Mitsubishi FREQROL-SF - The Threading Operation Cannot be Correctly; Performed

1.3.13
The threading operation cannot be correctly performed.
Item Cause Check
Remedy
The orientation encoder e In the same manner as the
o Replace the detector or
of the spindle or the
Item 3 of Section 1.3.12(a),
printed circuit board with
1
printed circuit board check that the waveforms at
a new one.
(SF-TL card or SF-OR the check terminals (CHl,
(See Section 2.4.2 or
card) is defective. CH2, and CH3) on the SF-TL
2.4.3.)
card or SF-OR card are nor-
mal.
The cable between the
o In the same manner as the
o Replace the cable with a
orientation encoder of
Item 1 above,
check the wave-
new one.
2
the spindle and the forms at the check terminals
amplifier is defective. on the SF-TL card or SF-OR
card.
The speed of the spindle D In the same manner as the
0 In the same manner as the
motor deviates for 10 step 1 of Section 2.3.12(b),
Item 1 of Section 2.3.12(b),
rpm or more. check the signal of the
motor built-in encoder.
@ replace the printed cir-
3
cuit board SF-CA card
with a new one or
@ replace the motor built-in
encoder with a new one.
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