CHAPTER 2 WIRING
ON OFF OFF
ON OFF ON
ON ON OFF
ON ON ON
PA1_44
PA1_45
PA1_46
PA1_47
Manual feed speed 4
Manual feed speed 5
Manual feed speed 6
Manual feed speed 7
(2) Under torque control
2
The rotation speed of the servomotor is limited with the speed selected with multi-step speed [X1],
[X2] and [X3].
The speed limit under torque control is shown in the table below.
X3 X2 X1 Parameter No.
Speed limit for enabling
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
-
PA1_41
PA1_42
PA1_43
PA1_44
PA1_45
PA1_46
PA1_47
Speed command voltage (VREF)
Speed limit 1
Speed limit 2
Speed limit 3
Speed limit 4
Speed limit 5
Speed limit 6
Speed limit 7
Parameter setting
To assign multi-step speed selection to a sequence input terminal, specify the corresponding value
("51," "52" or "53") to the input terminal function setting parameter.
Free-run [BX]: Sequence input signal (Reference value 54)
To put the servomotor forcibly into free-run (coast-to-stop).
Priority is given to this signal in all control modes.
Function
While the free-run [BX] signal assigned to a CONT input signal remains turned on, the output of the
servo amplifier is shut off and the servomotor free-run.
The output shaft of the servomotor decelerates (accelerates) according to the torque of the load.
The free-run signal is enabled in all control modes (position control, speed control and torque
control modes).
Under position control, the number of output pulses sent from the host controller deviates from the
revolution amount of the servomotor because the servomotor free-run while the signal remains
turned on.
Under speed control and torque control, as the servomotor automatically become free-run, in case
it is used for vertical transportation purpose, note that there is a risk of falling.
Parameter setting
To assign free-run to a sequence input terminal, specify the corresponding value ("54") to the input
terminal function setting parameter.
Description of I/O Signals 2-53