ABB TTH300 Series, Instructions Manual

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Electrical connection
10 - EN TTH300 CI/TTH300-EN
4 Electrical connection
Warning – Electrical voltage risk!
Observe the corresponding instructions for the electrical installation. Only connect in dead-
voltage state!
Since the transmitter has no switch-off elements, overvoltage protection devices, lightning
protection or voltage separation capacity must be provided on the plant side.
Energy supply and signal are routed in the same line and are to be implemented as SELV or
PELV circuit according to norm (standard version). In the ignition-proof version, the guidelines
according to the ignition-proof norms are to be adhered to.
It must be checked whether the existing power supply corresponds with the specifications on
the name plate and the technical specifications (see “Technical Specifications" chapter and/or
data sheet).
Note
The electrical connection is carried out with the transmitter in the installed state.
The signal cable wires must be provided with wire end sleeves.
The cross-head screws of the connection terminals are tightened with a size 1 screwdriver
(3.5 mm or 4 mm).
4.1 Conducting material
• Standard conducting material must be used for the voltage supply cable.
• The maximum connectable conductor cross-section amounts to 1.5 mm
2
.
Caution – Damage to parts!
The use of rigid conducting materials can lead to a wire break.
The connection cable must be flexible.