20
16-11
18
H-System – Isolated Barriers and Termination Boards for HIMA
Product Specifications
Figure 2.15
Example status indicators
2.6
Status Indicators of Termination Boards
LEDs are often used on termination boards to indicate different statuses (e. g. for
power supply, device failure, status messages, binary switching states). Standard
LED colors are assigned to the status display according to NAMUR NE44.
1
Yellow LED "OUT"
Switching state of the output
2
Red LED "CHK"
Lead breakage and short circuit status indicator
3
Green LED "PWR"
Power supply status indicator
OUT CHK PWR
1
2
3
LED
Display function
Display
Meaning
Green LED "PWR1"
Power supply I
On
Power supply OK
Off
No power
Green LED "PWR2"
Power supply II
On
Power supply OK
Off
No power
Red LED "FAULT"
Power supply failure
On
Power supply failure
Device fault
Flashing
Isolated barrier fault
Green LED "Run"
Connection status
On
The HIMax I/O module is supplied with
power and is connected to the
termination board (FTA) via a system
cable.
Red LED "Field"
Connection failure
On
The HIMax I/O module detects faults in
the connection between HIMax I/O
module and termination board (FTA).
Table 2.2
Meaning of status indicators
