Panasonic ST4 Instruction Manual
5.2 Troubleshooting of Controller ST4-C12EX
85
Symptom
Cause
Remedy
Various settings
were changed
during operation of
the device.
Turn OFF the power of the device and change
the output polarity.
Setting switch
Switch is broken.
Replace the ST4-C12EX.
Fault display:
•
During
sensor
diagnosis function
(see page 71)
The control output (OSSD 1/2) remains
OFF and making a diagnosis of the beam
received/interrupted condition of the
sensor.
After turning OFF the power of device, turn OFF
the setting switch "SW5" to return to normal
operation.
Fault display:
•
Effect
from
noise/power
supply or failure of
internal circuit
Affected by noise or power supply.
Internal circuit is damaged.
Check the noise condition around this device.
If the error could not be resolved, contact our
office.
The beam axes are not correctly aligned.
Align the beam axes.
When connecting sensors in series, match the
sensor addresses between emitter and receiver
of ST4-A
□
.
The receiver of ST4-A
□
is wrongly
connected to the emitter connector of the
controller, and the emitter of ST4-A
□
is
wrongly connected to the receiver
connector of the controller.
Mixed connection of emitter and receiver
for series connection.
Make sure that the colors of the connectors
match: gray: emitter, black: receiver.
Control output
indicator (green)
does not light up.
The connected ST4-A
□
is faulty.
Perform the sensor diagnosis function (see page
71).
Check the indicator of the connected ST4-A
□
(see "Connecting Multiple Sensors Heads" on
page 23).
For details, see "Troubleshooting of the Sensor
ST4-A
□
" on page 86.
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