FG 2 / FGHJ 2 Optical Encoders

Incremental encoders, Sensor Systems

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FG 2 / FGHJ 2

Optical encoders for standard drives in heavy industry

Hollow shafts up to Ø 17 mm, solid shaft Ø 11 mm (flange mounting)
Bigger bearing for greater load-bearing capacity
600, 1024, 2048, 4096 pulses HTL / TTL, others on request
Options: Second incremental output, FOC transmitter, additional overspeed switch

Description

Optical encoders for standard drives

The incremental encoders FG 2 (solid shaft) and FGHJ 2 (hollow shaft) ensure the speed of standard, auxiliary and secondary drives is reliably measured. When attaching with an isolated coupling (solid shaft) or an isolating hybrid bearing (hollow shaft) they protect the drivetrain against damaging shaft currents. Short-term availability and additional options ensure they can be deployed in a wide variety of applications and are also suitable as simple replacement solutions for encoders supplied by third-party manufacturers. The axial terminal boxes offer sufficient space for straightforward wiring. The plug-in connectors are vibration-proof by design to ensure these are permanently secure even under extreme conditions.

Technical Data

Supply voltage	12-30 VDC
Signal amplitude	HTL or TTL
Pulse rate	600, 1024, 2048, 4096 – others on request.
Output signals	0°, 90°, N and inverted signals
Maximum frequency	Solid shaft: up to 7000 rpm / 200 kHz Hollow shaft: up to 6000 rpm / 200 kHz
Electrical connection	Terminal strip in a terminal box Fixed cable (0.6 – 4 m) Plug-in connection ITT Cannon (pin configuration compatible with comparable devices from third-party manufacturers following consultation) Options: Mating connector set comprising a 90° circular connection and EMC cable gland FOC connector in a terminal box
Construction type / Ø shafts	Solid shaft (B5) / Ø 11 mm with feather key Hollow shaft (isolated bearings) / Ø 12 mm, Ø 16 mm with clamp, Ø 17 mm with taper 1:10
Device temperature range	-25 °C to +85 °C
Degree of protection	IP66
Weight	Approx. 2 kg
Device options	S: Electronic overspeed switch; switching speed preset ex works FOC: Signal transmission via fiber optic cable 50 / 125 μm or 62.5 / 125 μm AKK: Second system with dedicated scanner and electronics for additional incremental output
Mechanical options	Hollow shaft devices: Torque bracket (on request)
Special features and certificates	UL/CSA FGHJ 2: Increased dielectric strength up to 3 kV (direct mounting to drive-controlled motors)