Help with Emergency Stop Switches specifications:
Actuation
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| Actuation Type | |||
| Your choices are... | |||
| Pushbutton | An operator uses the pushbutton to activate the contacts. Typically these are large pushbuttons and are appropriately labeled as emergency stop switches. | ||
| Telescopic Antenna | Movement of the antenna in any direction will actuate the switch contacts and, by use of the appropriate equipment, stop the machine. | ||
| Trip Wire (Rope Pull) | Emergency stop cable-pull systems can be actuated at any point along the “trip wire.” Some trip wire devices are designed to operate if the cable breaks or goes slack. | ||
| Trip Wire / Pushbutton Combination | Combination of trip wire and pushbutton design. Typically they incorporate both a trip wire for actuation along any point of the cable and a pushbutton for emergency stopping at the end of the installation. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
| Minimum Operating Force (Trip Force) | The minimum force required to initiate switching. | ||
| Search Logic: | All matching products will have a value less than or equal to the specified value. | ||
| Trip Wire (Rope Pull) Features | For Trip Wire (Rope Pull) Actuation Only. | ||
| Your choices are... | |||
| Right Angle Pull | The trip wire must be actuated at a right angle from the switch body. | ||
| Top Pull | The trip wire must be actuated from the top of the switch body. | ||
| Broken Cable Detection | Broken cable, or slack, detection indicates when cable tension decreases from the pre-set tension. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
| Maximum Operating Distance (Rope Span): | Typical cable span. | ||
| Search Logic: | All matching products will have a value greater than or equal to the specified value. | ||
Switch Specifications
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| Normally Open Contacts | Normally Open - A relay contact pair that is open when the coil is not energized. | ||
| Search Logic: | All matching products will have a value greater than or equal to the specified value. | ||
| Normally Closed Contacts | Normally Closed - A relay contact pair that is closed when the coil is not energized. | ||
| Search Logic: | All matching products will have a value greater than or equal to the specified value. | ||
| Changeover Contacts | Changeover, Typically Form C (SPDT). | ||
| Search Logic: | All matching products will have a value greater than or equal to the specified value. | ||
| Positive Break Contacts | Also called Positive Opening Contacts; The contact point opens reliably and remains open in activated position even in the event of mechanical failure, such as breakage of a spring or contact welding. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
Electrical Switching Specifications
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| Electrical Switching | Used to isolate a machine's electrical power. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
| Maximum Current Rating | The maximum current rating of the switch. | ||
| Search Logic: | All matching products will have a value greater than or equal to the specified value. | ||
| Maximum AC Voltage Rating | The maximum AC voltage rating of the switch. | ||
| Search Logic: | All matching products will have a value greater than or equal to the specified value. | ||
| Maximum DC Voltage Rating | The maximum DC voltage rating of the switch. | ||
| Search Logic: | All matching products will have a value greater than or equal to the specified value. | ||
Pneumatic Switching Specifications
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| Pneumatic Switching | Used to isolate a machine's compressed air supply instead of electrical power. | ||
| Search Logic: | "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice. | ||
| Pressure Range | The pressure range of the pneumatic switch. | ||
| Search Logic: | User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria. | ||
Reset / Release Operation
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| Reset / Release Operation | There are four types of reset (latching release) mechanisms. | ||
| Your choices are... | |||
| Automatic | No reset action required (momentary). Reset / Release should never be used to restart the machine. | ||
| Pull to Reset | The button or cable must be pulled to reset the switch and resume operation. | ||
| Twist to Reset | The button or cable must be twisted to reset the switch and resume operation. | ||
| Pushbutton | There is a reset pushbutton, which must be actuated to reset the emergency stop switch and resume operation. | ||
| Key Switch | The operator must use a key in order to reset the switch and resume operation. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
Features
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| Your choices are... | |||
| Emergency Stop Label | The emergency stop switch is clearly labeled as such. | ||
| Explosion Proof | Emergency stop switches are rated as explosion proof if they are constructed with housings that can withstand explosions. This classification may also include housings, which can withstand sparking and flames. | ||
| Hermetically Sealed | Hermetic seals provide a vacuum or leak tight seal such as a brazed glass-to-metal seal. | ||
| Illuminated Pushbutton | The pushbutton is illuminated for visibility in low light situations. | ||
| Integral Alarm | An integral audio or visible alarm is provided with the emergency stop switch. | ||
| Lockable | Switch includes provision for locking in specified positions. | ||
| Tamper Resistant | The switch is provided with tamper proof measures to ensure it can only be altered by the appropriate personnel. | ||
| Visual Indicator | The emergency stop switch is supplied with a visual indication of operation, such as an LED to indicate power. | ||
| Search Logic: | All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches. | ||
Environment
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| Operating Temperature: | The temperature range over which the device must operate. | ||
| Search Logic: | User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria. | ||