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Sendix M3668R
Sendix M3668R

Encoders Absolute multiturn

Sendix M3668R

  • Standalone operation in emergency
  • Particularly resistant
  • Magnetic – robust
  • Without gear with 100% magnetic insensitivity
  • Dimension Ø 36 mm
  • 14 bits singleturn
  • 18 bits multiturn
  • Max 10 mm shaft, with flat surface
  • Max 1/4" shaft, with flat surface
IO-Link

Energy Harvesting Technology: Electronic multiturn encoders – extremely robust!

The Sendix M36 with Energy Harvesting Technology is an electronic multiturn encoder in miniature format, without gear and without battery. It is characterized by robustness, reliability and cost-efficiency. The “R”obust version is particularly suitable for use in harsh environments. Protected up to IP69k, resistance against shock and extreme temperature fluctuations, the Sendix M36 encoder is suitable even for demanding outdoor applications.

Mechanical
Dimension Ø 36 mm
Shaft type 6 mm shaft, with flat surface
8 mm shaft, with flat surface
10 mm shaft, with flat surface
1/4 " shaft, with flat surface
Flange type Clamping flange

Ø 42.00 mm
Working temperature -40 °C ... +85 °C
Protection level IP66
IP67
IP69k
Connection types M12 connector axial
M12 connector radial
Max. rotational speed 4.000 min-1
Weight 250 g
Electrical
Scanning magnetic
Resolution max. 14 bits singleturn
18 bits multiturn
Power supply 10...30 V DC
Interfaces IO-Link
Options
on request
  • EX protection zone 2/22
  • Other shaft diameter in stainless steel V4A
Highest robustness
  • Sturdy bearing construction in Safety-Lockplus™ design for particularly high resistance.
  • Extra large bearings.
  • Mechanically protected shaft seal.
  • Protection level IP66, IP67 and IP69k in one device.
  • Wide temperature range -40 °C ... +85 °C.
  • Without gear and without battery, thanks to the Energy Harvesting technology.

Up-to-the-minute performance
  • Operation possible with any IO-Link master.
  • Point-to-point communication in automation networks.
  • Use of cost-effective unshielded cables possible.
  • Automatic saving of device parameters.
  • Firmware update via IO-Link.
Data sheet

M3668R - IO-Link

PDF ∼ 503,5 KB | 10.2025
DE
EN
FR
Operation Manual

Operation manual for encoders

Multilingual: German, English, French
PDF ∼ 2,9 MB | 09.2025

Manual

Encoder with IO-Link Interface

PDF ∼ 2,9 MB | 09.2025
DE
EN
Safety characteristics

Sistema-Library

Multilingual: German, English, French
ZIP ∼ 6,3 MB | 09.2025

Sendix M3668R MTTFd

Multilingual: German, English
PDF ∼ 215,3 KB | 09.2025

Declaration of conformity

Sendix M3668 / M3668R / M3688 / M5868 IO-Link CE

Multilingual: German, English
PDF ∼ 70,7 KB | 09.2025

Mechanical CAD / STEP

Sendix M366XR

ZIP ∼ 1,6 MB | 09.2025

Electronic CAD / ePlan

Sendix M3668 / M3668R

ZIP ∼ 3,2 MB | 09.2025

Product Certificates

UL CoC USA/ Canada - Encoders

PDF ∼ 503,1 KB | 09.2025
EN

Accessories

Bellows coupling

Bellows coupling

Bellows couplings are used for the cost-optimized connection of motor and encoder. In addition, a correction of angular errors between drive and encoder is achieved. Compensation for larger axial errors.

Bellows coupling (stainless steel).
8.0000.1102.XXXX
Data sheet
Bellows and spring washer couplings
DE EN FR
Mechanical CAD / STEP
Bellows and spring washer couplings

Simple connection for any Ethernet protocol.

Simple connection for any Ethernet protocol.

Different variants for the EtherNet/IP, EtherCAT and PROFINET protocols with 4 Class A ports.
Existing field devices that send classic switching signals can also be operated in SIO mode via the Class A ports.
IOL4A.124341.1222XX
Operation Manual
IO-Link Master Ethernet/IP
DE EN
Operation Manual
IO-Link Master Profinet
DE EN
Operation Manual
IO-Link Master EtherCAT
DE EN

Simple connection for any Ethernet protocol.

Simple connection for any Ethernet protocol.

Different variants for the EtherNet/IP, EtherCAT and PROFINET protocols with 4 Class A and 4 Class B ports.
Existing field devices that send classic switching signals can also be operated in SIO mode via the Class A ports.
IOL4A4B.1L8341.1L21XX
Operation Manual
IO-Link Master Ethernet/IP
DE EN
Operation Manual
IO-Link Master Profinet
DE EN
Operation Manual
IO-Link Master EtherCAT
DE EN

Cables and connectors

M12 Connector with cable ,

M12 Connector with cable ,

Preassembled cable set

Analog ±10 V
IO-Link
Power supply
Female connector 4-pin PUR Ø 5,2 mm ± mm
4x0,34 mm2
05.00.6061.6211.XXXM

Data sheet
M12 cordset, PUR, socket, 4-pin, A-coded, open end
DE EN FR

M12 Connector with cable ,  mit Edelstahl Überwurf

M12 Connector with cable , mit Edelstahl Überwurf

Preassembled cable set

IO-Link
Power supply
Female connector 4-pin PUR Ø 5,2 mm ± mm
4 x 0,34 mm2
05.00.6061.D311.XXXM

Data sheet
M12, PUR, socket, 4-pin, A-coded, stainless steel - 05.00.6061.D311
DE EN FR

M12 Connector with cable ,  mit Edelstahl Überwurf

M12 Connector with cable , mit Edelstahl Überwurf

Preassembled cable set

IO-Link
Power supply
Male connector 4-pin

Female connector 4-pin PUR Ø 5,2 mm ± mm
4 x 0,34 mm2
05.00.6061.D4D2.XXXM

Data sheet
M12, PUR, socket, 4-pin, A-coded, stainless steel + pin - 05.00.6061.D4D2
DE EN FR

M12 Connector ,

M12 Connector ,

Field-wireable connector

Analog ±10 V
IO-Link
Power supply
Female connector 4-pin
05.B8141-0

Data sheet
M12 socket, 4-pin, A-coded
DE EN FR

M12 Connector ,  Stainless steel V4A

M12 Connector , Stainless steel V4A

Field-wireable connector

IO-Link
CANopen
CANopen-Lift
SAE J1939
Modbus
Power supply
Female connector 5-pin
8.0000.5116.0000.V4A

Data sheet
M12 socket, stainless steel V4A, 5-pin, A-coded
DE EN FR

„Do you have technical questions about Kübler encoders or are you looking for individual solutions? We at Application Support are here for you.“

Rainer Grueninger
Application support
Rainer Grueninger
Application Engineer

support@kuebler.com
+49 7720 3903 764

„We will be pleased to give you information about prices and delivery times. We are looking forward to your inquiry.“

Fritz Kübler GmbH
Sales
Fritz Kübler GmbH
Sales Germany

info@kuebler.com
+49 7720 3903 871
+49 7720 21564