Renishaw HS20 Installation Manual page 65

the relative positions of master and slave axes should be monitored. If the difference in their
positions exceeds an expected limit, axis motion must be stopped.
Important note: In the case of measures 6 to 9, the limits need to be selected carefully depending on
the application and the type of position compensation selected to avoid false alarms.
It is the responsibility of the system integrator to ensure that in the event of a failure of any part of the
Renishaw Laser System that the motion system remains safe. In the case of motion systems with
powers or speeds capable of causing injury, secondary protection measures must be included in the
design. Refer to the General Safety Information in the Introduction for details of suitable secondary
safety measures. It is recommended that such secondary measures be tested during system
integration by deliberately introducing single faults into the system. (Obviously such tests need to be
carried out carefully to ensure injury cannot occur if such secondary systems fail to operate)
For further advice, consult the appropriate machinery safety standards.
Laser beam description and safety labels
1mW continuous wave output, collimated with a gaussian intensity distribution and a full beam
diameter of 6 mm. The following safety labels are attached to the HS20 laser encoder:
Important note: It is advisable to ensure that these labels are attached and visible when the
HS20 system is installed.
Quadrature resolution warning
It is important to set the output resolution of the Renishaw system to match the controller's input
resolution. If the quadrature resolution is set incorrectly, the axis may move for distances and at
speeds that are not expected. For example, if the output resolution from the Renishaw system is set to
half that of the controller input, the axis may move twice as far and twice as fast as expected.
Direction sense warning
It is important to set the direction sense correctly. If it is set incorrectly, the machine will move in the
opposite direction to that expected, and may accelerate until it reaches the axis limits. In the case
of parallel twin rail drives, it is important that the direction sense of the slave axis is set to match the
master axis. Failure to do this will cause opposite ends of the cross-member to move in opposite
directions, possibly causing damage to the machine.
LASER RADIATION
DO NOT STARE INTO BEAM
CLASS 2 LASER PRODUCT
632.8nm MAX 1mW CW
IEC/EN 60825-1:2007
LASER RADIATION
DO NOT STARE INTO BEAM
CLASS 2 LASER PRODUCT
632.8nm MAX 1mW CW
IEC/EN 60825-1:2007
Figure D.1 - Safety label positioning
THE DEVICE COMPLIES WITH PART 15 OF THE FCC RULES
OPERATION IS SUBJECT TO THE FOLLOWING CONDITIONS:
(1)THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE
(2)THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED,
INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED
OPERATION.
COMPLIES WITH 21 CFR1040.10 & 1040.11
EXCEPT FOR DEVIATIONS PURSUANT TO LASER NOTICE No 50
DATED 24 JUNE 2007
THE DEVICE COMPLIES WITH PART 15 OF THE FCC RULES
OPERATION IS SUBJECT TO THE FOLLOWING CONDITIONS:
(1)THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE
(2)THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED,
INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED
OPERATION.
COMPLIES WITH 21 CFR1040.10 & 1040.11
EXCEPT FOR DEVIATIONS PURSUANT TO LASER NOTICE No 50
DATED 24 JUNE 2007
AVOID EXPOSURE
Laser radiation
is emitted from this aperture
AVOID EXPOSURE
Laser radiation
is emitted from this aperture
61
Laser Interferometer
DISCONNECT FROM POWER
BEFORE REMOVING COVER
WARNING
DISCONNECT FROM POWE
BEFORE REMOVING COVE
MODEL SERIAL No.
RENISHAW plc
WOTTON-UNDER-EDGE
GLOUCESTERSHIRE UK
MODEL SERIAL No. VOLTS
RENISHAW plc
WOTTON-UNDER-EDGE
GLOUCESTERSHIRE UK
LASER RADIATION
DO NOT STARE INTO BEAM
CLASS 2 LASER PRODUCT
632.8nm MAX 1mW CW
IEC/EN 60825-1:2007
DO NOT STARE INTO
CLASS 2 LASER PR
632.8nm MAX 1m
CONNECTOR 1 CONNECTOR 2
LASER SIGNAL
CONNECTOR 1 CONNECTOR 2
WARNING
VOLTS POWER MANU
MADE IN THE
POWER
MADE
LASER RADIAT
IEC/EN 60825-1:2
LASER SIGNAL