Yaskawa MP900 Teach Pendant - Manual (Page 9)

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Safety Precautions
This section outlines safety precautions for the correct use of this product. Read this manual and oth-
er related manuals carefully before attempting to install, operate, maintain, or inspect the Teach Pen-
dant for MP9jj Machine Controllers. Attempt to use the product only after you have a clear under-
standing of the device, safety precautions, and the safety symbols.
J Wiring Precautions
Caution
D Connect the correct power supply for the required ratings.
Connecting unsuitable power supplies may cause heat damage or fire.
D Wiring must be performed by qualified personnel.
Wrong or inappropriate wiring may result in fire, failure, or electric shock.
D Care must be taken not to let foreign matter such as cable chips into the Units.
Foreign matter in the Modules may cause fire, failures and/or malfunctions.
Mandatory
D Ground the protective ground terminal to a resistance of 100 Ω or less.
Not grounding the protective ground terminal may result in electric shock or malfunction.
Select, separate, and lay external cables correctly.
D Consider the following items when selecting the I/O signal lines (external cables) to connect the
MP9
jj 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, malfunction may result.
Power
circuit
cables
Example of Separated External Cables
General
control cir-
cuit cables
Digital I/O
signal
cables
Steel separator