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Quick Start Guide
3
Electrical installation
3.1
Wiring considerations
Note
See the Rosemount 2555
specifications.
3.1.1
Handling
In cases of improper handling or handling malpractice, the electrical safety
of the device cannot be guaranteed.
3.1.2
Grounding (earthing)
Before any electrical installation, connect the internal or external Potential
Earth (PE) terminal to a grounding point at the installation site if the
Rosemount 2555 is mounted to a non-metal silo or other storage vessel.
Note
See
Wiring the level switch
3.1.3
Installation regulations
Local regulations or VDE 0100 (Regulations of German Electrotechnical
Engineers) must be observed.
When using 24 V supply voltage, an approved power supply with reinforced
insulation to mains is required.
3.1.4
Fuse
Use a fuse as stated in the connection diagrams.
For details, see
3.1.5
Residual Current Circuit Breaker (RCCB) protection
In case of a defect, the distribution voltage must automatically be cut-off by
an RCCB protection switch to protect against indirect contact with
dangerous voltages.
3.1.6
Power supply
Power supply switch
A voltage disconnection switch must be provided near the device.
Supply voltage
Compare the supply voltage applied with the specifications given on the
electronic module and nameplate before switching on the device.
14
Product Data Sheet
for the location of the PE terminals.
Wiring the level
switch.
for the full electrical
Quick Start Guide
October 2020
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