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xviii
Application Precautions
5
!Caution
The operating environment of the PLC System can have a large effect on the
longevity and reliability of the system. Improper operating environments can
lead to malfunction, failure, and other unforeseeable problems with the PLC
System. Be sure that the operating environment is within the specified condi-
tions at installation and remains within the specified conditions during the life
of the system.
5
Application Precautions
Observe the following precautions when using the DeviceNet Communica-
tions Unit.
• Fail-safe measures must be taken by the customer to ensure safety in the
event of incorrect, missing, or abnormal signals caused by broken signal
lines, momentary power interruptions, or other causes.
• Provide external interlock circuits, limit circuits, and other safety circuits in
addition to any provided within the PLC to ensure safety.
• Use the power supplies specified in the operation manuals.
• If the system is installed at a site with poor power supply conditions, take
appropriate measures to ensure that the power supply remains within the
rated voltage and frequency specifications.
• Provide circuit breakers and other safety measures to provide protection
against shorts in external wiring.
• Always ground the system to 100
Ω
or less when installing the system to
protect against electrical shock.
• Mount the PLC securely on DIN Track or with screws.
• Always turn OFF the power supply when mounting a DeviceNet Commu-
nications Unit.
• Always turn OFF the communications power supply and the power sup-
plies to the PLC and Slaves before attempting any of the following.
• Mounting or removing a Unit such as an I/O Unit, CPU Unit, Memory
Cassette, or Master Unit.
• Mounting or removing Remote I/O Terminal circuit sections.
• Assembling any devices or racks.
• Setting rotary switches.
• Connecting or wiring cables.
• Connecting or disconnecting connectors.
• Do not attempt to disassemble, repair, or modify any Units.
• Be sure that all the terminal screws are tightened to the torque specified
in the relevant manuals. Loose screws may cause fire, malfunction, or
damage the Unit.
• Be sure that all the mounting screws and cable connector screws are
tightened to the torque specified in the relevant manuals.
• Be sure that all the communications connector screws are tightened
securely. (The communications connector screw torque is 0.5 to 0.6 N•m.)
• Do not remove the label from a Unit before wiring. Always remove the
label after completing wiring, however, to ensure proper heat dispersion.
• Use the correct wiring components when wiring.
• Use crimp terminals for wiring. Do not connect bare stranded wires
directly to terminals.
• Double-check all wiring before turning ON the power supply.
Summary of Contents for SMARTSLICE - 04-2008
Page 1: ...DeviceNet Communications Unit Cat No W454 E1 03 SmartSlice GRT1 DRT OPERATION MANUAL ...
Page 2: ...SmartSlice GRT1 DRT DeviceNet Communications Unit Operation Manual Revised April 2008 ...
Page 3: ...iv ...
Page 5: ...vi ...
Page 13: ...xiv ...
Page 27: ...8 Basic Operating Procedure Section 1 5 ...
Page 57: ...38 Unit Functions Section 2 3 ...
Page 101: ...82 DeviceNet Explicit Messages Appendix A ...
Page 113: ...94 Standard Models Appendix C ...
Page 115: ...96 Power Consumption Tables Appendix D ...
Page 117: ...98 I O Current Consumption Appendix E ...
Page 119: ...100 Glossary ...