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Controllers
4.4 Relay outputs
Connection
Risk of injury from dangerous electrical voltages
When the housing cover of the controller is open, only a safety extra-low voltage of less
than 42 V may be present. The protective cover provided must be used when a higher
voltage (max. 230 V AC) is connected to the relay module. Please follow the procedures
described below for connecting a relay module.
Terminal circuit diagram of the relay contacts
Procedure
Note
Specifications for connecting the relay module
• The cables connected must be suitable for the voltage used and have appropriate (double
or reinforced) insulation. Cables with an external diameter of 6 to 7 mm are
recommended.
• Components of the controller and connecting cable, such as the motor plug and its wires,
may only come in contact with the additional (or reinforced) insulation of the current-
carrying wires.
• Networks with different voltages (for example 24 V and 230 V) must not be connected to
the relay module.
42
DANGER
SIDOOR ATD400T door control units for railway applications
System Manual, 06/2020, A5E42201947-AB
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