Карта заданного значения и рампы VT-SWKA1-1X

Description Component series 1X Analog, Euro-card format For controlling valves with integrated or external electronics Features Differential inputs for voltage and current Four callable command value inputs, input for ramp time Digital inputs for enable, ramp, inverting and command value call-up Control outputs for voltage and current Ramp time selection with quadrant recognition Reverse polarity protection for the operating voltage Switchable measuring socket "Ready for operation" output Characteristic curve correction through separately adjustable step-change heights and maximum values Product description General information The command value card is set up as printed circuit board in europe format and suitable for installation in a rack. An internal power supply unit [1] supplies all internally required positive and negative supply voltages. If the power supply unit is in operation and no error is detected, the green LED on the front plate is lit and the "ready for operation" signal is set. Current input [3] There is no switch-over between current and voltage input. Both inputs are permanently available (see terminal assignment). The input signals are internally normalized and added up. The zero point and the value range of the current input can be switched using jumper J5. Command value call-ups [4] Four command value signals "w1" to "w4" can be called up. The external command value voltages (command value 1 to 4) are either defined directly by the regulated voltage outputs +10 V and –10 V or by external potentiometers. If these command value inputs are directly connected to the regulated voltages, the command values are set at the potentiometers "w1" to "w4". When using external potentiometers, the internal potentiometers will function as attenuators or limiters. Only one call-up can be operated at a time. If several call-ups are operated simultaneously, call-up "1" has the lowest priority and call-up "4" has the highest priority. The respective active call-up is indicated by a yellow LED on the front plate. Command value inversion [7] The command value created internally from the input signals, the command value call-ups and the zero point offset signal can be inverted by an external signal or jumper J1. If an external inverting signal is connected, this is indicated by an LED ("–1") on the front plate. Enable function [8] The enable function switches the input signal of the ramp generator on or off. If enable is switched on or off, the control output changes with the set ramp time irrespective of the command value. Thus, a controlled valve does not open or close abruptly. If an error signal occurs, the ramp generator input signal is also set to 0 %. The enable signal is indicated by an LED on the front plate. Ramp generator [9] The ramp generator limits the incline of the control output. The downstream step functions and amplitude attenuators do not extend or shorten the ramp time. Using jumper J2, the ramp time is set to a minimum ( Exte