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W.E.ST. Elektronik GmbH Start-up and commissioning guidelines 1. The module must be mounted and wired with attentions to EMC requirements. A star orientated ground connection should be used when other power consumers are sharing the same power supply. Following points have to be taken in account for wiring: • Signal cable and power cable have to be wired separately. • Analogue signal cables must be screened. • Other cables should be screened in case of strong electrical disturbance (power relays, frequency controlled power driver) or at cable lengths > 3m. With high frequency EMI inexpensive ferrite elements can be used. In this typical configuration of installation (see point 2 to 4), no extra step should be taken in consideration. 2. By the arrangement of the electrical cabinet a separation between the power part (and power cables) and signal part must be taken in consideration. Experience shows us that the area next to the PLC (24 V area) is suitable. 3. Low impedance between PE “protected earth” and DIN-Rail should be used. Transient interference voltages at the terminals are discharged via DIN-Rail to the local PE. The screens have to be connected directly next to the module via PE terminals. 4. The power supply should be carried out voltage regulated (i. e. PWM controlled). The low impedance of controlled power supplies facilitates improved interference damping. Therefore the signal resolution will be increased. Switched inductance (relays and solenoids) operating from the same power supply has to be damped by surge protection elements directly by the inductance. 5. According to the motion diagram, the power amplifier- / valve- / drive combination should drive out with positive output signal (PIN 15 to PIN 16) and the output voltage of the sensor heightens. ATTENTION: This output is a differential output. Both outputs may not be connected with 0V. Seite 14 von 24
Parameter table W.E.ST. Elektronik GmbH Commands Parameter Defaults Units Description ain:i a b c x i= W|X a= -10000… 10000 b= -10000… 10000 c= -10000… 10000 x= V|C a:i x i= A|B x= 1… 2000 d:i x i= A|B x= 10… 10000 ctrl x x= lin|sqrt1 |sqrt2 : 10000 : 10000 : 0 : V :A 100 :B 100 :A 2500 :B 2500 - - 0,01% - ms ms 0,01% 0,01% Seite 15 von 24 Analogue output selection. W and X for the inputs and V = voltage, C = current. With the parameters a, b and c the inputs can be scaled (output = a / b * (input - c)). Because of the programming of the x-value (x = C) the corresponding input will be switched over to current automatically. Acceleration time depending on direction. A indicates analogue output 15 and B indicates analogue output 16. Normally A = flow p-A, B-T and B = flow P-B, A-T. Deceleration stroke depending on direction. The loop gain is calculated by the deceleration stroke. The shorter the higher. In case of instabilities longer deceleration stroke will be sufficient. sqrt1 - Selection of the control function: lin = standard linear P-control, sqrt1 = progressive time optimized deceleration curve, sqrt2 = sqrt1 with a higher gain in position velo x x= 1000… 10000 10000 0,01% Internal limitation of the velocity. This limitation is active when command vs = off. vs x x= ext|int int - Activates the external velocity limitation with the parameter EXT. vramp x x= 1… 2000 50 ms Ramp time for velocity input. vmode x x= on|off off - Activation of the NC-generator. The command position is generated by a velocity profile (internal or external preset of v). The axis drives more or less speed controlled. th x x= 100… 60000 5000 ms Stroke time for 100% velocity and 100% nominal sensor stroke. hand:i x i= A|B x= -10000… 10000 min:i x i= A|B x= 0… 5000 max:i x i= A|B x= 5000… 10000 :A 3300 :B -3300 :A 0 :B 0 :A 10000 :B 10000 0,01% 0,01% 0,01% 0,01% 0,01% 0,01% Degree of output signal in manual mode Deadband compensation of positive overlapped proportional valves. Good adjustment will increase positioning accuracy. Maximum output range for adapting control range to maximum flow range. trigger x x= 0… 2000 200 0,01% Point to activate the deadband compensation (min). Also useful for reduced sensitivity in position with control valves. inpos x x= 2… 2000 200 0,01% Range for the InPos signal (status output). offset x x= -2000… 2000 0 0,01% The offset will be added to the command value. pol x x= +|- + - For changing the output polarity. All A and B adjustments depend on the output polarity. The right polarity should be defined first. sens x x= on|off on - Activation of the sensor and internal failure monitoring. save - - - Storing the programmed parameter in E²PROM. loadback - - - Reloading the parameter from E²PROM in working RAM din - - - Status of the digital inputs. w, x, xw, u ,v - - - Actual signals: command value, actual value, process data, control divergence and reference value. default - - - Preset values will be set.
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: W.E.ST. Elektronik GmbH As current
Page 17 and 18: D (deceleration stroke or braking d
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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