3UG4651 speed monitoring relay
12.5 Diagnostics
3UG4 / 3RR2 monitoring relays
Manual, 05/2016, NEB927043002000/RS-AC/004
313
12.5
Diagnostics
12.5.1
Indications on the display
Display information
The display is divided into three different areas.
①
Speed measured value or fault symbol
②
Type of monitoring
③
Symbol of the changeover contact
Meaning of the information on the display
Note
Indications in the event of a fault
The symbols on the display flash to indicate an error.
The following statuses and faults are indicated on the display as a diagnostics message with
flashing symbols:
Display
area
Symbol
Meaning
①
1100
Measured speed is displayed
②
Monitoring for speed overshoot
(rpm▲)
②
Monitoring for speed undershoot
(rpm▼)
②
Range monitoring (rpm▲ and rpm▼)
②
Speed is in the correct range
②
A speed overshoot has occurred
②
A speed undershoot has occurred
③
•
Not flashing: Relay contact 11/12 open, relay contact 11/14 closed
•
Flashing: Delay time (ON-delay or tripping delay) running
•
Masked out: Relay contact 11/12 closed, relay contact 11/14 open
You will find more information about the switching behavior of the output relay in Chapter
"Functions (Page 309)."