Description

SL28110A-E Closed Loop Stepper Driver is a next-generation motion control solution designed to deliver the precision of a stepper system with the reliability and feedback capabilities of servo technology. By integrating advanced closed-loop control algorithms with real-time encoder feedback, the SL28110A-E Closed Loop Stepper Driver effectively eliminates step loss, improves positioning accuracy, and significantly enhances the overall performance of automated machinery operating under dynamic load conditions.

Engineered for demanding industrial applications, the SL28110A-E Closed Loop Stepper Driver is widely used in CNC machinery, semiconductor manufacturing equipment, laser cutting systems, automated assembly lines, packaging machines, textile equipment, inspection systems, and precision positioning platforms. Unlike traditional open-loop drivers, this advanced Closed Loop Stepper Driver continuously monitors motor position and automatically compensates for load variations, ensuring accurate and reliable motion even during rapid acceleration and deceleration.

SL28110A-E Closed Loop Stepper Driver – Technical Specifications

General Information

Product Model: SL28110A-E Closed Loop Stepper Driver
Driver Technology: DSP-Based Digital Closed-Loop Control
Motor Compatibility: 2-Phase Closed-Loop Hybrid Stepper Motors
Feedback Device Support: Incremental Encoder Feedback
Control Architecture: Position Closed-Loop with Real-Time Error Compensation

Electrical Specifications

Input Voltage Range: AC 60V – 110V or DC 80V – 160V
Recommended Operating Voltage: AC 80V – 100V
Output Current Range: 2.8A – 11.0A Peak Adjustable
Current Adjustment: Software and DIP-Switch Selectable
Logic Signal Voltage: 5V / 12V / 24V Compatible
Pulse Input Frequency: Up to 500 kHz

Motion Control Features

Command Modes: Pulse & Direction (PUL/DIR), CW/CCW
Position Correction: Automatic Following Error Compensation
Step-Loss Detection: Integrated Closed-Loop Monitoring
Auto-Tuning Function: Intelligent Parameter Optimization
Microstep Resolutions: Programmable Electronic Subdivision
Speed Regulation: Dynamic Torque Adjustment Throughout the Speed Range
Acceleration Capability: Optimized for High-Speed Start/Stop Applications

Protection Functions

Mechanical & Installation Data

Cooling Method: Forced-Air Assisted Aluminum Heat Sink Design
Mounting Configuration: Standard Industrial Panel Mount
Housing Material: Industrial-Grade Metal Enclosure
Status Indicators: Power, Alarm, Pulse, Direction, Encoder Feedback LEDs

Environmental Specifications

Operating Temperature: 0°C to +50°C
Storage Temperature: -20°C to +80°C
Humidity: <90% RH, Non-Condensing
Protection Class: IP20
EMC Performance: Industrial Anti-Interference Design

Reliability Characteristics

Control Response Time: <1 ms
Continuous Duty Operation: Suitable for 24/7 Industrial Applications
Expected Service Life: ≥50,000 Hours
Noise Reduction Technology: Advanced Resonance Suppression Algorithm
Positioning Accuracy Improvement: Up to 100% Step-Loss Elimination Compared with Open-Loop Systems

Typical Applications

Performance indicators

1.Electrical indicators
Cooling way		Natural cooling or forced air cooling
Using teenvironment	occasion	Can not be placed next to other heating equipment, to avoid dust, oil, corrosive gas, humidity is too high and strong vibration place, no combustible gas and conductive dust;
	Temperature	0——+50℃
	humidity	40—90%RH
	vibration	10~55Hz/0.15mm
Keep temperature		-20℃～65℃
Weight		0.2KG
2. Environmental indicators
instructions	SL28110A-E
instructions	Mini value	Typical values	Max. Value	Unit
Output current(peak)	2	–	6	A
Voltage DC（AC）	18	70	110	V
Control signal current	6	10	16	mA
Step pulse frequency	0	–	400	KHz
Step pulse width	2	–	–	us
Directional signal width	100	–	–	us
Under-voltage protection point	–	22	–	VDC
Overvoltage protection point	–	120	–	VDC
Drive initialization time	2	–	–	s
Insulation resistance	500			MΩ

Ports and wiring
1. Port description
1) Control signal interface
Name	Function
PUL+	Pulse input signal：Pulse effective edge adjustable, the default pulse rising edge effective; The pulse width should be greater than 1.2μs in order to reliably respond to the pulse signal. Input voltage range: 5~24V.In dual-pulse mode: CW
PUL-
DIR+	Directional input signal:High/low level signal, in order to ensure reliable commutation of the motor, the direction signal should be established at least 5μs before the pulse signal. The initial running direction of the motor is related to the wiring of the motor windings, and the initial running direction of the motor can be changed by exchanging any of the windings (such as A+, A- exchange). Input voltage range: 5~24V .In dual-pulse mode: CCW
DIR-
EN+	Enable control signal. This input signal is used to enable or disable drive output. When ENA is connected to low level (or the internal optocoupler is on), the driver will cut off the current of each phase of the motor and the motor is in a free state and does not respond to the stepping pulse.When this function is not needed, enable the signal terminal to hang. Input voltage range: 5~24V
EN-
ALM+	Alarm error output, OC open emitter output, output maximum current 50mA, maximum withstand pull-up voltage 24V
ALM-
EX+	In place output,
EX+	In place output,

2)Power interface
Power supply and motor power interface
Interface name	Features
AC+	Dc AC common source, power supply voltage range: DC 18-110VDC/, AC 18-80VAC
AC-	Dc AC common source, power supply voltage range: DC 18-110VDC/, AC 18-80VAC
A+	Stepping motor A + phase winding interface
A-	Stepping motor A-phase winding interface
B+	Stepping motor B + phase winding interface
B-	Stepping motor B-phase winding interface

High Voltage SL28110A Closed Loop Stepper Driver for CNC Machine

Description