RGH41 Series Readhead
Overview
Renishaw's 40um RGH41 series readheads offer all the benefits of the established 20um RG2 linear encoder system, such as reflective tape scale, patented filtering optics, set-up LED, good dirt immunity and high speed.
These compact readheads with integral interpolation provide an increased range of resolutions to match the demands of a wide range of applications, whilst their high speed enables an increase in the productivity of the end-user's system.
The 40um RGH41 increases the already generous set-up tolerances of the RG2, whilst maintaining Renishaw's famous contamination immunity.
For added flexibility, dual limit switch sensing is included as standard to enable dedicated signals for each end-of-axi indication, along with a repeatable reference or datum mark.
These benefits give the RGH41 greater flexibility complementing the breadth of applications in which the RG2 is already used, from co-ordinate measuring and layout machines to electronics assembly and test, linear motors and a host of custom linear motor solutions.
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Specifications
| Power Supply | 5V±5% Ripple |
120mA (typical), 175mA (RGH41N, W, Y, H) NOTE: For digital outputs, current consumtion figures refer to unterminated readheads/interfaces. A further 25mA per channel pair (eg A+, A-) will be drawn when terminated with 120Ω. Renishaw encoder systems must be powered from a 5V dc supply complying with the requirements for SELV of standard EN (IEC) 60950. <200 mVpp maximum @ frequency up to 500kHz maximum |
| Temperature | Storage -20°C to +70°C Operating 0°C to +55°C | |
| Humidity | Storage 90% maximum relative humidity (non-condensing) Operating 80% maximum relative humidity (non-condensing) |
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| Sealing | IP50 | |
| Acceleration | Operating 500m/s2 BS EN 60068-2-7:1993 (IEC 68-2-7:1983) | |
| Shock (non-operating) | 1000m/s2, 6ms, 1/2 sine BS EN 60068-2-27:1993 (IEC 68-2-27:1987) | |
| Vibration (operating) | 100m/s2 max @ 55Hz to 2000Hz BS EN 60068-2-6:1996 (IEC 68-2-6:1995) | |
| Mass | Readhead 50g Cable 38g/m | |
| EMC compliance (system) | BS EN61000 BS EN 55011 | |
| Cable | 12 core, double-shielded, maximum outside diameter 4.7mm Flex life > 20x105 cycles at 50mm bend radius |
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| Connector options |
Code - connector type
D - 15 pin 'D' type plug L - 15 pin 'D' type plug V - 12 pin circular plug W - 12 pin circular coupling plug F - Flying lead X - 16 pin in line connector
Application
RGH41T, D, G, X, N, W, Y, H RGH41A, B RGH41B RGH41B All readheads All readheads |
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Technical specifications
| Type | Reflective gold plated steel tape with protective lacquer coating or tough polyester coating option for applications using harsh solvents and self-adhesive backing |
| Scale pitch | RGS40-S, RGS40-PC = 40um |
| Linearity | RGS40-S = ±3um/m, ±1um/60mm RGS40-PC = ±5um/m, ±1.5um/60mm |
| Scale length | 100mm - 50m (>50m by special order) |
| Substrate materials | Metals, ceramics and composites with expansion coefficients between 0 and 22 um/m/°C (steel, aluminium, Invar, granite, ceramic etc.) |
| Expansion coefficient | Matches that of substrate material with scale ends fixed by epoxy mounted end clamps |
| End fixing | Epoxy mounted end clamps (A-9523-4015) using 2 part epoxy adhesive (A-9531-0342) Scale end movement <1um over temperature range -20°C to 50°C |
| Operating specification | Temperature: 10°C to 120°C (Scale only, also refer to readhead Data sheet) Minimum installation temperature 10°C Humidity: 80% maximum RH (non-condensing) |
