Omron S8AS, Руководство пользователя

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112
Troubleshooting
Section 7-1
7-1 Troubleshooting
If the S8AS is not operating properly, check the items listed in the following
table before requesting repairs. If the problem cannot be remedied, contact
your OMRON sales representative.
Observed problem Possible cause Remedy Reference
page
Installation The S8AS was installed on a
DIN Rail, but the bottom of
the S8AS is not attached. The S8AS's bottom latch is
not mounted properly. Check that the S8AS has
been pressed until the bottom
latch clicks. 45
Parameter
settings The desired parameter is not
being displayed. The setting is not allowed in
the present protection level. Change the protection level
setting. 59
The set value was changed,
but the change wasn't
accepted. The new setting was not
saved. After pressing the Up and
Down Keys to change the set
value, press the ENT Key and
verify that the setting flashes
and the setting is saved. 61
The branch outputs are not
working. All branch outputs are discon-
nected. Switch to Test Mode and con-
nect the desired branch out-
puts. 80
Communications cannot be
established after changing the
communications parameters. Communications parameters
are not updated until the
power is turned OFF and ON
again. Turn the power OFF, then ON
again. 54
Equipment
setup The display is flashing “ON” in
Test Mode, but power is not
being supplied by the outputs. A flashing “ON” display indi-
cates that the S8AS is waiting
to turn ON the outputs. If the ENT Key is pressed, the
output will be connected and
power will be supplied. When
power is being supplied,
“OFF” will flash on the display
to indicate the S8AS is wait-
ing to turn OFF the output. 80
When the output is connected
in Test Mode, it is cut off
immediately and can't be con-
nected again. Check whether the status
indicator is lit red. The current
may be higher than the abnor-
mal current tripping threshold. Check for problems such as
output wiring and load con-
nection problems. If no prob-
lems are found, press the
Reset Key.
78, 115
Operation The displayed temperature is
clearly different from the
ambient temperature. The S8AS detects the S8AS's
internal temperature, which
can be 10 to 20°C higher than
the ambient temperature. If the over-temperature out-
put is being used to control a
fan or cooling equipment, set
the over-temperature output
threshold based on the graph
on page 37. 35, 65
An alarm was output and the
cause of the alarm was elimi-
nated, but the alarm display
was not cleared. The S8AS doesn't disregard
temporary errors, so the dis-
play and output are main-
tained even after the cause of
the alarm is cleared. The alarm can be cleared by
pressing the Reset Key. 115