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5.3.5
LED on SITOP power
Table 5-9
Status and error displays by means of LEDs on SITOP power
24 VDC (24 V at output terminals):
ELECTRONIC/SENSOR 1L+ (supply voltage for electronic components/sensors):
LOAD 2L+ (load voltage supply):
TEMP > (temperature rise):
LEDs
24 VDC
ELECTRONIC/
SENSOR 1L+
Off
Off
Flash.
Flash.
On
*
*
On
*
*
*
Not applicable
1) Depends on parameterized short-circuit response
ET 200X Distributed I/O Device
EWA 4NEB 780601602-06
LOAD 2L+
TEMP >
S
Off
*
S
S
Flash.
*
S
S
*
*
S
On
*
S
*
Flash.
Commissioning and Diagnostics
Meaning
S
No supply voltage
Switch on the
mains voltage.
S
Short circuit at
Repair the short
1)
output
circuit.
S
Overload in
Check the current
RESTART mode
consumption and
reduce, if
appropriate, the
number of modules
(see Section 2.7)
S
Short circuit at
Repair the short
1)
output
circuit.
24 V is applied to
–
the output
terminals.
Associated bus
–
segment is
supplied with 24 V
S
Switch off as
Check
maximum
environmental and
temperature
load conditions
exceeded
green
green
green
red
Action
5-19
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