The GND (U
L
) is not grounded in the device!
Overvoltage category I, 24 V
FE
PE
Power supply unit
Separable
connections
24 V
0 V
Fig. 13: Structure of the supply voltage
Control does not start in case of reverse input voltage
The feeding of 24 V at the XD10 connector is protected against polarity reversal. A polarity
reversal of U
L
and GND feeding does not damage the device. However, the control does not
start and the status display is not on.
Dimensioning the voltage supply
Observe the maximum currents when dimensioning the voltage supply. The operating voltage allowed
has to be applied directly to the device.
The voltage must also not be exceeded if:
• there are variations in line voltage, e.g. caused by different loads of the mains
• there are varying load states, such as short-circuit, normal load, lamp load or no load
Connecting the reference conductor to the protective conductor
If the reference conductor 0 V (U
L
) is connected to the protective conductor system, this connection
has to be arranged at a central place (e.g. at the load power supply unit). Hence, the supply current
circuit is a PELV circuit.
Mounting, dismounting and electric installation
To Next Page
Loading...
Need help?
General
