User Manual - ElectroCraft
Contents
1. 4 3 Block c 6 LER UU e 8 5 Explanation of Terminals Dip Switches amp Potentiometers 18 6 GIlOS Sal t M 21 7 Description of Inputs and 5 2725722 26 8 Basic 25 31 9 Accessories amp Options KAKA KAKA 32 10 Warranties amp Disclaimers eene 33 11 34 12 Mounting Din rail adapter eene 34 ElectroCraf E Mail info electrocraft com www electrocraft com December 2008 2 User Manual EA2708 EA2716 EA2724 ElectroCraft powering innovation 1 Safety amp Installation PB gt gt The EA2708 EA2716 EA2724 requires installation by qualified personal whom must pay attention to safety and other regulatory standards They should be thoroughly familiar with the entire system before beginning installation Before final operation of machine be sure to test hookup with motor disconnected from the load Improper wiring could cause a motor run away condition and cause severe injury or damage to the machine Before starting installation of the EA2708 EA2716 EA2724 be sure that main power is disconnected After powering the2. x o r 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 L 3 Note In case of using the switches Fwd Rev or Brake refer chapter 7 1 ElectroCraft E Mail info electrocraft com www electrocraft com December 2008 17 ElectroCraft powering innovation User Manual EA2708 EA2716 EA2724 5 Explanation of Terminals Dip Switches amp Potentiometers 5 1 Terminals Terminal Label Description S1 1 select max extern or intern S1 2 change the Still level S1 S1 3 select the Ramp off or on S1 4 select the time of the Ramp Pin 1 amp 2 connect to power supply Pin 3 amp 4 amp 5 connect to motor Pin 1 input Enable Pin 2 input direction Fwd Rev Enable Pon y aha B oo Pin 3 input Brake Brake Pot Pin 4 input max extern ma IB cv wt Pin 5 input external max pot Pin 8 GND Pin 1 amp 2 amp 3 input for hall signals Pin 4 output signal Still out A E m Pin 5 voltage input for Still out Sensor C Speed Pin 6 voltage output 6 VDC still out ev Pin 7 input Speed extern Pin 8 GND ElectroCraft E Mail info electrocraft com www electrocraft com December 2008 18 ElectroCraft powering innovation User Manual EA2708 EA2716 EA2724 5 2 Potentiometers O N e or o 9 lt lt lt lt e N N N Potentiometer Function Turning to the Left Turning to the ccw Right cw S
3. ElectroCraft powering innovation User Manual EA2708 EA2716 EA2724 Cogging A term used to describe non uniform angular velocity Cogging appears as a jerkiness especially at low speeds Continuous rated current The maximum allowable continuous current a motor can handle without exceeding the motor temperature limits Continuous stall torque The amount of torque at zero speed which a motor can continuously deliver without exceeding its thermal rating Determined by applying DC current through two windings with rotor locked while monitoring temperature Specified with motor windings at maximum rated temperature with motor in 25 C ambient mounted to a heat sink Refer to individual specs for heat sink size Controller A term describing a functional block containing an amplifier power supplies and possibly position control electronics for operating a servomotor or step motor Demag current The current level at which the motor magnets will start to be demagnetized This is an irreversible effect which will alter the motor characteristics and degrade performance Drive An electronic device that controls torque speed and or position of an AC or brushless motor Typically a feedback device is mounted on the motor for closed loop control of current velocity and position Driver Electronics which convert step and direction inputs to high power currents and voltages to drive a step motor The step motor dr
4. 2 2 1 Specifications Electrical Data Power Supply Voltage Auxiliary Voltage Input Nominal Current Maximum Power only achievable with additional heatsink amp proper mounting see accessories Switching Frequency Efficiency Induction Specification amp caution for low inductance motors Power connector Signals ElectroCraft 4 ElectroCraft powering innovation 11 to 70 VDC Residual ripple lt 5 The lower limit is monitored by integrated undervoltage trip WARNING Do not exceed 70V Overvoltage will damage the drive 5 to 30 VDC Supply voltage for the Stil out output Refer chapter 7 2 08 16 24 A model dependent 560 1120 1680 W 20 kHz 95 Optional choke modules are often an economical solution for low inductance or other motors if an overheating situation occurs in regular intervals Contact factory service for details The diameter must be suited for the connecting wires of the current load The recommendation is 1 5 mm AWG16 the minimum is 0 13 mm AWG28 Maximum wire diameter with respect to the plug contact is 2 5 mm Strip the wire insulation of the cables on a length of 10mm For stranded wire use end sleeves with the corresponding length Wire ends have to be inserted into the contact until they reach the stop For the cabling of the RJ45 plugs we recommended shielded CAT5 cables The cables are available in different colours a
