Emerson 4000 manual Led, Flashes Status MA Line Fault Clearing

Instruction Manual

IB-106-340 Rev. 3.0 December 2003

Oxymitter 4000

Table 8-1. Diagnostic/Unit Alarm Fault Definitions – Membrane Keypad Only

					Self-
LED	Flashes	Status	4-20 mA Line	Fault	Clearing
HEATER T/C	1	OPEN	Dependent on position 3 of SW2*	1	NO
	2	SHORTED	Dependent on position 3 of SW2*	2	NO
	3	REVERSED	Dependent on position 3 of SW2*	3	NO
	4	A/D COMM ERROR	Dependent on position 3 of SW2*	4	NO
HEATER	1	OPEN	Dependent on position 3 of SW2*	5	NO
	2	HIGH HIGH TEMP	Dependent on position 3 of SW2*	6	NO
	3	HIGH CASE TEMP	Dependent on position 3 of SW2*	7	YES
	4	LOW TEMP	Dependent on position 3 of SW2*	8	YES
	5	HIGH TEMP	Dependent on position 3 of SW2*	9	YES
O2 CELL	1	HIGH mV	Dependent on position 3 of SW2*	10	YES
	3	BAD	Track O2	11	YES
	4	EEPROM CORRUPT	Dependent on position 3 of SW2*	12	NO
CALIBRATION	1	INVALID SLOPE	Track O2	13	YES
	2	INVALID CONSTANT	Track O2	14	YES
	3	LAST CALIBRATION	Track O2	15	YES
		FAILED
	**	CALIBRATION RECOM-	Track O2		YES
		MENDED

*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” will require recycling of power to the electronics.

**The CALIBRATION RECOMMENDED alarm flashes the Calibration Recommended alarm LED on the opera- tor’s keypad.

Table 8-2. Diagnostic/Unit Alarm Fault Definitions – LOI

		Fault	Self-
Message	Status	Number	Clearing
O2 T/C OPEN	HEATER T/C OPEN	1	NO
O2 T/C SHORTED	HEATER T/C SHORTED	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		NO
	DETECTED ON POWER UP

8-4 Troubleshooting Rosemount Analytical Inc. A Division of Emerson Process Management