Technical documentation - W.E.ST. Elektronik GmbH

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W.E.ST. Elektronik GmbH General IO description This description is a general description of the technical data of out open loop and closed loop control modules. Please check the implemented IO signals via the block diagram about availability. Power supply This module is designed for 10… 30 VDC (typical 12 V or 24 V) of a power supply. This power supply must correspond to the actual EMC standards. All inductivities at the same power supply (relays, valves …) must be provided with an over voltage protection (varistors, free-wheel diodes …). It is recommended to use a regulated power supply (linear or switching mode) for the supply of the module and the sensors. These power supplies have a clearly lower internal resistance in comparison with non regulated power supplies and therefore a better spurious rejection. Power supply : 10… 30 VDC, incl. ripple Power consumption: 100 mA + solenoid current consumption External protection: 5 A fast ATTENTION: Without an external fuse and in case of a continual short-circuit the module can be destroyed in spite of all internal protections. Digital inputs The digital inputs are designed for a voltage level of 12 V and 24 V. The typical connections to the PLC will not be screened if the modules are arranged carefully and with short cable lengths. As common potential 0V (PIN 4) is used. All inputs are protected with suppressor diodes and RC-filters against transient overshoots. Low level: < 2 V High level: > 10 V Current: < 0,1 mA Digital outputs The digital outputs are designed for a voltage level of 12 V and 24 V. The typical connections to the PLC will not be screened if the modules are arranged carefully and with short cable lengths. As common potential 0V (PIN 4) is used. All outputs are protected with suppressor diodes and RC-filters against transient overshoots. Low level: < 2 V High level: > 10 V Current: max. 50 mA (with load of 200 Ohm) Seite 10 von 22 12.03.2008
W.E.ST. Elektronik GmbH Analogue inputs The analogue inputs are designed for a maximum voltage range of 10 V. The voltage input is typically ±10 V and the current input is 4… 20 mA with 12 mA for the center position of the directional valve. The inputs are protected with suppressor diodes (level 33 V) and RC-filter against transient overshoots. All analogue inputs must be screened. Differential input: Voltage level: unipolar 0… 10 V to PIN 9 / PIN 10 and 0…10 V to PIN 13 / PIN 14 input resistance: 100 kΩ Current level: unipolar 4… 20 mA (PIN 9 to PIN 10 / PIN13 to PIN14) input resistance: app. 390 Ω Cable break down are monitored via the READY output and a flashing green LED. PWM outputs The output current is controlled via closed loop PWM current controller with PI characteristics. For high flexibility PWM frequency, dither frequency, dither amplitude and the PI compensator are free configurable. Cable break down and short cuts are monitored via the READY output and a flashing green READY LED. The outputs are protected with suppressor diodes (level 33 V) and RC-filter against transient overshoots. PWM: Output current: max. 2,6 A 1 Frequency: 100… 7700 Hz Serial interface The serial interface is chosen for the parametering with a PC or a notebook. A suitable cable of 3,5mm JISC-6560 plug to 9pol. RS232 (PC compatible) can be bought under RS232-SO. You can parameterize our modules with each terminal program. However, by use of our application software WPC-300 you have enlarged functions and therefore it is preferable. Download: WWW.WEST-ELECTRONICS.COM or WWW.W-E-ST.DE Features: • Table orientated parametering • Saving and loading of the parameter sets • Process data monitoring • Oscilloscope for dynamical optimization of the control parameters • Terminal window for flexible data input 1 The output current can be adjusted in % of the rated current or directly in mA. In case of mA adjustment, the “current” command should not be used. Seite 11 von 22 12.03.2008
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: Block diagram Power supply 12 /24 V
Page 9: Technical Data Power supply Current
Page 13 and 14: Parameter table W.E.ST. Elektronik
Page 15 and 16: Parameter description S (setpoint p
Page 17 and 18: W.E.ST. Elektronik GmbH Flow charac
Page 19 and 20: SENS (sensor monitoring) W.E.ST. El
Page 21 and 22: SAVE (data storing in EEPROM) W.E.S

Technical documentation - W.E.ST. Elektronik GmbH

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