Yaskawa Z1000U - Manual (Page 21)

Motor with Brake
Take caution when using the drive to operate a motor with a built-in holding brake. If the brake is connected to the output side
of the drive, it may not release at start due to low voltage levels, so be sure to install a separate power supply for the motor
brake. Note that motors with built-in brakes tend to generate a fair amount of noise when running at low speeds.
n Notes on Power Transmission Machinery
Installing an AC drive in machinery that was previously connected directly to the power supply will allow the machine to
operate at variable speeds. Continuous operation outside of the rated speeds can wear out lubrication material in gear boxes
and other power transmission parts. Make sure that lubrication is sufficient within the entire speed range to avoid machine
damage. Note that operation above the rated speed can increase the noise generated by the machine.
u Drive Label Warning Example
Always heed the warning information listed in Figure i.2 .
WARNING
Read manual before installing.
Wait 5 minutes for capacitor
discharge after disconnecting
power supply.
To conform to requirements,
make sure to ground the supply
neutral for 400V class.
After disconnecting from power
supply,please wait 5 minutes
before inspecting, performing
maintenance or wiring the
converter.
Risk of electric shock.
Hot Surfaces
Wait 5 minutes or longer
until the unit has cooled.
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Figure i.2 Warning Information Example and Position
i.2 General Safety
YASKAWA ELECTRIC TOEP C710636 10B Z1000U HVAC MATRIX Drive User Manual 21