SMC Networks EX600-SEC Series Operation Manual page 36

Part No.
No. Problem
EX600-
Red LED is ON.
(Diagnosis is
activated)
"0 and 1" red
LEDs are ON.
7 AMB
Red LED is
flashing.
(Diagnosis is
activated)
Red/green all
LEDs are
flashing.
Red ST(M) LED is
8 flashing.
(Diagnosis is activated)
Red ST(M) LED is ON.
9
Red/green ST(M) LED is
flashing alternately.
Red PWR LED is ON.
(Diagnosis is activated)
10
Red PWR(V) LED is ON.
(Diagnosis is activated)
∗: Refer to "Diagnostic" (page 63) for details.
Presumed cause
Diagnosis error
Analogue input or output
device power supply is
short-circuited.
Input value has exceeded
the upper limit when set to
current input type range.
Diagnosis error
(1)Input value has
exceeded the upper or
lower limit of the range.
(2)Input or output value
(value set by user) has
exceeded the upper or
lower limit.
Unit has failed
Diagnosis error (SI unit)
(1)Valve is short-circuited.
(2)Valve is open-circuited.
(3)ON/OFF count of the
valve has exceeded
the set value.
SI unit has failed.
(1)Connection between
the units is defective.
(2)Configuration memory
error.
Power supply voltage for
control and input is
abnormal.
Power supply voltage for
output is abnormal.
-35-
Troubleshooting
Check the parts with error by using the LED display or
∗
master or H.T. Re-wire the short-circuited part, and
check if the cable and analogue input or output device
are normal.
Check the following when the range of the Analogue
input unit is set to current input.
(1)Set the input value of the analogue input device so
that it does not exceed the upper limit.
(2)Voltage is input from the analogue input device.
Ensure the range of the input unit matches the range
of the input device.
(1)If the input value from the analogue input device
exceeds the upper or lower limit of the range, select
the appropriate range so that the input value is within
the range. Or invalidate diagnosis.
(2)If the input (output) value from the analogue input
(output) device exceeds the upper or lower limit of the
user set value, adjust it so that the input (output)
value is within the range of the user set value. Or
invalidate diagnosis.
Stop the operation and contact SMC.
Check the parts with error by using the LED display or
∗
master or H.T.
(1)Check the operation after replacing the valve.
(2)Check the operation after replacing the valve.
(3)Reset the ON/OFF count to zero or change the set
value. Or invalidate diagnosis.
Stop the operation and contact SMC.
(1)Confirm that there is no loose connection between
the units and connect them correctly.
(2)Unit layout is not the same as the unit layout when it
was memorized. Return the layout to the same as
when it was memorized, or update the configuration
memory, or turn off the configuration memory
function.
Supply 24 VDC ±10% for control and input power
source.
Supply 24 VDC +10/-5% for output power source.
No.EX##-OMO0027