There is a delay in the braking operation. Set the following ON/OFF timing.
∗1. The servomotor power is turned ON and the brake signal (/BK) is output at the same time.
∗2. The operation delay time of the brake depends on the model. For details, refer to Brake Operation Delay Time shown
below.
∗3. Allow a period of 200 ms before the speed reference is input after the brake power supply is turned ON.
∗4. The servomotor stop time is shown by t
d
. Use the following formula for the calculation of t
d
.
J
M
: Rotor moment of inertia (kgxm
2
) J
L
: Load moment of inertia (kgxm
2
)
N
M
: Motor rotational speed (min
-1
) T
P
: Motor deceleration torque (Nxm)
T
L
: Load torque (Nxm)
∗5. Always turn OFF the brake power supply after the servomotor comes to a stop. Usually, set t
d
+t
1
to 1 or 2 seconds.
∗6. Use Pn506, Pn507, and Pn508 to set the timing of when the brake will be activated and when the servomotor power
will be turned OFF.
Note: The above operation delay time is an example when the power supply is turned ON and OFF on the DC side.
Be sure to evaluate the above times on the actual equipment before using the application.
Brake Operation Delay Time
Model Voltage Brake Release Time (ms) Brake Applied Time (ms)
SGMJV-A5 to 04
24 VDC
60 100
SGMJV-08 80 100
SGMAV-A5 to 04 60 100
SGMAV-06 to 10 80 100
SGMPS-01, 08, 15 20 100
SGMPS-02, 04 40 100
SGMGV-03 to 20
24 VDC,
90 VDC
100 80
SGMGV-30, 44 170 100 (24 VDC), 80 (90 VDC)
SGMGV-55, 75, 1A 170 80
SGMGV-1E 250 80
SGMSV-10 to 25 170 80
SGMSV-30 to 50 100 80
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