Basic Documentation

26/44
Siemens Rotary actuators without spring return GBB/GIB..1 CE1Z4626en
Smart Infrastructure Wiring notes 2019-11-28
6.4 Actuator wiring (Modbus RTU)
The damper actuators are supplied with a prewired connecting and communication
cable. All interconnected devices must be connected to the same G0.
Strand code
Strand color
Terminal code
Description
1
red (RD)
G
System potential AC 24 V
2
black (BK)
G0
System neutral AC 24 V
6
violet (VT)
REF
Reference (Mod
bus RTU)
8
grey (GY)
+
Bus + (Mo
dbus RTU)
9
pink (PK)
-
Bus
-
(Modbus RTU)
The operating voltage at terminals G and G0 must comply with the requirements under
SELV or PELV.
Safety transformers with twofold insulation as per EN 61558 required; they must be
designed to be on 100 % of the time.
Note