3TK28 Sirius Safety Relays
The Sirius 3TK2810-0 standstill monitor increases safety in hazardous areas. Without a sensor, it detects motor stoppage from the residual magnetization of the rotating motor. When an adjustable threshold value is undershot, it uses its outputs to allow access to hazardous areas, for example by unlocking a protective door.
No additional sensors are required: the standstill monitor measures the induced voltage of the decelerating motor at the terminals of the stator winding. If this voltage approaches zero, the device detects motor standstill and actuates, for example, the protective door interlock.
The advantages of the safe standstill relay are …
- Flexible – for use with a variety of motors and frequency converters
- Cost-effective – as no additional sensors are required
- Higher plant availability – thanks to fast fault diagnosis and display using fault LEDs
- Device can be used with frequency inverters
The Sirius 3TK2810-1 speed monitor combines two safety functions in one unit by continuously monitoring machines and plants for standstill and speed. Through simple parameterization and permanent diagnosis on the display, faults can be quickly remedied at any time – often before they cause plant downtimes.
The device is set with menu guidance, for instance speed limits defined, via buttons arranged on the front of the device and an LCD display. Diagnostics and status information are displayed in plain text with several LEDs to facilitate the early detection of faults. This reduces downtimes and increases plant availability.
A complete protective door monitoring system with spring-loaded or magnetic locking tumbler mechanism is already integrated in the Sirius 3TK2810-1 speed monitor. No additional evaluation unit is required which not only saves costs but also space, and the safety function has the same quality.
The advantages of the reliable speed monitor are …
- Suitable for all sensors
- Menu-assisted, simple parameterization
- Direct diagnosis via display and therefore reduction of downtimes through early detection of faults
- Integrated protective door monitoring, so a higher level of safety through enabling of the plant only when it is in a safe state
If you are interested in learning more about the 3TK28 Sirius Safety Relays, or any other Siemens items, please call 01244 288138 or email info@dbicontrol.co.uk today.
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