X-DO 12 01
4 Start-up
HI 801 023 E Rev. 5.00
Page 39 of 52
4.4.3
Wiring one Actuator to Redundant Modules
Use a redundant X-CB 011 02 (Figure 13) connector board to connect one actuator to
redundant relay modules or use two connector boards of type X-CB 011 01, if the redundant
modules are not plugged in to the base plate adjacently.
NOTICE
When connecting an actuator to redundant relay modules, the actuator must be attached on the
same channel number of the two modules.
X-DO 12 01
DO +
DO -
+
-
~
Connector Board
X-DO 12 01
DO +
DO -
Figure 13: Redundant Wiring of an Actuator and Redundant Relay Modules
NOTICE
Burner applications
To switch off the entire fuel feed of continuously operating combustion plants where
regular tests cannot be performed in sufficiently short intervals, the relay function must
be tested, depending on the application, using the wiring shown above, e.g., once per
day.