88
0V is 0RPM. If it is lower than 0V, the motor reverse runs, and the motor forward runs when it is
higher than 0V. If the current voltage of analog quantity is 5V, then 5V is 0RPM. If it is lower than 5V,
the motor reverse runs, and the motor forward runs when it is higher than 5V.
(2) If there is still fretting after the offset is adjusted automatically, zero clamping can be used or the
parameter P3-03 can be increased appropriately. If it is changed to 5, it means the dead band voltage is
0.005v.
5.4.4.6 Speed command input deadband voltage
Speed command input
deadband voltage
V-REF zero drift
correction of analog value
V-REF analog voltage
bias
Note:
(1) When the input speed command voltage is within the range set by this parameter, the input
command is considered as 0.
(2) If there is any fretting after the offset is adjusted automatically, the dead time voltage can be
increased properly.
Sampling voltage (mV)
Analog channel voltage (mV)
P3-47 300mV
P3-48 3000mV
P3-03 300mV
L1 L2
L3 L4
L1 Servo analog terminal 0V
L2 After zero calibration of analog voltage
L3 After offset of analog voltage
L4 After analog voltage add to deadband