Sps 4000 Troubleshooting - Emerson Oxymitter 5000 Instruction Manual

Instruction Manual
IB-106-350 Rev. 1.2
April 2001
Install all protective equipment covers
and safety ground leads after trouble-
shooting. Failure to replace covers
and ground leads could result in seri-
ous injury or death.
5-5

SPS 4000 TROUBLESHOOTING

Use the CAL FAIL and IN CAL relay outputs to
identify possible SPS 4000 faults.
a. If a calibration was not successfully com-
pleted, the SPS 4000 sends a CAL FAIL
contact indication to the control room. To
determine if the SPS 4000 caused the failed
calibration, go to the Oxymitter 5000 site to
view the keypad. Or, access the Oxymitter
via fieldbus.
1. If no alarms are indicated on the key-
pad or via fieldbus, the calibration did
not fail because of an Oxymitter 5000
fault. Therefore, a calibration gas flow
problem occurred. Refer to Table 5-2
or Figure 5-16 to troubleshoot the SPS
4000.
2. If the LAST CAL FAILED alarm is indi-
cated on the keypad or via fieldbus, the
failure is due to either a bad Oxymitter
5000 cell or a calibration gas flow
problem.
(a) Verify your calibration setup per
paragraph 4-2 in Section 4,
5-18 Troubleshooting
MAINTENANCE AND SERVICE,
Also, verify your calibration gas
setup.
(b) Perform another calibration and
monitor the process. If the calibra-
tion fails before both calibration
gases finish sequencing, a gas
flow problem exists. Refer to Table
5-2 or Figure 5-16 to troubleshoot
the SPS 4000.
If the calibration setup is correct
and the Oxymitter 5000 indicates
an invalid slope fault (fault 12) be-
fore the gases are purged and a
last calibration failed fault (fault 14)
after the gases are purged, replace
the Oxymitter 5000 cell per para-
graph 4-8 in Section 4, MAINTE-
NANCE AND SERVICE.
b. If a semi-automatic or manual calibration is
being performed but no 5-30 VDC relay
output contact (IN CAL or CAL FAIL) is be-
ing received by the control room, the inter-
face board relays are malfunctioning.
Replace the interface board per paragraph
1-1a.
If the unit is performing frequent auto-
calibrations, investigate at the Oxymit-
ter 5000 site or via fieldbus. This
condition may indicate an aging cell in
the Oxymitter 5000.
Rosemount Analytical Inc. A Division of Emerson Process Management
Oxymitter 5000
NOTE