User Manual

43
4.6 Status messages
ERROR
MESSAGES
TYPE COMMENT
SAMPLING Severe PLL out of range
SENSOR A Severe Sensor A voltage signal less than 5% of desired value
SENSOR B Severe Sensor B voltage signal less than 5% of desired value
RATIO A/B Severe One sensor signal much larger than the other
EEPROM FATAL Unable to save data in EEPROM. Hardware fault
SYSTEM FATAL Indicates software error, will always occur with
WATCHDOG
WATCHDOG Severe Reset due to SYSTEM error or temporary power supply
drop-off
NVRAM Severe NVRAM check sum error, previous data lost
DC A Severe max. DC voltage part of sensor A is larger than 20% of ADC
DC B Severe max. DC voltage part of sensor B is larger than 20% of ADC
NVRAM FULL Light NVRAM has exceeded its specified number of write
cycles
MASS FLOW Light Mass flow rate > 2 × nominal flow *
ZERO ERROR Light Mass flow rate at zero adjust is larger than > 20% of
nominal (100%) flow rate *
TEMPERATUR Light Temperature > outside operating range
STRAIN Light Strain out of operating range
I.SAT Output Current output saturated **
FREQ.SAT Output Frequency output saturated **
ALARM.OUT.A Output Process alarm limit check exceeded **
ROM DEF Light EEPROM check sum error, defaults loaded from ROM
TOTAL O/F Light Custody transfer only. Mass total has overflowed the
display, i.e. it has gone from 99999999 → 00000000
TEMP.CUST Light Custody transfer only. Operating temperature has drifted
by more than ±30°C from the zero calibration temperature
POWER.FAIL Light Custody transfer only. There has been an interruption of
power to the converter.
* Actual mass flow rate is too big or manual zero offset PUTIN.VAL in Fct. 1.1.1 was
programmed incorrectly.
** Change output range to avoid saturation.