YOKOGAWA RC400G, User Manual

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<5. Converter Operation>
5-20
IM 12F4A1-01E
Table 5.15 Types of <failure> for Which <FAIL> Lamp Lights
Error
Code
<failure> Contents
Detecting
Conditions
Detectable
Mode
Mode in which
<failure>
Contact Signal
is Output
Selection
of
Detecting
Function
"stop"
Err11 Concentration range exceeded
Out of -0.5 to
11.0 mg/l range All modes
<MEAS.> Unavailable
Err12 Sample temperature failure
Out of 0 to 50
°C range
All modes <MEAS.> Unavailable
Err13
Out-of-sample in the measuring
tank
<MEAS.> <MEAS.> Available
Err14 Converter failure
(AD circuit
failure)
All modes All modes Unavailable
Err15 Converter failure
(Memory
comparison
failure)
All modes All modes Unavailable
Err16 Converter failure
(Memory R/W
failure)
When power
is turned ON
When power is
turned ON
Unavailable
Err17 Converter failure
(Memory R/W
failure)
When power
is turned ON
When power is
turned ON
Unavailable
Err24
Temperature compensation range
exceeded
Out of 0 to 40
°C range
All modes <MEAS.> Available
Err25
Concentration upper limit setpoint
exceeded
When setpoint
is exceeded
All modes <MEAS.> Available
Types of <failure> to be detected include those which are only displayed without <FAIL> lamp
lighting and <failure> contact signal output.
These types of <failure> are shown in Table 5.16.
Table 5.16 <failure> Accompanied by Error Message Only
Error
Message
<failure> Contents Detecting Conditions
Operation in which the Error
is Detected
Err21 Zero point failure Out of -1.0 to 1.0 µA range Zero calibration
Err22 Sensitivity failure
Less than 50 % of reference
sensitivity
Span calibration
Err23 Response failure When setpoint is exceeded Zero and span calibration
Error Flow rate failure When six minutes is exceeded Measurement of metering
pump flow rate
not *1 Setpoint range exceeded
When the permissible range is
exceeded
Data setting operation
*1: For permissible range for exceeding the setpoint range, see Table 5.5 and others.
(9) <failure> Display/Contact Output Resetting (Function code “c”)
Once detected, <failure>s shown in Table 5.15 are not automatically reset even if the cause is
removed.
When failed parts are returned to normal, reset <FAIL> lamp lighting and <failure> contact signal
output through the following operations:
(a) Select function code “c" in <MAINT.> mode. → CL_Er
(Display)
(b) Press [ENT] key. →
(flashes once.)
• <FAIL> lamp extinguishes. When the <failure> contact signal is output, this output is
turned OFF.
If <FAIL> lamp again lights after an error is reset, it indicates that the failed part is not yet
restored. Take countermeasures again referring to the chapter 9 on troubleshooting.
14th Edition : Jul. 15, 2020