pg. 51
Trouble shooting
Symptom
Possible Cause/Remedy
No digital communication
- Check electrical connections (3 wires from transducer to
communication equipment)
- Transducer and communication equipment baud rate
matches
- Use of incorrect transducer address. Try address 254
- Attention characters missing (@)
- Termination characters missing (;FF)
NAK180 is received when
transmitting setpoint commands
- The transducer setup is locked. Refer to disable lock
procedure page 23.
Incorrect pressure value
- Other gas present than transducer gas setting or trace of
gas.
- Contaminated sensor. Transducer repair required.
- Corroded sensor. Transducer repair required.
Incorrect pressure value at low
pressure.
- Contaminated sensor. Transducer repair required.
- Corroded sensor. Transducer repair required.
- Incorrect VAC adjustment has been executed.
- Transducer exposed to heat or cooling air stream.
Incorrect pressure value at high
pressure.
- Contaminated sensor. Transducer repair required.
- Corroded sensor. Transducer repair required.
- Incorrect ATM adjustment has been executed.
- Other gas or gas trace present than transducer gas setting.
Set point relay does not trip
- Setpoint not enabled.
- Setpoint value not set to proper value.
- Setpoint direction is different than the user expects.
- Check electrical connection.
- Check part number to see if transducer has setpoint relays.
No analog output
- Power supply turned off.
- Check electrical connections.
Status LED illuminating red
- Defective sensor element or electronics. Refer to Service
and Repair page 52.
