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Absolute Rotary Pulse Encoder GEL 2310
Absolute Encoder GEL 2310
Rotary Pulse Encoder Features
- Singleturn ST
- Multiturn MT with volatile memory
- High resolution ST up to 16 Bit
- High accuracy ± 0.1 °
- Clock rate: SSI upt to 2 MHz
- Sin/Cos differential signals 1 Vpp with 128 periodes per revolution
- Radial cable outlet
- Dew-point-proof
- Protection class up to IP 40
- Measuring principle: magnetic, high resolution
- Evaluation: Nonius-principle
- Measuring scale: metallic measuring scale, nonius disk
- Installation depth: 15 mm
General Absolute Encoder Information
The GEL 2310 series of singleturn absolute encoders delivers unique position values at every angular position via digital interfaces with a resolution of up to 16 bits. It also supports the optional output of sin/cos differential signals.
Compact Design
The absolute encoder exhibit a particularly compact design with an external diameter of 60 mm and a height of just 15 mm. It is ideal for integration in machinery. Two GEL 2310s can be used for redundant measuring to satisfy increased security requirements (presence of persons in the system's positioning range).
Robust Construction
- The anodised aluminium housing is very resistant and fully encapsulated (IP 40).
- The new metallic measuring scale (nonius disc) withstands high shock and vibration levels.
- The hollow shaft has an internal diameter of up to 15 mm.
- A new type of compact clamping ring provides torque support (patent pending) and minimises installation time.
Nonius algorithm
The measurement principle of the GEL 2310 series is based on the magnetic scanning of a new type of nonius disc made of ferromagnetic steel. Magnetoresistive sensors scan three tracks and deliver three corresponding sinusoidal signals. The phase position of these three sinusoidal signals is evaluated on the basis of the nonius principle with high resolution and accuracy, immediately delivering the absolute position.
Magnetic Measuring Principle
- withstands high shock and vibration levels
- not influenced by dirt or oil mist
- long-term stability of temperature characteristics
- full functionality in the presence of condensation: dew-point-proof
- no aging of the magnetic sensor elements
Interface
The absolute rotary encoder supplies the position values in a binary or gray code via a fast SSI interface. In addition, it delivers high-interpolateable sin/cos differential signals with 1 Vpp signal level. The optional programming of code, resolution, counting direction and PRESET values is also possible. Dynamic motion processes can be securely controlled with 16-bit singleturn resolution and a high data rate up to 2 MHz for SSI mode. An optional feature permits the output of the number of revolutions. This multiturn function is based on a volatile memory that loses its content when de-energised. The feature is only available on request.
Technical Data
| General | |
| Incremental deviation | < 0.01° |
| Repeatability | < 0.01° |
| Accuracy | 0.1° (better 11 Bit) |
| Electrical data | |
| Voltage supply | 10 to 30 V DC with reverse voltage protection |
| Interface | SSI, SSI and Sin/Cos |
| SSI | 60 kHz to 2 MHz (clock pulse space16 µs) |
| Mechanical Data | |
| Housing diameter | 60 mm |
| Housing High | 15 mm |
| Material | aluminium anodised |
| Weight | 200 g |
| Operating Speed | 3,000 min-1 (Fr = 30 N); 6,000 min-1 (Fr = 5 N) |
| Shaft load axial | 10 N |
| Shaft load radial | 30 N |
| Bearing Life | > 109 h at 1,000 min-1 |
| Operating speed | < 1 Ncm |
| Connection | 9-cores cable, cable cross section 0.15 mm2, outside diameter 5 mm (-0.3 mm), min. bending radius 25 mm |
| Cable material | halogen-free PUR (AWG 22) |
| Environmental data | |
| Protection class | IP 40 |
| Shock protection (IEC 68, 2-27) | 2000 m/s2, 11 ms |
| Vibration protection (IEC 68, 2-6) | 200 m/s² |
| Working temperature | -20 °C to +85 °C |
| Operating temperature | -20 °C to +85 °C |
| Storage temperature | -20 °C to +85 °C |
| Relative humidity of air max. | 100 % |
| Condensation | permissible |
| EMC | according EN 61000-6-1 to -4 |
| Insulation strength | Ri > 1 MΩ at 500 V AC |
Dimension Drawing Gel 2310
The diameter of the hollow shaft can be adjusted and other customer-specific modifications can be performed.
Pin Layout SSI, Sin/Cos
Cable Outlet SSI
PRESET adjustment SSI
A PRESET value can be set in the absolute rotary encoder by applying VS to pink (t > 100 ms). ZERO is set as the default singleturn value (corresponds to a RESET).
SSI
The absolute rotary encoder GEL 235 transmits its position data via a fast Synchron-Seriell-Interface (SSI) with up to 2 MHz data rate using binary or Gray Code. With increasing data rate the allowed cable length using the SSI mode decreases (see table cable length) and a minimum pause time of 16 µs is necessary before the next request for position data can be started.
Sin/Cos differential signal
For real-time control high interpolateable Sin/Cos differential signals 1 Vpp are supported.
Cable Length
Using SSI protocol the allowed data rates are reduced as the cable length increases. It is recommended that the wires of ± Clock and ± Data are each in twisted pair configuration each while the cable is shielded.
| Cable length/m | Clockrate / kHz |
| < 50 | < 400 |
| < 100 | < 300 |
| < 200 | < 200 |
| < 400 | < 100 |
Accessories
Preliminary tension in the radial and axial directions can be minimised by using a flexible torque support. For further mounting material such as brackets, coupling equipment, etc. please refer to our technical information for the encoder accessories program.
Type code GEL 2310
Additional resolutions or adaptations available on request.
