Technical & Performance Specifications

• Mains Input Power: Single Phase 120/240 VAC (±10%), 50/60Hz
• Continuous Per-Phase Output Current: 2.5 Arms RMS
• Peak Per-Phase Overload Current: 3.5 Arms RMS
• Maximum Microstep Resolution: 25,600 steps per full motor revolution
• Command Input Signal Standard: Step/Direction pulse differential line driver signal (SD suffix function)
• Onboard Communication Interface: RS485 Modbus RTU industrial serial bus (DN suffix function)
• Digital I/O Terminals: 4x 5–24VDC programmable sinking/sourcing input channels, 3x 24VDC programmable output channels
• Proprietary Control Algorithms: Dynamic Smoothing™ low-vibration current modulation, Multi-Stepping™ variable resolution switching, Encoderless Stall Detection™ real-time load stall monitoring
• Integrated Protection Functions: Phase overcurrent, mains overvoltage/undervoltage lockout, drive heatsink overtemperature, motor winding short circuit, stall fault lockout
• Cooling Method: Passive aluminum heat sink natural convection cooling
• Protection Class: IP20 cabinet internal installation only
• Net Unit Weight: 1.2 kg

Material Composition

1. Chassis Housing: Thin-wall extruded aluminum alloy black anodized anti-static frame
2. Heat Dissipation Radiator: Integrated extrusion aluminum fin structure unified with chassis frame
3. Main Control PCB: Miniaturized high-density FR4 flame retardant circuit board
4. Power Switching Components: Dual H-bridge MOSFET power array thermally bonded to chassis radiator
5. Signal Terminal Blocks: PA66 flame retardant insulated copper spring-clamp quick-disconnect terminals

Structural Features

• Ultra-compact slim vertical form factor optimized for dense multi-axis stepper control cabinet layouts
• Front panel segmented terminal layout separating mains power, motor phase power, Step/Direction command signal and RS485 communication zones with internal metal EMI shielding
• Unified chassis-heat sink extrusion eliminating separate radiator assembly components
• No internal cooling fan unit; all power switching heat dissipated directly through external chassis fin array
• Onboard non-volatile flash memory stores custom motion indexing profiles and motor current configuration parameters

Working Principle

Function Features

1. 25,600 microstep maximum resolution for ultra-fine low-speed positioning precision
2. Dynamic Smoothing™ patent technology eliminates stepper motor resonance and audible operating noise
3. Encoderless Stall Detection™ function removes requirement for external position feedback encoder hardware
4. SDN suffix integrated Step/Direction pulse command interface compatible with all standard motion controller pulse output signals
5. RS485 Modbus RTU communication supports multi-drive networked synchronized indexing motion profiles
6. 4x programmable digital input and 3x digital output channels for limit switch, home sensor and fault interlock integration
7. Adjustable idle current reduction logic to minimize motor winding heating during static hold conditions

Advantage Highlights

1. Fanless passive cooling design eliminates mechanical fan maintenance and failure risk points
2. Ultra-high 25,600 microstep resolution delivers servo-equivalent smooth low-speed motion without closed-loop encoder hardware
3. Encoderless stall detection function reduces total system component count and wiring complexity
4. Compact slim chassis minimizes cabinet space occupation for multi-axis stepper automation layouts
5. CE, RoHS, REACH global compliance certification for OEM industrial equipment mass deployment

Applicable Industries

Installation Requirements

1. Vertical cabinet mounting orientation mandatory; horizontal installation reduces heat dissipation efficiency by 35%
2. Minimum unobstructed airflow clearance: 60mm vertical space above drive top edge, 40mm lateral side clearance
3. Mounting metal plate connected to facility star earth grid via ≥4mm² copper protective earth conductor
4. Stepper motor phase cable specification: ≤15m length use 1.5mm² four-core shielded copper cable
5. Step/Direction command signal cable: Twisted-pair double-shielded 0.25mm² cable maximum transmission distance 50m
6. RS485 Modbus communication wiring: Twisted-pair shielded bus cable with 120Ω terminating resistor installed at network bus endpoints

Operation & Maintenance Precautions

1. Cabinet ambient operating temperature range strictly limited to 0°C ~ +40°C; temperature above 40°C apply linear 15% phase current derate per 10°C temperature rise
2. Bi-monthly compressed dry air cleaning of chassis aluminum extrusion fins to remove accumulated dust blocking heat dissipation airflow
3. Disconnect single-phase mains supply and wait minimum 5 minutes for DC bus capacitor full discharge before disassembling terminal wiring
4. Exclusively pair drive unit with Kollmorgen T2x/N3x/K3x series hybrid stepper motors; third-party stepper motors prohibited to avoid stall detection function failure
5. All signal wiring connectors must maintain complete double-end shield grounding to eliminate command pulse noise distortion
6. Idle current reduction parameter must be configured per motor datasheet specification to prevent excessive static winding heating