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                JKD7208S Stepper Motor Driver
                  • JKD7208S Stepper Motor Driver
                  • JKD7208S Stepper Motor Driver
                  • JKD7208S Stepper Motor Driver
                  • JKD7208S Stepper Motor Driver
                  • JKD7208S Stepper Motor Driver
                  • JKD7208S Stepper Motor Driver
                  • JKD7208S Stepper Motor Driver
                Product Details

                JKD5056S Nema 34 2-phase Stepper Motor Driver

                Product Description:

                Main features:

                Product Type: Nema 34 Stepper Motor Driver

                Feature summaryHigh start speed; High hording torque under high speed; High performance, low price

                Place of Originchina

                Minimum order quantity10pcs

                Support Motor: Nema 34 Stepper Motor

                PackingThe sample is packed in carton,the batch with plastic pallet

                Delivery timeStandard product: 7-10days

                Customized product: 25-30days

                Transaction modeEXW, FOB, FCA, CIF, FAS, CFR, CPT, CIP, DAF, DEQ, DDU, DDP...




                Product Overview:

                JKD7208S is a new digital stepper motor driver by JKONGMOTOR. It adopts the latest 32-bit DSP digital processing technology. The drive control algorithm adopts advanced variable current technology and advanced frequency conversion technology. The driver has small heating, small motor vibration and stable operation. Users can set any subdivision within 200 ~ 51200 and any current value in the rated current to meet the application needs in most occasions. Thanks to the built-in micro-subdivision technology, the subdivision effect can be achieved even under the condition of low subdivision. The operation is smooth and the noise is ultra-small under low, medium and high speed. The driver integrates the parameter auto-adjust function, which can automatically generate optimal operating parameters for different motors to maximize the performance of the motor.



                Features:

                New 32-bit DSP technology

                Ultra-low vibration noise

                Built-in high subdivision

                Automatic parameter adjustment function when power on

                Variable current control reduces the heating of the motor

                The current automatically halve at rest

                Can drive two phase stepping motors of 4, 6, 8 lines

                Optical isolation differential signal input

                The pulse response frequency can reach to 500KHzFactory default 200KHz

                The current setting is convenient and can choose between 0.1 to 7.2A

                Subdivision setting range is between 200 to 51200

                Has the protection function of overpressure, underpressure and overcurrent







                Application:

                Suitable for all kinds of small and medium sized automation equipment and instruments, such as: engraving machine, marking machine, cutting machine, laser lighting, plotter, cnc machine, automatic assembly equipment, etc. It use very well in the equipment that user expects small noise, and high peed.




                Electrical indicators:

                Instruction

                JKD7208S

                Minimum

                Typical

                Maximum

                Unit

                The output current

                0.1

                -

                7.2

                A

                Input voltage

                24

                48

                75

                VDC

                Control signal input current

                6

                10

                16

                mA

                Control signal interface level

                4.5

                5

                28

                Vdc

                Input signal minimum pulse width

                1.5

                -

                -

                us

                Stepper pulse frequency

                0

                -

                200

                KHz

                Insulation resistance

                100



                M




                Using environment and parameters:

                Cooling method

                Natural cooling or forced air cooling

                Using environment

                occasion

                Can not be placed next to other heating equipment, should avoid dust, oil mist, corrosive gas, too big humidity and strong vibration place, prohibit to have combustible gas and conductive dust

                temperature

                -5  +50

                humidity

                40  90%RH

                vibration

                5.9m/s2MAX

                Storage temperature

                -2080

                Using altitude

                Below 1000 metres

                Weight

                About  280 g



                Enhanced heat dissipation:

                1Drivers reliable working temperature control in 66 , the motors working temperature control in  85

                2We suggest automatic half stream mode,when the motor is stopped and the current is reduced by half to reduce the heating of the motor and actuator

                3When installing the driver, use vertical side installation to make the cooling tooth form a stronger air convection. The fan shall be installed near the actuator in the time necessary to heat the heat and ensure that the driver works in the range of reliable working temperature.




