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RGH22 series readhead

RGH22 series readhead
4Pages

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Renishaw’s RG2 linear encoder system is a noncontact optical encoder designed for position feedback solutions. The system uses a common reflective tape scale scanned by a readhead chosen from a range of options offering industry standard digital square wave or analogue sinusoidal output signal formats. Renishaw’s patented optical scheme is used in all readhead series and gives proven performance benefits together with high tolerance to scale contamination. The RGH22 range is suitable for use in a broad range of applications, offering high resolution and high speed with stability and reliability. A dual limit sensor option is also available offering two dedicated signal outputs, left and right end-of-axis travel indication. RGH22 is an ideal feedback solution wherever precision controlled movement is required. The RGH22 readheads offer the full set of RG2 features and integral interpolation in a robust package, with an integral set-up LED for quick and easy installation. Common applications include co-ordinate measuring and layout machines, semiconductor/electronics manufacturing and inspection, height gauges, electronics assembly and test, linear motors, digital image setters and a variety of custom linear motion solutions. Single limit range RGH22D - 5 µm resolution RGH22X - 1 µm resolution RGH22Z - 0.5 µm resolution RGH22Y - 0.1 µm resolution RGH22B - 1 Vpp differential RGH22C - 12 µA differential (no limit) Dual limit range RGH22P - 5 µm resolution RGH22Q - 1 µm resolution RGH22R - 0.5 µm resolution RGH22S - 0.1 µm resolution RGH22H - 50 nm resolution RGH22A - 1 Vpp differential • Non-contact open optical system • Integral interpolation • Industry standard digital and analogue output options • Resolutions from 5 µm to 50 nm • Integral reference and limit sensors • Dual limit sensor option • Integral set-up LED • Uses RGS20-S self-adhesive scale

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P limit switch sensor position 14.6 14.6 Arrow indicates forward direction of readhead relative to scale R50 dynamic bend radius R10 static bend radius Alternative mounting faces * Dimensions measured from substrate. A-9531-0251 P limit switch actuator Mount dimple to substrate (size as Q actuator) A-9531-0250 Reference mark actuator Q limit switch sensor position Readhead to scale clearance Scale surface A-9531-0251 Q limit switch actuator Mount dimple up Optical centre Reference mark sensor position

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Operating and electrical specifications Edge separation - digital readheads Clocked output readheads. The RGH22Y, S, H readheads are available with a variety of different clocked outputs. The clocked options have been designed to prevent fine edge separations being missed by receiving electronics utilising slower clock speeds. Depending on the clock frequency chosen, each option has a different maximum speed and associated minimum recommended counter clock frequency. Head type Encoder velocity (m/s) Resolution (µm) Speed - analogue type C readheads (12µA) Speed - analogue type B, A...

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New Mills, Wotton-under-Edge, Gloucestershire GL12 8JR United Kingdom Output specifications Digital output signals - type RGH22D, X, Z, Y, H, P, Q, R, S Form - Square wave differential line driver to EIA RS422A (except limit switches P, Q and external set-up signal X) Incremental 2 channels A and B in quadrature (90° phase shifted) Alarm differential line driven output for single limit readheads single ended (E-only) line driven output for dual limit readheads For RGH22D, X, Z, P, Q, R, - alarm asserted when signal amplitude <15%. For RGH22Y, S, H - alarm asserted when: - Signal amplitude...

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RGH22 series readhead 4Pages

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RGH22 series readhead
4Pages