Emerson FOUNDATION Fieldbus Interface Bedienungsanleitung Seite 5

Safe Use Instructions – F
Figure 2. Side View of the FFI
Figure 3. Bottom View of the FFI
3. The FFI housing mounts on two 35 x 7.5 mm DIN
rails. See Figure 4.
•
Mount the upper DIN rails on the FFI.
•
Mount the bottom DIN rails onto the backplane.
•
Seat the FFI onto the lower rail mounted to the
backplane, assuring that the lower edge of the
FFI is flush to the panel.
•
Pivot the top of the FFI until it is flush against
the panel.
•
Fasten the upper strip of DIN rail to the panel.
Fieldbus Interface
OUNDATION
DIN Rail Mount
DIN Rail Mount
Figure 4. Back of the FFI
WIRING FFI COMPONENTS
Wiring the FFI involves connecting the fieldbus
devices to the H1 modules, wiring the H1 modules to
external power (if appropriate), and wiring the FFI
CPU module to the ROC or to external power. For
this document, we suggest you first wire the fieldbus
devices to the H1 modules and then wire the FFI to
the ROC (or external power) before you apply
power.
Note: Modules have removable terminal blocks for
convenient wiring and servicing. Twisted-pair
cable is recommended for I/O signal wiring.
The removable terminal blocks accept 12-22
AWG wire.
Wiring H1 Segment Modules
To wire either the H1 PWR or H1 (unpowered)
module:
1. Bare the end (6.4 mm maximum) of the wire.
2. Insert the bared end into the clamp beneath the
termination screw.
3. Tighten the screw. See Figure 5 or Figure 6.
Expose a minimum of bare wire to prevent short
circuits, but allow some slack when making
connections to prevent strain.
The FFI supports up to four of either of two kinds of H1
segment modules. Powered modules (see Figure 5)
provide up to 125 mA of conditioned power.
Form A6296
Page 3