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MIN (compensation of the dead zone) MAX (maximum output signal) TRIGGER (threshold value of MIN) W.E.ST. Elektronik GmbH Commands Parameter Defaults Units min:i x max:i x trigger x i= A|B x= 0… 5000 x= 5000… 10000 x= 0… 2000 - 0 10000 200 Seite 20 von 24 - 0,01% 0,01% 0,01% With this command, the output signal is adjusted to the valve characteristics. The positioning controllers have a double-gain characteristic curve instead of a typical overlapped jump. The advantage is a better and more stabile positioning behaviour. With this compensation, non-linear volume flow characteristic curves can be adjusted too. MIN:B MAX:B ATTENTION: If there exist also possibilities for adjustments at the valve or at the valve electronics, it has to be guaranteed, that the adjustment has to be carried out at the power amplifier or at the positioning module. If the MIN value is set too high, it influences the minimal velocity, which cannot be adjusted any longer. In extreme case this causes to an oscillating around the closed loop controlled position. Output two flow gain characteristics TRIGGER standard deadband compensation Input MAX:A MIN:A
INPOS (in positioning window) W.E.ST. Elektronik GmbH Commands Parameter Defaults Units inpos x x= 2… 2000 200 0,01% This parameter is used in 0,01% units. The INPOS command defines the window where the INPOS message is indicated. The positioning process is not influenced by this message. The controller remains active. In NC-mode this message has to be interpreted alternatively as following error. OFFSET (zero point adjustment) Commands Parameter Defaults Units offset x x= -2000… 2000 0 0,01% This parameter is entered in 0,01% units. The corresponding OFFSET will be added to the control error (demand value - actual value + offset). With this parameter the zero point failure can be compensated. POL (output polarity) Commands Parameter Defaults Units pol x x= +|- + - The output polarity of the controller can be switched over. SENS (sensor monitoring) Commands Parameter Defaults Units sens x x= ON|OFF ON - The sensor monitoring can be activated (with 4… 20 mA sensors). SAVE (data storing in EEPROM) Commands Parameter Defaults Units save - - - Every parameter change is immediately active but only saved in RAM. For permanent storing in EEPROM the command SAVE is used to copy the parameter from RAM into EEPROM memory. Seite 21 von 24
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 and 16: Parameter table W.E.ST. Elektronik
Page 17 and 18: D (deceleration stroke or braking d
Page 19: W.E.ST. Elektronik GmbH TH (Stroke
Page 23 and 24: W.E.ST. Elektronik GmbH Appendix: P

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