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Stepper Motor Terminal, 50 V DC, 5 A, Vector Control

The AKT2G-SM-L50-000  EtherCAT Terminal is intended for the direct connection of stepper Motors in the mid power range up to 5 A and a voltage range from 8-50 V. The compact stepper motor output stage is incorporated in the EtherCAT Terminal together with two digital inputs for limit switches. Through parameterization, the AKT2G-SM-L50-000 can be adjusted to the motor and the application requirements. 64-fold micro-stepping ensures particularly quiet and precise motor operation. The output current of the terminal can be increased to 6.5 A in conjunction with the AKT2G-AC-FAN-001 fan cartridge.

Product available worldwide


Technical DataAKT2G-SM-L50-000
Number of outputs1 stepper motor, 2 phases
Number of digital inputs2 limit position, 4 for an encoder system
Number of digital outputs1 configurable for brake (0.5 A)
Supply voltage8 … 50 V DC
Motor Current/Phase (RMS) values without fan cartridge ZB86103.53 A
Motor Current/Phase (RMS) values with fan cartridge ZB86104.59 A
Maximum output current without fan cartridge AKT2G-AC-FAN-0015 A (overload- and short-circuit-proof)
Maximum output current with fan cartridge AKT2G-AC-FAN-0016.5 A (overload- and short-circuit-proof)
Operating modes             
  • Standard mode (velocity direct / position controller)
  • Field-oriented control (extended velocity mode / extended position mode)
  • Sensorless operation
  • Travel distance control (positioning interface)
Maximum step frequency1000, 2000, 4000, 8000 or 16000 full steps/s (configurable)
Step patternup to 64-fold micro stepping (automatic switching, speed-dependent)
Current controller frequencyapprox. 30 kHz
Encoder pulse frequencymaximum 400,000 increments/s (4-fold evaluation)
Input signal voltage "0"-3 V … 2 V
Input signal voltage "1"3.7 V … 28 V
Input Currenttyp. 5 mA
Diagnostics LEDWarning strand A and B, error strand A and B, power, enable
Resolutionapprox. 5,000 positions in typical applications (per revolution)
Power Supplyvia the E-bus, encoder/driver stage: via the power contacts, motor: via terminal contacts
Current consumption from the E-bustyp. 140 mA
Electrical isolation500 V (E-bus/signal voltage)
Support NoCoEStorageyes
Configurationno address setting required
Weightapprox. 105 g
Permissible ambient temperature range during operation0°C ... +55°C
Permissible ambient temperature range during storage-25°C ... + 85°C
Permissible relative humidity95%, no condensation
Dimensions (W x H x D)approx. 27 mm x 100 mm x 70 mm (connected width: 24 mm)
Installationon 35 mm mounting rail according to EN 60715
Vibration / shock resistanceconforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emissionaccording to EN 61000-6-2 / EN 61000-6-4
            according to IECClosed/EN 61800-3
EMC categoryCategory C3 - standard
            Category C2, C1 - auxiliary filter required
Protection classIP 20
Installation position             
  • without fan cartridge ZB8610: standard installing position
  • with fan cartridge ZB8610: standard installing position, other installing positions (example 1 & 2)
ApprovalCE cULus

Media & Downloads

Title File Language Date Share URL
AKT2G I/O Manual EN English
Share URL /sites/default/files/public_downloads/AKT2G_IO.pdf
Title File Language Date Share URL
AKT2G-SDI-004-000 TUV Certification English
Share URL /sites/default/files/public_downloads/AKT2G-SDI-004%20TUV%20Certitication%20Rev.00.pdf
AKT2G-SDO-004-000 TUV Certification English
Share URL /sites/default/files/public_downloads/AKT2G-SDO-004%20TUV%20Certitication%20Rev.00.pdf
Kollmorgen EU Declaration of Conformity AKT2G (DE) English
Share URL /sites/default/files/public_downloads/ce_AKT2G%20IO_e.pdf

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