TROUBLESHOOTING
TROUBLESHOOTING HARDWARE FAILURES
I-E96-322A
6 - 7
hardware troubleshooting information. The first part of this
section covers off-line failures. If the failure is preventing cali-
bration, tuning or module start-up, refer to
and the steps of the troubleshooting procedure. The
second part covers failures during operation. If the failure
occurs during operation, refer to
and the
steps of the troubleshooting procedure.
NOTE: Troubleshooting involves physical contact with the system,
including the handling of boards with electrostatic sensitive devices.
To avoid creating additional problems while troubleshooting, always
use Bailey’s field static kit (part number 1948385_1) when working
with the modules. The kit is designed to connect a technician and
the static dissipative work surface to the same ground point to pre-
vent damage to the modules by electrostatic discharge.
Table 6-3. Function Code 150 Module Problem Report
Error Type
Module Error
Corrective Action
1 - No
response/
wrong type
Any I/O expander bus communication
failure. Error will also be indicated by
FC 150 output N+11.
Remove IMHSS03 and reinsert. If error recurs,
replace IMHSS03.
Hardware. Error will also be indicated
by FC 150 output N+10.
1. Error may be isolated by running module
diagnostics.
2. Replace IMHSS03.
Table 6-4. Function Code 150 Output Errors
Output Block
Error Description
Corrective Action
N+2
Actuator position, valve
contingency error.
Check field connections. Check the valve.
N+3
A/D or D/A hardware error.
1. Error may be isolated by running module diagnostics.
2. Replace IMHSS03.
N+4, N+5
LVDT error.
Check LVDT and LVDT field connections. If error persists,
replace IMHSS03.
N+6, N+7
Servo output error.
Check servo field connections and servo valve. If error per-
sists, replace IMHSS03.
N+10
Module hardware error.
1. Error may be isolated by running module diagnostics.
2. Remove IMHSS03. Insert the module. If error recurs,
replace the module.
N+11
I/O module communication/
watchdog error. Any I/O
expander bus communication
failure.
1. Check I/O expander bus dipshunts.
2. Remove IMHSS03. Insert the module. If error recurs,
replace the module.