5. N t LLI T N N t LLI co N N lt f LLI 5 c o Block Diagram 3 1115 M ll 4 IH Xew xew xew dul xeuu IIIIS Jepooep p ds 4oloul Jeyiduue 10419 E APP eBeis nd no 2160 8 wmd E Mail info electrocraft com www electrocraft com December 2008 ElectroCraft User Manual EA2708 EA2716 EA2724 ElectroCraft powering innovation 3 1 Control Elements ElectroCraft E Mail info electrocraft com www electrocraft com December 2008 7 ElectroCraft powering innovation User Manual EA2708 EA2716 EA2724 4 Wiring According to the safety directives a correct cable selection is mandatory Regular inspection is advisable Damaged burned or kinked items have immediately to be exchanged Power Power Power GND e Normally no shielding required e When connecting several amplifiers to the same supply pack use star point wiring Motor Wiring gt 30 cm e Only shielded cables are recommended e Connect the shield to the ground lug of the servo amplifier e A separate cable has to be used e Choke modules are useful to reduce PWM pulses Connection to hall and encoder gt 30 cm e Only shielded cables are recommended e Connect the shield to the controller e A separate cable has to be used Analog Signals max Speed I Pot HI I Pot LO I Pot e n mo
6. green OK Enable ElectroCraft Off On Fud Rev yellow STILL www electrocraft corn EA2708 B Mid E2716 J Imax tO EA2724 Bil I max 2 Q Servo Amplifier Brushless DC Motors PWM Technology max HI 2 Power Supply Voltage 11 70V GND max 08 16 24A d MB CE Manufactured under Sensor A a i DIN ISO EN 9001 2000 2 3 Sensor B amp Design Made Still out Sensorc E Patent in EU K n iios B IPC A610 class 2 Enable jj I Pot HI Fwd Rev o Brake J Pot Imax a evo x N Brake Speed QO NI GI BLOWIN FE 5 24U T1 Motor B Power Motor Power supply 11 70 UDC Sd r 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 i 1 1 1 1 1 L 3 ElectroCraf E Mail info electrocraft com www electrocraft com December 2008 13 ElectroCraft powering innovation User Manual EA2708 EA2716 EA2724 4 3 1 Adjustment procedure for Wiring Example lll 1 Set the internal Speed potentiometer to right maximum speed 2 Turn the potentiometer n max until the desired maximum speed is reached 3 If the current limiters max LO and max HI are not used set max LO to left and max HI to right refer chapter 5 2 4 Adjust with an external voltage to the max input the maximum motor current to a value requested by you I
7. IV B w N Set the internal Speed potentiometer to left minimum Chose the maximum speed to the Speed input with the external potentiometer Turn the potentiometer n max until the desired maximum speed is reached If the current limiters max LO and max HI are not used set max LO to left and max HI to right refer chapter 5 2 Adjust with the external max potentiometer the maximum motor current to a value requested by you It is of major importance that this value is lower than the maximum admissible constant current see motor data sheet To measure the motor current use a current probe in one of the motor cables with a oscilloscope or a multimeter ElectroCraft E Mail info electrocraft com www electrocraft com December 2008 16 ElectroCraft powering innovation User Manual EA2708 EA2716 EA2724 4 5 Wiring Example V green OK Enable ElectroCraft Fud Rev yellow STILL www electrocraft com EA2708 J 27057 EA2716 jj max lO EA2724 2 Q Servo Amplifier Brushless DC Motors PWM Technology Supply Voltage 11 70V max 08 16 24A A d BONS Manufactured under DIN ISO EN 9001 2000 Speed Sensor 8 Design Made Still out Sensor C Ej Patent in EU Uin Stil out IPC A 610 class 2 n Enable j Pot HI marv E O Poo Brake J l Pot Imax oO Power _GND Motor B Power supply 11 70 UDC
