Dräger VarioGard Instructions For Use Manual page 12

Installing the VarioGard system
Electrical installation
– Relay switching contacts supplied with externally fused supply.
1 System bus (terminal contacts)
30 V nominal DC output, max. 1.2 A current-load as a slave supply
voltage
Pin assignment:
+ (30 V nominal supply)
D (Data cable)
GND (ground)
2 Acknowledgment (terminal contacts)
A key can be connected to the input for acknowledgment.
Pin assignment:
Installation layout for remote acknowledgment at central unit:
5 V
54
Q (Switching contact)
GND (ground)
Central unit
10 KΩ Q
GND
➀ ➂ ➁
L N PE
➀ ➂ ➁ ➀ ➂ ➁ ➀ ➂ ➁ ➀ ➂ ➁ ➀ ➂ ➁
1
2
Key