ABB WaterMaster FET100 - Transmitter; Sensor Cable Connections; Sensor Cable Terminal Connections and Recommended Cable Lengths

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