Model Code Definition

DKC = ECODRIVE03 full digital servo drive family identifier

02.3 = Series 02, Revision 3 hardware, factory pre-reserved slot for SERCOS fiber communication daughterboard, standard compact heat dissipation structure vs DKC21.3 high-power series

040 = Nominal continuous rated output current: 40Arms

7 = High voltage grade, three-phase AC380~480V input, nominal 700VDC DC bus specification

FW = General basic three-loop control firmware, excluding embedded electronic cam and master-slave electronic gearing functions

Technical Specifications

Main Power Input: 3-phase AC380~480V ±10%, 50/60Hz; separate isolated DC24V ±10% auxiliary control power supply

DC Bus Parameter: Nominal 700VDC, integrated pre-charge circuit, internal dynamic bleeder with 0.15kW continuous dissipation, max transient energy absorption 5.0kWs, DC bus capacitance 0.27mF

Output Performance: 40Arms continuous rated output, 250% overload withstand for 300ms, optional PWM carrier 4kHz/8kHz, maximum output frequency up to 1000Hz

Dimension & Weight: W105mm × H360mm × D261mm, net weight approx 5.4kg, IP20 vertical DIN cabinet mounting

Ambient Operation: Full-load continuous operation 0~+45℃, derated running available up to +55℃; storage temperature -35℃~+85℃; installation altitude ≤1000m; relative humidity＜90% non-condensing

Total Power Loss: Rated-load overall power dissipation 180W

Interface & Communication Configuration

Power Terminals: Screw terminal blocks for L1/L2/L3 mains input, U/V/W motor power output, independent terminal for external braking resistor wiring

Encoder Port: Dual 15pin D-SUB feedback ports supporting TTL incremental ABZ encoder and resolver, isolated onboard 5V encoder power supply

Digital I/O: Standard onboard DI/DO terminals for drive enable, hardware limit signal, homing trigger and motor brake sequential control

Command Input: ±10V analog speed/torque reference, pulse+direction position command input

Communication Ports: Front-panel RS232 for DriveTop parameter commissioning; dedicated internal slot for optional SERCOS fiber-optic communication card, expandable with Profibus-DP/CANopen via additional daughterboard

Core Functions

FW standard firmware executes full closed-loop regulation of position, speed and torque. Supports three operation modes: analog voltage speed regulation, pulse positioning, multi-step fixed positioning triggered by digital input. Built-in STO Safe Torque Off safety function together with full protection against overcurrent, DC bus over/undervoltage, power module overtemperature and encoder wire break, front LED numeric fault indication. No native electronic cam and multi-axis synchronous gearing features.

Application Fields

Rotary printing machinery, plastic film slitting & winding lines, medium-load packaging automation, small CNC feed axes and multi-spindle assembly equipment.

Operation & Maintenance Instructions

Type-7 high voltage variant must be powered via three-phase AC380~480V mains; single-phase 220V input causes persistent DC bus undervoltage fault and insufficient output torque.

Natural cooling design requires ≥40mm unobstructed ventilation space at top and bottom of drive unit inside cabinet.

Recurring frequent forward-reverse cyclic working needs matched external braking resistor to avoid internal bleeder overheat damage.

Parameter backup and download must adopt matching DriveTop software edition; parameter files cannot be directly migrated between FW and FM firmware versions.