Description Component series 1X Analog, Modular design For valves: (Z)DRS 6 Features Command value input for voltage or current Ramp generator with separately adjustable ramp times "up/down" Adjustable zero point and sensitivity Elektronische Endanschläge für den Stellantrieb Integrierte Druckschalterfunktion mit einstellbaren Schaltschwellen Lageregler mit „Positionssollwert erreicht“-Erkennung LED display for the "ready for operation" status, enable and error Switchable measuring socket Product description General information The amplifier module is snapped onto top hat rails according to EN 60715. It is electrically connected via 4 plug-in screw connectors with 4 ports each. The module is operated with 24 V direct voltage. Power supply unit [1] An internal power supply unit supplies all internally required positive and negative supply voltages. Pressure command value presetting [2] The internal pressure command value signal is generated from the external pressure command value signal available at input [2] and the zero point offset [2] (Zw zero point potentiometer on the front side). If the pressure command value increases/decreases, the pressure rises/falls. The differential input can be configured into a 4 to 20 mA current input via DIL switches S1.1 to S1.6 (see commissioning instructions). Standard values Current input Differential input Command value at measuring socket "v" (position 0) 0 % 4 mA 0 V 0 V 100 % 20 mA +10 V +10 V A cable break in a pressure command value line will be detected ("ready for operation" output) and deactivate the output stage. Ramp generator [3] In the ramp generator [3], a provided step signal is turned into a ramp-shaped output signal. The ramp time relates to a pressure command value modification of the input signal of 100 %. The ramp time is not extended or shortened by the downstream pressure command value attenuator [4]. The ramp times for pressure increase or pressure reduction can be set separately on the front side of the module using potentiometers "t ". The current ramp time values can also be checked or pre-set via the switchable measuring socket (also located on the front side). Information on ramp time adjustment: Value at measuring socket "v" (position 4 or 5) Usocket/V 10 5 3 2 1 0.5 0.1 0.05 0.03 0.02 0.01 Current ramp time (±20 %) t/s 0.1 0.2 0.33 0.5 1 2 10 20 33.3 50 100 Calculation of the ramp times: The following applies: U = Voltage in volt at measuring socket "v" t = Ramp time in seconds for upwards and downwards ramp Pressure command value attenuator Gw [4] The Gw potentiometer acts as an attenuator [4] and determines the maximum internal pressure command value. The setting range lies between 0 % and 130 %. Linearization of the valve characteristic curve [5] The linearization [5] is used to compensate the non-linear valve characteristic curve. The required valve position command value is generated from the pressure command value. Amplitude limiter [6] The amplitude limiter [6] limits the
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