Teledyne 9060Z - Zirconium oxide flue gas oxygen analyzer - Manual (Page 45)

Model 9060Z Manual
45
9. ALARMS
The 9060Z has 4 alarm relays and a built in alarm annunciator. If an alarm occurs, the ALARM light will
flash. To find out what the alarm is, press the ALARM up key.
When the ALARM up key has been pressed, the transmitter goes into the alarm display mode. In this
mode some of the keys take on a special function.
Key text RUN mode ALARM mode
SETUP / RUN * Return to RUN mode
DISPLAY / FUNCTION up * Next alarm
DISPLAY / FUNCTION down * Last alarm
ALARM / OPTION up Enter ALARM display mode Alarm activated time
ALARM / OPTION down Enter ALARM log mode Alarm acknowledged time
ALARM ACCEPT / ENTER * Acknowledge alarm
GAS 1 PURGE 1 / SENS IMP * *
GAS 2 PURGE 2 / AUTO CAL * *
* This key is not used in the ALARM mode
The common alarm relay is used to monitor faults within the transmitter and the probe. The other
three alarm relays relate to the process gas. All relays have user defined actions.
If one of the alarm events is removed from the common alarm using COMMISSIONING menu function
#49, then this alarm event can be programmed for one of the other 3 alarm relays.
When the alarm mode has been entered, the SETUP light flashes once a second until the SETUP key is
pressed to return the transmitter to RUN mode.
All relays have fail‐safe alarm contacts. That is –
When the transmitter is turned off the contacts are open circuit
When the transmitter is on but there are no alarms the contacts will be closed
When there is a current unaccepted alarm event the contacts will be open circuit
When there is a current accepted alarm event the state of the contacts will depend on the
selection in the commissioning menu #50. See chapter 7.2.22, Operation of the alarm relay when
an alarm is accepted.
All alarms drive the alarm light on the front door.
The light will be off if there are no alarms current
The light will flash if there is a current alarm that has not been acknowledged
The light will be on steady if there are current alarm(s) that have not been cleared
The light will flash faster as more alarms occur
9.1 COMMON ALARMS
The events that drive the common alarm are –
1. ‘Probe 1 Heater Fail’
2. ‘Probe 2 Heater Fail’
A heated probe (model 9060H) has been turned on for more than 20 minutes but is still not up to
650°C (1200°F) or the probe temperature falls below 650°C.
3. ‘Probe 1 High Impedance’