Renishaw RGH25F User manual

RSLM high accuracy linear encoder
Installation guide
M-9562-9063-02-A
RGH25F RGS20 linear encoder system

Contents
Product compliance 1
Storage and handling 2
RGH25F readhead installation drawing 3
REF interface installation drawing 4
RGS20 scale installation drawing 5
Scale application 6
End clamps 6
Reference mark and limit switch actuator installation 6
Readhead mounting and alignment 7
System calibration 7
Reference mark setup 8
Limit switch 8
Output signals 9
Speed 9
Electrical connections 10
Output specications 11
General specications 13
Scale specications 13
RGH25F RGS20 installation guide

1
Product compliance
C
Renishaw plc declares that RGH25F complies with the applicable standards and regulations.
A copy of the EC Declaration of Conformity is available on request.
FCC compliance
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
The user is cautioned that any changes or modications not expressly approved by Renishaw plc or
authorised representative could void the user’s authority to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment.
This equipment generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his own expense.
NOTE: This unit was tested with shielded cables on the peripheral devices. Shielded cables must be
used with the unit to ensure compliance.
RoHS compliance
Compliant with EC directive 2011/65/EU (RoHS)
Further information
Further information relating to the RGH25F encoder range can be found in the RGH25F system
Data sheet (L-9517-9762). This can be downloaded from our website www.renishaw.com/encoder
and is also available from your local representative. This document may not be copied or reproduced
in whole or in part, or transferred to any other media or language, by any means without the written
prior permission of Renishaw. The publication of material within this document does not imply freedom
from the patent rights of Renishaw plc.
Disclaimer
RENISHAW HAS MADE CONSIDERABLE EFFORTS TO ENSURE THE CONTENT OF THIS
DOCUMENT IS CORRECT AT THE DATE OF PUBLICATION BUT MAKES NO WARRANTIES
OR REPRESENTATIONS REGARDING THE CONTENT. RENISHAW EXCLUDES LIABILITY,
HOWSOEVER ARISING, FOR ANY INACCURACIES IN THIS DOCUMENT.
The use of this symbol on Renishaw products and/or accompanying documentation indicates that the product
should not be mixed with general household waste upon disposal. It is the responsibility of the end user to
dispose of this product at a designated collection point for waste electrical and electronic equipment (WEEE)
to enable reuse or recycling. Correct disposal of this product will help to save valuable resources and prevent
potential negative effects on the environment. For more information, please contact your local waste disposal
service or Renishaw distributor.
The packaging of our products contains the following materials and can be recycled.
RGH25F RGS20 installation guide
Packaging Component Material ISO 11469 Recycling Guidance
Outer box Cardboard Not applicable Recyclable
Polypropylene PP Recyclable
Inserts Low Density Polyethylene Foam LDPE Recyclable
Cardboard Not applicable Recyclable
Bags High Density Polyethylene Bag HDPE Recyclable
Metalised Polyethylene PE Recyclable

Storage and handling
2
RGH25F RGS20 installation guide
RGS20 – 100 mm
NOTE: Ensure self-adhesive
tape is on outside of bend.
Minimum bend radius
Operating
Storage
System
+55 °C
0 °C
System
+70 °C
-20 °C
Humidity
95% relative humidity
(non-condensing)
to EN 60068-2-78
N-heptane
CH3(CH2)5CH3
Propan-2-ol
CH3CHOHCH3
Acetone
CH3COCH3
Methylated
Spirits
Chlorinated
Solvents
System
Readhead
UHV version only

3
RGH25F readhead installation drawing Dimensions and tolerances in mm
RGH25F RGS20 installation guide
*Dimensions measured from substrate.
†Required nominal 0.8 gap can be set using blue readhead spacer (supplied) positioned between readhead and actuator when positioning/xing the actuator.
‡The recommended thread engagement is 5 mm. The recommended tightening torque is between 0.5 and 0.7 Nm.
Reference mark
actuator
(A-9541-0037)
6.2
27
21
Fixing screws
M3 x 0.5 x 8
8
0.3
11.5*
6 (RGS20-S)
6.3 (RGS20-P)
3.8
4.8
0.09
8.5*
36
26
21.1
8.5
> 4
2 mounting holes
M3 x 0.5 through‡
Optical centreline Reference mark
sensor position
4*8*
A0.6
Detail A
Scale surface
0.8 ± 0.1
Rideheight
Readhead to
scale clearance
9.5
4
(Yaw tol. ± 0.5°)
(Roll tol. ± 1°)
(Pitch tol. ± 1°)
R>20 dynamic bend radius
R>10 static bend radius
Ø4.4 max
13.5
Arrow indicates forward direction
of readhead relative to scale
3
Alternative
mounting face
Mounting face
(Extent of mounting faces)
Scale thickness
0.2 (RGS20-S)
0.3 (RGS20-P)
( )
0.8 -0.1
+0.2
See note†