YASKAWA SIEMENS CNC Series, Maintenance Manual, Serviceman Handbook

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Safety precautions
xxi
• Do not touch the heat sinks, as they can get very hot.
Otherwise a burn could result.
• Confirm that the speed limits of the motors are compatible with the
inverter settings before operation.
Otherwise injury could result.
• Do not measure the signal voltages during operation.
Otherwise damage could result.
• The inverters are already set at the factory. Do not change the settings
unless you know exactly what you are doing.
Otherwise damage could result.
• When switching on the main power, ensure that at least 2 seconds have
elapsed after the last switching-off operation.
Otherwise malfunction could result.
• Never attempt to disassemble or modify the units or devices in the panels.
Otherwise a fire, damage, or malfunction could result.
• Do not tamper with the settings of the rheostats or other devices of the
control panels.
Otherwise a fire, damage, or malfunction could result.
CAUTION
MANDATORY
PROHIBITED