Mitsubishi Electric FR-A800, Instruction Manual

Page: 845 / 1042

Parameters (G) Control parameters
FR-A800 5 - 665
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.
Fig. 5-329:
When Pr. 11 is set to "8888"
I001559E
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.
Output fr
equenc
y
[H
z]
DC injection
brake
voltage
Time
ON
Pr. 12
X13
Time
OFF
STF
ON ON
When Pr. 11 = "8888"