AKM43E-EKCNR-01

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The AKM43E-EKCNR-01 Is manufactured by Kollmorgen and features a max BUS of 640 and max Tp of 20.4 Nm. The AKM series also featured a max rated force of 6000 and max rated power of 1.73 kW.

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Product Description:

Servomotors are different from ordinary DC motors because they offer precise control over acceleration, velocity, and position. These specially-crafted motors are used in a wide range of applications, such as robotics, automated machines, and CNC machines. Kollmorgen is a reputable name when it comes to producing state-of-the-art synchronous motors. The company has launched several different series, one of which, is the AKM series. This series stands out because of the high-efficiency which the servo motors provide. These brushless servos have the ability to produce high-density power despite their lightweight and low voltage consumption. The AKM series by Kollmorgen showcases seven different categories with each exhibiting a specific flange size and standstill torque.

The AKM43E-EKCNR-01 brushless synchronous motor belongs to the AKM4 family, featuring a flange size of 84 mm and a standstill torque up to 6 Nm. This servo motor model features a three-stack rotor that consists of a neodymium-iron-boron magnet. The rare-earth magnet generates a high amount of energy at a relatively low voltage. Kollmorgen offers three voltage variants of this model, including 230V, 400V and 480V variants. The 230V variant has a rated speed and rated power of 1500 RPM and 670 watts, respectively. The 480V variant offers a rated speed of 3000 RPM and its rated power is 1.18 kW. Overall, this brushless servo motor features a standstill torque of 4.70 Nm while its maximum torque, at 7500 RPM, is 15.90 Nm. To ensure protection of the internal motor components, the servomotor features F-class insulation material that can withstand up to 155 degrees Celsius.

The AKM43E-EKCNR-01 synchronous motor features a powerful shaft with a seal. This ensures maximum voltage conversion and minimum power loss. The servomotor also has a built-in resolver as the only feedback option available.

Brake
No brake
Customization
With shaft seal
Feedback device
Resolver
Frame Size
84 mm
Poles
10
Rotor length
3
Shaft
Open keyway
Thermal time constant
20 min
Weight
4.35 kg
Winding code
E
  • AKM-43E-EKCNR-01
  • AKM43E-EKCNR-O1
What you observe Probable cause First things to try
Drive trips F219 “Motor over-temperature” within minutes Stator PTC has reached ≈155 °C Reduce load, improve cabinet airflow, verify fan and ambient ≤ 40 °C, check sensor wiring to X9
F226 “DC-bus undervoltage” at accel/decel Mains dip or brake-resistor oversized Check mains fuses, lengthen decel ramp, test DC-link caps
F228 “Position/velocity deviation” after mechanical work Loose coupling/backlash or inertia mismatch Re-home axis, tighten hub, re-tune AKD servo-loop gains 
Sporadic F229 encoder quadrant error Resolver/EnDat feedback noise Inspect feedback cable for shield continuity, route away from motor power pair
Motor shaft hot to touch, no fault Radial shaft seal running dry or bearing wear Check for mis-alignment, replace seal, re-grease/replace bearings 
High vibration at nominal speed Rotor unbalance or keyed-hub loosened Verify key fit, re-balance per AKM manual spec (G = 6.3) 
Audible “cogging” at very low speed Incorrect commutation offset Run AKD “Hall/Resolver alignment” wizard, save parameters 
Brake will not release (unit has spring brake option) Undersized 24 V brake supply Measure brake-coil voltage while enabling, size PSU +20 % headroom 
Shaft seal leaks oil / IP65 lost Seal damaged by dry run or over-pressure Fit new IP65 seal, add vent/drain, avoid > 5 psi housing pressure 
Insulation test < 100 MΩ to ground Moisture ingress in stator Bake motor at 80 °C for 8 h, re-test; if ≤ 10 MΩ replace stator 
Code Meaning
F219 Motor over-temperature – PTC/NTC > 155 °C
F218 Drive heatsink over-temp – cabinet airflow blocked
F220 Bleeder-resistor overload during fast decel
F221 Motor-temperature sensor open/short
F226 DC-bus undervoltage (< 560 V dc)
F228 Excessive position/velocity deviation
F229 Encoder quadrant error – noisy resolver/Hiperface signals
F230 Encoder max-frequency exceeded – overspeed or noise
F234 E-Stop active / +24 V removed
F405 “Phase regression” – drive lost SERCOS / EtherCAT sync
Model Continuous/Stall Torque (Nm) Peak Torque (Nm) Max Speed (rpm) Max DC-bus (V) Weight (kg)
AKM43E-EKCNR-01 4.7 15.9 7 500 640 4.35
AKM42E-EKCNR-00 3.42 11.5 4 000  640 3.29 
AKM43E-GCC2R-00 4.7 15.9 6 000  640 4.35
AKM43G-EKCNR-01 1.54 6 000  640 (max)  4.15
AKM44E-EKMNR-00 5 3 000  8
AKM43E-ANCNR-00 4.70  6 000 

Frequently Asked Questions about AKM43E-EKCNR-01:

Q: What is the benefit of a shaft seal?

A: A shaft seal provides enhanced protection against contaminant ingress.

Q: What is protection rating of the motor?

A: With the shaft seal, the motor protection rating is IP67.

Q: What is a resolver?

A: A resolver is a type of rotary position sensor that is used to determine the angular position of a motor shaft.

Q: What is the benefit of motor feedback?

A: Real-time motor feedback allows very precise control of motor speed and position.

Q: Is the motor deployed as a standalone unit?

A: The motor forms part of a servo system that includes a compatible servo amplifier.


Internal Product Review

  • ‘‘AKM43E-EKCNR-01 is a servo motor with a shaft that includes a seal for enhanced ingress protection.’’

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