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Parameter description AIN (input signal scaling) W.E.ST. Elektronik GmbH Commands Parameter Defaults Units ain:i a b c x i= W|X a= 0… 10000 b= 0… 10000 c= -10000… 10000 x= V|C : 1000 : 1000 : 0 : V Seite 16 von 24 - - 0,01% - With this command each input can be scaled individually. For the scaling function the following linear equation is taken. a y = ⋅ − b ( x c) x is the input signal and y is the output signal. At first the offset (c) will be subtracted (in 0,01% units) from the input signal, then the signal will be multiplied with factor a / b. a and b should always be positive. With these both factors every floating-point value can be simulated (for example: 1.345 = 1345 / 1000). With the x parameter value the internal measuring resistance for the current measuring (0… 20 mA or 4… 20 mA) will be activated (V for voltages input and C for current input). AIN:xx a b c x i with voltage (V): AIN:i 1000 1000 0 V i with current (C): AIN:i 1250 1000 2000 C Inverted (sensor works from 10 V to 0 V) AIN:xx a b c x i with voltage (V): AIN:I -1000 1000 10000 V A (acceleration time) Commands Parameter Defaults Units a:i x i= A|B x= 0… 2500 :A 100 :B 100 This parameter is set in ms. The ramp time is separately set for driving out (A) and for driving in (B). ms ms
D (deceleration stroke or braking distance) W.E.ST. Elektronik GmbH Commands Parameter Defaults Units d:i x i= A|B x= 0… 10000 :A 2500 :B 2500 Seite 17 von 24 0,01% 0,01% This parameter is set in 0,01% units of the maximum length of the sensor. The braking distance is set dependent from the direction. The controller gain will be calculated by means of the braking distance. The shorter the braking distance the higher the control gain (see command CTRL). In case of instabilities a longer braking distance should be set. CTRL (braking characteristics) Commands Parameter Defaults Units ctrl x x= lin|sqrt1 |sqrt2 sqrt1 - With this parameter, the braking characteristic of the hydraulic axis is controlled. With positive overlapped proportional valves one of both SQRT braking characteristics should be used. The nonlinear flow curve of the valves is mostly linearized by the SQRT function. If zero overlapped proportional valves (control valves) are used, you can choose between LIN and SQRT1 according to the application. The progressive gain characteristic of SQRT1 has the better positioning accuracy. According to the application there is maybe a longer braking distance, so that the total stroke time will be longer. LIN: Linear braking characteristics (control gain corresponds to: 10000 / d:i). SQRT1: Root function for the calculation for the braking curve. The control gain goes up quadratic with a small control error (control gain corresponds to: 30000 / d:i). This characteristic is preferably used with positive overlapped proportional valves. SQRT2: Root function for the calculation for the braking curve. The control gain goes up quadratic with a small control error (control gain corresponds to: 50000 / d:i). Velocity CTRL = LIN Braking stroke D:A or D:B Stroke CTRL = SQRT
Page 1 and 2: W.E.ST. Elektronik GmbH Technical d
Page 3 and 4: Revisions W.E.ST. Elektronik GmbH D
Page 5 and 6: General installation remarks Explan
Page 7 and 8: In- and outputs W.E.ST. Elektronik
Page 9 and 10: Typical wiring PLC Inputs PLC Outpu
Page 11 and 12: W.E.ST. Elektronik GmbH General IO
Page 13 and 14: W.E.ST. Elektronik GmbH As current
Page 15: Parameter table W.E.ST. Elektronik
Page 19 and 20: W.E.ST. Elektronik GmbH TH (Stroke
Page 21 and 22: INPOS (in positioning window) W.E.S
Page 23 and 24: W.E.ST. Elektronik GmbH Appendix: P

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