Endress+Hauser Proservo NMS5 Operating Instruction page 89

Proservo NMS5
Message
RAM FAILURE CPU RAM failure
ROM ERROR EEPROM
SIFA ERROR Error between communication board
and CPU board for digital output.
TEMP BELOW RANGE Indicates the measured temperature
data is below the fixed range of the
NMT temperature sensor.
TEMP COM OPEN Indicates an open common line in the
NMT temperature sensor
TEMP COM SHORT Indicates a shorted common line in the
NMT temperature sensor
TEMP OVER RANGE Indicates the measured temperature
data is higher than the fixed range of
the NMT temperature sensor.
UNDERTENSION The tension on the measuring wire falls
below the lower limit set at
position GVH163 "UNDER TENS. SET."
WIRE CALIB ERROR The deviation of automatic wire
calibration exceeds its set limit.
Z PHASE NO INPUT The input of the Z phase signal from
the encoder is not available.
MPU:XXXX* CPU error
(XXXX=text)
OPE.CODE ERROR An illegal operation command is
accessed.
LCD CHECK Error between LCD (touch control) unit
and CPU board for digital
output.
GAUGE TEMP. The temperature inside the gauge
exceeds the limit.
DRIVER ERROR A motor driver error has occurred
Endress+Hauser
Cause
These error histories are available (Erroneous Message) at position GVH037.
Remedy
Consult E+H Service.
Replace the CPU board. Consult E+H service.
Check if the measuring wire is cut or the displacer is lost. In
this case, check the installation of the NMS5.
Check wire and wire drum.
Replace the detector unit. Consult E+H
Service.
The error might happen occasionally and might be registered
in GVH037 (Erroneous Message).
However, it is normally negligible. If it occurs frequently,
then consult E+H Service.
If the message occurs frequently, then consult E+H Service.
Replace the touch control.
Check if the ambient temperature stays within the limit.
If the application is a high temperature tank, then take
measures to avoid heat transfer from the tank to NMS5.
Consult E+H Service
11 Diagnosis and troubleshooting
Error Code
106, 112
132
114
102
115
121
89