For a floating (non-grounded) assembly used in specific applications, marine applications in particular, an insulated power supply module must be chosen among the following references:
-
BMXCPS2010 (24 Vdc)
-
BMXCPS3020 (24...48 Vdc)
-
BMXCPS4022 (24...48 Vdc)
-
BMXCPS3540T (125 Vdc)
-
BMXCPS3522 (125 Vdc)
A device can permanently measure the degree of 24 Vdc, 48 Vdc, or 125 Vdc insulation in relation to the ground and give an alert if the degree of insulation is abnormally low. All input/output modules in the Modicon X80 range are insulated.
The power supply module is intended for use in low-voltage installations, in which the main power branch is protected on both wires by devices as fuses or breakers that limit the current to 15 A for North America and 16 A for the rest of the world. For details, refer to the description of
standards and certifications.
NOTE: The direct current power supply modules are already equipped with a protective fuse. This fuse, connected at input voltage, is inside the module and is not accessible.
BMXCPS2010, BMXCPS3020, and BMXCPS4022 Wiring Diagram
The following diagram shows the 5-pin terminal block connections on to a floating direct current network:
(1)
Ground screw of the rack
(2)
Floating network for the power supply of sensors, actuators and input/output modules
FG
Functional ground
PE
Protective earth
BMXCPS3540T Wiring Diagram
The following diagram shows the 5-pin terminal block connections on to a floating direct current network:
(1)
Ground screw of the rack
(2)
24 Vdc sensor power supply.
FG
Functional ground
PE
Protective earth
BMXCPS3522 Wiring Diagram
The following diagram shows the 5-pin terminal block connections on to a floating direct current network:
(1)
Ground screw of the rack
NC
No connection
FG
Functional ground
PE
Protective earth 
WARNING
