Model Code Definition

DKC = Indramat ECODRIVE full digital servo drive family code

11.3 = 11th generation mainboard, Revision 3 hardware with expandable option card slot for fieldbus daughterboards

200 = Continuous rated output current: 200Arms

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

FW = General-purpose standard factory firmware, basic three-loop control, no built-in electronic cam & electronic gearing algorithm (contrast to FM firmware)

Technical Specifications

Main Power Input: Three-phase AC380~480V ±10%, 50/60Hz; independent external DC24V control power supply

DC Bus Parameter: Nominal 700VDC, built-in high-power pre-charge soft-start circuit, integrated internal dynamic brake bleeder, continuous bleeder power 1.2kW

Output Performance: 200A continuous rating, 250% overload sustain for 300ms, optional 4kHz/8kHz PWM carrier frequency, max output frequency 800Hz

Dimension & Weight: W260mm × H420mm × D230mm, net weight approx 19.5kg, built-in dual high-power axial cooling fan, IP20 vertical cabinet installation

Ambient Rating: Full-load operating temperature 0~45℃; storage -20℃~+80℃; rated installation altitude ≤1000m; relative humidity＜95% non-condensing, pollution degree 2

Interface & Communication Configuration

Power Terminals: L1/L2/L3 three-phase mains input, U/V/W high-current motor output terminals, dedicated terminal block for external high-power braking resistor

Encoder Interface: Dual independent feedback channels, compatible TTL incremental ABZ encoder + resolver, isolated 5V onboard encoder power supply

Digital I/O Terminal: Standard onboard 8DI+8DO fixed terminals for drive enable, travel limit, homing signal and motor brake sequential control

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

Debug & Fieldbus: Front panel RS232 serial port for DriveTop parameter commissioning; expandable SERCOS/Profibus-DP/CANopen via optional plug-in daughter card

Core Functions

Standard FW firmware realizes full closed-loop position/speed/torque triple regulation; supports analog speed regulation, pulse positioning control, I/O triggered multi-step fixed-position running. Equipped with STO safe torque off function and full-range fault protection including overcurrent, DC bus over/undervoltage, IGBT overtemperature, encoder wire break, front LED digital fault code display; lacks native electronic cam and multi-axis electronic synchronization compared with FM dedicated firmware variant.

Application Fields

Heavy-duty CNC machine main spindle drive, metallurgical thick plate slitting line, rubber & plastic large extruder equipment, heavy-duty papermaking winding machine, automotive large stamping automation lines, oversized rotary printing machinery.

Operation & Maintenance Instructions

Type-7 high voltage specification only matches AC380~480V three-phase power; 220V input causes persistent DC bus undervoltage alarm and severe torque deficiency.

Replacement must adopt identical FW firmware version; parameter files cannot be directly copied from FM firmware drives.

Frequent forward-reverse cyclic working condition must equip external high-power braking resistor to avoid internal bleeder overheating burnout.

Parameter download and on-site debugging need matched DriveTop software edition corresponding to factory FW firmware version.