User Manual

13
4 Electrical connection
4.1 Installation notes
- The choice of cable, the installation and the electrical connection must conform to
the requirements of VDE 0100 “Regulations on the Installation of Power Circuits
with Nominal Voltages below 1000 V” or the appropriate local regulations.
- The electrical connection must only be carried out by qualified personnel.
- If contact with live parts is possible while working on the unit, it must be
disconnected from the supply on both poles.
- A fuse interrupts the supply circuit in the event of a short-circuit. The load circuit
must be fused for the maximum relay current, in order to prevent the output relay
contacts becoming welded in the event of a short circuit.
- Electromagnetic compatibility conforms to the standards and regulations cited in
the technical data.
v Chapter 12.1 “Technical data”
- Run input, output and supply cables separately and not parallel to one another.
- Sensor and interface cables should be shielded cables with twisted conductors.
Do not run them close to current-carrying components or cables. Ground the
shielding on one side.
- Do not connect any additional loads to the supply terminals of the instrument.
- The instrument is not suitable for use in areas with an explosion hazard (Ex areas).
- In addition to faulty installation, incorrect settings on the controller (setpoint, data
of the parameter and configuration levels, internal alterations) can also interfere
with the correct operation of dependent processes, or even cause damage. Safety
devices should always be provided that are independent of the controller (such as
overpressure valves or temperature limiters/monitors) and only capable of
adjustment by specialist personnel. Please observe the relevant safety regulations
for such matters. Since adaptation (self-optimization) can not be expected to
handle all possible control loops, an unstable parameterization is theoretically
possible. The stability of the actual value that is produced should therefore be
checked.