Dräger REGARD 7000 Instructions For Use Manual page 28

System components
Example of rising application
1
2
3
4
Switching behaviour depending on the current threshold
The logical behaviour of the switches at the digital input (S
depending on the selection of the current threshold.
An example of the logical behaviour for a system with 3 switches is described
below.
Case 1:
Situation 2: Current threshold set to 35 mA.
Situation 3: Current threshold set to 60 mA.
Technical data
Number of input channels: max. 8
Channel output voltage:
1
= 24 mA
RS1
= 50 mA
EOL
2
Digital In +
24V
Digital In -
Current threshold
Wire break current (0.5 x static current = 25 mA)
Static current
Current states
Current threshold set to 15 mA.
Logical state of digital input: If 1 switch is closed, the condition is met
(1 of 3).
Logical state of digital input: If 2 switches are closed, the condition is
met (2 of 3).
Logical state of digital input: If 3 switches are closed, the condition is
met (3 of 3).
Typically 24 V, depending on the supply voltage of the
Docking Station.
= 24 mA
RS3
= 24 mA
RS2
3
4
R R R
S1 S2 S3
1kΩ 1kΩ 1kΩ
S S S
1 2
EOL
480Ω
3
to S ) is different
1 n