STEINEL P640 KNX Manual De Instrucciones página 20

Power Supply P640 KNX, Power Supply P1280 KNX
Figure 6: Application example – KNX binary input on main line for detecting and cent-
Observe the wiring! Install the cables for the signal contact such that no loops
are created. During operation loops can cause interference voltages to be
coupled into.
The signal contact indicates a power failure on the KNX line. When voltage
supplies are connected in parallel, the signaling contact opens only if both
voltage supplies are faulty or switched off (e.g. due to failure of the mains
voltage on both devices).
In this case too, the green operation LED will not extinguish until both power
supplies are switched off.
Operation with emergency power systems
The voltage supply can be used in combination with centrally supplied emergency
power systems. In this way, the function of the KNX system and the control of the
most important functions can be ensured in emergency operation.
Statutory and standard specifications for emergency power and emergency
lighting systems vary from country to country. In any event, the user / technical
planner must check whether the specific specifications are observed.
Cable lengths
For KNX line segments and power supplies the following rules apply:
82597336
rally signalling diagnostic messages
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