Mitsubishi Electric Q172CPU Programming Manual page 5

In systems where perpendicular shaft dropping may be a problem during the forced stop,
emergency stop, servo OFF or power supply OFF, use both dynamic brakes and
electromagnetic brakes.
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 servomotor 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
servomotor) used in a system must be compatible with the Motion controller, servo amplifier
and servomotor.
Install a cover on the shaft so that the rotary parts of the servomotor 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 servomotor are connected with a
timing belt, etc.). Install a stopping device to ensure safety on the machine side.
(2) Parameter settings and programming
Set the parameter values to those that are compatible with the Motion controller, servo amplifier,
servomotor 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.
CAUTION
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CAUTION
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