Emerson FB1200 - Page 90

Emerson FB1200 Flow Computer Instruction Manual
D301782X012
March 2019
84 Service and Troubleshooting
Table 5-1: LED Descriptions
LED
Color/State
Meaning
Link LED
GREEN
An active wired Ethernet connection exists.
Otherwise it is off. (FB1200/FB2200 only)
Input LED
GREEN
One of the IR buttons is being pressed.
Flashing YELLOW
CPU booting or CPU has not yet recognized
HMI module when HMI first powered on; goes
off when recognized.
Status LED
GREEN
OK - Normal
RED
Unit failed
YELLOW
Low power source/change battery soon
(FB1100 Flow Computer with lithium battery
pack only)
Off
No power
Flashing GREEN
System is booting
Momentary GREEN –
approximately every 6
seconds
HMI module is in sleep mode (to reduce
power consumption); LED goes on when HMI
module checks the “Hold to Wake” IR button.
Alternating RED, GREEN,
YELLOW
HMI module boot firmware loaded but no
application is present. You may see this
during an HMI firmware update.
Alarm LED
GREEN
No alarms.
Flashing RED
HMI firmware update in progress.
RED
Alarms are present.
Table 5-2: Special LED Sequences using Multiple LEDs
LED Sequence
Color/State
Link, Input, Status, and Alarm all solid RED
HMI module failed. Replace with spare or
return for repairs.
Link and Alarm alternately flash RED; sequence
repeats
CPU stuck in boot mode. Contact technical
support.