Electrical Connections; Connecting The Power Supply; Installing The Connecting Cables - ABB ProcessMaster FEP611 Operating Instructions Manual

5.5

Electrical connections

WARNING
Risk of injury due to live parts.
Improper work on the electrical connections can result in
electric shock.
— Connect the device only with the power supply switched
off.
— Observe the applicable standards and regulations for the
electrical connection.
The electrical connection may only be established by
authorized specialist personnel and in accordance with the
connection diagrams.
The electrical connection information in the manual must be
observed; otherwise, the type of electrical protection may be
adversely affected.
Ground the measurement system according to requirements.
5.5.1

Connecting the power supply

NOTE
— Observe the power supply limit values in accordance
with the information on the name plate.
— Observe the voltage drop for large cable lengths and
small conductor cross-sections. The voltage at the
terminals of the device may not fall below the minimum
value required in accordance with the information on the
name plate.
The power supply is connected to terminal L (phase),
N (neutral), or 1+, 2-, and PE, as stated on the name plate.
A circuit breaker with a maximum rated current of 16 A must
be installed in the power supply line of the transmitter.
The wire cross-sectional area of the power supply cable and
the circuit breaker used must comply with VDE 0100 and must
be dimensioned in accordance with the current consumption
of the flowmeter measuring system. The cables must comply
with IEC 227 and/or IEC 245.
The circuit breaker should be located near the transmitter and
marked as being associated with the device.
Connect the transmitter and sensor to functional earth.
22 OI/FEP610/FEH610-EN Rev. B | ProcessMaster FEP610, HygienicMaster FEH610
5.5.2

Installing the connecting cables

Observe the following points when routing signal cables:
— A magnet coil cable (red and brown) is run parallel to the
signal lines (violet and blue). As a result, only one cable is
required between the flowmeter sensor and the
transmitter. Do not run the cable over junction boxes or
terminal strips.
— The signal cable carries a voltage signal of only a few
millivolts and must, therefore, be routed over the shortest
possible distance. The maximum allowable signal cable
length is 50 m (164 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, run the signal / magnet coil cable through a
metal pipe and connect this to the station ground.
— All leads must be shielded and connected to the station
ground potential.
— To shield against magnetic interspersion, the cable
contains outer shielding. This is attached to the SE clamp.
— The supplied stranded steel wire is also connected to the
SE clamp
— Do not damage the sheathing of the cable during
installation.
— Ensure that a drip loop (water trap) is used when installing
the connecting cables for the sensor.
1
1
Fig. 32: Laying of the connecting cable
1 Drip loop
1
G12017