Modem-Converter E1-L/S
© 2006 Cronyx
3.3. Alarm Conditions
The device is equipped with an alarm interface.
The alarm relay is used for turning on an external alarm unit (e.g. bell, buzzer, control
panel indicator, etc.) during an emergency situation.
The alarm relay is used in «dry contacts» mode (that is, its contacts are isolated from any
electrical circuits of the device).
Alarm conditions are as follows:
• Power failure.
• Loss of signal or there is no frame synchronization in the E1 link.
• No cable connected to the digital port (RS-232, V.35, RS-530, X.21 or Ethernet
10/100Base-T).
• Alarm signal generated by the external input sensor at the remote device is being
received.
The external input sensor has two modes of generation of the alarm signal to be trans-
mitted to the remote device: closing-sensitive (set by default) and opening-sensitive.
The mode may be changed from the console (see para.
«Sensor input» Command
at the
chapter 4.7
«Configure» Menu
below).
If the device is installed in a non-serviced room, the input sensor contacts may be driven,
for example, by remote climate sensors, door opening sensors, etc.
For more details please see the schematics at para.
Alarm Port Connector
of the chapter
2.3.
Connections
above.
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