Operation
Operating instructions PSSu E PD(-T)
21304-EN-04
22
7
Operation
7.1
Messages
The module can detect the following errors:
Module error
Explanation
Remedy
Polarity error
Polarity of the periphery supply
Correct the polarity
Error in the periphery supply
Lower voltage limit exceeded on
the periphery supply
Ensure there is a sufficient supply
Further information on PSSu error messages is available in the online help for the PSS
WIN-PRO system software.
7.2
Display elements
Legend
LED on
LED off
7.2.1
Display elements for module diagnostics
A status LED is assigned to the periphery supply (“24 V” LED).
11
I0
21
I1
24V
24V
LED
Key
Description
Colour
Status
24 V
- - -
Periphery sup-
ply: No supply
voltage or er-
ror in the sup-
ply voltage
green
Periphery sup-
ply is error-
free
red
Polarity of the
periphery sup-
ply