8. Rev level Enable auf HI motor is working in the other direction Sensor A B C Hall Feedback of the Motor The Sensor input X3 1 X3 2 and X3 3 are connected to the hall signal of the motor The supply voltage is given by the Uh output at X3 6 to GND The drive needs the signals to do the commutation and control the speed Range of Input Voltage 0 to 6 VDC Input Impedance 22 kOhm to Uh Permanent Input Protection 0 6 to 24 VDC High level gt 2 4 VDC Low level lt 1 VDC ElectroCraft E Mail info electrocraft com www electrocraft com December 2008 27 User Manual EA2708 EA2716 EA2724 Brake Braking the Motor ElectroCraft powering innovation If the Brake input X2 3 is at GND potential or not wired at all the function is not activated At HI the motor is breaking suddenly by shorting the motor windings to GND even if the Enable input is switched off Range of Input Voltage 0 to 24 VDC Input Impedance 4 7 kOhm to GND Permanent Input Protection 0 6 to 50 VDC Brake activated Brake disabled Note gt 3 5 VDC lt 0 6 V open or connected to GND Don t exceed the maximum breaking speed otherwise the output stage could destroyed The maximum allowed breaking speed is limited by the maximum permitted short circuit current and the maximum allowed kinetic energy e lt 30 A W lt 20 Ws max allowed braking speed limited by current I 30 A max allowed braking spee
9. drive it should not be touched by hand or risk shock Be care that in case of regeneration or in brake operation the energy recovery must be buffered by the power supply and or a braking module Ensure with electronically stabilized power supplies that protection circuit isn t react Don t switch off the power supply while the motor is turning in this case the drive could be destroyed by regeneration We recommended connecting a capacitor in parallel close to power input with 1000HF per each ampere output current Do not repair or open drives enclosure Result would result in personal injury and would void all warranties The EA2708 EA2716 EA2724 comply with the European directive EN 61800 3 1996 The followings points must followed Ametal mounting plate with correct grounding is mandatory e For installation purposes tooth lock washers have to be used e For most wiring schemes only shielded cables are admissible to suppress interference with other devices Damaged items have to be replaced e Provide for a large contact area between shields and mounting plate e The motor has to be grounded in the prescribed manner e The drive is an Electrostatic Sensitive Device ESD Electrostatic discharge needs to be avoided NOTE Certain applications may involve special requirements Consult Factory ElectroCraft E Mail info electrocraft com www electrocraft com December 2008 3 User Manual EA2708 EA2716 EA2724
10. Enable a d Fwd Rev a D Brake Imax oO Motor B Power supply 11 70 VDC Doct ita SAR ak S 3 14 E Mail info electrocraft com www electrocraft com December 2008 9 ElectroCraft powering innovation User Manual EA2708 EA2716 EA2724 4 1 1 Adjustment procedure for Wiring Example I 1 Set the internal Speed potentiometer to right maximum speed 2 Turn the potentiometer n max until the desired maximum speed is reached 3 If the current limiters max LO and 1 max HI are not used set max LO to left and max HI to right refer chapter 5 2 4 Adjust with the max potentiometer the maximum motor current to a value requested by you It is of major importance that this value is lower than the maximum admissible constant current see motor data sheet To measure the motor current use a current probe in one of the motor cables with a oscilloscope or a multimeter ElectroCraft E Mail info electrocraft com www electrocraft com December 2008 10 ElectroCraft powering innovation User Manual EA2708 EA2716 EA2724 4 2 Wiring Example Il green OK Enable ElectroCraft yellow STILL H Off On Fud Rev x N www electrocraft com EA2708 J EA2716 J Imax LO EA2724 a max 2 Q Servo Amplifier Brushless DC Motors PWM Technology Supply Voltage 11 70V max 08 16 24A d MB CE Manufactured under DIN ISO EN 9001 2000
11. Imax intern Still Still 2 Still 1 Ramp Ramp Off Ramp On Time Time slow Time fast ElectroCraft powering innovation S 2 CS KE On Off 213 Methods of entering the set value for the current reduction External selection using a voltage betvveen X2 4 and X2 8 or a external potentiometer at X2 5 X2 6 X2 7 The internal max potentiometer is used Selecting the speed for the Still function A speed lower than 1000 rpm will activate the output A speed lower than 100 rpm will activate the output Ramp function The feature is disabled The output signal is increasing in that time which is defined by the Time switch Setting the Ramp time The time of the ramp is set approximately to 4 sec The time of the ramp is set approximately to 1 sec ElectroCraft E Mail info electrocraft com www electrocraft com December 2008 20 ElectroCraft powering innovation User Manual EA2708 EA2716 EA2724 6 Glossary Speed The function for the Speed potentiometer is to adjust the motor speed If the speed is set by the input X3 7 set the potentiometer to the left stop n max Use this potentiometer to adapt the desired maximum speed to the amplitude of the present set value For Example if maximum of 5V is to be used for maximum Speed then send 5V and adjust that maximum with the n max potentiometer Take care not to exceed meaningful limits An exaggerated value may entail pr
