Transmitter / Sensor Cable Connections; Sensor Cable Terminal Connections And Recommended Cable Lengths - ABB WaterMaster FET100 User Manual

WaterMaster FET100
Electromagnetic floweter | Transmitter

3.4 Transmitter / Sensor Cable Connections

Caution.

Make connections only as shown.

Twist the screen wire of D1 / TFE + D2 with the outer screen drain wire and sleeve them.

For standard (non-cathodically protected) systems, connect the drain wire to the earth screw.

For cathodically protected systems, connect the drain wire to terminal SCR, ensuring no braid or
wires touch the exposed copper areas within the transmitter sensor cable wiring area.

If an earth screw is not available at the transmitter enclosure, connect the drain wire to terminal
SCR.

Ensure the seal and mating surfaces are clean to maintain environmental rating.

Conduit connections must provide cable entry sealing.

Ensure cable glands are tightened after wiring. Do not overtighten the plastic cable glands to
avoid destroying their sealing properties. Initially, tighten finger-tight, then a further
using a suitable spanner or wrench.

Fit blanking plugs where required.

3.4.1 Sensor Cable Terminal Connections and Recommended Cable Lengths

*Inner wire
**For cathodically protected systems (or if the transmitter enclosure does not have an earth screw) connect
the drain wire to terminal SCR.
Fig. 3.5 Sensor Cable Connections at Transmitter Terminal Block – Standard System
12
Cut cables to 70 mm (2.75 in)
M1 M2 D1/TFE
Brown Red Orange
SCR
Screen
**Drain Wire
(Twisted with
Screen from
D1/TFE – Orange
and D2 – Yellow)
Refer to Section 3.3, page 11 for
cable preparation requirements
before connecting cable
Cut cables to 60 mm (2.35 in)
D2 3 S2
Yellow Green Blue
(Sleeve) (Screen)
3 Electrical Installation
1 3
/ to / turn
2 4
E2 E1 S1
Blue Violet Violet
(*Signal) (*Signal) (Screen)
OI/FET100–EN Rev. A