Emerson PNC001-A Series User Manual

PACSystems™ RX3i and RSTi-EP CPU Reference Manual Section 2
GFK-2222AK October 2019
CPU Features & Specifications 40
2.3.1.3.2 Module Status Indicators
There are three LEDs and one membrane pushbutton on the front panel, as shown in
Figure 3. The table below describes the behavior of each LED:
LED
LED State
Operating State (after Power-Up)
RUN
Blinking; All
other LEDs off
This LED indicates the status of PLC during powering up. It starts
blinking 6 seconds after applying power to the PLC and remains in this
state for up to 15 seconds. After this all LEDs turn off and will remain in
this state until PLC is ready.
OK
On Green
PLC has passed its power-up diagnostics and is functioning properly
Off
Power is not applied or PLC has a problem.
Blinking; All
other LEDs off
PLC in STOP/Halt state; possible watchdog timer fault. If the
programmer cannot connect, cycle power and refer to the fault tables.
RUN
On Green
PLC is in RUN mode.
Off
PLC is in STOP mode.
Blinking; All
other LEDs off
Indicates that PLC has encountered a fatal error and is blinking the
error code.
Fault
On Red
PLC is in STOP/Faulted mode: a fatal fault has occurred.
Off
No fatal faults detected.

Emerson PNC001-A Series Specifications

General

Brand	Emerson
Model	PNC001-A Series
Category	Controller
Language	English