List Of Alarm Codes - Mitsubishi Electric MELSEC iQ-F FX5 User Manual

Error code Error name
1EDH Setting Input type/range
(offset/gain setting) error
1EFH User range setting input type
mismatch error
1F08H Module power supply error
3001H Hardware failure (moderate)
3030H Flash memory error

List of alarm codes

If an alarm occurs during operation, a multiple input module stores the alarm code into 'Latest alarm code' (Un\G2) of the
buffer memory. Turning on 'Error clear request' (Un\G70, b15) clears the alarm code in 'Latest alarm code' (Un\G2).
The following table lists the alarm codes that may be stored.
: This symbol indicates the number of the channel where an alarm has occurred. A numerical value of 0 to 7 is used to
correspond to CH1 to 8.
(CH1: 0, CH2: 1, CH3: 2, CH4: 3, CH5: 4, CH6: 5, CH7: 6, CH8: 7)
Alarm code Alarm name
080H Process alarm (upper limit)
081H Process alarm (lower limit)
082H Rate alarm (upper limit)
083H Rate alarm (lower limit)
090H Input signal error detection
(upper limit)
091H Input signal error detection
(lower limit)
092H Input signal error detection
(simple disconnection)
0A0H Disconnection detection
Description and cause
The "Setting Input type/range (Offset/gain
setting)" for the specified channel is set to the
factory default setting when Channel change
request (Un\G70, b11) has been turned on.
The presently set input type differs form the
input type stored in the flash memory when the
"Setting Input type/range (Offset/gain setting)" is
set to the "User range setting".
The 24 V DC power supply is not normally
supplied to the multiple input module.
A hardware failure (moderate) has occurred in
the multiple input module.
The data in the flash memory is abnormal.
Description and cause
The process alarm (upper limit) has occurred in
CH.
The process alarm (lower limit) has occurred in
CH.
The rate alarm (upper limit) has occurred in
CH.
The rate alarm (lower limit) has occurred in
CH.
An input signal error (upper limit) has been
detected in CH.
An input signal error (lower limit) has been
detected in CH.
An input signal error (simple disconnection) has
been detected in CH.
Disconnection has been detected in CH.
Corrective action
Set the "Setting Input type/range (Offset/gain
setting)" for the specified channel to the user range
setting again.
Set the input type to be used as the offset/gain
setting.
Check the wiring of the cable or the supplied
voltage. After the check, turn offonoff Error clear
request (Un\G70, b15) to eliminate this error and
resume the conversion.
If the error occurs again, the possible cause is a
failure of the module. Please consult your local
Mitsubishi representative.
Power offon the module. If the error occurs again,
the possible cause is a failure of the module. Please
consult your local Mitsubishi representative.
Check the digital output values. If the values are
abnormal, please consult your local Mitsubishi
representative.
Corrective action
Adjust CH Digital operation value to fall within the
range. As a result, the corresponding bit of CH
Alert output flag (Process alarm upper limit) and/or
CH Alert output flag (Process alarm lower limit),
and Alert output signal (Un\G69, b8) turn off
automatically.
Adjust the change rate in CH Digital output value
to fall within the range. As a result, the
corresponding bit of CH Alert output flag (Rate
alarm upper limit) or CH Alert output flag (Rate
alarm lower limit), and Alert output signal (Un\G69,
b8) turn off automatically.
Adjust the analog input value to fall within the range,
and then turn offonoff Error clear request
(Un\G70, b15). As a result, the corresponding bit of
Input signal error detection flag and Input signal
error detection signal turn off.
Re-establish the connection and turn off→on→off
Error clear request (Un\G70, b15). As a result, the
corresponding bit of Disconnection detection flag,
and Disconnection detection signal (Un\G69, b6)
turn off, and the alarm code of Latest alarm code is
cleared.
3 FX5-8AD
3.10 Troubleshooting
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