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1SVR730006R0000 Datasheet(PDF) 3 Page - List of Unclassifed Manufacturers |
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3 / 18 page Data sheet | Voltage monitoring relay CM-EFS.2 - 3 Functions Operating controls 1 Adjustment of the threshold value >U for overvoltage 2 Adjustment of the threshold value <U for undervoltage 3 Indication of operational states U/T: green LED – control supply voltage/timing R: yellow LED – relay status U: red LED – over- / undervoltage 4 Adjustment of the measuring range 5 Adjustment of the tripping delay TV 6 DIP switches (see DIP switch functions) Application The voltage monitoring relays CM-EFS.2 are designed for use in single-phase AC and/or DC systems for the simultaneous monitoring of over- or undervoltages as well as detection of phase loss. Depending on the configuration, one c/o (SPDT) contact each or both c/o (SPDT) contacts in parallel can be used for the over- and undervoltage monitoring. The devices operate over an universal range of supply voltages and provide an adjustable tripping delay. Open or closed-circuit principle as well as ON of OFF delay tripping are configurable. Operating mode The CM-EFS.2 have 2 c/o (SPDT) contacts and include 4 measuring ranges: 3-30 V, 6-60 V, 30-300 V and 60-600 V. The units are adjusted with front-face operating controls. The selection of: ON-delay A or OFF-delay B, open- h or closed-circuit principle g, latching function ON f or OFF e and 2x1 c/o i or 1x2 c/o (SPDT) contacts j is made with DIP switches. Potentiometers, with direct reading scale, allow the adjustment of the threshold valuemax (>U) for overvoltage, the threshold valuemin (<U) for undervoltage and the tripping delay TV . The tripping delay TV is adjustable over a range of instantaneous to a 30 s delay. The hysteresis is fixed at 5 %. Timing is displayed by a flashing green LED labelled U/T. 1 3 2 4 5 6 ! Whencomparedwithourpreviousversion,the position of the adjustment potentiometers 4 and 5 have changed places. |
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