Siemens SICAM A8000 Serie Montage Seite 4

Block Diagram
Variant with 1-pole circuitry DC
DO-8221
reinforced
insulation
U+ U–
U– U+
Measuring in the plus circuit (Measuring in the minus circuit)
Variant with 1.5-pole circuitry DC
DO-8221
reinforced
insulation
U+
U–
U–
U+
Measuring in the plus circuit (Measuring in the minus circuit)
DO-8221 Product Information
C53207-A5081-C481-2A-7483 / DC8-096-2.01; Edition 02.2020
BUS
Controller
BUS
Controller
Variant with 2-pole circuitry DC
DO-8221
reinforced
insulation
U+
U–
U–
U+
Measuring in the plus circuit (Measuring in the minus circuit)
Warning: The connectors X1 and X2 may only be connected or disconnected in de-
energized state! X1 must always be connected in operation (even if no external loads are
connected)!
SICAM A8000 Series
DO-8221 Secured Command Output
BUS
Controller
4