                Control signal interface circuit:

                Name

                Function

                PUL+

                Pulse signal: pulse rising edge is effective; In PUL high level,voltage is 4.5 ~ 28Vdc, and the low level, voltage is 0 ~ 0.5v. In order to reliably respond to the pulse signal, the pulse width should be greater than 1.5s 

                PUL-

                DIR+

                Direction signal: high/low level signal, to ensure reliable commutation of motor, directional signal should be established before the pulse signal at least 2s. The initial direction of the motor is connect to motor wiring, change winding (e.g., A +, A - exchange) can change the direction of the motor running, In DIR high level,the voltage is 4.5 ~ 28 VDC,in low level,voltage is 0 ~ 0.5 V.  

                DIR-

                ENA+

                Enable signal: this input signal is used to enable or prohibit. ENA+ connect 4.5 ~ 28Vdc, ENA- connect low level (or internal optical coupling), the actuator will cut off the electrical current to keep the motor in a free state and the stepper pulse is not responsive. When this function is not required, the enable signal can be suspended.

                ENA-



                High voltage interface:

                Name

                Function

                GND

                DC power grounding

                +Vdc

                DC power positive, dc 24~75 VDC, recommended for 48Vdc.

                A+A-

                Motor A phase coil interface

                B+B-

                Motor B phase coil interface



                232 Communication interface:

                It is possible to connect a PC or STU debugger with a dedicated serial cable, and forbid charged plug. Through STU or the PC software ProTuner, the subdivision and current value, effective edge and single double pulse all can be set, and can also be used for the elimination and adjustment of the resonance point.

                Terminals No.

                Signal

                Name

                Instruction

                1

                         NC



                2

                +5V

                5V positive of power supply

                Only by external STU

                3

                TxD

                RS232 sender


                4

                GND

                5V power grounding

                0V

                5

                RxD

                RS232 receiver


                6

                NC



                Note: JKD7208S and PC, text display or STU servo debugger connection cable must be special cable,please confirmwith us before use.




                Current setting:

                1Working (dynamic) current setting

                Output peak current  

                Output average current  

                SW1

                SW2

                SW3

                Current self-setting

                Default[2.0A]

                on

                on

                on

                When SW1, SW2, SW3 are set to off off off, the required current can be set by PC software,max 7.2 A, resolution 0.1 A. Default current is 2 A without setting

                3.08A

                2.57A

                off

                on

                on

                3.77A

                3.14A

                on

                off

                on

                4.45A

                3.71A

                off

                off

                on

                5.14A

                4.28A

                on

                on

                off

                5.83A

                4.86A

                off

                on

                off

                6.52A

                5.43A

                on

                off

                off

                7.20A

                6.00A

                off

                off

                off



                2 Static current setting

                Static current can set by SW4 DIP switch settings, off means the static current is set to half of dynamic current, on means static current and dynamic current is the same. SW4 should be set to off for general use, can reduce the heating of the motor and the driver. About 400ms after the pulse train stopped it will automatically reduced to half current (60% of the actual value), the heat will reduced to 30% theoretically .




                Subdivision setting:

                Step/Rev.

                SW5

                SW6

                SW7

                SW8

                Subdivide description

                400

                on

                on

                on

                on

                Subdivision Description: The driver subdivision adopts the internal default subdivision. Users set the subdivision number through the PC software ProTuner or STU debugger, the minimum value is 1, the resolution Is 1, the maximum is 51200.

                800

                off

                on

                on

                on

                1600

                on

                off

                on

                on

                3200

                off

                off

                on

                on

                6400

                on

                on

                off

                on

                12800

                off

                on

                off

                on

                25600

                on

                off

                off

                on

                51200

                off

                off

                off

                on

                1000

                on

                on

                on

                off

                2000

                off

                on

                on

                off

                4000

                on

                off

                on

                off

                5000

                off

                off

                on

                off

                8000

                on

                on

                off

                off

                10000

                off

                on

                off

                off

                20000

                on

                off

                off

                off

                40000

                off

                off

                off

                off



                Parameter self-tuning function:

                 If switch the SW4 back and forth within 1 second, the driver can auto-complete the motor parameters and internal parameters adjustment; when the conditions like motor, supply voltage changes, please conduct a self-tuning, otherwise, the motor may not run normal. Note that the pulse can not be input at this time and the direction signal should not change.

                Method 1:SW4 from on to off, and then off back to on in 1 second;

                Method 2: SW4 from off to on, and then by the dial back to off within 1 second.

                Note: This model has power-on auto tuning function.



