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VB-3241 Datasheet(PDF) 4 Page - Omron Electronics LLC |
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VB-3241 Datasheet(HTML) 4 Page - Omron Electronics LLC |
4 / 5 page VB 4 Safety Precautions Refer to Safety Precautions for All Limit Switches. Connection • Be sure to connect a fuse with a breaking current 1.5 to 2 times larger than the rated current to the Switch in series in order to protect the Switch from damage due to short-circuiting. • If the VB is used for EN ratings, use a gI or gG 10-A fuse approved by IEC269. Operation Make sure the notch of the plunger is not pressed into the scraper when operating the VB Multiple Limit Switch, otherwise chips or dust may penetrate into the VB Multiple Limit Switch. Sealing • The switch box and cover are made of die-cast aluminum and the mounting part of the Switch is covered with a seal cap, and ensure a sealing performance of more than 98 ×103 Pa for the VB Multiple Limit Switch. The filter on the side of the head prevents oil and water from penetrating into the interior of the VB Multiple Limit Switch while preventing the internal pressure of the VB Multiple Limit Switch from rising when the plunger is pressed. The seal scraper on the tip of the actuator prevents chips and dust from penetrating into the moving parts of the VB Multiple Limit Switch. • Apply extra tightening to the cap screw on the conduit. • In order to protect the plunger from abrasion and prolong its service life, apply a small amount of grease to the plunger and dog or cam that come into contact with the plunger. (Molybdenum disulfide grease is recommended.) Appropriate Tightening Torque 1. Tighten each cover mounting screw to a torque of 1.18 to 1.37 N·m. 2. Tighten each switch terminal screw to a torque of 0.19 to 0.29 N·m if the mounting screw is M3 in size. Be sure to wire each solderless terminal correctly with a screw as shown below. 3. Apply a torque of 5.88 to 6.86 N·m to tighten each mounting bolt of the casing if the mounting bolt is an Allen-head bolt that is M6 in size. Apply a torque of 8.04 to 9.22 N·m instead if the mounting bolt is an Allen-head bolt that is M8 in size. Mounting Holes Wiring Connect a cable with a thickness of 0.75 mm2 to the VB Multiple Limit Switch through the M3 round solderless terminals with insulation covers. Dimensions of Round Solderless Terminal Wiring (Ground Terminal Models) Consult your OMRON representative for details on models with 3 to 6 plungers. Others • Carefully connect a conduit to each conduit hole and apply a seal or tape to seal the conduit hole so that cuttings or other materials will not penetrate through the conduit hole. • Use the SC Connector. Consult your OMRON representative for details on SC Connectors. • Make sure that the position of the actuator that is traveling does not exceed the overtravel (OT) position. Make sure that the operating stroke is 70% to 100% of the specified OT distance. Precautions for Safe Use Operating plunger Movable plunger Seal scraper Cap Seal cap Switch box Cover Seal gasket O ring Cap screw Standard switch Solderless terminal Terminal screw Correct Incorrect 98±0.2 13±0.2 14±0.2 28±0.3 50±0.2 15±0.2 50±0.2 With a Flange Switch Box Four, 6.5-dia. or M6 mounting holes Two, 8.5-dia. or M8 mounting holes Two, 6 dia. −0.05/− 0.15 protruding positions Without a Flange Switch Box Two, 8.5-dia. or M8 mounting holes D dia. dZ dia. L l F B dz dia.: 3.2 D dia.: 1.9 B: 5.2 L: 16.4 F: 5.8 l: 8.0 (mm) Ground terminal SC connector Built-in switch VB |
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Similar Description - VB-3241 |
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