Fuji Electric FE ZSS, Инструкция по эксплуатации

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INZ-TN1ZSS-E
5.3.1.9 Alarm types
Following types of alarm are displayed.
Alarm display Alarm contents Probable causes
LD Failure Laser is faulty • Failure caused by laser durability
LD Temp. Error Peltier which is cooling the laser
cannot control the set temperature. • Peltier failure
• Thermocouple failure
• The receiver unit and the transmitter
unit are used at an installation location
exceeding the set range.
• The unit is used in an environment
where gas temperature is beyond the
specification.
Low Light Trans. Light transmission required for the
measurement cannot be obtained. • Light transmission is insufficient in an
environment with high dust.
• Light transmission is insufficient in an
environment with high water vapor.
• Contamination of window and conden-
sation are caused by insufficient air
purge.
• Optical path is blocked due to dust.
• Optical axis is deflected due to vibra-
tion.
• Optical axis is deflected due to distor-
tion of a stack.
• Optical axis is deflected due to external
faults.
Connection Error Communication between receiver
unit and transmitter unit does not
occur properly. • Break of wiring
• Wrong wiring of RS-432 terminal
• Poor contacts of the connector unit
• CPU board failure
• PD digital board failure
High Gas Temp. It is reported when exceeded gas
temperature is detected. • The actual gas temperature is more than
450°C.
• The value set to analog input on the
“AO Select” screen is not correct.
Out of Range It is reported when exceeded gas
pressure is detected. • Actual gas pressure is outside the speci-
fication range.
• The value of the input range set on the
“AO Select” screen is not correct.
AI Under Input channel on the “AO Select”
screen. • AI terminal is not connected to the ex-
ternal input device when channel setting
is set on the “AO Select” screen.
•
AI terminal and setting channel do not
match.
•
Input is not 4 to 20mA DC.
Box Temp. Warning It is reported when the temperature
in the receiver unit and the trans-
mitter unit exceeds the temperature
for normal operation.
• The unit is used at an installation loca-
tion exceeding the set range.
• The unit is used in an environment
where gas temperature is beyond the
specification.
• Insufficient air purge causes rise in
temperature.
• The distance between the Receiver /
Transmitter unit and the stack is not
maintained sufficiently.