MA-014 - TRANSFIX DGA 500 User Guide – Rev 1.1
13-Oct-15
Page 17 of 28
6.2
Error Codes
A list of error codes that can appear on the LCD display panel and their meaning are
listed in Table 6—1. All the service alarm error codes are accompanied by flashing of the
green Power/Service LED that is visible on the front door of the product.
Note: Error codes are offset by 1 from the MODBUS® register bit numbers.
Note: This information pertains to the following firmware versions — TransfixHost 1.14.3 in combination
with PGA 12.3.81.
Table 6—1: Errors
Code Error
Description
PGA Connection Error
The host board (the processor that the customer
interfaces with) has lost communications with the Photo-
acoustic Gas Analyzer (PGA). Therefore the host board
cannot send a signal to the PGA to initiate a
measurement. The product will remain in Standby mode
with this error continuously displayed.
Timeout
The product has exceeded a set time limit to perform an
action. The product will abort the measurement.
00
Missing mains input
Incoming AC voltage is outside of expected range. The
product will complete the measurement. This alarm is
obsolete and has been disabled.
01
PGA power supply voltage too low
Voltage that powers the PGA has dropped below the
expected voltage. The product will complete the
measurement. The final values may not be reliable.
02
PGA chopper frequency outside range
The infrared energy is being pulsed at a frequency outside
of the expected frequency. The product will abort the
measurement.
03
PGA IR-source outside range
The infrared energy source feedback is outside of the
expected range indicating the infrared energy source is
either too weak or too strong. The product will abort the
measurement.
04
Gas flow lower than limit
The flow of gas internal to the product is lower than
expected. The product will complete the measurement.
The final values may not be reliable.
05
Background noise/vibration too high
The PGA has detected excessive noise, which may be
mechanical or electrical in nature. The product will
complete the measurement. The final values may not be
reliable.
06
Microphone test failed
The signal from the microphone(s) is (are) outside of the
expected range. The product will complete the
measurement. The final values may not be reliable.
07
Not level sensor 1 pulses (level)
Not used on the TRANSFIX family.
08
Not level sensor 3 (drain)
The product is testing the functionality of the drain level
sensor during fault debugging and will trigger this service
alarm if no oil is detected when oil is expected. The
product will abort the measurement.
09
Fill level shows Oil
The product is expecting the gas extraction chamber
(headspace) to be empty of oil and oil is detected at the
full level sensor. The product will abort the measurement.
10
Over Fill shows Oil
The product has detected that too much oil is in the
headspace. The product will abort the measurement.
11
PGA Air temperature outside limits
The internal temperature of the product is outside the
expected range. The product will abort the measurement.
