact configuration Slow action: N.C. x + N.O. x 1 (BBM: break before make), N.C. x 2 "Except for the steel wire and spring rod types.

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LJK-N Series Compact Plastic Limit Switch with Positive Opening Mechanism - 2

•Snap-action type The slow action internal switch has N.C./N.O. electrically independent contacts (form Zb). The positive opening mechanism forces the contacts open (N.C. contacts only) even if they are fused. As seen above, the cam forces the N.C. contact up from the bottom, even if there is fusing of the contacts. Note: Steel wire and spring rod types do not have positive opening mechanism. •Table 1. Electrical rating Utilization categories AC-15: solenoid load Ue: rated operating voltage le: rated operating current •Table 2. Max. operating speed and min. operating speed - Contact...

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LJK-N Series Compact Plastic Limit Switch with Positive Opening Mechanism - 3

OPERATING CHARACTERISTICS BY ROTARY OR IN-LINE ACTUATIONS OF ACTUATORS O.F.: max. operating force needed for N.C. operation PO PT2 PT2 PT1 MD PT2 PT 1 TT TT PO PO MD TT •Non-directional operation type PT2 •Plunger type and one-way roller type Free position PT1 •Roller lever type P.O.F: min. force for positive opening MD PT2 PT1 MD P T1 MD T.T.: total travel. P.T.1: pretravel for N.C. operation. P.T.2: pretravel for N.O. operation. M.D.: minimum movement differential. P.O.: minimum travel to positive opening position. SHAPE / DIMENSIONS / OPERATING CHARACTERISTICS / CIRCUIT DIAGRAMS Resin...

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LJK-N Series Compact Plastic Limit Switch with Positive Opening Mechanism - 8

Steel wire: LJK-N2106F12, LJK-N2506F12, LJK-N2706F12 (unit: mm) Note: Steel wire switches do not have positive opening mechanism. Operating characteristics LJK-N2106F12 LJK-N2506F12 LJK-N2706F12 by wire inclination angle O.F. (max. operating force needed for N.C. operation) 0.13N·m 0.13N·m 0.13N·m P.O. (min. travel to positive opening position) – – – P.O.F. (minimum force for positive opening) – – – (25°) (28°) (27°) PT1 (pretravel for N.C. operation) (40°) PT2 (pretravel for N.O. operation) – – (15°) MD – – TT (total travel) – – – 196.5 142 1.2 dia. . R2 15 Catalog listing ) (2 Operating...

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LJK-N Series Compact Plastic Limit Switch with Positive Opening Mechanism - 9

• Always tighten each part of the safety switch to the tightening torque recommended in the product specifications. If any part is tightened excessively, the screw and/or other parts may be • Mount the dog so that no force is directly applied to the actuator in • Do not use any glue or lubricant containing silicone. Doing so might result in faulty electrical conductivity. • Do not perform wiring work with the power turned ON. Doing so might cause an electrical shock or cause the device to operate • Do not apply excessive force (force 5 times larger that the O.F.) to the actuator when it is...

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