Table of Contents
Number
Possible Causes
of Red
Strobes
6
High temperature
condition in a
Scanner 2 rack has
been detected.
6
Scanner 2 has a
CPU or Memory
diagnostic.
7
A Scanner 2 rack
has a bad power
supply.
194
ControlEdge HC900 Process & Safety Controller User and Installation Manual
Lead and/or Reserve
Controller Action(s)
Associated AI blocks that are
1.
configured as T/Cs set their fail
pin on, their warn pin off, and
their output pin to the failsafe
value.
Associated AI blocks that are
2.
configured as T/Cs set their IO
status to either:
"CJ High Temperature" if one
of the two CJs on an AI card is
indicating a temperature
greater than 70 degrees C
"CJ Failure" if both CJ
sensors are failing to convert.
Associated rack monitor
3.
block's module fail pin is
turned on.
Associated rack monitor
4.
block's RACK OK pin is turned
off.
Associated rack monitor
5.
block's HITEMP pin is turned
on.
ASYS and FSYS blocks'
6.
HITEMP pins are turned on.
ASYS and FSYS blocks' HW
7.
OK pins are turned off.
Associated rack monitor
1.
block's RACK OK pin is turned
off.
ASYS and FSYS blocks' HW
2.
OK pins are turned off.
Associated rack monitor
1.
block's RACK OK pin is turned
off.
ASYS and FSYS blocks' HW
2.
OK pins are turned off.
User Action
Locate the Scanner 2 that
indicates a bad power-supply
diagnostic, and replace the
defective supply.
Honeywell OI
HCDesigner/HC
Indication
Utilities
Indication
See CPU or
See CPU or
MEMORY in
Memory in
"Rack
the associated
rack's "Rack
Diagnostics"
Diagnostics
dialog box.
Overview"
display.
See POWER
See Power
SUPPLY
Supply
DIAGNOSTICS
Diagnostics in
"Rack
in the
Diagnostics"
associated
rack's "Rack
dialog box.
Diagnostics
Overview"
display.
Revision 10
May 2019
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