Table of Contents
Advertisement
3.5.10 Selecting Fan Relay Latching Option – "FrL"
To select the Fan Relay Latching Option, in normal mode, push the Next button to get to "Con" or the Configuration menu. Then push
the Enter button to enter the Con menu. The tenth selection is the "FrL" or Fan Relay Latching Option. Push Next nine times to get to
"FrL" then Enter. If latching is "OFF" push Next to turn it to "ON" (flashing) then push Enter to confirm the change (solid) and push
Enter again to return to "FrL" in the Con menu. Push Next until "End" is displayed then push Enter to get back to normal operation.
3.5.11 Selecting Trouble Fan Setting Option – "tFS"
To select the Trouble Fan Setting Option, in normal mode, push the Next button to get to "Con" or the Configuration menu. Then
push the Enter button to enter the Con menu. The eleventh selection is the "tFS" or Trouble Fan Setting Option. Push Next ten times
to get to "tFS" then Enter. If Trouble Fan Setting is "OFF" push Next to turn it to "ON" (flashing) then push Enter to confirm the change
(solid) and push Enter again to return to "tFS" in the Con menu. Push Next until "End" is displayed then push Enter to get back to
normal operation.
3.5.12 Selecting 4-20mA Output Option – "420"
To select the 4-20mA Output Option, in normal mode, push the Next button to get to "Con" or the Configuration menu. Then push the
Enter button to enter the Con menu. The twelfth selection is the "420" or 4-20mA Output Option. Push Next eleven times to get to
"420" then Enter. If the 4-20mA is "On" push Next to turn it to "OFF" (flashing) then push Enter to confirm the change (solid) and push
Enter again to return to "420" in the Con menu. Push Next until "End" is displayed then push Enter to get back to normal operation.
3.6 Onboard Diagnostics
The CD-6"x" monitors all critical functions of the unit through software diagnostics that continuously test and verify unit operations. If a
problem is found, the unit will switch to a fail-safe/error mode or trouble condition. In this error mode, the Alarm relay will be activated,
the 4-20 mA current loop will go to 24 mA, the unit will display the error code, the green status indicator LED light will flash and the
buzzer will chirp intermittently. The Fan relay will also engage if the Trouble Fan Setting Option is set to "ON". This is a safety
precaution. To clear this mode, simply turn off power to the unit for a few seconds or push the ENTER/TEST switch (inside the unit).
This will cause the unit to restart the 1-minute self-test cycle.
3.6.1
The 4-20 mA signal can be used for troubleshooting:
0 mA is most likely a connection problem
4-20 mA is normal gas reading range (0-5000 ppm)
24 mA indicates a Trouble condition
3.6.2
Error Codes
t001 - Trouble with sensor signal
t002 - Temperature compensation failed
t004 - EEPROM bad checksum
t008 - IR lamp trouble
t010 - Bad EEPROM
t020 - Bad calibration
t040 - Factory calibration failure
t080 - ADC trouble
t100 - Under range
t200 - Sensor expired
t400 - Pressure sensor trouble
t800 - PCBA not tested
If the error mode repeats frequently, check for continuous power and proper voltage. If power is not the problem and a unit has
repeating error conditions, it may need to be returned to Macurco for service, per these User Instructions.
If the error mode indicates "Sensor expired" see section
4.1 End-of-life Signal
of these User Instructions.
15
Advertisement
Table of Contents