12. Ohm Permanent Output Current 100 mA max source and sink Note The logical state of this output is clearly visible by the yellow Stil LED on the front panel ElectroCraft E Mail info electrocraft com www electrocraft com December 2008 29 ElectroCraft powering innovation User Manual EA2708 EA2716 EA2724 7 3 Analog Inputs Speed Set Value Input for Speed An external analog signal for speed entered using Speed input If the voltage is OV the motor stops If the voltage is positive 0 6 V to 4 5 V the drive is working in the regulation area Over 4 5 V the motor is unregulated with a limited maximum speed through the n max potentiometer Range of Input Voltage 0 V to 5 V Input Impedance 100 kOhm Permanent Input Protection 0 6 V to 30 V Remark To use the external Speed input set the internal Speed potentiometer to left stop I Pot I Pot LO I Pot HI Set Value Input for Current Limiting An external analog signal for the current limiting entered using Pot input At 0 V input voltage the current is set to circa 1096 of the defined driver current With 10 V the driver will deliver the maximum current To use this input set S1 1 to Off The internal max potentiometer are deactivated Range of Input Voltage 0 V to 10 V Input Impedance 100 kOhm Permanent Input Protection 30 V to 30 V Enable B Poni Fwd Rev Pot to Brake 4 Q0 kOhm Imax GND Alternative it is pos
13. Speed n max 5 24U Power GND QO NI O K amp QO N gt max HI x 69 Design Made Sensor C Patent in EU Still out B 610 class 2 Fuvd Rev j Brake Imax oO QO N O GI S gt QO NB Power Motor B Motor Power supply 11 70 UDC 3 ElectroCraft E Mail info electrocraft com www electrocraft com December 2008 11 User Manual EA2708 EA2716 EA2724 ElectroCraft powering innovation 4 2 1 Adjustment procedure for Wiring Example ll B w N Set the internal Speed potentiometer to left minimum Chose the maximum speed e g 5V to the Speed input Turn the potentiometer n max until the desired maximum speed is reached If the current limiters max LO and max HI are not used set max LO to left and max HI to right refer chapter 5 2 Adjust with the max potentiometer the maximum motor current to a value requested by you It is of major importance that this value is lower than the maximum admissible constant current see motor data sheet To measure the motor current use a current probe in one of the motor cables with a oscilloscope or a multimeter ElectroCraft E Mail info electrocraft com www electrocraft com December 2008 12 ElectroCraft powering innovation User Manual EA2708 EA2716 EA2724 4 3 Wiring Example Ill
14. User Manual EA2708 EA2716 EA2724 ElectroCraft powering innovation 216 1212 WE For Brushless Commutated DC Motors up to 1680 W EA2708 EA2716 EA2724 Servo amplifier in a small size rugged aluminium housing in bookshelf form Different methods of mounting for fast installation Tool free connections for power terminations Inputs and outputs via RJ45 CAT5 plug Operation mode with simple DIP switch setting User adjustable current limit and ramp function Wide range supply voltage between 11 and 70 VDC for different kinds of power supplies Protected against overtemperature and over current MOSFet technology efficiency 95 Continuous current up to 09 16 24 A model dependent Basic drive description The EA2708 EA2716 EA2724 servo amplifiers are designed to drive DC brushless type motors They require a single DC power supply for operation The drives are to be used with a single motor They have the functionality to operate as an independent speed control The drives are protected against short circuits under voltage over temperature and over current It has multiple possibilities of operation and serves as a reliable choice for your motion control needs ElectroCraf E Mail info electrocraft com www electrocraft com December 2008 1 User Manual EA2708 EA2716 EA2724 ElectroCraft powering innovation Table of Contents 1 Safety 5 Installation 3 PAR pecie
