Troubleshooting; Repair Information - Johnson Controls FX-PCX2721 Installation Instructions Manual

Troubleshooting

Observe the Status LEDs on the front of the expansion module. Table 9 provides LED status
indicator information for troubleshooting the expansion module.
Table 9: Status LEDs and description of LED states
LED label LED color Normal LED
POWER Green
FAULT Red
SA/FC BUS Green
EOL Amber

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.
Accessories
See the following table for expansion module accessories ordering information.
Table 10: Accessories ordering information
Product code number
TP-2420
24 FX-PCX2721 Expansion Input/Output Module Installation Instructions
Description of LED states
state
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
Off Steady Off Steady = No Faults
On Steady = Device Fault; no application loaded; Main
Code download required, if expansion module is in Boot
mode, or a firmware mismatch exists between the FX-PCX
and the FX-ZFR1811 Wireless Field Bus Router.
Blink - 2 Hz = Download or Startup in progress, not ready
for normal operation
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
Off (Except on On Steady = EOL switch in ON position
terminating
Off Steady = EOL switch in OFF position
devices)
Description
Transformer, 120 VAC Primary to 24 VAC secondary, 20 VA, Wall
Plug