MSA Ultima X Series Installation & Maintenance Instructions Manual page 39

OPERATION LEDs
GREEN RED
NORMAL ON OFF
steady
ALARMING OFF Flashing
FAULT OFF ON
steady
POWER OFF ON
UP (HART steady
Version)
POWER OFF ON
UP steady
(Non-HART
Version)
COUNT OFF ON steady ALERT option
DOWN (All
Versions)
SENSOR OFF ON steady 3.0 mA if Swap Delay
MISSING/
COUNT-
DOWN
SENSOR OFF ON steady 3.75 mA if cal signal
CAL
CAL OFF ON steady 4 mA if 4 mA calibration
4-20
CAL FAULT OFF ON steady Gas value
UNDER- OFF ON steady 3.0 mA if gas value
RANGE
OVER- ON OFF
RANGE/ steady 4
LOC
4 to 20 mA
Gas value
Gas value
3.0 mA
<3.75 mA
<3.1 mA
1
disabled;
21.0 mA for O 2 ;
3.75 mA for others
ALERT option 1 enabled:
3.75 mA for all
timeout 2 expired,
Swap Delay 3 disabled
or FAULT
Previous gas value
3
if Swap Delay enabled
and Swap Delay timeout
not expired
enabled and ALERT
option 1 enabled;
gas value if cal signal
disabled
21.0 mA for O 2 if
cal signal enabled and
ALERT option 1 disabled
selected
20 mA if 20 mA
calibration selected
0 or less;
gas value otherwise
4 21.0 mA
FAULT RELAY
Energized
Energized
De-energized
De-energized
De-energized
Energized
if ALERT option disabled
De-energized
if ALERT option enabled 3
De-energized if Swap Delay
timeout 2 expired, Swap
Delay 3 disabled or FAULT
Energized if Swap Delay
enabled and Swap Delay
2 timeout 2 not expired
Energized if ALERT
option disabled
De-energized if ALERT
1
option enabled
Energized if ALERT option
disabled
De-energized if ALERT
1
option enabled
De-energized two seconds
every minute
De-energized
Energized
2-3
3