AS-Interface power supplies / earth fault monitors

24 V DC power supplies

These high-quality 24V switched-mode power supplies excel by their wide range of performance. Flexible one-phase or three-phase primary voltages with wide-range inputs can be used worldwide. Degrees of efficiency of up to 94 percent ensure that the control cabinet only heats up slightly. The units are protected against overvoltage and permanent short circuit.
Type
housing for rail mounting
Nominal voltage
115 / 230 V AC selectable (single-phase) 100...240 V AC (1-phase) 380...480 V AC (2-phase) 400...500 V AC (three-phase) 380...480 V AC (three-phase)
Number of output voltages
1 output voltage
Output voltage
12 V DC 24 V DC
Output current
up to 3 A up to 5 A up to 10 A up to 20 A up to 40 A
 

AS-i power supplies

All AS-i power supplies are primary switched-mode power supplies with a high degree of efficiency. The robust DIN rail housing can be easily integrated in large control cabinets as well as in local boxes. The primary voltage range stretches from 24 V DC via 230 V AC up to 400 V AC three-phase and can consequently be adapted to the local conditions.
Type
housing for rail mounting
Nominal voltage
24 V DC (1-phase) 115 / 230 V AC selectable (single-phase) 100...240 V AC (1-phase) 400...500 V AC (three-phase) 380...480 V AC (three-phase)
Number of output voltages
1 output voltage 2 output voltages
Output voltage
24 V DC AS-i 29,5 to 31,6 V DC
Output current
up to 1 A up to 3 A up to 5 A up to 10 A
System
integrated earth fault monitor
 

Earth fault monitors

Earth fault monitors are not compulsory for AS-i networks. But as AS-i voltage supplies are free-of-ground PELV networks, it may be necessary to detect an earth fault which, alone, most of the time has no consequences. A second earth fault occurring later on however may lead to dangerous cross-faults which may permanently switch electrical outputs. The assessment of this risk should therefore be part of the overall machine concept.
Type
housing for rail mounting
Measuring principle
passive
Number of signal contacts
2x (relay)
 

Insulation monitor

Insulation fault monitors function similarly to earth fault monitors. However, the evaluation of the earth fault is carried out in a much more complex way, so that symmetrical earth faults can also be detected and signalled. The two potential-free signal contacts can be integrated in the emergency stop circuit or trigger a signalling lamp, or they can be wired onto a digital input.
Type
housing for rail mounting
Measuring principle
active
Number of signal contacts
2x (relay)
 

More information

System description - AS-Interface power supplies / earth fault monitors