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WEST PAM-190-P Series, Technical Documentation Manual

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WEST PAM-190-P Series Technical Documentation Manual Download Page 21

 

Page 21 of 24 

PAM-190-P-A/I 

05.06.2020 

 

5.5.4 

PWM (PWM Frequency) 

 

Command

 

Parameter

 

Unit 

 

Group 

 

PWM 

X 

x= 60… 2650 

Hz 

STD

 

 

This parameter is entered in Hz. The optimum frequency depends on the valve. 

 

CAUTION: when using low PWM frequencies the PPWM and PPWM parameters should be  
adjusted

4

.

  

 

The PWM frequency can only be set in defined steps. This means that there are deviations between 
the specified and the actual frequency. The next highest frequency step is always used. 

 

 

 

 

5.5.5 

PPWM (P gain of the current loop) 

5.5.6 

IPWM (I gain of the current loop) 

 

Command

 

Parameters

 

Unit 

 

Group

 

PPWM 

X 

IPWM 

X 

x= 0… 30 
x= 1… 100 

- 
- 

EXP

 

 

The PI current controller for the solenoids is parameterized with these commands. 

 

 

CAUTION

: These parameters should not be changed without adequate measurement facilities and 

experience. 

 

 

If the PWM frequency is < 250 Hz, the dynamic of the current controller has to be decreased. 
Typical values are: PPWM = 1… 3 and IPWM = 40… 80. 
If the PWM frequency is > 1000 Hz, the default values of PPWM = 7 and IPWM = 40 should be chosen. 

 

 

                                                      

4

 Due to the longer dead times at low PWM frequencies the stability of the control circuit is reduced. Typical values are 

then: PPWM = 1… 3 and IPWM = 40… 70.    

Summary of Contents for PAM-190-P Series

Page 1: ...Technical Documentation PAM 190 P Amplifier plug for proportional valves ...

Page 2: ...rameters 15 5 1 Parameter overview 15 5 2 Basic parameters 16 5 2 1 LG Changing the language 16 5 2 2 MODE Parameter view 16 5 3 InSignal adaptation 17 5 3 1 AIN Analogue input scaling 17 5 3 2 LIM Signal monitoring 18 5 3 3 R Command signal ramp time 18 5 4 Output signal adaptation 19 5 4 1 MIN Deadband compensation 19 5 4 2 MAX Output scaling 19 5 4 3 TRIGGER Response threshold for the MIN param...

Page 3: ...PAM 193 P Amplifier with potentiometers and DIL switches for top hat rail mounting PAM 199 P Universal digital amplifier with USB interface for top hat rail mounting 1 2 Scope of supply The scope of supply includes the module plus the terminal blocks which are part of the housing The Profibus plug interface cables and further parts which may be required should be ordered separately This documentat...

Page 4: ... The data and characteristics described herein serve only to describe the product The user is required to evaluate this data and to check suitability for the particular application General suitability cannot be inferred from this document We reserve the right to make technical modifications due to further development of the product described in this manual The technical information and dimensions ...

Page 5: ...on by trained specialist staff The instruction manual must be read with care The installation instructions and the commissioning instructions must be followed Guarantee and liability claims are invalid if the instructions are not complied with and or in case of incorrect installation or inappropriate use CAUTION All electronic modules are manufactured to a high quality Malfunctions due to the fail...

Page 6: ...ier plug all typical proportional valves of the different manufactures can be optimal adapted Typical applications Controlling of the solenoid of proportional throttle or pressure valves Features Power amplifier for proportional valves located in a DIN EN 175 301 803 A plug housing Digitally reproducible adjustments Free scaling of the input signal Also usable as Soft Switch amplifier soft switch ...

Page 7: ...9 0 Selection Switch Dreh schalter Button Down Taste Ab Button Up Taste Auf Operation LED Funktions LED Parameter LED Parameter LED M12 Plug 5pol IEC 61076 2 101 M12 Version Rectangle Plug Rechteck Verbinder Type A EN 175301 803 Rubber seal Dichtung Type label Typenschild Pin layout M12 5 plug ...

Page 8: ...ening must be taken into account in all cases The screening should be connected to at both ends Equipotential bonding must be provided where there are differences between the connected electrical components With longer lengths of cable 10 m the diameters and screening measures should be checked by specialists e g for possible interference noise sources and voltage drop Particular care is required ...

Page 9: ...ively the set up can be done by the internal parameter selector and the UP and DOWN buttons Pre parameterization Parameterize now with the help of the system redundancy and the connection diagram the following parameters The ANALOGUE INPUT the output CURRENT and the typical valve parame ter DITHER and MIN MAX Pre parameterization is necessary to minimize the risk of an unintentional movement press...

Page 10: ...ing no parameter input see LED defini tions 9 Setpoint monitoring no parameter input see LED defini tions 3 3 2 Procedural method 1 Press a button or turn the selector switch which activates the manual adjustment mode The parameter LED flashes 2 Select the desired parameter 1 6 by the selector switch 3 The parameter LED indicates by flashing the parameter mode a At the lower boundary the LED light...

