Model Code Definition

DKC = ECODRIVE03 full digital servo drive product family identifier

03.3 = Series 03 Revision 3 hardware platform, dedicated expansion slot for optional Profibus-DP fieldbus daughterboard, compact vertical narrow-width cabinet layout with forced air inner cooling structure

040 = Nominal continuous rated output current: 40Arms

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

FW = General-purpose basic three-loop control firmware, without embedded electronic cam and master-slave electronic synchronization functions

Technical Specifications

Main Power Supply: 3-phase AC380~480V ±10%, 50/60Hz; separate isolated DC24V ±10% auxiliary control power supply, control circuit power consumption 21W

DC Bus Parameter: Nominal 700VDC, integrated pre-charge soft-start circuit, internal dynamic brake bleeder with 0.15kW continuous dissipation capacity, max transient energy absorption 5.0kWs

Output Performance: 40Arms continuous rated output, 250% overload sustain for 300ms; optional PWM carrier frequency 4kHz/8kHz/12kHz/16kHz; maximum output frequency up to 1000Hz

Dimension & Weight: W65mm × H360mm × D261mm, net weight approx 5.7kg, IP20 vertical DIN rail cabinet mounting

Ambient Working Condition: Full-load continuous running 0~+45℃, derated operation available up to +55℃; storage temperature -35℃~+85℃; installation altitude ≤1000m; relative humidity ≤95% non-condensing, pollution degree 2 industrial environment

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

Interface & Communication Configuration

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

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

Digital I/O Terminal: Standard onboard DI/DO terminals for drive enable, positive/negative hardware limit, homing trigger and motor holding brake sequential control logic

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

Debug & Fieldbus: Front panel RS232 serial port for DriveTop parameter commissioning; internal dedicated slot for optional Profibus-DP communication daughterboard, expandable with CANopen via alternative option card

Core Functions

FW standard firmware realizes closed-loop position, speed and torque triple regulation. Supports three standard operation modes: analog voltage speed control, pulse-based position control, multi-step fixed positioning triggered by digital input signals. Equipped with STO Safe Torque Off safety function and full protection against overcurrent, DC bus over/undervoltage, power module overheat, encoder cable fault and motor overtemperature, front digital LED fault code display. No native electronic cam and multi-axis master-slave gearing synchronization under FW firmware edition.

Application Fields

Packaging automation lines, textile spinning & winding equipment, medium-format rotary printing machines, small CNC feed axes and automated assembly machinery.

Operation & Maintenance Instructions

Type-7 high voltage variant must connect to three-phase AC380~480V industrial mains; single-phase 220V power supply will trigger persistent DC bus undervoltage fault and insufficient output torque.

Fan-cooled design requires minimum 150mm upper clearance and 80mm bottom clearance inside control cabinet for ventilation, avoid fully enclosed sealed cabinet installation.

Frequently reciprocating forward-reverse cyclic load needs matched external braking resistor to prevent internal bleeder overheating damage.

Parameter backup and download must use matched DriveTop software version; parameter files cannot be directly migrated between FW and FM firmware versions.

Annual regular fan and heatsink dust cleaning is required to avoid heat accumulation leading to drive over-temperature shutdown fault F218.