Troubleshooting Guide - Emerson 5301HxxxxxxxxxxxxxxZZ Series Reference Manual

Reference Manual
00809-0100-4530
Table 7-16: Troubleshooting the AI Block
Symptom
Mode will not leave OOS
Process and/or block alarms
will not work
Value of output does not
make sense
Cannot set HI_LIMIT,
HI_HI_LIMIT, LO_LIMIT, or
LO_LO_LIMIT Values
7.6

Troubleshooting guide

If there is a malfunction despite the absence of diagnostic messages, see
information on possible causes.
Reference Manual
(continued)
Possible causes
Target mode not set
Configuration error
Resource block
Schedule
Features
Notification
Status Options
Linearization Type
Scaling
Scaling
Service and troubleshooting
Recommended actions
Set target mode to something other than
OOS.
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:
CHANNEL must be set to a valid value and
cannot be left at the initial value of 0.
XD_SCALE.UNITS_INDX must match the
units in the transducer block channel value.
L_TYPE must be set to Direct, Indirect, or
Indirect Square Root and cannot be left at
the initial value of 0.
The actual mode of the Resource block is
OOS. See Resource Block Diagnostics for
corrective action.
Block is not scheduled and therefore
cannot execute to go to Target Mode.
Schedule the block to execute.
FEATURES_SEL does not have Alerts
enabled. Enable the Alerts bit.
LIM_NOTIFY is not high enough. Set equal
to MAX_NOTIFY.
STATUS_OPTS has Propagate Fault
Forward bit set. This should be cleared to
cause an alarm to occur.
L_TYPE must be set to Direct, Indirect, or
Indirect Square Root and cannot be left at
the initial value of 0.
Scaling parameters are set incorrectly:
XD_SCALE.EU0 and EU100 should match
that of the transducer block channel value.
OUT_SCALE.EU0 and EU100 are not set
properly.
Limit values are outside the
OUT_SCALE.EU0 and OUT_SCALE.EU100
values. Change OUT_SCALE or set values
within range.
Table 7-17
April 2019
for
183