Dräger REGARD 3900 Serie Gebrauchsanweisung Seite 65

5.7.1 4–20 mA two-wire transmitter
Combining the control modules must meet the following requirements:
– Max. 6 control modules (input, relay and output modules together)
– Max. 4 input modules
– Max. 2 relay modules
– Max. 4 input modules and relay modules together
– Max. 4 output modules
5.7.2 4–20 mA two-wire transmitter with safety barrier
See also the instructions for safety barriers and transmitters for the connections
between the transmitter and barrier, as well as for the earth connection of the
barrier.
REGARD
®
3900
Installation & commissioning