Mitsubishi Electronics IB-1500193(ENG)-D ユーザーズマニュアル

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Emergency stop in this section refers to the following states.

[1] Emergency stop was input (including other axis alarms)

[2] NC power down was detected

[3] A drive unit alarm was detected

With the servo drive unit, if the deceleration stop function is validated, the motor will decelerate following the 

set time constant while maintaining the READY ON state. READY will turn OFF and the dynamic brakes will 

function after stopping.

If an alarm, for which dynamic brakes are designated as the stopping method, occurs, the motor will stop 

with the dynamic brakes.

When the load inertia is large, deceleration stop can be executed at a shorter time than the dynamic 

brakes.

(The stop time for the normal acceleration/deceleration time constants will be achieved.)

Set the time for stopping from the rapid traverse rate (rapid: axis specification parameter) in the 

deceleration time constant for emergency stop (SV056: EMGt). The operation stops with the position 

loop step when 0 is set.

For the standard setting value of SV056, refer to the following table.

When applying this setting to the synchronous control axes, set the same value with negative symbol to 

the both axes. Even if the dynamic break stop is applied to either axis, it is also applied to the other axis.

#2004: G0tL G0 time constant (linear)

#2005: G0t1 G0 time constant (primary delay) / Second-step time constant for soft acceleration/deceleration

EMGt<=G0tL*0.9

EMGt<=(2*G0t1)*0.9

#1219:aux03

bit 7:Time constant 
setting changeover 

for soft acceleration/

deceleration

0:Accelerating time is G0tL

EMGt<=(G0tL-G0t1)*0.9

1:Accelerating time is obtained by 

G0tL+G0t1

EMGt<=G0tL*0.9

EMGt<=G0tL*0.9

If the deceleration control time constant at emergency stop (EMGt) is set to a value longer than the 

above value, the soft limit point (stroke end point) may be exceeded. Take care as the axis could 

collide the machine.