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BETA Monitoring
Monitoring of Plants and Devices
5
TT3 46 fault signaling units
14/8
Siemens ET B1 · 10/2008
*
You can order this quantity or a multiple thereof.
14
■
Overview
Fault signaling units are used in small plants where the installation
of complex fault signaling systems would be too cost and labor-
intensive. In the event of a fault, they enable fast fault localization
of all monitoring devices and limit monitors from a central location.
This increases plant availability. With the correct sensor configu-
ration, they also provide the option of preventative maintenance.
• 4
fault signal inputs with LED
• 1
LED as centralized fault indicator
•
One unit each for centralized fault indication and acoustic sig-
naling
•
With acknowledgment for acoustic indicators
•
Open-/closed-circuit principle to the 4 inputs can be set via
jumpers X1 – X2
•
A maximum of 39 5TT3 461 expansion fault signaling units can
be connected to the 5TT3 460 centralized fault signaling unit
•
The maximum possible cable length between 5TT3 460
centralized fault signaling units and 5TT3 461 expansion fault
signaling units is approx. 100 m with a conductor cross-section
of 1.5 mm
2
.
■
Benefits
•
Ultra compact device designs that only require the smallest of
spaces in distribution boards
•
The modular design means that extra devices can be simply
added as your system expands.
■
Technical specifications
■
Selection and ordering data
5
TT3 460
5
TT3 461
Standards
IEC 60255; DIN VDE 0435-110, -303
Rated control voltage U
c
V AC 230
Operating range
× U
c
0.8 ... 1.1
Rated frequency f
n
Hz
50/60
Fault signaling inputs S1 ... S4
V AC 230
Signal voltage
to terminals S and H
V
7 ... 10
Noise pulse duration
ms
100
Acknowledgment pulse duration
ms
200
Contacts
•
Rated operational voltage U
e
V AC 230
--
•
Rated operational current
I
e
A
5
--
•
Minimum contact load
V; mA 10;100
--
Terminals
•
Terminals
±
screw (Pozidriv)
PZ 1
•
Conductor cross-sections
-
Rigid, max.
mm
2
2
× 2.5
-
Flexible, with end sleeve, min.
mm
2
1
× 0.5
Permissible ambient temperature
°C -20 ... +60
Humidity class
Acc. to IEC 60068-2-30
F
U
e
I
e
U
c
MW DT Order No.
Price
per PU
PG PU PS*/
P. unit
Weight
per PU
approx.
V AC A AC V AC
Unit(s) Unit(s) kg
Centralized fault signaling units with transparent cap
230
5
230
2
B
5
TT3 460
027 1
1
0.130
Expansion fault signaling units with transparent cap
230
2
B
5
TT3 461
027 1
1
0.110
© Siemens AG 2008