Yaskawa MP930 - Manual (Page 11)

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Mandatory
D Always use the ground the FG terminal to a ground resistance 100 Ω or less.
Failure to ground the MP930 may result in electrical shocks or malfunctioning.
Select, separate, and lay external cables correctly.
D Consider the following items when selecting the I/O signal lines (external cables) to connect the
MP930 Module to external devices.
S Mechanical strength
S Noise interference
S Wiring distance
S Signal voltage, etc.
D Separate the I/O signal lines from the power lines both inside and outside the control panel to re-
duce the influence of noise from the power lines.
If the I/O signal lines and power lines are not separated properly, malfunctioning may result.
Power
circuit
cables
Example of Separated External Cables
General
control cir-
cuit cables
Digital I/O
signal
cables
Steel separator
J Application Precautions
WARNING
D Do not touch any Module terminals when the system power is ON.
There is a risk of electrical shock.
Caution
D Do not attempt to modify the MP930 programs, force outputs, switch between RUN and STOP, or
performed other similar operations while the MP930 is operating without knowing the direct and
indirect consequences of the operation.
Incorrect programming or operation may damage the equipment or cause an accident.