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BETA Monitoring
Monitoring of Plants and Devices
5
TT7 1 GSM alarm modules
14/4
Siemens ET B1 · 10/2008
14
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Overview
The GSM alarm module (GSM = Global System for Mobile
Communications) enables cost-effective remote control of
industrial and private building management, e.g. of heating,
air-conditioning and cooling systems. But it is also possible to
safely control elevators and escalators and all kinds of
production equipment, such as machines, automatic devices
and conveyor belts. The GSM alarm module is particularly
suitable for monitoring remote plants, i.e. for monitoring the
heating of summer houses or the pumps of a water treatment
plant.
Using voltage relays, current relays, fuse monitors, miniature
circuit breakers, residual current operated circuit breakers or
surge arresters fitted with auxiliary switches or signal contacts,
there are virtually no limits to the type of monitoring tasks that
can be carried out. The use of remote controlled mechanisms
with miniature circuit breakers and residual current operated
circuit breakers also allows realization of a range of
cost-effective and interesting solutions.
Note:
Because the availability of mobile networks cannot be guaranteed,
GSM alarm modules should not be used for safety-relevant
control functions.
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Benefits
•
Mobile monitoring and control of electrical plants and system
components
•
Fast and reliable alarm signaling over SMS
•
Simple operation and parameterization over SMS
•
Saves space and can be retrofitted in any plant
• 1
administrator telephone number from any mobile network for
configuration
•
Transmission of alarm messages to up to 5 cell phones
•
Customized tests for 2 alarm inputs and switchable output.
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Technical specifications
1)
Continuous operation possible with restricted function: The device is able
to log into the system and there is a > 90 % likelihood it will execute calls
with a signal strength of -85 dBm. The sender output capacity and the
receiver sensitivity may be reduced.
5
TT71 110-0
5
TT71 120-0
Rated power P
s
W 3.5
4.5
Digital inputs
V DC 24; 2-wire connection, isolated
Signal voltage "0" at the input
V DC -2 ... 2
Signal voltage "1" at the input
V DC 8 ... 30
Maximum contact load
At p.f. = 1
V; A 250; 5
Maximum contact load
V; A 30; 5
Rated operational voltage U
e
V DC 10 ... 30
•
Permissible residual ripple
-
At 10 V
%
< 1
-
At 30 V
%
< 10
Vibration resistance
Acc. to EN 60068-2-34 g
1
at 10 ... 500 Hz
Shock resistance
Acc. to EN 60068-2-27 g
30
for 18 ms
Shock resistance
Acc. to EN 60068-2-29 g
25
for 6 ms
EMC
Acc. to EN 6100-6-2,
EN 61000-6-3
Complied with
Frequency band
E-GSM 900/GSM 1800
Power class
GSM 900:4 (2 W)/GSM 1800:1 (1 W)
GPRS class
Multislot Class 8, operation mode Class B, HSCSD, SAT
Terminals
•
Terminals
±
screw (Pozidriv)
1
•
Conductor cross-sections of main current
paths
-
Rigid, max.
-
Flexible, with end sleeve, min.
mm
2
mm
2
1.5 ... 4
1 ... 2.5
Ambient temperature
°C -20 ... +55
-20 ...
+50
•
Expanded
1)
°C -30 ... +75
--
Storage temperature
°C -40 ... +85
-20 ...
+50
Humidity
at 40 °C
% 0 ... 95
© Siemens AG 2008