Emerson IM-106-5500 Manual Do Utilizador

IM-106-5500, Original Issue
August 2005

6-7

CCO 5500

Table 6-3.  Operational 

Problems

Incorrect normalizing 
parameter setting

Enter parameter mode 
and ensure all 
parameters are as 
required

Parameters 
correct

Proceed to next 
possible cause

Parameters 
incorrect

Enter correct 
parameters

Incorrect calibration 
(Set Cal value) zero 
gas level

Enter diagnostic mode 
and observe the Y (60) 
figure

1800 <Y <2010

Instrument OK - true 
level of gas in duct 
(output permanently 
zero)

Y <1800

Proceed to next 
possible cause

Detector levels low or 
saturated

Enter diagnostic mode 
and check the detector 
levels and saturation 
count

Detector levels 
OK

Proceed to next 
possible cause

Detector levels 
out of tolerance

Reconfigure the 
instrument and 
consult the 
fault-finding table 
again

Output circuitry failure

Enter setup mode 
(configure output and 
attempt to set zero and 
span

Output responds 
correctly

Reconfigure the 
instrument and 
consult the 
fault-finding table 
again

Output does not 
respond correctly

Replace signal 
processor

Fault condition exists

Enter diagnostic mode 
and check fault 
condition

Fault condition 
exists

Refer to Section 4, 
Fault Condition 

No fault condition

Proceed to next 
possible cause

Plant status contact in 
signal processor has 
been made

Check plant status 
input LED in signal 
processor

LED off

Operation correct - 
stable gas level

LED on

Plant status in use - 
instrument will not 
update until plant on