Honeywell 900U02-0100 - Page 208

194 ControlEdge HC900 Process & Safety Controller User and Installation Manual Revision 10
May 2019
Number
of Red
Strobes
Possible Causes
Lead and/or Reserve
Controller Action(s)
User Action
Honeywell OI
Indication
HCDesigner/HC
Utilities
Indication
6
High temperature
condition in a
Scanner 2 rack has
been detected.
1. Associated AI blocks that are
configured as T/Cs set their fail
pin on, their warn pin off, and
their output pin to the failsafe
value.
2. Associated AI blocks that are
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.
3. Associated rack monitor
block’s module fail pin is
turned on.
4. Associated rack monitor
block’s RACK OK pin is turned
off.
5. Associated rack monitor
block’s HITEMP pin is turned
on.
6. ASYS and FSYS blocks’
HITEMP pins are turned on.
7. ASYS and FSYS blocks’ HW
OK pins are turned off.
6
Scanner 2 has a
CPU or Memory
diagnostic.
1. Associated rack monitor
block’s RACK OK pin is turned
off.
2. ASYS and FSYS blocks’ HW
OK pins are turned off.
See CPU or
MEMORY in
the associated
rack’s “Rack
Diagnostics
Overview”
display.
See CPU or
Memory in
“Rack
Diagnostics”
dialog box.
7
A Scanner 2 rack
has a bad power
supply.
1. Associated rack monitor
block’s RACK OK pin is turned
off.
2. ASYS and FSYS blocks’ HW
OK pins are turned off.
Locate the Scanner 2 that
indicates a bad power-supply
diagnostic, and replace the
defective supply.
See POWER
SUPPLY
DIAGNOSTICS
in the
associated
rack’s “Rack
Diagnostics
Overview”
display.
See Power
Supply
Diagnostics in
“Rack
Diagnostics”
dialog box.