Yokogawa IR400 - Manual (Page 92)

8 - 1
IM 11G02N01-01E
8.1 Error message
If errors occur, the following contents are displayed.
When errors No. 1 and No. 10 occur, analyzing block error contact output is closed.
When errors No. 4 to No. 9 occurs, calibration error contact output is closed.
Screen display and operation at the occurrence of error
In case of Error No. 1 to No. 4, No. 6, No. 8 to No. 10
Motor rotation detection signal
faulty Error No.1 • Motor rotation is faulty or stopped.
• Motor rotation detector circuit is faulty.
Note) Sector motor is a consumption part.
It is recommendable to exchange the
motor once two years.
Measured values fluctuate too much
during zero and span calibration. Error No.8 • Calibration gas is not supplied.
• Time for flowing calibration gas is short.
Calibration is abnormal during auto
calibration. Error No.9 • Error corresponding to No. 4 to No. 8
occurred during auto calibration.
Output cable connection is
improper. Error No.10 • Wiring is detached between analyzer and
interface module.
• Wiring is disconnected between analyzer and
interface module.
Span calibration is not within the
allowable range. Error No.6
Amount of span calibration
(difference between indication value
and calibrated concentration) is over
50% of full scale. Error No.7
• Span gas is not supplied.
• Calibrated concentration setting does not
match cylinder concentration.
• Zero calibration is not performed normally.
• Span is deflected much due to dirty cell.
• Detector sensitivity has deteriorated.
Zero calibration is not within. Error No.4
Amount of zero calibration
(indication value) is over 50%
of full scale. Error No.5
• Zero gas is not supplied.
• Zero is deflected much due to dirty cell.
• Detector is faulty.
• Optical balance is maladjusted.
Error display Error contents Probable causes
C H O 2
0-25 vol%
2 1 0 0 .
C H CO
0-100 ppm
0 0
C H CO 2
0-10 vol%
0 0 0 0
C H SO 2
0-100 ppm
C H NO 2
0-25 ppm
0 0 8
.
.
.
. Error No.9
1 3 6
ENT
ESC
ESC
ESC
• Press the key to delete the error display.
• If the key is pressed without removing
the cause of an error, the error will be
displayed again.
Measurement screen
• When more than one error occurs, pressing
the key moves to another error display.
Display of error contents
8. TROUBLE SHOOTING FOR ANALYZER