Power supplies and earth fault monitors

Power supplies

AS-i switched-mode power supplies are a necessary and essential part of an AS-interface network. They generate a regulated DC output voltage be-tween 29.5 V and 31.6 V according to the AS-i specification. All power supplies comply with the PELV requirements of EN 50178 and EN 60204.

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Earth fault monitors

The earth fault / insulation monitoring device which can be installed in the existing AS-i system without any problems is available from ifm in two designs: The earth fault monitor uses a passive measuring procedure and measures the displacement voltage between phase conductors and plant ground (earth). The insulation monitoring device detects symmetrical as well as asymmetrical earth fault or insulation faults by means of an active measuring method.

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