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Limit Switches General Catalogue 2005

Limit Switches General Catalogue 2005
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Limit Switches General Catalogue 2005 - 1

General Catalogue 2005 Limit Switches 12/2005

Limit Switches General Catalogue 2005 - 5

3 Compact vertical type Limit Switches VL mini Limit Switches Uses Au-clad contact that can handle low-level loads with little chattering and bouncing. The series includes with LED lamp, with neon lamp, and touch switch. DL mini Limit Switches The contact can be forced open due to the forced contact opening mechanism, even in the unlikely event of a welded contact. Awarded the 1989 prize. Conforms to DIN standards. IP64 IP67 Vertical type Limit Switches A standards approved limit switch (standard model.) The type with lamp comes as both AC type (neon lamp) and DC type (LED lamp.) IP67...

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Limit Switches General Catalogue 2005 - 6

4 Hinge lever Roller lever One-way roller lever Short Long AZH20 22 Classification Compact size Product name HL (AZH) Limit Switches (die cast case) HL (AZH) Limit Switches (die cast case) HL (AZH) Limit Switches (plastic case) ML Mini Limit Switches (standard) Dust-proof type IP60 IP64 IP65 IP67 – Abrasion-proof type Surge-proof type Corrosion-proof type Oil-resistant type Neon LED Life Mechanical (Min. ope.) Operating force (max.) (hinge lever type) Available actuators Terminals Wiring Mounting pitch (Applicable screw) Available standards Page Electrical Ratings (load resistance)...

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Limit Switches General Catalogue 2005 - 7

Highly Reliable DIN SIZE Limit Switches – – – – – 107 50 CE 60 30.2 mm 1.189 2.311inch (M5 screws) Cabtire cable (wiring type) Screw terminal 26.67N {2.720gf}, 8.83N {900gf}, 1.39N {142gf}, 2.39N {244gf} 5x105 • 6 available actuator types; Flexible design allows rotary type to be locked in any position through 360deg., actuator head to be moved to any of four directions, and roller lever to be faced in or out. • Rugged aluminium die cast housing rated IP65; Conforms to DIN size standards 43694 & 40430 for mounting distance and dimensions. • Output contact (1 Form Z) rating 10 amps resistive...

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Limit Switches General Catalogue 2005 - 8

6 Type Classification Push plunger type Small Medium Large Excellent Excellent High-level accuracy gives firm detection for position fixing, etc., by using perpendicular movement. Roller plunger type (includes cross roller plunger) Small Medium Large Excellent Excellent Operating range can be widened by mounting accessory actuators like cams, dogs, cylinders, etc. High-level detection for position fixing. Roller arm type Small to large Large Medium Good to excellent Excellent The stroke in the direction of revolution is large at between 45° and 90° and the lever angle can be set at will to...

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Limit Switches General Catalogue 2005 - 9

7 Standard glossary • Fixed rating values The values that guarantee the standards for the limit switch characteristics 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...

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Limit Switches General Catalogue 2005 - 10

8 TECHNICAL INFORMATION • EN60947-5-1 EN standard same as IEC947-5-1 • Utilization categories The following examples express the classification of switches by category of use. • Rated impulse withstand voltage (Uimp) The peak impulse current value which enables the switch to resist without insulation breakdown. • Rated enclosed thermal current (Ithe) The current value that enables current to flow without exceeding the specified maximum temperature in the recharging contact switch. If the pins are made of brass, the maximum temperature limit is 65°C 149°F. • Conditional short circuit current...

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Limit Switches General Catalogue 2005 - 11

9 No damage incurred when sprayed with a jet of water for 3 minutes from all directions, as per the diagram on the left. Level Protection level Protection level and test methods Level Protection level Protection level and test methods Protective construction Expresses the degree of protective construction that guards the level of functionability of the switch against ingress of solid objects, water, and oil. The standards are IEC529 (IEC: International Electrotechnical Commission) standards. IEC standards determine the level of protection against both water and solid objects, but not...

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Limit Switches General Catalogue 2005 - 12

10 á Vmax (m/s) CAUTIONS FOR USE Pay attention to the following points when designing the dog for limit switch operation. 1) Make the dog faceplate as smooth as possible. 2) Adjust both the dog angle and the set arm angle as below, depending on the operating speed. 3) The depth (h) of the dog effects the lifespan of the limit switch. Therefore, set the depth to a maximum of 80% of the Total Travel (T.T.) 4) The relationship between the speed of the dog (V = m/s) and the tip angle (á) is as follows: 1. V&0.2m/s 2. V&0.5m/s Because the arm jiggle is as a minimum at a comparative speed such as...

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Limit Switches General Catalogue 2005 - 13

11 CAUTIONS FOR USE 1) Do not attempt to physically alter any part of the switch itself, such as the actuator, or switch attachment vent, as this may cause alterations to both characteristics and performance, and damage the insulation. 2) Do not pour any lubricants such as oil or grease onto the moving parts of the actuator, as there is a possibility that this will cause a malfunction due to seepage into the inside, and impair the motion. Silicon-based grease in particular affects the contact points badly. 3) If the switches are not to be used for an extended period of time, their contact...

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Limit Switches General Catalogue 2005 - 14

12 Poor design Improved design Explanation r IMPROVEMENT EXAMPLES Problem • Dog adjustment is difficult. Solution • Separate each one until the dog can be adjusted. Problem • The dog axis is too long, and slips out during operation. • For this reason, the limit switch operating position slips. Solution • Firmly fix the dog plate to the base. r Problem • The detector sinks, applying force to the limit switch. • The limit switch O.T. cannot be set. Solution • Relieve the pressure using an additional actuator, and the O.T. can also be set. r Problem • The area around the actuator coil is...

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