Mitsubishi Electric Melsec-Q172DCPU User Manual page 5

The dynamic brakes must be used only on errors that cause the forced stop, emergency stop, or
servo OFF. These brakes must not be used for normal braking.
The brakes (electromagnetic brakes) assembled into the servo motor are for holding applications,
and must not be used for normal braking.
The system must have a mechanical allowance so that the machine itself can stop even if the
stroke limits switch is passed through at the max. speed.
Use wires and cables that have a wire diameter, heat resistance and bending resistance
compatible with the system.
Use wires and cables within the length of the range described in the instruction manual.
The ratings and characteristics of the parts (other than Motion controller, servo amplifier and servo
motor) used in a system must be compatible with the Motion controller, servo amplifier and servo
motor.
Install a cover on the shaft so that the rotary parts of the servo motor are not touched during
operation.
There may be some cases where holding by the electromagnetic brakes is not possible due to the
life or mechanical structure (when the ball screw and servo motor are connected with a timing belt,
etc.). Install a stopping device to ensure safety on the machine side.
To maintain the safety of the programmable controller system against unauthorized access from
external devices via the network, take appropriate measures. To maintain the safety against
unauthorized access via the Internet, take measures such as installing a firewall.
(2) Parameter settings and programming
Set the parameter values to those that are compatible with the Motion controller, servo amplifier,
servo motor and regenerative resistor model and the system application. The protective functions
may not function if the settings are incorrect.
The regenerative resistor model and capacity parameters must be set to values that conform to
the operation mode, servo amplifier and servo power supply module. The protective functions
may not function if the settings are incorrect.
Set the mechanical brake output and dynamic brake output validity parameters to values that are
compatible with the system application. The protective functions may not function if the settings
are incorrect.
Set the stroke limit input validity parameter to a value that is compatible with the system
application. The protective functions may not function if the setting is incorrect.
Set the servo motor encoder type (increment, absolute position type, etc.) parameter to a value
that is compatible with the system application. The protective functions may not function if the
setting is incorrect.
Set the servo motor capacity and type (standard, low-inertia, flat, etc.) parameter to values that
are compatible with the system application. The protective functions may not function if the
settings are incorrect.
CAUTION
CAUTION
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