Siemens SIRIUS 3RT2.1 Series System Manual

SIRIUS 3RR2 current monitoring relays
8.8 Operation
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
727
8.8.2.5 Diagnostics in the "RUN" menu
Information on the display
Display information
The display can basically be divided into three different display values/symbols.
1
23
(1) Current measured value or fault symbol
(2) Type of monitoring
(3) Symbols for the CO contact (right) and the semiconductor output (left)
Meaning of the information on the display (with Mem = no)
Symbol Meaning
12.5A Displays the measured current
n x I▲
 Flashing: Current is above the set blocking current
I>>
 Flashing: Fault current detected
L
 Flashing: Cable break/phase failure detected
 Flashing: Incorrect phase sequence detected
 Not flashing: Relay contact 31/32 open, relay contact 31/34 closed
 Flashing: Delay time (ON or tripping delay) running
 Masked out: Relay contact 31/32 closed, relay contact 31/34 open
Q
 Not flashing: Semiconductor output closed, supply voltage connected
 Flashing: Delay time (ON or tripping delay) running
 Masked out: Semiconductor output open, supply voltage not switched through
Monitoring for current overshoot
Monitoring for current undershoot
Window monitoring (monitoring for current overshoots and undershoots)
Current is in correct range
A current overshoot has occurred
A current undershoot has occurred

Siemens SIRIUS 3RT2.1 Series Specifications

General

Brand	Siemens
Model	SIRIUS 3RT2.1 Series
Category	Industrial Equipment
Language	English