Product Short Description
Product Brief Introduction
SLVD2NDR is miniature low-power digital servo drive from Parker SLVD-N series, integrated built-in motion profile generator, supporting multiple standard command signals and STO safe torque off safety function. Ultra-compact DIN rail design for small automated equipment, low-power brushless servo motor precision position/velocity/torque control.
Description
Core Technical Specifications
- Input Power Supply: Single-phase / 3-phase 230VAC mains input
- Continuous Output Current: 2.5A RMS per phase
- Total Power Rating: 1.6kVA nominal power capacity
- Servo Control Update Cycle: 62.5μs ultra-fast closed-loop refresh rate
- Command Input Modes: ±10V analog command, step/direction pulse (max 800kHz pulse frequency)
- Feedback Compatibility: TTL incremental encoder, EnDat absolute encoder, Resolver
- Communication Protocols: RS232/RS485, CANopen DS402, optional EtherCAT expansion card
- Digital I/O: 8×24VDC sinking digital inputs, 6×24VDC PNP digital outputs (100mA max per output)
- Safety Function: STO Safe Torque Off PLd SIL2 certified
- Protection Class: IP20 cabinet installation only
- Operating Temperature: 0°C ~ +45°C full rated load; derate above 45°C
- Dimension: 110mm (H) × 50mm (W) × 135mm (D) ultra-narrow compact width
Function Features
- Stand-alone motion profile generator without upper PLC control: electronic cam, electronic gearing, multi-segment position motion
- Integrated internal 60W dynamic braking resistor for small inertia load deceleration
- Support IEC 61131 programmable motion logic for custom machine automation sequences
- Built-in auto motor identification and one-click servo loop gain auto-tune function
- Multi-layer hardware protection: overvoltage, undervoltage, overcurrent, over-temperature, encoder loss, motor short circuit
- Daisy-chain communication wiring support, up to 32 SLVD2NDR drives connected on single CANopen bus
- Optional DB9 keypad expansion module for on-site parameter setting without PC software
Working Principle
Single/three-phase 230VAC mains power rectified to DC bus voltage inside drive. On-board 32-bit DSP motion controller receives position/velocity command via analog voltage or step pulse input, executes vector control algorithm to drive three-phase brushless servo motor. Encoder feedback signal continuously feeds rotor position back to DSP for closed-loop position correction. STO safety circuit directly cuts off IGBT gate drive signals independent of main control chip to eliminate motor torque output during emergency stop. Regenerative energy generated during deceleration consumed by internal braking resistor; high-inertia load supports external braking resistor expansion interface.
Material Composition
- Enclosure: Black cold rolled steel thin sheet compact housing with matte anti-corrosion coating
- Main Power PCB: Medium-current copper-clad circuit board with reinforced insulation
- Power Devices: Small packaging IGBT power modules, low-loss rectifier diodes
- Control Board: Miniature multi-layer digital PCB with surface-mount communication chips
- Heat Dissipation: Integrated small aluminum extrusion heat sink bonded to power IGBT components
- Terminal Blocks: Spring-clamp plastic terminal blocks for power and signal wiring
Structural Characteristics
- Ultra-narrow width DIN rail vertical mounting design, high density multi-axis cabinet layout
- Front panel split wiring zones: upper signal I/O terminals, lower motor/mains power terminals
- Front panel LED indicators: power, running, fault, STO safety status, bus communication
- Side expansion slot for optional EtherCAT communication daughter card
- Integrated ventilation grille for passive convection cooling without built-in fan
Installation Requirements
- Mount vertically on standard 35mm DIN rail inside sealed control cabinet
- Maintain ≥80mm vertical clearance above and below drive for air circulation
- Motor and mains power cables adopt shielded cable, shield single-point grounded at drive cabinet ground bar
- Separate signal wiring and power wiring trunking with minimum 8cm spacing to avoid interference
- Cabinet ambient temperature limited to maximum 45°C for continuous full-load operation
Application Scenarios
- Small automated desktop assembly equipment: Electronic component pick-and-place machines
- Precision packaging small machines: Labeling heads, small conveyor positioning axes
- Laboratory test automation equipment: Precision linear motion test stages
- Textile small processing machinery: Embroidery machine single-axis servo control
- Medical automation equipment: Surgical instrument positioning actuators
Operation Precautions
- Do not operate drive without encoder feedback connected, risk of uncontrolled motor runaway
- DC bus residual voltage exists 5 minutes after power cut; wait full discharge before wiring maintenance
- Do not install in cabinet with high humidity or conductive dust accumulation
- Internal braking resistor will reach high temperature during frequent rapid deceleration; maintain ventilation clearance
- Do not daisy-chain more than 32 drives on single CANopen bus to avoid communication delay error
- If STO safety fault alarm persists, inspect safety interlock wiring continuity and emergency stop contact integrity
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