15. ate Watt One horsepower equals 746 watts 7 Description of Inputs and Outputs 7 1 Digital Inputs Enable Activating or Disabling the Output Stage If the Enable input X2 1 is at GND potential or not wired at all the output stage remains in the locked state The motor stands still or slow down without brake To reactivate the output stage a voltage signal gt 3 5V to the Enable input is necessary If the ramp function is applied as well it will immediately be carried out after the activation of the connector Range of Input Voltage 0 to 24 VDC Input Impedance 4 7 kOhm to GND Permanent Input Protection 0 6 to 50 VDC Enable activated gt 3 5 VDC Enable disabled lt 0 6 V open or connected to GND ElectroCraft E Mail info electrocraft com www electrocraft com December 2008 26 ElectroCraft powering innovation User Manual EA2708 EA2716 EA2724 Fwd Rev Changing the Direction of the Rotation If the Fwd Rev input X2 2 is at LO the motor turns in counter clockwise at HI he works in clockwise rotation Range of Input Voltage 0 to 24 VDC Input Impedance 4 7 kOhm to GND Permanent Input Protection 0 6 to 50 VDC Fwd Rev CW rotation 23 5 VDC Fwd Hev CCW rotation 0 6 V open or connected to GND Note It is to avoid changing the direction on fly otherwise the motor also the drive can be damaged For changing the direction please follow this way e Enable auf LO till motor has stopped e Change the Fwd
16. d limited by kinetic energy W 20 Ws By the motor data s it is possible to calculate the maximum breaking speed na 30A k Rp 5 0 05Q min 4 4 kir Speed Constant min V Rone Terminal Resistance Phase Phase 0 At a given moment of inertia the maximum breaking speed is calculated as follow 365 Ee 10000 min 1 da F 2 Rotor Inertia gcm 1 J Load Inertia gem ElectroCraft E Mail info electrocraft com www electrocraft com December 2008 28 ElectroCraft powering innovation User Manual EA2708 EA2716 EA2724 7 2 Digital Outputs Still out Low Speed Monitor Whenever the motor is drop under a defined level the Still out output responds LO position The level is given by switch S1 2 and the adjusting of the potentiometer n max Level 1 circa 100 rpm e Level 2 circa 1000 rpm The output is applicable in three different modes A As Open Collector LO active TTL compatible or up to 30 V industrial logic B As Push Pull output with an output impedance 50 Ohm when connecting the upper voltage signal to input Uin With Uin 24 V an SPS with photocoupler inputs can directly be controlled C Together with a bridge between the 5V output and Verror input applicable as Push Pull output for a connection to TTL or CMOS Logics without external upper voltage signal Range of Output Voltage 0 6 V Uin 0 6 V with Uin 5 V to 30 V Output Impedance 50
17. iver is analogous to the servomotor amplifier s logic Efficiency The ratio of power output to power input ElectroCraft E Mail info electrocraft com www electrocraft com December 2008 23 ElectroCraft powering innovation User Manual EA2708 EA2716 EA2724 Encoder A feedback device which converts mechanical motion into electronic signals The most commonly used rotary encoders output digital pulses corresponding to incremental angular motion For example a 1000 line encoder produces 1000 pulses every mechanical revolution The encoder consists of a glass or metal wheel with alternating transparent and opaque stripes detected by optical sensors to produce the digital outputs Feedback A signal which is transferred from the output back to the input for use in a closed loop system Four quadrant Refers to a motion system which can operate in all four quadrants i e velocity in either direction and torque in either direction This means that the motor can accelerate run and decelerate in either direction Gain The dynamical behaviour of the servo amplifier must be compatible to the particular connected motor The adjusting procedure is performed using the Gain potentiometer A bad adaptation i e if the Gain value has been selected too high can be easily recognized by excessive motor vibration or noise Consequential mechanical damages cannot be excluded furthermore an overtemperature situation may arise d
18. nd lengths in the system accessories E Mail info electrocraft com www electrocraft com December 2008 User Manual EA2708 EA2716 EA2724 2 2 Mechanical Data Mechanical Dimensions L x W x H Weight Mounting 2 3 Ambient Conditions Operation Temperature Storage Temperature Humidity Non Condensing Overtemperature Protection 2 4 Digital and Analog Inputs Enable Fwd Rev Brake Hall A B C Speed Imax I Pot HI I Pot Pot LO 2 5 Outputs Auxiliary Voltage Outputs Uh Still out 2 6 Control LEDs OK Still ElectroCraft powering innovation 120 x 85 x 27 5 mm 220g M3 screws or Din Rail Mounting 10 to 45 C 40 to 85 C 20 to 80 RH 80 C TTL 24 VDC Resistance 4 7 kOhm TTL 24 VDC Resistance 4 7 kOhm TTL 24 VDC Resistance 4 7 kOhm TTL 6 VDC Resistance 22 kOhm Analog 0 5 VDC Resistance 100 kOhm Analog 0 10 VDC Resistance 100 kOhm 100 kOhm potentiometer 6 V 20 mA Open Collector Push Pull TTL 24 VDC Resistance 50 Ohm LED green Note The LED is lit when the operating voltage is present overtemperature and the undervoltage protection circuit has not been initiated LED yellow The lamp is lit at low speed The value of the speed is defined by setting of switch S1 4 ElectroCraft E Mail info electrocraft com www electrocraft com December 2008 5 ElectroCraft powering innovation lt j CN N
