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KSS-20 - Solenoid Controlled Interlock Switch
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| The KSS20 is a solenoid controlled key driven 20amp electrical switch suitable for the controlled isolation or switching of low (20 amp maximum) current. This product is used where the controlled isolation of a machine needs to take place, i.e. where a robot has to finish a cycle prior to isolation. The solenoid is continuously rated and its position electrically monitored, making it suitable for category 4 safety applications. This type of isolator should be used for short term, off load isolation and operated by suitably qualified personnel. The KSS20 is manufactured from either brass or stainless steel making it suitable for use in standard or harsh corrosive environments. The unit is supplied suitable for mounting into an existing panel or for surface mounting within its own IP65 rated lockable steel enclosure. | ||||
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| Under normal operating conditions the key is trapped in the lock portion and the solenoid de-energized. To release the key, a signal must be received by the solenoid from an external source, i.e. once a robot has parked. To energize the solenoid, the push button is depressed. With the solenoid energized, the LED will illuminate to confirm that the key can be removed. Rotation and subsequent removal of the key will alter the condition of the contacts within the switch, this may be changing from all of the contacts closed to open or as a changeover i.e. 2 contacts from closed to open and 2 contacts from open to closed. The switch condition cannot be changed without the correctly coded key | ||||
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The KSS20 is designed to operate as part of an integrated safety system, controlling access to hazardous areas. A typical example of machine isolation and access control is shown below. Typical industries using the KSS20 are high volume automated ‘cell’ orientated production facilities, i.e. Automotive, Packaging, Bottling etc.
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When the robot has finished its programmed cycle a signal is supplied to the solenoid via the depressed push button. The removal of the key in the KSS20, changes the condition of the electrical supply to the machine to a safe condition. This key is then used to unlock the interlock on the access door. The guard can only be opened when the electrical supply has been switched into a safe condition. |
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| • Solenoid (continuously rated), key driven, force break 20 amp switch. • Number of poles and contact arrangement to suit your requirements (4 pole standard). • Solenoid position monitoring (suitable for Cat 4 if supported by the other safety components). • Suitable for surface or panel mount (IP65 steel enclosure). • Power isolation - 400MA - 20A / Motor isolation AC - 23A 7.5KW or AC-3 5.5KW |
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