Rockwell Automation T80020 Application Note Diagnostic Procedures - Manual (Page 60)

Trusted TM
AN-T80020 Diagnostics Procedure
Issue 12 Feb 11 AN-T80020 60
OFIU_DATA_FAULT
0x67nn
Modules:8448
Subcode:nn = channel, 0x00 to
0x27 (1 to 40)
This test provides a high level of integrity for all ADC data
(voltage/current monitoring and HKAD). It detects faults in the ADCs
(excluding the input multiplexer) and the data path between the ADCs
and HIU RAM. This test is necessary on an 8448 because the voltage
and current monitoring is used for inputs. Return the module for repair.
Action:Slice OFFLINE
SFIU_RELAY_CONTACT_
XTALK_FAULT
0x67mn
Modules:8442
Subcode: mn = quadrant (0 to 3),
output (0 to 5) This test detects crosstalk between relay contacts, group to group.
Replace and return the Speed Output FTA when possible.
Action:Slice fault
FIU_HKAD_ERR
0x68mn
Modules:All
Inputs:
680n, n = HKAD channel, 0 to 7
(see right)
Outputs including 8480 but not
8442, 8472:
68mn, m = output group (0 to 3
for 8471, 0 to 4 for others),
n = HKAD channel, 0 to 7 (see
right)
8472: 68m0, m = quadrant (0 to
3)
8442:
m=0: quadrant current,
n=quadrant (0 – 3)
m=1: 24v 1, n=group (0 – 2)
m=2: 24v 2, n=group (0 – 2)
m=3: 15v 1, n=group (0 – 2)
m=4: 15v 2, n=group (0 – 2)
Field interface housekeeping measurement out of range. This test
verifies min/max limits on all field housekeeping A/D channels.
The fault can be triggered by noise but is usually indicating a module
fault.
For 8442, check the field supply voltage, else return the module for
repair.
For 8461, hardware revision L, see TN20049.
In all other cases, return the module for repair.
Action:Slice OFFLINE except 8472 (slice fault)
Input HKAD channels 0 to 7 in order: Condensation, FIU internal supply
voltage, DAC_X2, FIU unregulated input voltage, FIU board
temperature, DAC_X2, DAC_X3, FIU internal supply current.
Output (except 8480) HKAD channels 0 to 7 in order: CHFSS bias
voltage, GFSS bias voltage, Field zero volts voltage, FIU internal supply
voltage, Field supply voltage, FIU board temperature, FIU unregulated
input voltage, FIU internal supply current.
8480 HKAD channels 0 to 7 in order: CHFSS bias voltage, GFSS bias
voltage, Field zero volts voltage, FIU internal supply voltage, FIU board
temperature, Field supply voltage below ‘top rail’, FIU unregulated input
voltage, FIU internal supply current.
Note that field voltages are measured downwards from the group
common ‘top rail’ so some numbers are negative; see AN-80004.
On the 8472, this test checks the current drawn by the field interface
unit, divided into four quadrants. The 8442 also gives quadrant current
if subcode m is 0.