FG 40 Ex Incremental Optical Encoders

Incremental encoders, Sensor Systems

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FG 40 Ex

Incremental optical encoders, Ex certified (ATEX / IECEx)

ATEX and IECEx certified (gas and dust) to EN/IEC 60079
Explosion-proof housing, salt-water proof aluminium, IP66
Up to 250000 pulses HTL/TTL, up to 2500 sine periods
Option: Second signal output

Description

Incremental optical encoders with Ex certification

The incremental, solid shaft encoders FG 40 Ex can be deployed in a wide variety of applications to measure the speed at standard, main and secondary drives in potentially explosive atmospheres, for example in the oil and gas industry as well as in petrochemical applications. Certified to EN 60079 (ATEX) and IEC 60079 (IECEx) the encoder is certified for applications in Zones 1 and 2 (gas) as well as Zones 21 and 22 (dust) and designed to meet degree of protection requirements IP66. Technically, they are based on the FG 40 models. The explosion-proof housings with detachable terminal box covers facilitate connecting the cables during on site installation. That in turn means it is possible to use different cable lengths to connect a device of the same type.

Technical Data

Supply voltage	12-30 VDC
Signal amplitude	HTL or TTL Sin/Cos
Pulse rate	Standard pulse rates for HTL, TTL and Sin/Cos: 500, 600, 1000, 1024, 1200, 1300, 2500 Interpolation factors (for HTL/TTL pulses only): 1, 2, 4, 8, 10, 20, 40, 50, 100
Output signals	0°, 90°, N, status and inverted signals
Maximum frequency	Solid shaft: up to 6000 rpm / max. 200 kHz
Electrical connection	Terminal strip in a terminal box
Construction type / Ø shafts	Solid shaft (B5) / Ø 11 mm, Ø 14 mm with feather key
Device temperature range	-40 °C to +60 °C (T6 up to +55 °C)
Degree of protection	IP66
Weight	Approx. 3.9 kg
Device options	AK: System with terminal strip connections AKK: Two systems with terminal strip connections AH: HTL signals 0°, 90°, reference pulse, status; all signals each with respective inverted signals AT: TTL signals 0°, 90°, reference pulse, status; all signals each with respective inverted signals SH: 1 Vpp signals sine/cosine, reference pulse; status as HTL signal; all signals each with respective inverted signals ST: 1 Vpp signals sine/cosine, reference pulse; status as TTL signal; all signals each with respective inverted signals
Mechanical options	Accessories: Cable glands and blanking plugs (not in scope of supply) It is only allowed to use cable glands and blanking plugs that are approved and certified for the respective application in accordance with the standards EN/IEC 60079-0 and EN/IEC 60079-1 (gas) or EN/IEC 60079-31 (dust).
Special features and certificates	ATEX and IECEx certified to EN/IEC 60079: Gas: II 2G Ex db IIC T6-T5 Gb Dust: II 2D Ex tb IIIC T85°C Db IP6x