Page 11: ...ctive Diagnostics The LED frequency starting with OFF up to continuously ON indicates the input output signal status Switch position 8 output current is displayed Switch position 9 setpoint value is displayed Connection Supply PIN 1 Power supply see technical data PIN 3 0 V GND connection Connection Analogue signals PIN 2 Differential Command signal input signal range 0 10 V or 4 20 mA scalable PI...

Page 12: ...06 2020 4 3 Circuit diagram 1 3 2 4 5 Input Scaling PE via DIN PLUG PAM 190 P 0 V Valve Adaptation w u Control program Ramp Generator Input DC DC c Power Stage ia To the solenoid Differential input LIN Bus Communication Power supply ...

Page 13: ... 9 0 Valve Ventil USB Plug Socket to PC USB Buchse zum PC ULA 310 PAM 190 Link to the PLC Verbindung zur SPS 4 5 Connection examples In PIN 2 In PIN 4 SPS PLC 0 10 V 4 20 mA input In PIN 2 In PIN 4 GND PIN 3 AIN W 2000 1600 2000 C for 0 100 AIN W 1000 1000 0 V for 0 100 GND ...

Page 14: ...0 240 0 055 PWM output Max output current Frequency A Hz Wire break and short circuit monitored 2 5 60 2941 selectable in defined steps System cycle times Solenoid current control Signal processing µs ms 167 1 Serial interface Transmission rate kBaud LIN bus 19 2 Housing DIN EN Hirschmann GDME 175 301 803 A Weight kg 0 110 Protection class Temperature range Storage temperature C C IP65 with gasket...

Page 15: ...gue input Range monitoring LIM 0 0 01 Signal monitoring function e g joystick error Ramp function R UP R DOWN 100 100 ms ms Command signal ramp times Output signal adaptation MIN 0 0 01 Deadband compensation MAX 10000 0 01 Output scaling TRIGGER 200 0 01 Deadband compensation trigger point POL Output polarity Powerstage parameters CURRENT 0 Current output range DFREQ 120 Hz Dither frequency DAMPL ...

Page 16: ...nging the language settings the parameter list has to be updated by pressing the identification button ID 5 2 2 MODE Parameter view Command Parameters Unit Group MODE x x STD EXP STD This command changes the operating mode Various commands defined via STD EXP are blanked out in Standard Mode The commands in Expert Mode have a more significant influence on system behavior and should accordingly be ...

Page 17: ...nput signal Usable are 0 20mA means A has the value 20 Really used are 4 20mA means B has a value of 16 20 4 Not used are 0 4mA In a range of 20mA this is an offset of 20 means a value of 2000 for C Last but not least X has to be set to C choosing current signal In this case AIN command would look like this AIN I 20 16 2000 C or AIN I 1250 1000 2000 C see below Typical settings Command Input Descr...

Page 18: ...d the dependent parameters cannot be calculated correctly Example LIM 500 5 lower upper limitation If the input signal gets higher than 95 or lower than 5 it leaves the permitted range and the output will switch off 5 3 3 R Command signal ramp time Command Parameter Unit Group R I X i UP DOWN x 50 10000 ms STD Two quadrant ramp function The ramp time is separately set for UP and DOWN ramps t Ausga...

Page 19: ...e MIN value the overlap dead band of the valve will be compensated Via the TRIGGER the activation point of the MIN function is set and so a non sensitive range around the zero point2 can be specified CAUTION If the MIN value is set too high it influences the minimal pressure which cannot be ad justed any longer In extreme case this causes to an oscillating at small input values 2 This dead band is...

Page 20: ...X DAMPL X x 60 400 x 0 3000 Hz 0 01 EXP The dither3 can be defined freely with this command Different amplitudes or frequencies may be required de pending on the respective valve The dither amplitude is defined in of the nominal current see CURRENT command CAUTION The PPWM and IPWM parameters influence the effect of the dither setting These param eters should not be changed again after the dither ...

Page 21: ...n of the current loop 5 5 6 IPWM I gain of the current loop Command Parameters Unit Group PPWM X IPWM X x 0 30 x 1 100 EXP The PI current controller for the solenoids is parameterized with these commands CAUTION These parameters should not be changed without adequate measurement facilities and experience If the PWM frequency is 250 Hz the dynamic of the current controller has to be decreased Typic...

Page 22: ...e after input scaling Comman value after ramp function Control signal Solenoid current5 mA The process data are the variables which can be observed continuously on the monitor or on the oscilloscope 5 The display of the solenoid current in WPC 300 program is damped in order to be able to bring out a stable signal ...

Page 23: ...ntrol parameterization has been set with the assistance of the valve data sheets The RC in monitor mode can be used to analyze faults CAUTION All safety aspects must be thoroughly checked when working with the RC Remote Control mode In this mode the module is controlled directly and the machine control cannot influence the module FAULT CAUSE SOLUTION READY LED is off Presumably no power supply is ...

Page 24: ...Page 24 of 24 PAM 190 P A I 05 06 2020 7 Notes ...

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