Model Code Definition

DKC = Digital Compact Servo Drive product family code of Indramat ECODRIVE series

11.3 = 11th generation hardware, Revision 3 upgraded motherboard with reserved expansion slot for option boards

040 = Continuous rated output current: 40Arms

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

FW = Factory preloaded general-purpose standard firmware, supports basic three-loop control without dedicated cam motion algorithm

Technical Specifications

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

DC Bus Parameter: Nominal 700VDC, built-in 4.7Ω pre-charge soft-start resistor, internal dynamic brake with 0.15kW continuous bleeder power, max energy dissipation 5.0kWs

Output Performance: 40A continuous rating, 250% overload sustain for 300ms, fixed 8kHz PWM carrier frequency, maximum output frequency 800Hz

Dimension & Weight: W65mm × H360mm × D215mm, net weight approx 5.1kg, built-in axial cooling fan, IP20 cabinet vertical DIN installation

Ambient Rating: Full-load operating temperature 0~40℃; storage temperature -20℃~+80℃; rated installation altitude ≤1000m, relative humidity＜90% non-condensing, pollution degree 2; static power loss 180W

Interface & Communication Configuration

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

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

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

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

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

Core Functions

Standard FW firmware integrates full position/speed/torque three closed-loop control; supports analog speed regulation, pulse position control, I/O triggered multi-step fixed-position running. Equipped with STO safe torque off function and comprehensive fault protection including overcurrent, DC bus over/undervoltage, power module overtemperature, encoder wire break, with front LED digital fault code display; no built-in electronic cam and multi-axis synchronization function compared with FM dedicated firmware variant.

Application Fields

CNC lathe/milling feed axes, conventional rotary printing machinery, medium-load slitting & winding equipment, single-axis automatic packaging equipment, general-purpose automated assembly lines.

Operation & Maintenance Instructions

Type-7 high voltage model exclusively for AC380~480V three-phase input; 220V single-phase misconnection will trigger persistent DC bus undervoltage alarm and insufficient output torque.

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

Frequent forward-reverse cyclic operation must configure external high-power braking resistor to avoid internal bleeder overheating damage.

Parameter downloading and debugging need matched DriveTop software edition corresponding to factory FW firmware version.