Introduction
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1.1
Overview
The GSM alarm module is a compact, distributed control and signaling system. All the inputs
and outputs (I/Os) of the module are monitored by SMS text messages and email, and are
controlled by SMS communication through the GSM network.
The module is configured by means of configuration software. Every input and output can be
modified by means of user-defined parameter names and messages. A selected group of
users can be chosen from the phonebook to configure and operate the module ("active
users"), or only to receive messages ("users").
GSM alarm module features:
●
4 digital outputs (DO), relay outputs, changeover contacts, 250 V/5 A
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8 universal inputs (UI), which can be set by means of configuration software:
–
Analog input (AI), 0 to 10 V
–
Digital input (DI)
The module sends a previously defined message to selected persons with every defined
change of state (rising or falling flank in the case of digital inputs or reaching a level in the
case of analog inputs).
The outputs are switched whenever an active user sends a previously defined SMS to the
GSM alarm module.
For testing purposes, the GSM alarm module can send a text message (SMS) on a regular
basis, i.e. at a user-defined time. In the event of a power failure, the module still has enough
energy to send an SMS message to all active users to inform them of the power failure. It
also sends an SMS message once the power supply has been restored.
1.2
Safety instructions
●
The GSM alarm module must NOT be used to monitor sensitive or time-critical
processes. A power supply interruption or a GSM network failure can prevent
uninterrupted monitoring.
●
ESD precautions must be taken when opening the module.
●
This module requires a GSM data connection. You can obtain information about the costs
from your GSM service provider.
GSM alarm module
System Manual, 06/2014, 2541304131-01
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