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RGH41 Series Readhead

Overview

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.

Renishaw RGH41 Series Readhead

  • Digital range
    • RGH41T - 10um resolution
    • RGH41D - 5um resolution
    • RGH41G - 2um resolution
    • RGH41X - 1um resolution
    • RGH41N - 0.4um resolution
    • RGH41W - 0.2um resolution
    • RGH41Y - 0.1um resolution
    • RGH41H - 50um resolution
  • Analogue range
    • RGH41B - 1 Vpp differential (single limit)
    • RGH41A - 1 Vpp differential (dual limit)
  • Non-contact open optical system
  • Large installation tolerances
    High speed operation up to 15m/s
  • Industry standard digital and analogue output options
  • Resolutions from 10um to 50nm
  • Integral reference and dual limit sensors
  • Integral set-up LED
  • Uses Renishaw RGS40-S self-adhesive scale

Specifications

RGH41 SERIES READHEAD OPERATING AND ELECTRICAL 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)
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
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


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)

Part Numbering System

RGH41 SERIES READHEAD PART NUMBERING SYSTEM
RGH41

Installation Drawing

RGH41 SERIES READHEAD INSTALLATION DRAWING
RGH41

COMPANY

SERVICES

CONTACT

505 Yishun Industrial Park A
PBA Building
Singapore 768733

Tel +(65) 6576 6767
Fax +(65) 6576 6768

Sales / General Enquiries
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