Diagnostics; Diagnostics With Led - Siemens 3UG4 User Manual

6.4.4

Diagnostics

6.4.4.1

Diagnostics with LED

Status display
The following information about the operating state is displayed on the 3UG4513 line
monitoring relays:
Operating status
•
•
•
•
•
•
•
•
•
•
•
You will find more information about the switching behavior of the output relays in Chapter
"Function (Page 122)."
3UG4 / 3RR2 monitoring relays
Manual, 05/2016, NEB927043002000/RS-AC/004
Supply voltage not present
Supply voltage present
Correct phase sequence
All phases available
Line-to-line voltage OK
Supply voltage present
Incorrect phase sequence
Supply voltage present
Phase failure
Supply voltage present
Line-to-line voltage
undershot
LED
Coil symbol (green) Phase failure / phase
sequence (red)
Off Off
On Off
On flashing
On On
On On
3UG4.1 line monitoring relay
6.4 3UG4513 line monitoring relay
State of the output
relays
12/ 11/ 14
22/ 21/ 24
125