Omron MX2 DEVICENET OPTION BOARD User Manual page 11

Installation Precautions
!Caution
3 Installation Precautions
!WARNING
!Caution
4 Configuration Precautions
!Caution
The product will be used to control an adjustable speed drive connected to
high voltage sources and rotating machinery that is inherently dangerous if
not operated safely. Interlock all energy sources, hazardous locations, and
guards in order to restrict the exposure of personnel to hazards. The adjust-
able speed drive may start the motor without warning. Signs on the equipment
installation must be posted to this effect. A familiarity with auto-restart settings
is a requirement when controlling adjustable speed drives. Failure of external
or ancillary components may cause intermittent system operation, i.e., the
system may start the motor without warning or may not stop on command.
Improperly designed or improperly installed system interlocks and permis-
sives may render a motor unable to start or stop on command.
Always connect the grounding cable to one of the ground terminals of the
MX2-A@ Inverter. Failure to abide could lead to serious or possibly fatal injury.
Failure to observe these precautions could lead to faulty operation of the
Option Board or the Inverter, or could damage either of the two. Always read
these precautions.
• Install external breakers and take other safety measures against short-cir-
cuits in external wiring. Not observing this may result in burning.
• Be sure that all cable connector screws are tightened to the torque speci-
fied in the relevant manuals. Incorrect tightening torque may result in mal-
function.
• Do not allow metal clippings to enter either Option Board or Inverter when
wiring or installing the unit.
• Follow the network configuration and wiring instructions provided in the
DeviceNet Operation Manual (Cat. No. W267):
• Wire the DeviceNet cables and connectors correctly. Incorrect wiring
may result in burning.
• Always connect a Terminating Resistor at the prescribed locations of
the DeviceNet network to ensure the quality of the transmission path.
Do not apply termination anywhere else.
• Be sure that the Option Board is mounted correctly. Improper mounting
may result in malfunction.
• Disconnect the grounding cable when performing withstand-voltage tests.
Not disconnecting the grounding cable may result in burning.
Failure to observe these precautions could lead to unexpected operation of
the Option Board or the Inverter. Always read these precautions.
• Check the network related Inverter settings regarding DeviceNet node
address and DeviceNet remote I/O allocation. Not doing so may result in
unexpected operation.
• When replacing an Inverter be sure that all Inverter settings of the Inverter
being replaced are restored to the replacement.
• Restoring parameters stored in the remote operator also restores the
DeviceNet node address. Always check the node address and other net-
work related Inverter settings after restore.
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