Threshold switches KM 211
· six measuring ranges, from 10mV...200V
· high accurate
· wide-range power supplies 19Vdc...255Vac
The threshold switch KM211 can capture DC voltages of
10mV...200V. In order to be able to exactly set the desired
limit value, the total range is divided into 6 measuring
ranges as specified in the technical data.
Fine adjustment in one measuring range is made by
means of a trimmer in the front panel. The direction of the
signal to be monitored can be separately preselected on
two dip switches (+/-). When both switches are closed
(state upon delivery) the comparator operates symmetrically.
The switching hysteresis can be adjusted from
2...40% by means of another helical trimmer without
changing the switch threshold during such adjustment.
A LED indicates that the preset limit value has been
reached. For control purposes, a potential free changeover
contact and a optocoupler output is at disposal. Devices with a much shorter switching time or for
inverting switching are available upon request.
The device have a galvanic separation wide-range power
supply, that allows a connection at all usual ac and dc
supply voltages (19Vdc...255Vac). They can be snap-on
mounted onto support rails TS35.