EST EST3X - Analog data loop wiring problems

Chapter 7: Service and troubleshooting
EST3X Technical Reference Manual 215
Table 65: Signature Series mapping errors diagnostics
Problem
Suggested corrective action
The mapping command fai
led either because
the sensor did not draw current or it was not
possible to obtain stable mapping data from the
signaling line circuit
• Verify that wiring is correct
• Verify that devices are operational
• Review the Chain Response and Device
Response lists
on the Device Chains tab to
identify the failed devices
• Check for loose wiring connections at the
devices or T-taps
• Check for faulty device(s)
While mapping a chain from a device bac
k to
the
Signature loop controller, the chain was
built with holes in it
• Review the Chain Response and Device
Response lists
on the Device Chains tab to
identify the failed devices
• Compare the serial numbers in the Chain
Response and Device Response lists on
the Device Chains tab
with the actual wiring
to identify a conflict
M
ap tables are inconsistent • Upload the current map
• Compare the current map with the
expected map
• Write the map back to the loop controller
• Ensure loop wiring is correct
Th
e actual Signature data loop map does not
match the expected map
• Compare the current map with the
expected map
• Write the map back to the loop controller
• Ensure loop wiring is correct
Device address assignment failed
Review the serial number or address; if
missing, replace the device
The map in use has invalid data
(map
supervision failure)
Wait for automatic map reconstruction to
complete before continuing
Mapping supervision detected a change on the
loop
(a map rebuild was scheduled)
Wait for automatic map reconstruction to
complete before continuing
Mapping supervision detected the device
address or short address of the device being
supervised changed
(a map rebuild was
schedu
led)
Wait for automatic map reconstruction to
complete before continuing
The m
apping command failed because the
sensor did not draw current
, or it was not
possible to obtain stable mapping data from the
loop
(a map rebuild was scheduled)
• Wait for automatic map reconstruction to
complete before continuing
• Check for loose wiring
• Check for a defective device