
B–65142E/04
7. BUILT–IN BRAKEDESCRIPTIONS FOR THE α series
81
CAUTION
Pay attention to the following points when motors with
brakes are used.
1 Configure the brake circuit referring to the brake wiring
diagrams and recommended parts described in the
following items.
2 For the α, αM, αL and αC brake power supplies, use the
full–wave rectified 100 VAC or 90 VDC power supplies. The
allowable voltage fluctuation for both of these power
supplies is ±10%. Do not use a half–wave rectified 200 VAC
power supply. Doing so will damage the surge absorber.
3 For the α(HV) and αM(HV), use the 24 VDC power supply.
The allowable voltage fluctuation for this power supply is
±10%.
4 The brake in the motor is used to hold the machine when the
servo motor control is OFF. It is possible to brake the
machine by turning OFF the brake power in an emergency
stop or during a power interruption. However, it is impossible
to use this brake to reduce the stop distance in normal
operation.
5 Allow sufficient time to start the servo motor before
releasing the brake. Don’t use the brake as an aid for the
axis to stop at the same position for a long time, such as an
index table. Turn the servo off when holding the axis by the
built-in brake or another holding means. At this time, allow
sufficient time to set the brake before turning off the servo.
6 Models α40/2000 are longer because they contain a brake.
If an excessive load is applied to the opposite side of the
flange, the flange may be damaged. Do not apply any load
to the opposite side of the flange. Do not subject the motor
to excessive force.
7 Motor brake connectors do not have polarity.
7.2
CAUTIONS