KROHNE CORIMASS MFM 4085 K/F Installation And Operating Instructions Manual page 87

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