                Power supply options:

                   JKD7208S can working normally in the specified range of voltage, and use non-regulated DC power supply is best, also can use transformer reduction + bridge rectifier + capacitor filter. However,should notice that voltage ripple peak value after rectifier should not exceed its maximum specified voltage. It is recommended that users use DC voltage lower than the maximum voltage to supply power and avoid the fluctuation of power grid beyond the working range of driver voltage.

                   If using a regulated switching power supply, be aware that the output current range of the switching power supply needs to be maximized.

                Please note:

                1) When wiring, pay attention to the positive and negative poles of the power supply.

                2) Best use non-regulated power supply;

                3) When using non-regulated power supply, the power supply current output capacity should be greater than 60% of the driver set current;

                4) When use regulated switching power supply, the output current of the power supply should be greater than or equal to the working current of the driver;

                5) To reduce costs, two or three drives can share a power supply, but should ensure that the power supply is large enough.



                Motor matching:

                JKD7208S can be used to drive 4,6,8-wire two-phase, four-phase hybrid stepper motor, step angle of 1.8 degrees and 0.9 degrees are both applicable. When selecting a motor, it is mainly determined by the torque of the motor and the rated current. The size of the torque is mainly determined by the motor size. The motor torque is large for large size; and the current is mainly related to the inductance, small inductance motor has high speed performance, but the is current larger.



                Common problems:

                Phenomenon

                Possible problems

                Solutions

                Motor not running

                Power light is off

                Check the power supply circuit, normal power supply

                Motor shaft has torque

                The pulse signal is weak and increase the current to 7-16mA

                Too small subdivision

                Choose right subdivision

                If  the current setting too small

                Choose right current

                Driver is protected

                Re-power

                The enable signal is low

                This signal is pulled high or not connect

                No responsive to control signal

                No powered

                Motor direction error

                Wrong wiring of  motor

                 Exchange any two lines of the same phase of the motor (eg A +, A-exchange connection positions)

                Motor circut is open

                Check and connection right

                Alarm indicator light

                Wrong wiring of  motor

                Check the wiring

                Voltage is too high or too low

                Check the power supply

                Motor or driverdamaged

                Change the motor or driver

                Wrong position

                The signal is disturbed

                Eliminate interference

                No connect grounding

                Grounding right

                Motor circut is open

                Check and connection right

                Wrong subdivision

                Set right subdivision

                Small current

                Increase the current

                The motor cant run when acceleration

                Acceleration time is too short

                Acceleration more time

                Too samll motor torque

                Select a large torque motor

                Low voltage or current is too small

                          Increase the voltage or current




                Product Dimensions:

                nema 34 stepper motor driver




                Customized Design:

                If this product do not match with your request. Please feel free to contact with us,We can make customized shaft / winding / mounting flange / cable / connector / Encoder / Brake / Gearbox and others. We will works side-by-side with you and your team to design a motor that will fit the precise needs of your application. All Engineering and Support is done in-house.



                Related Stepper motor:

                Nema 34 Stepper Motor.




                FAQS

                1. How can get it started as soon as possible when you first use the drive?

                After you correctly connect the power cord, the motor line, the Hall line, the external potentiometer slowly accelerates. After the motor is turned correctly, you can test the enable, direction and other functions. If you are unfamiliar with the product, the initial use should be done after the test. And then it can be installed to the actual use.

                 

                2. What will come about if power supply is reverse?

                It will immediately burn the drive.

                 

                3. What is the maximum of the upper control signal voltage ?

                The maximum voltage of the speed regulation signal is 5V. Exceeding this voltage will cause the drive to burn.

                 

                4. After the driver has been working for a long time, the shell is hot. Is it normal?

                Yes, it is. At room temperature, after long working hours, it is up to 90 degrees. And it will not affect the performance.

                 

                5. The power indicator is light, but the motor does not turn and shift, what is the reason?

                There may be a mistake in the phase line and the Hall line. Please re-energize the wiring according to the motor manual.

                 

                6. Can my motor speed transferred to 6000 with this drive?

                The maximum speed of the brushless motor is determined by the parameters of the motor itself. The drive can control the motor speed from 0 to the highest speed.

                 

                7. I already have a motor and how to install this drive after wiring?

                You must first determine the motor phase and the definition of the Hall line, and then you can connect it with wires. If you are not sure, you need to ask the motor manufacturers. Incorrect wiring can cause damage to the drive.

                 

                8. Can I add some features on this drive or do new product development?

                Yes, please contact us.



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