5
INM F890 Rev 1
Press the carrier onto the DIN-rail and rotate each of the DIN clamp screws clockwise
until the tab tightens against the DIN-rail. The clamping tabs can be seen through the
Inspect clamps holes when they are in the correct position.
4 .4 Removal from DIN-rail
The Power Modules must be removed from the carrier to obtain access to the DIN-
rail clamp screws. Support the carrier by pressing it to the DIN-rail and unscrew
(counterclockwise) the six DIN-rail clamp screws. Turn each screw approximately two
full turns when releasing its clamping tab from the rail. Remove carrier.
4 .5 Mounting and Removal of the Power Modules
The Power Modules are secured to the carrier with four screw mountings. There are
four locating connectors (two for each module) on the module carrier along with mating
connectors in the F801 or F802 module. Align the module with the retaining screws
and press onto the connector. Hold it in place while tightening the four retaining
screws. To remove a Power Module, support the module while unscrewing the four
retaining screws at its base. Lift the module off the carrier connector.
Note: Earlier versions of the module carriers do not have locating connectors. Align
using the retaining screws furthest from the module connector and rock onto the
connector.
5
ELECTRICAL CONNECTIONS
Figure 4 -
Electrical Block Diagram of F890-CA
Megablock
wiring hub
F801 or F802
Power Module A
F801 or F802
Power Module B
Power B
Power A
To fieldbus devices
To fieldbus
segments
2 - 8
1
2
3
4
5
6
7
8
To Host Ports
1 - 8
1
2
3
4
5
6
7
8
