Renishaw RGH22, RGS20 Installation Manual

Installation guide

M-9531-9818-01-B

RGH22 RGS20 linear encoder system

Contents

Product compliance 1

Storage and handling 2

RGH22 readhead installation drawing 3

RGS20 scale installation drawing 4

Scale application 5

End clamps 5

Reference mark and limit switch actuator installation 6

Readhead mounting and alignment 6

Reference mark set-up 7

Limit switch 7

Output signals 7

Speed 8

Electrical connections 9

Output specications 10

General specications 12

Scale specications 12

RGH22 RGS20 installation guide

1

RGH22 RGS20 installation guide

Product compliance

C

Renishaw plc declares that RGH22 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 RGH22 encoder range can be found in the RGH22 encoder system
Data sheet (L-9517-9676). 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.

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

2

RGH22 RGS20 installation guide

Storage and handling

N-heptane

CH3(CH2)5CH

3

Propan-2-ol

CH

3

CHOHCH

3

Acetone

CH3COCH

3

Methylated

Spirits

Chlorinated

Solvents

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

R>50 dynamic bend radius
R>10 static bend radius

>6

4

4

Reference mark sensor position

Optical centre

2 holes M3 x 0.5 x 9.5 deep

‡

(Yaw tol. ± 0.5°)

0.38

15.5

10

Q limit switch sensor position

Q limit switch actuator
(

A-9531-0251)

Mount dimple up

(size as P actuator)

(Roll tol. ± 1°)

0.13

14.6

P limit switch sensor position

2 holes M3 x 0.5 x 7.5 deep

‡

P limit switch actuator

(A-9531-0251)

Dimple to substrate

14.5

7

14

10.6

*

2.2

*

Ø4.7 max

5

*

2

*

(Pitch tol. ± 1°)

0.8

44

38

3

Readhead to
scale clearance

Rideheight 0.8 ± 0.1

A

Detail A

Scale surface

7.6

†

3

*

13

9

27

3.6

11.6

17

*

*

Dimensions measured from substrate. †Alternative mounting faces

‡

The recommended thread engagement is 5 mm. The recommended tightening torque is between 0.5 and 0.7 Nm.

Set-up LED

23.5

Arrow indicates forward direction

of readhead relative to scale

Scale thickness:

0.2 (RGS20-S)

0.3 (RGS20-P)

14.6

3

RGH22 RGS20 installation guide

RGH22 readhead installation drawing

Dimensions and tolerances in mm

3

10.5

6 (RGS20-S)

6.3 (RGS20-P)

Reference mark actuator

Epoxy mounted

(A-9531-0250)