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3.5.8 LED status display
Table 9: Status display and its meaning
LED
Description
Colour
LED = OFF
LED = ON
LED flashes
Inputs 0
… 3
Analog input
Yellow
Analog input = ca.
0 mA
Input = ON (LED light
intensity depends on
the input value)
--
Channel error
Red
No channel error
Channel error
--
UP
Process voltage
+24 V DC via
terminal
Green
Process supply
voltage is missing
Process supply
voltage OK
--
PWR
+3.3 V voltage
from IO-Bus
Green
+3.3 V IO-Bus
voltage is not avail-
able
+3.3 V IO-Bus
voltage is available
--
ERR1
Module error
indicator 1
Red
No module error
Module error which
leads to a SAFE
STOP state
Module passivation
and/or acknowl-
edgement request
(alternating blinking)
ERR2
Module error
indicator 2
Red
3.5.9 Technical data
NOTICE!
AI581-S-XC version is available for usage in extreme environmental conditions (
data for AC500-S-XC” on page 446
AC500-S Safety Modules
AI581-S analog safety input module > Technical data
30.03.2017
AC500-S
149