Installation Instruction VARIODYN
®
D1 System
48
FB 798663.GB0 / 05.19
Control contacts (inputs/outputs)
The 48 control contacts (digital I/O) can be used for controlling voice alarm system components or for
connection to other systems, such as a fire alarm control panel. The function of the input or output can be
individually programmed in the configuration for each control contact.
The reference potential for the control contacts is available at the four GND terminals.
Contacts 41 – 48 are also suitable for monitoring the connected line for short-circuit or line interruption.
Cable for cabinet rear panel UIM (Part No. 583401.21 - (Option)
Prefabricated cabling from the control contacts to the cabinet rear panel;
per UIM max. 1 piece.
Connection diagram of the inputs (example)
DIG
IT
AL
I/O
DIG
IT
AL
I/O
GND 1 2 3 4 5 6 7 8 9 10 11 12
GND
GND
GND
13 14 15 16 17 18 19 20 21 22 23 24
25 26 27 28 29 30 31 32
34 35 36
37 38 39 40 41 42 43 44 45 46 47 48
33
R1
R2
3
K3
680
Ω
1
2
ext. device without
monitoring
ext. device with
End-of-Line monitoring
Input with switch contact
The input is switched to GND and tripped by
closing the external, potential-free contact.
Input with line monitoring
The "line monitoring" function can be
activated in the configuration for the control
outputs 41 to 48. In this case, the connected
line is monitored for wire break and short-
circuit.
Connection to external monitoring resistors
(R1/R2) is required for this function.
Connection diagram of the outputs
DIG
IT
AL
I/O
DIG
IT
AL
I/O
GND 1 2 3 4 5 6 7 8 9 10 11 12
GND
GND
GND
13 14 15 16 17 18 19 20 21 22 23 24
25 26 27 28 29 30 31 32
34 35 36
37 38 39 40 41 42 43 44 45 46 47 48
33
ext. device
+
0 V / GND
+ U
B
power supply
An active output switches to 0V / GND.
Triggering of an ext. device (+24 V DC)
current consumption max. 50 mA