505 / 582
BETA Monitoring
Monitoring of Plants and Devices
5
TT3 46 fault signaling units
14/9
Siemens ET B1 · 10/2008
14
■
Dimensional drawings
■
Schematics
Switching example, function chart
If there is a fault, the fault indication contact closes and a
centralized fault is indicated over an LED. The assigned LED
remains lit until the fault is eliminated. Until the acknowledgment,
momentary faults can be identified by the remaining centralized
fault.
5
TT3 460
5
TT3 461
5 43
64
45
90
I2_11511a
36
36
A1 S H
S1S2S3S4
A1 S H
S1S2S3S4
14 24
QHA2
13 23
X1X2
A2
X1X2
5
TT3 460
5
TT3 461
S1 A2 A1
S2 S3 S4
X1 X2 S H QH
I2_00154a
13
14
23
24
S1 A2 A1
S2 S3 S4
X1 X2 S H
I2_00155a
A1 A2
N
13 23
S1 S2 S3 S4
A1 A2
S1 S2 S3 S4
X1 X2 S H
X1 X2 S H
QH
SM
14 24
5
TT3 460
5
TT3 461
I2_07282c
L1 230 V AC
(
Working current)
(
Closed-circuit
current)
Acknow-
ledgement
key
Fault
alarm
FA
© Siemens AG 2008