Warning - Siemens SITRANS F US Operating Instructions Manual

3.7

Warning

The pertinent regulations must be observed for electrical installation, in explosion risk areas in
particular:
• The rules and regulations governing the erection and operation of plants in explosion risks
areas (e.g.
• The EC Type Examination Certificate - Do not install the device under voltage. Danger of
electric shock! -The version for power supply
or PELV circuits.
The SITRANS FUS060 transmitter comply with the following electrical installation categories:
•
Version for 115 to 230 V AC: Installation Category II
•
Version for 24 V AC/DC: Installation Category II
General requirements:
• The power supply should be connected via a circuit breaker and fused via a fuse (max. 4 A).
• Use cables with a cross section of at least 1.5 mm
the power supply.
•
Lay
conduction of heat by the sensor/metering tube. Lay the cables so that they do not come into
contact with the hot sensor/metering tube.
• Lay signal cables separately from cables with voltages > 60 V.
• Use cables with twisted wire pairs.
• Full HART 5.1 specifications only with shielded cables.
• Earth transmitter housing.
Make the electrical connection as follows:
• Cables used for connection must have diameters fitting the glands.
• Use shielded cables for the outputs
• Compare data on rating plate with local power supply.
• Release lid lock of terminal box by turning the 3 mm hexagon socket screw.
• Unscrew lid from terminal box.
• Push power cable and signal cable through cable glands up to terminal block. Lay cables
in a bend in front of cable glands to prevent moisture getting into terminal block.
• Use signal cables with shielded wire pairs if analog output and pulse/frequency output are
to be used simultaneously and signals are transmitted in one cable.
•
For full performance at 10 KHz frequency on digital output 1, the capacitive load should not
exceed 100 nF (see also technical specification for digital output 1 on pages 6 and 7).
• Make the connection. Fit end ferrules to fine wire cables.
• Connect PE cable of power supply to earth terminal
so that the PE conductor is the last one to come away when the cables are pulled.
• Mount lid for power supply terminals in devices with ignition protection
ATEX II 2G Ex dem [ia/ib]
• Tighten cable gland and check strain relief.
• In devices with protection type
with certified blind plugs.
•
Screw lid tightly to housing, always use a tool. The sealing ring must be clean and
undamaged.
• Mount lid lock.
EN 60079-14).
heat-resistant cables if high temperatures can occur on the housing, eg due to
T6..T3.
SFIDK.PS.029.E5.02 / SW 2.01.07
DC 19 to 30 V may only be connected to SELV
2
and double or reinforced insulation for
ATEX II 2G Ex dem [ia/ib] T6..T3
in terminal box. Use a cable length
replace unused cable glands
15