General Specifications; Scale Specifications - Renishaw RGH34 Installation Manual

General specifications

Power supply
5 V ± 5% 120 mA
NOTE: Current consumption figures refer to unterminated
RGI34 interfaces.
For digital outputs a further 25 mA per channel pair (e.g. A+, A-)
will be drawn when terminated with 120 Ω.
For analogue outputs a further 20 mA will be drawn when
terminated with 120 Ω.
Power from a 5 V dc supply complying with the requirements for
SELV of standard IEC BS EN 60950-1.
Ripple 200 mVpp @ frequency up to 500 kHz maximium
Temperature
Storage -20 °C to +70 °C
Operating 0 °C to +55 °C
Humidity 95 % relative humidity (non-condensing) to EN 60068-2-78
Acceleration Operating 500 m/s
Shock Non-operating 1000 m/s², 6 ms, ½ sine, 3 axes
Vibration Operating 100 m/s² max @ 55 Hz to 2000 Hz, 3 axes
Mass
Readhead 2 g
Interface 3 g
Readhead to interface
Very low profile zero insertion force micro-connector for 10 way
connections
Flexible Printed Circuit (FPC) cable. Cable flex life minimum
10 x 10
RGH34 RGS40 installation guide
2 , 3 axes
3 cycles at 5 mm bend radius.

Scale specifications

Scale type RGS40-S Reflective gold plated steel tape with protective lacquer coating.
Adhesive backing tape allows direct mounting to the
machine substrate.
RGS40-P Reflective gold plated steel tape with tough polyester coating for
applications using harsh solvents.
Adhesive backing tape allows direct mounting to the
machine substrate.
Scale period 40 µm
Linearity
RGS40-S ±3 µm /m
RGS40-P ±5 µm /m
Scale length Up to 50 m (>50 m by special order)
Form RGS40-S 0.2 mm x 6 mm (includes adhesive)
(H x W)
RGS40-P 0.3 mm x 6.3 mm (includes adhesive)
Substrate Metals, ceramics and composites with expansion coefficients
materials between 0 and 22 µm/m/°C
(steel, aluminium, Invar, granite, ceramic etc.)
Expansion coefficient Matches that of substrate material when scale ends are 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 <1 µm over temperature range
-20 °C to +50 °C
Temperature
Operating -10 °C to +120 °C.
Minimum installation 10 °C
Storage -20 °C to +70 °C.
Humidity
95% relative humidity (non-condensing) to EN 60068-2-78
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