Emerson Rosemount 2130 Quick Start Manual page 25

May 2022
3.5.7 Fault condition detection (self-check mode only)
When a fault condition is detected in the self-check operating mode, the
heartbeat LED flashes once every half a second and every third flash is
missed. The output from the level switch will then be as
Table 3-15: Fault Condition Detection (Self-check Mode Only)
Direct load
1
2 3
< 4 mA
I L
R
N L
0 V + V
(=Fault)
DPCO relay
NC C NO NC C NO
(=Fault)
Fault and alarm (2 x SPCO) relays
Alarm relay
NC C NO
(=No alarm)
Quick Start Guide
1
Fuse
2A(T)
DPST
PLC
2 3 4
< 100 μA
I L
-
+ I/P
PLC
(=Fault)
NAMUR
1 2
< 1.0 mA
(-) (+)
(=Fault)
Fault relay
NC C NO
(=Fault)
Quick Start Guide
Table 3-15.
PNP dc
1 2 3 4
R
I
L
Fuse
1A(T)
< 100 μA
(+) (-)
(=Fault)
8/16 mA
1 2 3
< 3.7 mA
(-) (+)
(=Fault)
= Load on
= Load off
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