Emerson Rosemount OCX 8800, Инструкция по эксплуатации

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Section 7: Foundation
Fieldbus
April 2017
Instruction Manual
IM-106-880C, OI
14
8
Troubleshootin
g
7.12.13 Troubleshooting
Refer to Table 7-30 to troubleshoot any problems that you encounter.
Table 7-30 Troubleshooting
Mode will not leave
OOS 1. Target mode not set
2. Configuration error
3. Resource block
1. Set target mode to something other than OOS.
2. BLOCK_ERR will show the configuration error bit set. The
following are parameters that must be set before the block is
allowed out of OOS:
a.
BYPASS must be off or on and cannot be left at initial value of 0.
b. OUT_HI_LIM must be less than or equal to OUT_LO_LIM.
c. SP_HI_LIM must be less than or equal to SP_LO_LIM.
3. The actual mode of the Resource block is OOS. See Resource
Block Diagnostics for corrective action.
4. Block is not scheduled and therefore cannot execute to go to
Target Mode. Schedule the block to execute.
Mode will not leave
IMAN
4. Schedule
1.
Back Calculation 1. BKCAL_IN
a.
The link is not configured (the status would show “Not
Connected”).Configure the BKCAL_IN link to the downstream
block.
b.
The downstream block is sending back a Quality of “Bad” or a
Status of “Not Invited”. See the appropriate downstream block
diagnostics for corrective action.
Mode will not change
to
AUTO
Mode will not change
to CAS
1. Target mode not set
2. Input
1. Target mode not set
2. Cascade Input
1. Set target mode to something other than OOS.
2. IN
a. The link is not configured (the status would show “Not
Connected”). Configure the IN link to the block.
b.
The upstream block is sending back a Quality of “Bad” or a Status
of “Not Invited”. Seethe appropriate upstream blockdiagnosticsfor
corrective action.
1.
Set target mode to something other than OOS.
2. CAS_IN
a. The link is not configured (the status would show “Not
Connected”). Configure the CAS_IN link to the block.
b.
The upstream block is sending back a Quality of “Bad” or a Status
of “Not Invited”. See the appropriate up stream block diagnostics
for corrective action.
Symptom Possible Causes Corrective Action