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Kollmorgen Support Network

AKM

This page covers AKM, AKM Washdown, and AKM Washdown Food Grade motors. This motor series can be used for high dynamic and high precision applications. The motors are high performance and run extremely smooth. They offer multiple connector and feedback options.

AKM motors are available in 8 sizes, while the Washdown and Food Grade variants are available in 5 sizes

Technical data of all available motor windings can be found in the motor manual on page AKM PDF Archive. Technical data of the built-in holding brakes are on page Holding Brake.

Part Number Scheme

Available Feedback Systems

Code Feedback Remarks
1-/2- Comcoder 1024 / 2048 lines, single turn
AA/AB BiSS B single turn / multi turn
C- SFD single turn, for AKD drives only
CA SFD3 single turn, for AKD and S300/S700 drives only
DA/DB EnDAT 2.1 single turn / multi turn
LA/LB EnDAT 2.1 single turn / multi turn
MA/MB DRIVE-CLiQ single turn / multi turn, thermal sensor according to current Siemens requirements, for Siemens drives only
GA/GB Hiperface single turn / multi turn, optical, for S 300/400/600/700 drives, AKM2-8
GC/GD Hiperface single turn / multi turn, capacitive, for S 300/400/600/700 drives, AKM1
GE/GF Hiperface DSL single turn / multi turn, optical, for AKD and S300/S700 drives, AKM2-6
GJ/GK Hiperface single turn / multi turn, optical, for AKD drives, AKM2-8
GM/GN Safety Hiperface single turn / multi turn, optical, with PTC thermal sensor only, for AKD drives, AKM2-8, Datasheet, SIL2/PLd/CAT/3 Certificate
GP/GR Hiperface single turn / multi turn, capacitive, for AKD drives, AKM1
R- Resolver single turn 

For more details, see MultiFeedback 

Washdown & Food Grade Information

AKM versions "W" (Washdown) and "F" (Washdown Food) are resistant against industrial cleaners.
The part number scheme defines the coating of the motor housing (type "W" for Washdown and "F" for Washdown Food) in the "Customization" code (last two digits) and the flange coating separated.
Part Numbers:

AKMzzz-yyyyy-0W Washdown with unpainted flange
AKMzzz-Wyyyy-0W Washdown with painted IEC A flange
AKMzzz-yyyyy-0F Washdown Food with unpainted flange
AKMzzz-Wyyyy-0F Washdown Food with painted IEC A flange

Certificates of the test laboratory Ecolob Deutschland GmbH:

Washdown

Target Market Rough environment, outside use.
For example: transport in food and beverage industry without contact to beverage/food, radar&network stations, wind turbines, naval applications
Standards UL, CE, EAC, RohS
Surface Gray 2K paint
Resistancy Against tested cleaning agents (see Test Report ), corrosion resistant
Protection class IP67
Shaft stainless steel (EN 1.4305 / AISI 303)
Shaft seal PTFE
Lubricant industrial lubricant for bearings, not suitable for food stuff
Connectors stainless steel, flat surface
Screws Stainless Steel
Size AKM2, 3, 4, 6 all flange types, AKM5 with Nema flange "B" only

Washdown Food

Target Market food and beverage industry, no direct contact to food.
For example: slicing, packaging and filling without direct contact to food or beverage. Motor below or beside the food.
Standards UL, CE, EAC, RohS, FDA
Surface White 2K paint. The surface has passed all tests according to FDA Global Migration for indirect contact to food. A direct contact to food is not allowed.
Resistancy Against tested cleaning agents (see Test Report), corrosion resistant
Global Migration Complies 21 CFR 175.300 of the US FDA Regulations, Condition of Use E (see Certificate)
Protection class IP67
Shaft stainless steel (EN 1.4305 / AISI 303)
Shaft seal PTFE
Lubricant lubricant for bearings suitable for food stuff
Connectors stainless steel, flat surface
Screws Stainless Steel
Name Plate Engraved, additional name plate in the package
Size AKM2, 3, 4, 6 all flange types, AKM5 with Nema flange "B" only 
Trade Compliance English
Bethany…
Grounding and Shielding Landing Page (Prevent Noise Issues) English
Ann Pater
Speedtec Cable Notice (O-Ring) English
Will…
Mean Time Between Failure AKD AKM Gen 1 English
JohnKeesee
Ingress Protection of Servo Motors English
JohnKeesee
Configurando Motores com Freio no Workbench Portuguese, Brazil
Leonardo…
Wiring Pin-Out For AKM with Commutating Encoder to B8000 Series Drives English
Mark.…
Resolver Based AKM Motors to CD Series Drives English
Mark.…
Incremental Encoder AKM motors to CD Series Drives English
Mark.…
What commutation offset do Kollmorgen motors have?
DBL / DBK with Encoder Feedback has no defined commutation offset. The commutation offset is determined with the help of the servo amplifier and stored in the encoder memory.
AKM with Hiperface encoder Encoder is installed arbitrarily. The commutation offset is determined with the aid of the servo amplifier and stored in the encoder memory.
AKM with BiSS encoder Encoder is installed arbitrarily. Commutation offset is set to zero electronically.
AKM with EnDat encoder Commutation offset is mechanically set to zero.
What is the maximum value for motor temperature sensor (PTC)?

That depends on the servo amplifier that is used.

S300 5.0 kOhm
S400 2.0 kOhm
S600 1.6 kOhm
S700 5.0 kOhm
Which parameters affect synchronism of the servo motors?

See page Synchronism.

What motor is described by motor number 19071?

That is an AKM72M (480V). A list of all motor numbers can be found in the Motor Database, available from the Downloads page.

What is meant by four quadrant operation?
Is it possible to test a servomotor by connecting it directly to the main supply?

No, this is forbidden. Connecting a motor directly to the main supply will destroy the motor. Refer to the chapter "Use as directed" in the instructions manual.

Is it possible to suppress the motor cogging?

Yes, for the Servostar line it is possible with S300 and S700. See page Cogging Suppression for details. For AKD drive family the feature is available in firmware version 1.15 See Cogging Compensation for details.

I want to replace a 6SM servomotor with an AKM. What motor type is required?

See the Reference table.

I am experiencing positioning errors with AKM1 motors. What can I do?

Low rotor inertia is the source for this problem, ironless linear motors show a similar behavior.

Solution for drives with S300/S700 servo amplifiers:

Increase the bandwidth of the current control loop with the Smith Predictor (FILTMODE = 2). Refer to page Tuning: Delay Time Compensation with Smith Predictor.