Rosemount TankRadar Rex DAU 2100, Service Manual

Page: 130 / 154

Rosemount Tank Radar Rex
Chapter 6 Troubleshooting
6-6
Service Manual
308012En, Ed.2
May 2013
Internal serial communication
error:
0 - No detected error No action required.
Internal serial communication
error:
1- Error detected Restart the DAU. Exchange
PCB: DMB for Slave DAU or
DXB for Independent DAU.
Internal serial communication
error:
3 - Internal bus failure. Restart the DAU. Exchange
PCB: DMB for Slave DAU or
DXB for Independent DAU.
Temperature measuring error:
0 - No detected error No action required.
Temperature measuring error:
1- Error in at least one sensor Watch display in mode 1 (if dis-
play is included) for blinking
value of the faulty sensor.
Temperature measuring error:
2 - Calibration error
Reference signals out of range Exchange the precision refer-
ence resistance. If problem per-
sists, then exchange PCB: DMB
for Slave DAU or DXB for Inde-
pendent DAU.
Temperature measuring error:
3 - Average error
Not any functioning non-blocked
sensor is within the product. Check if product level is below
the lowest functioning non-
blocked sensor.
Check that DAU receives a level
from the associated RTG.
Current input error (p for pres-
sure):
0 - No detected error No action required.
Current input error (p for pres-
sure):
1- Error in at least one sensor See items under “Current input
reading incorrect”.
DAU Display CAUSE ACTION