Remote Mount Design; Cable Specification; Routing The Signal Cable; Connecting The Signal Cable - ABB CoriolisMaster FCB330 Mode D'emploi

5.4

Remote mount design

With remote mount design devices, the transmitter is installed
separately and connected to the flowmeter sensor via a signal
cable.
5.4.1

Cable specification

Signal cable
Designation LI2YCY PiMF
5 x 2 x 0.5 mm
Shield Pair shielding with continuity wire and copper
braided screen
Temperature range -30 ... 70 °C (-22 ... 158 °F)
Loop resistance maximum 78.4 Ω/km
Inductance 0,4 mH/km approx.
Max. cable length 10 m (33 ft)
5.4.2

Routing the signal cable

Observe the following points when routing cables:
— The signal cable carries a voltage signal of only a few
millivolts and must, therefore, be routed over the shortest
possible distance. The maximum permissible signal cable
length is 10 m (33 ft).
— Avoid routing the cable in the vicinity of electrical
equipment or switching elements that can create stray
fields, switching pulses, and induction. If this is not
possible, route the signal cable inside a metal cable conduit
and connect the cable conduit to operational ground.
— To shield against magnetic interspersion, the cable contains
outer shielding that is attached to operational ground.
— Do not run the signal cable over junction boxes or terminal
strips.
5.4.3

Connecting the signal cable

IMPORTANT (NOTE)
Use suitable wire end sleeves when connecting
the cables.
2
CoriolisMaster FCB330, FCB350, FCH330, FCH350 | CI/FCB300/FCH300-X1 Rev. F EN - 21
Fig. 18: Signal cable assembly, dimensions in mm (inch)
1 Wire mesh shield | 2 Foil shield continuity wires (twisted) |
3 Foil shield | 4 Grounding clamp | 5 Continuity wire |
6 Wire end sleeves
1. Strip the signal cable as shown.
2. Cut the wire mesh shield to a length of approx. 15 mm
(0.59 inch).
3. Remove the cable core and foil shield from the wire pairs.
4. Strip the wires and attach wire end sleeves.
5. Twist the foil shield continuity wires and wrap them
around the wire mesh shield. When connecting to the
devices, clamp the wire mesh shield and the twisted
continuity wires underneath the grounding clamp.
6. Connect the signal cables to the transmitter and
flowmeter sensor as shown in the connection diagrams.
7. Connect the signal cables for signal inputs and outputs to
the transmitter as shown in the connection diagrams.
Connect the cable shields to the designated grounding
clamp.
8. Connect the power supply cables to the transmitter as
shown in the connection diagrams.
9. Screw all open covers for the transmitter and flowmeter
sensor connection areas back into place.
NOTICE – Potentially adverse effect on
housing ingress protection
If the gasket (o-ring) is seated incorrectly or
damaged, this may have an adverse effect on the
housing ingress protection.
Before closing the housing cover, check the
gasket (o-ring) for any damage and replace if
necessary. Check that the gasket is properly
seated when closing the housing cover.