Mitsubishi Electric FR-A820-00046 Instruction Manual page 905

Parameters
Setting of operation time (X13 signal, Pr. 11)
● Set the time applying the DC injection brake (zero speed control and servo lock) to Pr. 11 "DC
injection brake operation time".
● When the motor does not stop due to large load moment (J), increasing the setting produces an
effect.
● When Pr. 11 = "0 s", DC injection brake (zero speed control and servo lock) will not operate. (The
motor will coast to stop.)
● When Pr. 11 = "8888", DC injection brake (zero speed control and servo lock) will operate when
the X13 signal is turned ON. DC injection brake will operate when the X13 signal is turned ON
even while operating.
● For the X13 signal input, set "13" in any of Pr. 178 to Pr. 189 to assign the function.
When Pr. 11 = "8888"
Pr. 12
DC injection
brake
voltage
NOTES Under Real sensorless vector control, when the X13 signal turns ON while Pr. 11 = "8888", the zero
speed control is activated regardless of the Pr. 850 "Brake operation selection" setting.
At the time of vector control or PM sensorless vector control, the zero speed control or the servo
lock will operate depending of the setting of Pr. 802.
The X13 signal is disabled during PM sensorless vector control.
FR-A800
X13 ON
ON
STF
Fig. 5-347:
When Pr. 11 is set to "8888"
Time
Time
ON OFF
(G) Control parameters
I001559E
5 - 703