Endress+Hauser Proservo NMS5 Operating Instructions Manual page 86

10 Diagnosis and Troubleshooting
Diagnostic : LOCAL ERROR DEV1(2)
(FLASHING ON ANY
DISPLAY)
G5V4H9 = ON ?
Yes
Check HART bus wiring:
DEV to NMS cut or short ?
DEV (+)(-) to NMS (+)(-) ?
Voltage = DC16.5 - 25.5V ?
G5V4H9 = ON ?
Diagnostic : LOCAL Error NMT
(FLASHING ON ANY
DISPLAY)
Check G4V8H0 for NMT
Diagnostics codes, refer to
NMT Operating Manual.
Check HART bus wiring:
NRF to NMS cut or short ?
NMS (+)(-) to NMT (+)(-) ?
NMT to NMS cut or short ?
Voltage = DC16.5 - 25.5V ?
86
Meaning:
An error has occurred at the
HART device.
Set G5(6)V4H9 = ON
Check HART device
No
address with hand-held.
HART DEV1 = 4 ( xed)
HART DEV2 = 5 ( xed)
No
Refer to HART device
operating manual.
Meaning:
An error has occurred at the
NMT temperature sensor.
OK ?
No
Exchange electronics
module in NMT.
Diagnostic : LOCAL ERROR NRF
(FLASHING ON ANY
DISPLAY)
Check G3V6H1:
NRF >=v 1.82, CONTACT2
NRF < v 1.82, CONTACT1
Yes
No
G3V6H1 correct ?
Check HART bus wiring:
No
NRF to NMS cut or short ?
NMS (+)(-) to NRF (+)(-) ?
NMT to NMS cut or short ?
Voltage = DC16.5 - 25.5V ?
No
OK ?
Diagnostic : MEM ERROR
MEM. ERROR
YYMMDDhhmm TT ##
Diagnostic : MPU : RESET
MEM. ERROR
YYMMDDhhmm TT ##
Frequent ?
No
Noise, Isolate and eliminate
source of noise.
Proservo NMS5
Meaning:
An error has occurred at the
NRF tank side indicator.
Make correct setting at
G3V6H1.
OK ?
Exchange FCB module in
NRF.
Exchange POW module in
NRF
Exchange TCB module,
adjust Hall sensors,
recalibrate.
Meaning:
Power to the CPU module
fell below minimum value.
Exchange TCB module,
adjust Hall sensors,
recalibrate.
OK ?
No
Endress+Hauser