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© Panasonic Industriar Devices SUNX Co., Ltd. 2016
Chapter 5 Troubleshooting
Symptom
Cause
Remedy
All indicators are OFF
Power is not supplied.
Connect the power supply correctly.
Check if the power capacity is sufficient.
The power voltage is out of the
specification value.
Set the power voltage correctly.
Connectors are not securely
connected.
Connect connectors securely.
Test input indicator
(orange) lights.
Test input is opened
Short-circuit the test input terminals between T1
and T2.
Interlock indicator (yellow)
lights.
Resetting is not
cancelled.
Wiring to reset is
not performed.
Wire the reset input terminal (manual reset: be
-
tween X1 and X2 or auto reset: between X1 and
X3) correctly.
To ensure the system safety, use the NC contact
of the forced guide relay.
Relay is fused.
Replace the relay.
Relay response
time is long.
Replace the relay with the one of appropriate
response time.
The start-up re-
set signal is not
input. (Manual)
Use the momentary switch.
Replace the switch.
<Digital error indicator (red)>
Display
Symptom
Cause
Remedy
Incorrect number of
sensors
The number of sensors con-
nected does not conform to the
value of the sensor number set-
ting switch.
Or the number is not matched
due to failure of sensors.
Match the setting of this device with the
number of sensors connected.
Set the sensor connection number setting
switch correctly.
Replace the failed sensors.
Sensor error
The sensors connected do not
operate correctly.
Be sure sensor is ON
Turn ON power supply again and the status is
not changed. Replace the sensor
Sensor monitoring output indicator con-
nected to broken sensor and indicator of
the failed sensor brink.
Safety input 1 / 2
circuit error
Safety input terminals SIN1 and
SIN2 are shorted.
Check wires of safety input terminals SIN1
and SIN2.
Check if safety contacts or safety sensors are
broken, and replace them as necessary.
,
Control outputs 1 /
2 (OSSD 1 / 2) out-
put circuit error
Control output terminal Y1 or Y2
is shorted with 0V or +V.
Wire control output terminals Y1 and Y2
correctly.
Refer to “
2-4 Wiring
.”
Use the current value within the specification
range of control output terminals Y1 and Y2.
Refer to “
6-1 Specifications
. ”
Shorting between control out-
put terminals Y1 and Y2 or with
other input / output lines is
found.
Overcurrent runs in control out-
put terminal Y1 or Y2.
The settings of the control output
polarity selection switch do not
conform to combinations of con-
trol output terminals Y1 and Y2
wires.
Set the control output polarity selection switch
correctly.
Refer to “
2-2 Names and Functions of
Parts
.”
Wire control output terminals Y1 and Y2
correctly. Refer to “
2-4 Wiring
.”
Output circuit error
Output circuit is damaged.
Replace this device.
Troubleshooting
