The AVM78E-021K2A0GN-1212 is a replacement model we have independently developed to serve as a compatible alternative to the original TR absolute encoder. This upgraded version maintains full electrical and mechanical compatibility, ensuring seamless integration into existing control systems without requiring design modifications. The standard lead time for this encoder replacement is approximately 15 working days, providing both reliability and prompt availability for industrial users.
Technically, this encoder offers high-resolution absolute position feedback and adopts a robust through-hollow shaft design, making it suitable for precise rotary motion detection under harsh operating conditions. The model is engineered for heavy-duty applications where vibration resistance and signal integrity are critical, such as servo drives, lifting systems, and large rotary actuators. The wiring interface and mechanical fittings follow the same specifications as the original TR encoder, simplifying plug-and-play installation.
Replacement solution image.


Technical Data for Multiturn Absolute Rotary Encoder AVM78E
General Specifications
| Attribute | Details |
|---|---|
| Detection Type | Photoelectric Sampling |
| Device Type | Multiturn Absolute Rotary Encoder |
| Functional Safety | MTTFd: 210 a, L10: 7.7 E+9 at 3000 rpm |
| Operating Voltage (U_B) | 10 … 30 V DC |
| No-load Supply Current (I_0) | max. 90 mA |
| Linearity | ± 2 LSB at 16 Bit, ± 1 LSB at 13 Bit, ± 0.5 LSB at 12 Bit |
| Output Code | Gray Code, Binary Code |
| Interface Type | SSI (Synchronous Serial Interface) |
| Monoflop Time | 20 ± 10 µs |
| Resolution | Single Turn: Up to 16 Bit Multiturn: Up to 14 Bit Overall: Up to 30 Bit |
| Transfer Rate | 0.1 … 2 MBit/s |
Standard Conformity
| Attribute | Standard |
|---|---|
| Degree of Protection | DIN EN 60529, IP66 |
| Climatic Testing | DIN EN 60068-2-78, no moisture condensation |
| Emitted Interference | EN 61000-6-4:2007/A1:2011 |
| Noise Immunity | EN 61000-6-2:2005 |
| Shock Resistance | DIN EN 60068-2-27, 100 g, 3 ms |
| Vibration Resistance | DIN EN 60068-2-6, 10 g, 10 … 2000 Hz |
Approvals and Certificates
| Attribute | Details |
|---|---|
| ATEX Approval | Equipment protection level Gb, ITS 15 ATEX 18372X |
| IECEx Approval | Equipment protection level Gb, IECEx ITS 15.0061X |
Ambient Conditions
| Attribute | Range |
|---|---|
| Operating Temperature | -40 … 70 °C (-40 … 158 °F) |
| Storage Temperature | -40 … 85 °C (-40 … 185 °F) |
Mechanical Specifications
| Attribute | Details |
|---|---|
| Material (Housing) | Anodized Aluminum, Stainless Steel 1.4404 / AISI 316L (Inox) |
| Material (Flange) | Anodized Aluminum, Stainless Steel 1.4404 / AISI 316L (Inox) |
| Shaft Material | Stainless Steel 1.4404 / AISI 316L |
| Mass | approx. 2600 g (combination 1), approx. 3900 g (combination 2) |
| Rotational Speed | max. 3000 min^-1 |
| Moment of Inertia | 180 gcm^2 |
| Starting Torque | ≤ 4 Ncm |
| Shaft Load | Axial: 60 N, Radial: 80 N |
Additional Information
| Attribute | Details |
|---|---|
| Material Options | - Housing: Anodized Aluminum - Flange: Anodized Aluminum - Shaft: Stainless Steel 1.4404 / AISI 316L - (Inox) All Stainless Steel |
| Shaft Dimensions | 12 mm x 25 mm with flats at 120° |
| Cable Connection | ∅ 10.2 mm, Radox 9 x 0.5 mm² |
| Terminal Compartment | Options available, see ordering information |