19. o their machinery and indemnifies Electrocraft against all damages e Any reproduction of this product and document is strictly prohibited Limited Warranty Electrocraft products unless otherwise stated in specifications are warranted for a period of 18 months from date of shipment to be free from defects in materials workmanship and to conform to the specifications Liability under this warranty shall be limited to the repair or replacement but not to the installation of any defective product at Seller s option Products will be repaired or replaced at the Seller s option Under no circumstance shall the user repair or modify the product Failure to adhere to this will void all warranty For Warranty Repair or Technical Assistance contact Customer Support North America USA amp Canada Motion Control Technologies 800 697 6715 Email info electrocraft com Customer Support Europe except Germany Middle East Africa Australia Central amp South America Customer service at 44 0 127 050 8800 Email EMEAsales electrocraft com Customer Support Germany Customer service at 49 0 711 727205 0 Email info electrocraft de ElectroCraf E Mail info electrocraft com www electrocraft com December 2008 33 User Manual EA2708 EA2716 EA2724 ElectroCraft powering innovation 11 Dimensions 119 0 112 0 All dimensions in mm 12 Mounting Din rail adapter WM DIN7982 3 5x9 5 QUE EA27x
20. oad converts it to electrical energy and returns it to the amplifier Resonance Oscillatory behavior caused by mechanical limitations Ringing Oscillation of a system following a sudden change in state Speed Describes the linear or rotational velocity of a motor or other object in motion Tachometer A small generator normally used as a rotational speed sensing device The tachometer feeds its signal to a control which adjusts its output to the motor accordingly called closed loop feedback control Thermal protection A thermal sensing device mounted to the motor to protect it from overheating This is accomplished by disconnecting the motor phases from the drive in an over temperature condition ElectroCraft E Mail info electrocraft com www electrocraft com December 2008 25 ElectroCraft powering innovation User Manual EA2708 EA2716 EA2724 Torque A measure of angular force which produces rotational motion This force is defined by a linear force multiplied by a radius e g Ib in Torque is an important parameter of any motion control system Torque mode In this mode the driver controls only the current into the motor The speed of the motor depends on the load because only the output force of the motor is regulated Two Quadrants Refers to a motion system which can operate in two quadrants by changing the direction of the motor speed ore in one quadrant with active accelerate and deceler
21. oblems for the control of the servo amplifier making it impossible e g to line up the system in speed control operation under load max The following action requires the motor to be operated with maximum load The motor current may be measured e g using current probe with effective value display or by means of an ammeter located in the motor line max decide on the maximum possible motor current The following limits have to be observed Left stop 10 of rated current of 08A 16 A 24 A model dependent Right stop 100 of rated current 0 20 96 With the pots max LO and max Hl is it possible to adjust the upper and the lower limits refer chapter 5 2 Note Do not overheat the motor For this reason the max limit should always be selected lower than the maximum admissible constant current Ramp The ramp function is activated if the switch S1 3 is set to On The ramp time defines the increasing time to reach the scheduled value defined by n max The ramp is active after the drive is enabled also after changing the Speed ElectroCraf E Mail info electrocraft com www electrocraft com December 2008 21 ElectroCraft powering innovation User Manual EA2708 EA2716 EA2724 Still This is function that shows a low speed operation of the motor Hall mode This is a closed loop speed mode which is using the hall signals as a feedback input for the speed Brushless motor Class
