Renishaw RLI20-P User manual

RLI20 Renishaw laser interfaceRLI20-P laser interface (Panasonic)
User’s guide
M-9926-0005-02-B

© 2012-2015 Renishaw plc. All rights reserved.
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 prior written 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.
Trademarks
RENISHAW and the probe symbol used in the RENISHAW
logo are registered trade marks of Renishaw plc in the United
Kingdom and other countries. apply innovation and names and
designations of other Renishaw products and technologies are
trade marks of Renishaw plc or its subsidiaries.
Renishaw part no: M-9926-0005-02-B
Issued: 09 2015
All other brand names and product names used in this
document are trade names, trade marks, or registered trade
marks of their respective owners.
Care of equipment
The RLI20 laser interface contains precision electronic
components. Avoid exposure to moisture. Remove power before
connecting, disconnecting or handling.
Changes to Renishaw products
Renishaw plc reserves the right to improve, change or modify
its products and documentation without incurring any obligation
to make changes to Renishaw equipment previously sold or
distributed.
Warranty
Renishaw plc warrants its equipment provided that it is installed
exactly as defined in associated Renishaw documentation.

Safety
It is the responsibility of the manufacturer and/or encoder
system installation authority to ensure that, in safety critical
applications of the RLI20 laser interface, any form of signal
deviation from the limits of the receiving electronics, howsoever
caused, shall not cause the machine to become unsafe. It is also
their responsibility to ensure that the end user is made aware of
any hazards involved in the operation of their machine, including
those mentioned in Renishaw product documentation, and to
ensure that adequate guards and safety interlocks are provided.
When using the RLI20 as part of a positioning system on
machines, beware of pinch and/or crush hazards that can
be created, depending on how and where the equipment is
installed.
Further information on safety is contained in Appendix B.
The RLI20 has been designed for use with an RLE or HS20
laser encoder only. Its use is not supported with other encoder
systems.

FCC notice
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.
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.
The user is cautioned that any changes or modifications not expressly
approved by Renishaw plc or authorised representative could void the
user’s authority to operate the equipment.
EC compliance
Renishaw plc declares that the RLI20 interface complies with the
applicable directives, standards and regulations.
A copy of the full EC Declaration of Conformity is available at the
following address:
www.renishaw.com/RLECE
WEEE
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.
c

1
Contents
Contents
1 System overview ............................................................. 2
1.1 Part numbers ........................................................... 2
2 Installation ....................................................................... 3
2.1 Analogue quadrature interface................................. 3
2.2 Serial interface ......................................................... 5
2.3 Error output.............................................................. 6
2.4 Power ....................................................................... 6
2.5 Mechanical installation............................................. 7
3 Configuration................................................................... 8
3.1 RLE set-up – dip switches ....................................... 8
3.2 Position .................................................................... 9
3.3 Error output............................................................ 10
3.4 LED indicators........................................................ 10
Appendix A – Specification .................................................. 11
Appendix B – Safety information ......................................... 12

2System overview
1 System overview
The RLI20 converts 1 Vpp analogue quadrature signals from
an RLE laser interferometer encoder system into a position
reading, which is available over a serial bus.
The RLI20-P is specifically programmed to be compatible with
Panasonic motor controllers.
1.1 Part numbers
The following saleable part numbers are available:
A-9926-0200 - RLI20P laser interface (Panasonic)
The followng accessories are available:
A-9926-0204 - RLI connector kit

3
Installation
The signals should be wired as shown in Table 1:
Table 1 – Signal wiring between RLE or HS20 and RLI20
Signal Function
1st pair Sine and /Sine
2nd pair Cosine and /Cosine
3rd pair Error and /Error
4th pair Ref mark and /Ref mark
Individual screens 0 V (both ends)
Outer screen Case/shell (both ends)
WARNING: It is essential that the error line inputs
are connected so that the RLI20 can determine if any errors
have occurred in the RLE or HS20 system. If the analogue
quadrature is incorrectly wired, the system may still work but
may move distances and at speeds that are not expected and
may move in the opposite direction to that expected. If a voltage
exceeding ±7 V is applied on any of the signals, damage to the
unit can occur.
WARNING: Care should be taken to ensure that
individual signal wires do not short. It is advised that all joints
are sleeved. If input signal wires short, the position output will
be unreliable and the error signal may not work reliably.
!
!
2 Installation
2.1 Analogue quadrature interface
The RLI20 accepts the nominal 1 Vpp analogue quadrature
from the RLE or HS20. Signal termination is contained within
the RLI20 itself. There is no need for any other termination to be
used.
Cabling
The choice of cables for this application is very important. A
cable with individually screened twisted pairs is recommended.
An example of a suitable cable is the Belden 8164 cable. The
maximum recommended cable length is 10 m.

4Installation
Input connector pinout
The analogue quadrature input connector pinout is shown in
Table 2. All pins are protected to ±7 V. The connector on the
RLI20 is a 15 way female D-type. Figure 1 shows the mating
D-type connector.
Table 2 – Analogue quadrature input (15 way D-type male)
Pin number Function
10 V
2 –
3 Error
4 Ref Mark
5 Sine
6 Cosine
7 –
8 –
9 –
10 /Error
11 /Ref Mark
12 /Sine
13 /Cosine
14 –
15 –
Shell Chassis ground
Figure 1 – Analogue quadrature input mating connector

5
2.2 Serial interface
The RLI20 outputs RS485 serial data at 2.5 Mbps.
Cabling
A screened twisted pair is recommended with SD+/SD- as one
pair 0 V/5 V as second pair and outerscreen as chassis. The
connection on the RLI20 is a 9 way male D-type, the mating
connector is shown in Figure 2. Pinouts are show in Table 3.
5 V power from the controller is needed to detect when the
controller is switched on or power cycled.
Table 3 – Serial interface pinout
Pin Function
2 REQ+ / SD+
3 REQ- / SD-
4,5 5 V power from Panasonic controller
8,9 0 V
Shell Chassis
1,6,7 Not connected
Installation
9 way D-type
31
16
52
Figure 2 – 9 way female D-type connector

6
2.4 Power
The RLI20 power is supplied via a 4 way male M16 Binder,
the mating connector is shown in Figure 4. Pinouts are shown
in Table 5. This is identical to wiring requirements for RCU10
power connector.
Table 5 – Power connector pinout
Pin Function
124 V
224 V
30 V
4 Chassis
Case Chassis
The 24 V power supply should be single fault tolerant certified to
EN (IEC) 60950-1.
Figure 4 – 4 way female M16 Binder connector
2.3 Error output
The RLI20 outputs on RS422 compatible error signal.
Cabling
A screened cable is recommended. The connector on the RLI20
is a 4 way female Binder M9, the mating connector is shown in
Figure 3. Pinouts are shown in Table 4.
Table 4 – Error connector pinout
Pin Function
1 /Error
20 V
3+5 V
4 Error
Shell Chassis
Figure 3 – 4 way male Binder
Installation