Inductive sensors meet safety standards
An
IFM Electronic product story
Edited by the Engineeringtalk editorial team
Oct 28, 2009
IFM Electronic has developed a range of fail-safe inductive sensors that are fully compliant with the latest standards for safety-related parts of the control system.
Not only are the sensors compliant with Performance Level d to ISO / EN 13849, the GF and GG series from IFM are also certified to IEC 62061 SILcl2 and comply with IEC61508 to SIL2.
GF and GG series fail-safe inductive sensors from IFM are certified to IEC 62061 SILcl2 and comply with IEC61508 to SIL2
The GF and GG types, in M12 and M18 housings respectively, are standard inductive sensors with full internal diversity, redundancy and monitoring circuitry.
Each has two solid-state outputs and will therefore connect to a suitable safety input in the same fashion as other, familiar safety devices.
Functional safety is maintained even when the device is connected as a three-wire PNP sensor.
Diagnostics in the sensor will react to internal or external faults dropping the signal out if any faults should occur.
This could be damage to the sensing element in the front of the device, or a cross fault in the wiring.
Despite classed as a safety device, the GF and GG series inductive sensors are cabled using standard M12 sockets on three or four-core cable.
The monitoring removes the need for armoured cable.
The GF or GG series inductive sensors can be used where personnel safety is paramount, or where the integrity of the operation requires it.
Applications include reliable sensing of moving parts on rotary indexing tables and machine tools; reliable triggering of slow travel or shut off for end position on presses, gantries and actuator arms; and safe monitoring of robot movement.
The devices are fully sealed to IP67 and the units are claimed to be immune to clogging or sticking.
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IFM releases full-metal inductive sensors
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Inductive sensors are certified fail-safe
In response to demand, IFM Electronic has satisfied a need for certified fail-safe inductive sensors that are safe to use up to Category 4 (EN954-1) or SIL 3 (EN61508). -
Sensors suit safety applications
Last year there was only one, but now there is a whole family of inductive sensors from IFM Electronic that are safe to use in a Category 4 (EN954-1) or SIL 3 (EN61508) situation.
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