D2 Series Servo Drive User Manual Drive Tuning
HIWIN MIKROSYSTEM CORP. 6-47
(1) Encoder confirmation function
Click
in the window of performance center or select the “Encoder test/tune” option in the
function menu of “Tools” to open this function window for observing whether the value or signal of
encoder is normal. The function window for digital encoder is shown in figure 6.8.1.
Figure6.8.1 Digital encoder
(2) Encoder value confirmation
The signal of digital encoder is comprised of two digital pulses with 90°-phase difference. For D2
drive, this function can be used to check whether the encoder value is correct. For example, move
the motor with a known distance in manual to check whether the read “Position” is the same as the
moved distance.
(3) Index signal confirmation
The Z-phase signal of encoder can be used to confirm whether the signal is normally received via
the “Index” light in figure 6.8.1. When the drive gets the Z-phase signal, the “Index” light on the
window flashes green.
6.9 Error map function
The motor accuracy is usually determined by the linear encoder used on the positioning platform. The
positioning accuracy is usually measured and corrected by using a laser interferometer, so that the
positioning error table can be obtained. D2 drive has an error map function. By inputting and saving the
error table to the drive via HMI, the drive can use this information to calculate the compensation value at
the fixed distance by using the linear interpolation manner to improve the positioning accuracy.
After measuring the positioning accuracy and obtaining the error table, set the compensation interval
(“Interval”) and total compensation points (“Total points”) first, and then input the error compensation
value into the table one by one.
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