Inovance IS620P Series - If Inaccurate Positioning Occurs; To Remove the Cause a; To Remove the Cause B; To Remove the Cause C

Chapter 6 Troubleshooting IS620P User Manual
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If inaccurate positioning occurs, perform as follows:
a. Pout ≠ Pin
To remove the cause A, do as follows:
1) Check whether the pulse input terminal (low-speed or high-speed pulse input terminal) is
connected with shielded twisted pair (STP) cable.
2) If the open-collector input mode is selected for the low-speed pulse input terminal, change
into differential input mode.
3) Connect cable the pulse input terminal separately from main circuits (L1C/L2C, R/ S/ T, U/
V/ W).
4) If the low-speed pulse input terminal is selected, increase the filter time of low-speed
pulse input pin (H0A-24). If the high-speed pulse input terminal is selected, increase the
lter time of high-speed pulse input pin (H0A-30).
b. Pin x electronic gear ratio ≠ Pf:
To remove the cause B, do as follows:
1) Check whether a fault occurs during running, which results in that the servo drive stops
but not all references are executed.
2) If the cause is that the position deviation cleared signal (ClrPosErr) is effective, check
whether the position deviation clearing mode (H05-16) is reasonable.
c. Pf x △L ≠ PL:
To remove the cause C, do as follows:
1) Check the mechanical connections and nd the sliding position.