Emerson Process Management IM-106-340 Diagnostic/Unit Alarm Fault Definitions LOI

Oxymitter 4000

Instruction Manual

IM-106-340, Rev. 4.0 May 2006

Table 8-1. Diagnostic/Unit

Alarm Fault Definitions -

Membrane Keypad Only

LED	Flashes	Status	4-20 mA Line	Fault	Recoverable
HEATER T/C	1	Open	3.5 mA (factory default)*	1	No
	2	Shorted	3.5 mA (factory default)*	2	No
	3	Reversed	3.5 mA (factory default)*	3	No
	4	A/D Comm Error	3.5 mA (factory default)*	4	No
HEATER	1	Open	3.5 mA (factory default)*	5	No
	2	High High Temp	3.5 mA (factory default)*	6	No
	3	High Case Temp	3.5 mA (factory default)*	7	Yes
	4	Low Temp	3.5 mA (factory default)*	8	Yes
	5	High Temp	3.5 mA (factory default)*	9	Yes
O2 CELL	1	High mV	3.5 mA (factory default)*	10	Yes
	3	Bad	Track O2	11	Yes
	4	EEprom Corrupt	3.5 mA (factory default)*	12	No
CALIBRATION	1	Invalid Slope	Track O2	13	Yes
	2	Invalid Constant	Track O2	14	Yes
	3	Last Calibration Failed	Track O2	15	Yes
	**	Calibration Recommended	Track O2		Yes

*Critical alarm conditions will render the O2 measurement as unusable, and any of these events will cause the 4-20 mA signal to go to a user-selectable limit of 3.5 mA or 21.6 mA (position 3 of SW2). Factory default value is 3.5 mA. Alarms which are not self-clearing (Self-Clearing = NO) will require a reset. Perform the Reset Procedure in Section 3: Configuration of Oxymitter 4000 with Membrane Keypad to continue operation.

**The CALIBRATION RECOMMENDED alarm flashes the Calibration Recommended LED on the operator's keypad.

Table 8-2. Diagnostic/Unit

Alarm Fault Definitions - LOI

Message	Status	Fault Number	Self Clearing
O2 T/C OPEN	Heater T/C Open	1	No
O2 T/C SHORTED	Heater T/CShorted	2	No
O2 T/C REVERSED	Heater T/C Polarity Reversed	3	No
ADC ERROR	A/D Comm Error	4	No
O2 HEATER OPEN	O2 Heater Open	5	No
VERY HI O2 TEMP	Very High Process Temperature	6	No
BOARD TEMP HI	Electronics Overheated	7	Yes
O2 TEMP LOW	Low Process Temperature	8	Yes
O2 TEMP HI	High Process Temperature	9	Yes
O2 CELL OPEN	O2 Cell Open	10	Yes
O2 CELL BAD	O2 Cell Failed	11, 13, 14	Yes
EEPROM CORRUPT	EEprom Failed	12	No
CALIB FAILED	Last Calibration Failed	15	Yes
LINE FREQ ERROR	Incorrect Input Line Frequency Detected on Power Up		No

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