WIKA SC64 - Handbuch (Seite 13)

13 WIKA operating instructions models SC58, SC64
14054366.01 10/2012 GB/D
GB
6. Commissioning, operation
Electrical connection
■ Only appropriately-qualified skilled personnel should carry out the
electrical connection.
■ During the installation and connection of the controller and in the
choice of cable material used, the applicable requirements of
VDE 0100 „Regulations on the installation of power systems with rated
voltages below 1,000 V“ must be complied with.
■ When switching contactors and other inductive loads, this can cause
a malfunction and, in extreme cases, damage to the controller. It is
recommended to fit contactor coils with surge suppressors.
■ The controller and its connected installations contain live elements.
The housing must not be opened by the customer under any
circumstances. For any possible contact with live elements, the
instrument is to be separated 2-pole from the mains.
■ All sensor and signal wires must be separated from the powered and
mains wiring and not parallel to each other, in order to avoid capacitive
or inductive coupling. If possible, use screened cable.
■ Ground the controller with the protective earth conductor. To avoid
ground loops and fault currents, provide a common ground terminal
for all ground wires, which is itself connected to the ground lead of the
power supply (no ground wires between different controllers).
■ Do not connect any other loads to the mains terminals of the
controller.
■ Do not use the controller in a hazardous area.
6. Commissioning, operation