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BY12512d_e.doc / Mai-08

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Description

Offset Total

Not used. Set to 00 at any time.

Gain Total

Digital setting of multiplication of analogue voltage signal.
Range 0 - 99999.

With analogue feed forward, the output voltage is

With digital feed forward, the output voltage is approximately

where

f

maste

r is the frequency of the master encoder in kHz. Please note the

output voltage swing is limited to +/-10 Volts max.

9.

The Front LED

The LED on the BY125 front side indicates the operating condition of the unit. When all
operation is o.k. the LED is flashing slowly. With any other kind of LED state, the unit indicates
hardware or software fault.

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Содержание BY 125

Страница 1: ...S shape profile TTL encoder inputs A A B B Z Z Easy PC setting via serial link data loading on the fly Simple to mount rack or DIN rail Standard version suitable for all 4 quadrant type drives with 10...

Страница 2: ...where failure or maloperation could cause damage to a machine or hazard to the operating staff it is indispensable to meet effective precautions in order to avoid such consequences Regarding installat...

Страница 3: ...ut and Output 19 7 4 The Serial Ports 19 7 5 Control Inputs and Outputs 21 8 Register List and Clarification 24 8 1 General Parameters 25 8 2 Setup Registers 29 9 The Front LED 33 10 Remarks about Dri...

Страница 4: ...lect inputs please see Option UP125 and observe the special hints given in section 18 of this manual As a matter of course full ratio control and other functions like index pulse tracking print mark r...

Страница 5: ...485 Possibilities for remote control of a BY125 synchronizer When on the slave site you intend to use a 1 quadrant type drive speed reference always with positive polarity 0 10 volts and digital forw...

Страница 6: ...can match the two speeds within an error range of approx 1 Ratio Adjust Master Drive Speed Reference Slave Drive P1 P2 Fig 1 The digital synchronization now has to compensate for the analogue speed e...

Страница 7: ...l to the master speed There are three ways to generate Vin a Use of the master speed reference voltage like shown in Fig 2 This presumes the master drive does not use any remarkable internal ramps bec...

Страница 8: ...igital feed forward like shown here requires encoder frequencies of at least 1 kHz at maximum speed of the master drive Where we cannot reach this frequency at maximum speed slight instability of the...

Страница 9: ...Factor 2 Master Proportional operation Slave 1 Factor 2 Master 1 Factor 2 Reciprocal operation Proportional or reciprocal operation can be selected by the parameter LV Calc Remarks to previous formula...

Страница 10: ...ubsequently have to set up Factor 1 and Factor 2 so that the relation becomes true The simplest way to do this is by setting the factors exactly to the digital value of the impulse numbers from the op...

Страница 11: ...oided by proper factor setting factors can only be set with 4 digits to the right of decimal point If e g a ratio of 16 17 would be required never use the decimal expression of 0 94117647 for Factor 1...

Страница 12: ...n this mode any activation of the Index Master and Index Slave hardware inputs will cause Factor 1 to continuously increment or decrement Upon release of the Trim command the latest scaling factor wil...

Страница 13: ...onsideration of the actual absolute speed This is why the trim function can also be used at standstill to move the slave into a convenient start up position 5 2 Impulse Trimming Modes 5 and 6 The Trim...

Страница 14: ...rs K and N on both encoders The number of slave impulses N must be set to register Impulse Index The formula Fig 6 shows how to calculate Factor 1 The offset needs to be set directly as number of slav...

Страница 15: ...checked with each third slave index Operation mode 8 provides a fully unlocked function of the index inputs and every couple of marker impulses will cause a correction no matter if the master leads t...

Страница 16: ...unit with its minimum peripheral configuration and Fig 10 shows the screw terminal assignment A A B B Z Z 3 2 1 9 6 4 5 GND 10V Master Analogue Master Com Ready 24V out 5V out Opto Alarm Out of sync...

Страница 17: ...of a drive It is essential to connect the channels A A B B at any time The zero input channels Z and Z can be omitted if not needed An auxiliary voltage of 5 5 V max 500 mA totally is available on th...

Страница 18: ...circuit principle Input current 6 mA 33R Fig 12 For screening please refer to section 12 3 The 4 position DIL switch S1 allows the desired encoder voltages to be set Correct switch settings are essen...

Страница 19: ...minal 16 Receives a voltage proportional to the master speed e g master reference voltage or line tacho signal 10 V range when you use analogue feed forward Remains unconnected when you select digital...

Страница 20: ...com standard ISO 1745 which is wide spread in drive industry Before running the BY125 with an RS 485 bus some adjustments are necessary Open the right hand side plate The optional RS 485 interface car...

Страница 21: ...l RS 485 bus supply never an external voltage must be applied to pins 4 and 9 of the connector Delay Times Baud Rate Time in msec 600 32 1200 16 2400 8 4800 4 9600 2 Fig 14 7 5 Control Inputs and Outp...

Страница 22: ...w the use of marker pulses from proximity switches or photocells when the encoder index pulses are not suitable The inputs are edge triggered positive transition and must be enabled by the Index Mode...

Страница 23: ...peration Alarm terminal 22 The alarm output signals that the preset tolerance band has been exceeded in one direction or the other as specified by the parameter Alert Out Sync terminal 23 This output...

Страница 24: ...l access codes All parameters with respect to their numeric values are internally limited to their permitted range Register marked with are only operative when you select one of the index modes Parame...

