Johnson Controls IOM2721, Руководство по установке, Страница: 14 / 18

Table 8: Status LEDs and description of LED states
LED label LED color Normal LED state Description of LED states
POWER Green On Steady
Off Steady = No Supply Power or the expansion module’s polyswitch/resettable
fuse is open. Check Output wiring for short circuits and cycle power to expansion
module.
On Steady = Power Connected
FAULT Red Off Steady
Off Steady = No Faults
On Steady = Device Fault
Blink - 2 Hz = Download or Startup in progress, not ready for normal operation
SA/FC BUS Green Blink - 2 Hz
Blink - 2 Hz = Data Transmission (normal communication)
Off Steady = No Data Transmission (N/A - auto baud not supported)
On Steady = Communication lost, waiting to join communication ring
EOL Amber
Off (Except on
terminating devices)
On Steady = EOL switch in ON position
Off Steady = EOL switch in OFF position
Repair information
If an expansion module fails to operate within its
specifications, replace the expansion module. For a
replacement expansion module, contact your Johnson
Controls representative.
IOM2721 Input/Output Module Installation Guide 14