Closed-loop Stepping Driver

Product Category

Closed Loop Stepping Driver 2LS556A -42

Closed Loop Stepping Driver 2LS556A -42

Based on the platform of 32-bit ARM processing chip, the magnetic field orientation and high-speed flux-weakening algorithm in the servo driver are designed to achieve excellent performance.

The built-in vector control design and servo demodulation function of the driver, combined with the feed back of the closed-loop motor encoder, make the stepping servo system have the features of low noise, low heating.no lost steps and higher application speed, and can improve the intelligent equipment system performance in all directions.

♦ Pulse mode: single pulse/ CW/CCW pulse

♦ Signal level: 5V/24V separate wiring, simple and practical, strong anti-interference ability.device where the user desires high rotation speed and high torque.

♦ Typical applications lock screw machine, servo dispensing machine, stripping machine, labeling machine,medical detector, electronic assembly equipment etc. The application effect is particularly good in a device where the user desires high rotation speed and high torque.


Drive Function Description

Drive functionOperating Instructions
Microstep subdivision settingSW1-SW4 four dial codes are used to select a total of 16 files of microsteps. When the user sets the subdivision, electric motion should be stopped first. For detailed microstep subdivision settings, please see the drive panel description.
Running direction settingSW5 is used to select the initial direction of rotation of the motor. It is necessary to power off and restart the drive to make effect.
Pulse smoothing selectionSw6 is used to select whether to enable the internal S-type command smoothing function. Turn on this function when ON to make the driver input pulse signal smoother. It is necessary to power off and restarts the drive to make effect.
Pulse mode selectionSw7 is used to select the input pulse mode, off is the pulse & direction, and on is CW/CCW pulse. It is necessary to power off and restart the drive to make effect.
Open/closed loop selectionSw8 is used to select the control mode, off is the closed loop mode, and on is the open loop mode.
Pulse control / automatic operation selectionSw9 pulse control / automatic operation select off: Receive external pulse control, on drive automatically with 20RPM automatic forward and reverse, can be used to test the motor and drive
Signal interfacePUL+ and PUL- are the positive and negative ends of the control pulse signal; DIR+ and DIR- are the positive and negative ends of the direction signal; ENA+ and ENA- are the positive and negative ends of the enable signal; ALM+ and ALM- are the Positive and negative ends of alarm output signals. The ALM port can also be configured for brake output or positioning completion.
Encoder interfaceEB+ and EB- are encoder B direction signals; EA+ and EA- are encoder A direction signals; VCC and GND are encoder power interfaces.'
Motor interfaceA+, A-, B+, B- are the stepping servo motor winding interfaces, which must be linked with the motor identification color and cannot be exchanged.If the phase sequence of the encoder and motor power line is reversed, you can change the parameter resolution.
Power interfaceV+, V- are the positive and negative terminals of the input DC power supply, 2LS556A operating voltage range 24-50 VDC, voltage power greater than 150W.
LEDThe driver has two indicators, red and green. The green light is the power indicator. The green light flashes after the driver is powered on. The red light is the fault indicator. The red light flickers when there is a fault in the gear and the encoder is misaligned. After the fault is cleared, the red light goes out. When an alarm occurs on the drive, it must be powered on again to clear the fault.
Installation NotesDimensions: 118 * 75.5 * 33 mm, mounting hole spacing 112. Can be horizontal or vertical installation, but it should be close to the metal cabinet for better cooling


Driver Operating Status LED Indication

LED statusDrive status
Green lightDrive is not enabled
Green flashingThe driver is working properly(Pulse flashing faster)
1green、1redDrive overcurrent
1 green、2 redEncoder counter or no encoder
1 green、3 redLocation out of tolerance
1 green、5 redADC hardware error


Driver Cable Diagram


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Microstep Subdivision Setting

Steps / TurnSW1SW2SW3SW4
3600onononon
800offononon
1600onoffonon
3200offoffonon
6400ononoffon
12800offonoffon
25600onoffoffon
7200offoffoffon
1000onononoff
2000offononoff
4000onoffonoff
5000offoffonoff
8000ononoffoff
10000offonoffoff
20000onoffoffoff
40000offoffoffoff