Mitsubishi FREQROL-SF Troubleshooting Manual page 55

Item Cause
In the orientation
operation using an
encoder, 5 V power is
not supplied to the
encoder.
The orientation para-
meter is incorrectly
set.
Check
Disconnect the connector CONE
which is connected to the en-
coder and check that 5V power
is applied between the pin 4
(or pin 5 or 6) and pin 20.
(See Appendixes l-7 and l-8).
shortcircuit ring of the pin.
supplied from the spindle
amplifier:
. The side A of the PIN 3 is
shortcircuited (on the
SF-OR card).
The portions 2 and 3 of the
PIN 5 are shortcircuited
(on the SF-TL card).
supplied from the NC:
The side B of the PIN 3 is
shortcircuited (on the
SF-OR card).
The portions 1 and 2 of the
PIN 5 are shortcircuited
(on the SF-TL card).
(See References 1.1.2(l) and
the spindle amplifier accords
with the orientation type.
1: Encoder
2: Magnesensor
Remedy
replace the cable which is
connected from the CONB to
the orientation encoder with
a new one.
applied and when the posi-
tion of the shortcircuit
ring is correct:
SF-PW module with a new
one.
(See Section 5.3.1(S).)
Alternatively, replace the
SF-OR card (or SF-TL card)
with a new one.
Check the NC power.
Alternativelv. reolace the
SF-OR card (or SF-TL card)
with a new one.