Intelligent Technologies (
IT.
) QSNAP
Pub. No. MN05001001E
13
February 2002
Status LED
The status LED is located on the lower right of the QSNAP as pictured in
Figure 1: QSNAP
Features
. The LED’s status changes depending on the state of the QSNAP.
The following table lists the
IT.
QSNAP LED statuses and describes the meaning of each state.
Table 14: Status LED
Truth Table
Table 15: QSNAP Truth Table
– = state not important
RUNNING 1 = Run/FWD/SLOW
1 = state true (energized)
RUNNING 2 = REV/FAST
0 = state false (de-energized)
FAULT = GND FLT and/or OL TRIP
WARNING = Running Current > FLA but not tripped
State
LED Behavior
No Power
OFF
Power-Up Routine
OFF – CRC corrupt
Waiting for a member ID,
power-up OK (mostly off)
Received a member ID,
off-line (slow blink)
On-line (mostly on)
Faulted (fast blink)
Identify device (burst)
Old State
Fieldbus Inputs
Event
New State
Action
Run 1 Run 2 Reset
FAULTED
–
–
1
RESET
OFF
FAULT = 0
READY = 1
OFF
0
0
–
NONE
OFF
NONE
OFF
1
0
–
RUN 1
RUNNING 1 RUNNING 1 = 0
OFF 0
1
–
RUN 2
RUNNING 2 RUNNING 2 = 0
RUNNING 1 1
1
–
RUN 2
RUNNING 1 NONE
RUNNING 2 1
1
–
RUN 1
RUNNING 2 NONE
RUNNING 1 1
1
–
RUN 1 removed
RUNNING 2 RUNNING 1 = 0, RUNNING 2 = 1
RUNNING 2 1
1
–
RUN 2 removed
RUNNING 1 RUNNING 1 = 1, RUNNING 2 = 0
RUNNING 1 1
0
–
FAULT
OFF
RUNNING 1 = 0
READY = 0
RUNNING 2 0
1
–
FAULT
OFF
RUNNING 2 = 0
READY = 0
RUNNING 1 1
0
–
WARNING
RUNNING 1 RUNNING 1 = 1
WARNING = 1
RUNNING 2 0
1
–
WARNING
RUNNING 2 RUNNING 2 = 1
WARNING = 1