User Guide
DVS-21
02/2018
• V.1.0 • L. Wolle
51/131
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7.11 24LI
Line module for driving 24 lines, including two-stage surge protection.
Connection of the lines (keys) of classical stations with separate AF and control lines. The AF-connection
of these stations is via the analog module
Interface for any control tasks
In- and outputs are referenced to +0V of the system supply voltage (typ. -48v) without glavanic isolation.
The absolute voltage range of the inputs is -24V to 60V. The output current is limitted to 150mA. In an
overload condition the output will be switched off.
No configuration required!
Line function:
Port 1:
Line 1 - 24
M -> CPU Detected input voltage
Line 1 - 24
CPU -> M Output is enabled
Port 2 - 4, without function
Display and control elements:
LEDs
1-24
GREEN - ON
Detected input voltage
GREEN - FLASHING Output is enabled
GREEN - OFF
Idle state
Backplane connectors:
1 - 24 Lines