Страница 25: ...oids positional errors is also to be entered as a number of software cycles Range 000 999 Setting 000 No integration proportional control only Setting 020 Integrator needs 20 cycles 2 ms to compensate...

Страница 26: ...produced when the drive on mechanical grounds dead band or backlash cannot respond In such a case it is not desirable to make corrections immediately The Correction Divider provides a window for the...

Страница 27: ...first in order to avoid confusions with factor calculations Only with this value the setting corresponds to the real operative Factor 1 Once the set up is terminated set F1 Scaling Factor to the nume...

Страница 28: ...requency the subsequent setting can be recommended fmax Sampling Time recommended 1 kHz 100 msec 3 kHz 33 msec 10 kHz 10 msec 30 kHz 3 msec 100 kHz 1 msec Index Mode Selects the source of the index pu...

Страница 29: ...offset offset Fact 1 1 0000 3 Phase trim by internal timer Index Master Forward offset displacement Index Slave Reverse offset displacement Fact 1 Fact 2 4 Phase trim by internal timer additional spee...

Страница 30: ...000 to 2 0000 This setting is suitable for the majority of all synchronizing applications LV Calc 2 or 6 The slave speed is reciprocal to the Factor 1 setting i e halves the motor speed when changing...

Страница 31: ...is set to 1 the output voltage will be equal to the input voltage with Fact 1 1 0000 and Gain Tot 1000 Unit Nr Allows entry of a serial device address between 11 and 99 It is not allowed to use addres...

Страница 32: ...issioning Offset Correction Digital setting of analogue offset on correction signal Setting range 99 Normal setting 0 Remark BY125 uses precision instrumental amplifiers that do not need an offset adj...

Страница 33: ...ltage is With digital feed forward the output voltage is approximately where fmaster is the frequency of the master encoder in kHz Please note the output voltage swing is limited to 10 Volts max 9 The...

Страница 34: ...as small as possible when the synchronizer plays a few encoder increments around the zero error position Normal phase errors are in a range of five encoder increments and the encoder resolution deter...

Страница 35: ...rim etc can be unscreened provided the cable length does not exceed 5 meters Use screened cables for longer length also The following basic screening rules must be observed a With impulse cables encod...

Страница 36: ...an illegal peripheral earth loop would be the result must never Correct screening of encoder cable with intermediate terminals or connectors Connector or terminal 18 10V Screen Correct screen connecte...

Страница 37: ...cuits Take all standard precautions with respect to wiring and environment conditions that are usual for industrial electronic equipment 10 5 Remote Signal Commutation If you need to switch electronic...

Страница 38: ...ual In case of any problems a digital multi meter and an oscilloscope should be available Remove the right hand side plate and adjust carefully DIL switch S1 as shown in section 7 2 If a RS485 interfa...

Страница 39: ...must see the following main screen now Where you find an empty mask with the indication OFFLINE click to the Comms menu and verify the serial settings Ex factory the BY125 is set like shown below and...

Страница 40: ...Maximum 99999 Mode 1 LV Calculation a 1 with analogue feed forward b 5 when you use the internal f V converter digital feed forward Gain Correction 100 Gain Total a 1000 with analogue feed forward b S...

Страница 41: ...ward reverse definition a Where we use analogue feed forward system LV Calculation 1 4 the forward direction for both Master and Slave is the direction which the drives take when positive speed refere...

Страница 42: ...rd If necessary change direction When we count up click to any other box to exit the direction settings This procedure has automatically set our Master and Slave direction bits to either 0 or 1 accord...

Страница 43: ...nown and you can find it out by this test see N K and Factor1 in section 6 which is important for successful index operation When we move slowly enough we can also see the index pulses blinking in one...

Страница 44: ...Correction now The general rule is to increase the setting to values as high as possible but still ensure stable operation Typical settings are between 300 and 2000 Depending on drive inertia and gea...

Страница 45: ...0 40 30 20 10 or even lower The Integrator will move the phase error always into a 6 increments error window and the lower the setting the faster the speed of compensation Too low settings too high in...

Страница 46: ...he oscilloscope function which you can find in the Tools menu You can record all the variables and registers by entering their serial access codes The following supplementary codes are available for r...

Страница 47: ...o activate command Is automatically reset to 0 after execution All commands can be activated either by their specific serial access code or by setting the corresponding bit of the control word Ser Acc...

Страница 48: ...should have penetrated to the EEPROM even the previous steps will not help In this case Switch off the unit Set all control inputs to HIGH at the same time i e connect all terminals from 5 to 10 to 24...

Страница 49: ...iplayer PCBs high speed logic 74 HCT Encoder Inputs Two A A B B Z Z 5 V TTL RS 422 Ri 1 k Other Inputs 6 control lines all PNP with 18 30 V level Ri 15 k Serial link RS 232 with DTR output and optiona...

Страница 50: ...ial features of 1 quadrant inverter drives Where you intend to use such a drive as a Slave please order BY125 with Option UP125 and you will receive the same hardware but with the special firmware no...

Страница 51: ...the Master underswing situation Then the Forward signal will remain on with a small voltage at the analogue output so the Slave can crawl forward into the correct position b The relative position of...

Страница 52: ...makes it move immediately with a small change of the analogue signal To do this you can use register Offset Correction C47 Every increment there corresponds to a voltage of 5 mV Please note you must...

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