22. of motors that operate using electronic commutation of phase currents rather than electromechanical brush type commutation Brushless motors typically have a permanent magnet rotor and a wound stator Commutation A term which refers to the action of steering currents or voltages to the proper motor phases so as to produce optimum motor torque In brush type motors commutation is done electromechanically via the brushes and commutator In brushless motors commutation is done by the switching electronics using rotor position information obtained by Hall sensors Hall sensor A feedback device which is used in a brushless servo system to provide information for the amplifier to electronically commutate the motor The device uses a magnetized wheel and hall effect sensors to generate the commutation signals Back EMF The voltage generated when a permanent magnet motor is rotated This voltage is proportional to motor speed and is present regardless of whether the motor winding s are energized or de energized Closed loop A broadly applied term relating to any system in which the output is measured and compared to the input The output is then adjusted to reach the desired condition In motion control the term typically describes a system utilizing a velocity and or position transducer to generate correction signals in relation to desired parameters ElectroCraft E Mail info electrocraft com www electrocraft com December 2008 22
23. peed Set the motor speed Decrease motor Increase motor speed speed n max Definition of max number Value is decreased Value is increased of revolutions I max LO Adjust lower max level Decline the lower limit Raise the lower limit max Set value for max current Reduce the current Increase the current I max HI Adjust upper max level Upper limit is lowered Upper limit is raised I max max LO 1 max HI The max potentiometer is normally set to the maximum possible motor current With the potentiometers max LO and max HI it is possible to shift the adjustment range of the max potentiometer The tuning area of max LO is from 10 to 90 and of max HI from 10 to 100 of the maximum continuous current of the drive If now needed that the range of the max potentiometer is limited 8 A drive version e g from 4 A to 8 A set max LO about to the centre ca 4 A and max HI to the right stop ca 8 A The range of the max potentiometer is now reduced to wanted area This is possible with the internal also with the external max potentiometer Remark Do not adjust the potentiometer max LO higher than max HI and max HI lower than max LO max can t be set if the there is a overlapping of these areas ElectroCraft E Mail info electrocraft com www electrocraft com December 2008 19 User Manual EA2708 EA2716 EA2724 5 3 Dip switches S1 1 Off 1 2 Off S1 4 Off Imax Imax extern
24. sible to use external potentiometer with a value of 100 kOhm instead the internal max potentiometer Connect the tap to Pot the left stop to Pot LO and the right stop to Pot HI In this case the internal max LO and max HI potentiometer are working like description in chapter 5 2 ElectroCraf E Mail info electrocraft com www electrocraft com December 2008 30 ElectroCraft powering innovation User Manual EA2708 EA2716 EA2724 8 Basic Troubleshooting Motor runaway e The logic of the hall connection is permuted e Reduce the maximal speed with pot n max e Input frequency of feedback has been exceeded Motor noise e Use additional choke in the motor Motor has no torque e Increase the admissible current with max pot Motor drifts at standstill e The input value for the set value isn t stable Motor is going hot at standstill e Use an additional choke in series with the motor See accessories Motor speed too low e Increase the range with pot n max e Increase the admissible current with max pot e Supply voltage too low No motion even though enable is on e Check power supply and the wiring e Overheating protection is active e Check the polarity of the motor windings and hall signals e ls the phasing 120 or 60 of the hall correct e The polarity of the motor windings or hall signals is permuted e The feedback loop is open Check wiring Over temperature e Use an additional heatsink see acce
25. ssories e Reset the amplifier Note Beware that the maximal working temperature of 80 C in the driver is not reached otherwise the drive will be switched off ElectroCraft E Mail info electrocraft com www electrocraft com December 2008 31 ElectroCraft powering innovation User Manual EA2708 EA2716 EA2724 9 Accessories amp Options e Mounting adaptor for Din rail MA0025 e Connecting module WA2509 e Choke modules 1A3100 with 3 x 50 uH and 1A3101 with 3 x 100 uH e Heatsink No Fan HA3008 e Heatsink 1 Fan HA3018 e Heatsink 2 Fans HA3028 e Shielded CATS Cables CA2005 Red 5 CA2010 Red 10 CA2020 Red 20 CA2030 Red 30 CA8005 Yellow 5 CA8010 Yellow 10 CA8020 Yellow 20 CA8030 Yellow 30 CA4005 Grey 5 CA4010 Grey 10 CA4020 Grey 20 CA4030 Grey 30 CA6005 Blue 5 CA6010 Blue 10 CA6020 Blue 20 CA6030 Blue 30 e Braking module ASO BM 70 30 ElectroCraft E Mail info electrocraft com www electrocraft com December 2008 32 ElectroCraft powering innovation User Manual EA2708 EA2716 EA2724 10 Warranties amp Disclaimers e Contents are subject to change without notice Electrocraft will not be liable in any way for direct indirect incidental or consequential damages caused by the use of this product or document Per Electrocrafts Terms amp Conditions the user of Electrocrafts accepts all responsibility and risks involved with applying this product int
