5 Electrical connections
5.2.1 Signal Classes
82 A 3HAC 16245-1
Section 5.2: Signal connections
5.2.1 Signal Classes
Overview Different rules apply to the different classes when selecting and laying cable. Signals from
different classes must not be mixed.
Signals
• Power Signals: Supplies external motors and brakes.
• Control signals: Digital operating and data signals (digital I/O, safety stops, etc.).
• Measuring signals: Analog measuring and control signals (resolver and analog I/O).
• Data communication signals: Gateway (Field bus) connection, computer link.
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