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Mitsubishi FREQROL-SF - Page 54

Mitsubishi FREQROL-SF
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(b)
The motor rotates at the orientation speed but does not stop.
Item
Cause
Check
Remedy
The detector
(magne-
o
Rotate the motor in the
man-
0
Readjust the related
cont-
sensor or encoder) is
ner that it does not
per-
rols by referencing the
defective.
form the orientation and
description of the
orienta-
check that the position
feed-
tion control circuit
back signal is normal.
(Section 3).
0
In case of magnesensor:
0
If it is impossible to
re-
(On the SF-OR or
SF-TLcard)
adjust the controls, replace
-
Waveform
bet-
the detector with a new one.
E%;~zd
///iJ$~~
-
Waveform bet-
j
E%;~“”
+
‘c;,
L
-
Check that the above wave-
forms are normal.
1
@
In case of encoder:
(SF-OR or SF-TL card)
.
Waveform
bet-
gm-
ween
CH2 and
OM
l-----L
-
Waveform bet-
ween CH3 and OM
Check that the above wave-
forms are normal.
(Note) The OM terminal is
located on the SF-CA card
terminal board (lower right
portion).
(See Appendix
6(l).)
(See the note of the alarm
No.21,
Section 3.5, and
Appendix
9(2)
131.1
The following printed
o
In the same manner as the
D
Readjust the related
cont-
circuit board is
defec-
Item 1 above,
check the
wave-
rols by referencing the
des-
tive.
forms at the check terminals
cription of the orientation
@
In case of analog
on the SF-OR card or SF-TL
control circuit (Section
3).
linkage:
card.
o
If it is impossible to
re-
2
SF-OR card or
SF-
adjust the controls, replace
CA card.
the printed circuit board
@
In case of bus
with a new one.
linkage:
(See Sections 2.4.2 and
SF-TL card or
SF-
2.4.3.)
CA card
Continued on the next page.
-49-

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