26. st cases no shielding required This may be different for low level signals or in an environment with strong magnetic interference e Connect the shield on either end of the cable For 50 60 Hz interference remove the shield on one side Digital Signals Enable Fwd Rev Brake Still out e No shielding required To verify a trouble free operation and the conformity to CE regulation it makes only sense to test the system as a whole with all components installed motor amplifier supply pack EMC filters cables etc Note To improve the resistance to the noise immunity always connect unused logical inputs to a fix potential GND or 5V Do not connect the CAT5 connectors to any network ElectroCraft E Mail info electrocraft com www electrocraft com December 2008 8 User Manual EA2708 EA2716 EA2724 4 1 Wiring Example r 1 1 1 1 1 1 1 1 1 i 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 L ElectroCraft ElectroCraft powering innovation green OK ElectroCraft Fud Rev yellow STILL www electrocraft com EA2708 J EA2716 a max lo EA2724 J 2 Q Servo Amplifier Brushless DC Motors PWM Technology Supply Voltage 11 70V max 08 16 24A A d nu Manufactured under Sensor A a i DIN ISO EN 9001 2000 Speed n max Sensor B Design Made Still out Sensorc Ej Patent in EU Ui out g IPC A 610 class 2 n h
27. t is of major importance that this value is lower than the maximum admissible constant current see motor data sheet To measure the motor current use a current probe in one of the motor cables with a oscilloscope or a multimeter 5 To check the LED at the Still out output reduce the motor speed with the Speed pot till the LED is lit at the same time the internal yellow LED Still is activated ElectroCraf E Mail info electrocraft com www electrocraft com December 2008 14 ElectroCraft powering innovation User Manual EA2708 EA2716 EA2724 4 4 Wiring Example IV green OK Enable ElectroCraft Off On Fud Rev yellow STILL www electrocraft com EA2708 B TT ot Lo EA2716 B tee To d A2724 j 2 Q Servo Amplifier Brushless DC Motors PWM Technology Supply Voltage 11 70V max 08 16 24A d MB CE Manufactured under DIN ISO EN 9001 2000 Speed N max Sensor Ej Design Made Still out Sensor C Patent in EU still out y IPC A 610 class 2 Enable I Pot HI Fwd Rev o Brake B Pot imax ev Power Motor B Motor Power supply 11 70 UDC adinan am sal 3 ElectroCraft E Mail info electrocraft com www electrocraft com December 2008 15 User Manual EA2708 EA2716 EA2724 ElectroCraft powering innovation 4 4 1 Adjustment procedure for Wiring Example
28. ue to high currents inside the motor Inductance The electrical equivalent to mechanical inertia that is the property of a circuit which has a tendency to resist current flow when no current is flowing and when current is flowing has a tendency to maintain that current flow NTC Negative Temperature Coefficient A negative temperature coefficient thermistor is used to detect and protect a motor winding from exceeding its maximum temperature rating it is also used in a servo amplifier Resistance of the device decreases with an increase in temperature ElectroCraft E Mail info electrocraft com www electrocraft com December 2008 24 ElectroCraft powering innovation User Manual EA2708 EA2716 EA2724 Open loop A system in which there is no feedback Motor motion is expected to faithfully follow the input command Stepping motor systems are an example of open loop control Pulse Width Modulation PWM 1 A PWM controller amplifier switches DC supply voltage on and off at fixed frequencies The length of the on off interval or voltage waveform is variable 2 Pulse width modulation PWM describes a switch mode as opposed to linear control technique used in amplifiers and drivers to control motor voltage and current PWM offers greatly improved efficiency compared to linear techniques Regeneration The action during motor braking in which the motor acts as a generator and takes kinetic energy from the l
29. x_L08 Subject to change without prior notice ElectroCraft E Mail info electrocraft com www electrocraft com December 2008 34
Download Pdf Manuals
Related Search