Eltra Rotary Absolute Encoders with Absolute rotary encoders provide a uniquely coded numerical value for each mechanical shaft position, memorizing the value of the current position and thus avoiding the loss of information in case of restart of the machine or interruption of the power supply.
Thanks to the many advantages of this type of encoder, Eltra’s offer for this category is constantly growing, always keeping up with the latest technological innovations, in order to significantly extend the range of action of the encoders and to increase them to at the same time, flexibility and versatility, based on customer specifications.
Eltra mono and multiturn rotary absolute encoder lines
The operating principle of the mono and multiturn absolute encoders can be optical, which guarantees a high resolution and is therefore suitable for applications requiring greater precision and accuracy, or magnetic, particularly suitable for sectors requiring high speed and greater resistance to wear, temperatures, and IP protection. The reliability and performance characteristics typical of Eltra encoders obviously remain, with the possibility of supplying the device in the most varied combinations of both electronic and mechanical interfaces.
ELTRA OPTICAL SINGLETURN ABSOLUTE ENCODERS
Eltra EA 58-63 Parallel / SSI Encoder
Description
Solid shaft EA 58 – EA 63 (ø 58-63 mm) series of optical single-turn absolute encoders, with parallel or SSI electronics. This series has cable connector output and protection class up to IP 66; Gray and binary code output with several electronics are available to allow broad use in all industry fields. E
Technical Features
| External diameter (max) | 63 mm |
| Shaft diameter (max) | 10 mm |
| Resolution (max) | 13 bit |
| Output frequency (max) | 25 kHz |
| Operating temperature (°C) | 0° … +60° |
| Enclosure rating | IP 66 |
Eltra EA 58 F – EA 63 F / G – Parallel / SSI – Blind hollow shaft Encoder
Description
Blind hollow shaft EA 58 – EA 63 (ø 58-63 mm) series of optical single-turn absolute encoders, with parallel or SSI electronics. This series has cable connector output and protection class up to IP 66; Gray and binary code output with several electronics are available to allow broad use in all industry fields. EA5
Technical features
| External diameter (max) | 90 mm |
| Shaft diameter (max) | 15 mm |
| Resolution (max) | 13 bit |
| Output frequency (max) | 25 kHz (par.) / 100 kHz … 1 MHz (SSI) |
| Operating temperature (°C) | 0° … +60° |
| Enclosure rating | IP 66 |
Eltra EA 90-115 A/B/C/D/E – Parallel / SSI – Solid shaft Encoder
Description
Solid shaft EA 90 – EA 115 (ø 90-115 mm) series of optical single-turn absolute encoders, with parallel or SSI electronics. This series has cable connector output and protection class up to IP 66; Gray and binary code output with several electronics are available to allow broad use in all industry fields. E
Technical features
| External diameter (max) | 115 mm |
| Shaft diameter (max) | 11 mm |
| Resolution (max) | 13 bit |
| Output frequency (max) | 25 kHz (par.) / 100 kHz … 1 MHz (SSI) |
| Operating temperature (°C) | 0° … +60° |
| Enclosure rating | IP 66 |
Eltra EAR 58-63 A / B / C / D / E – Bit Parallel / SSI – Solid shaft Encoder
Description
Solid shaft EAR 58 – EAR 63 (ø 58-63 mm) series of optical single-turn absolute encoders, with Bit parallel or SSI electronics. This series is designed for applications that require excellent accuracy, even in extended linear displacements, as well as mechanical and electronic features that ensure a great performance also in the most difficult environments. EAR58 EAR63
Technical features
| Shaft diameter (max) | 10 mm |
| External diameter (max) | 63 mm |
| Resolution (max) | 25 bit |
| Output frequency (max) | 50 kHz (Par.) / 1 MHz (SSI) |
| Operating temperature (°C) | -40° … +100°C (-40° … +212°F) |
| Enclosure rating | IP 67 |
Eltra EAR 58-63 F / G – Bit Parallel / SSI – Blind hollow shaft Encoder
Description
Blind hollow shaft EAR 58 – EAR 63 (ø 58-63 mm) series of optical single-turn absolute encoders, with Bit parallel or SSI electronics. This series is designed for applications that require excellent accuracy, even in extended linear displacements, as well as mechanical and electronic features that ensure a great performance also in the most difficult environments. EAR58 EA
Technical features
| External diameter (max) | 63 mm |
| Shaft diameter (max) | 15 mm |
| Resolution (max) | 25 bit |
| Output frequency (max) | 50 kHz (Par.) / 1 MHz (SSI) |
| Operating temperature (°C) | -40° … +85°C (-40° … +185°F) |
| Enclosure rating | IP 67 |
MAGNETIC SINGLETURN ABSOLUTE ENCODERS
Eltra EMA 22 A – SSI Encorder
Description
Not for a new design, EOL notification.
EMA 22 (ø 22 mm) is a miniaturized absolute encoder featuring magnetic technology, for which it can be employed in particularly harsh environments, for instance, in the electric motors marine industry, iron and steel industry, textile machines, wood, paper, glass, marble working machinery and, more generally, automation and process control fields. Besides the compact size, this series is characterized by the absence of physical contact between the encoder and the motor shaft, which enables high operation speed (up to 10.000 ppr). EMA2
Technical features
| External diameter (max) | 22 mm |
| Shaft diameter (max) | 10 mm |
| Resolution (max) | 13 bit |
| Output frequency (max) | 100 kHz … 1 MHz |
| Operating temperature (°C) | -40° … +125° |
| Enclosure rating | IP 67 |
Eltra EA 36 A – solid shaft Encoder
Description
Not for new design, please consider the EMA36 B series for the new design.
Singleturn absolute EA 36 (ø 36 mm) encoder series, developed with contact-less magnetic technology. It has a sturdy construction (separated chambers) and it’s a very compact and adaptable product, easy to set up (code reset). Several flanges (both for solid and hollow shafts) allow different mechanical mountings. EA36
Technical features
| External diameter (max) | 36 mm |
| Shaft diameter (max) | 6 mm |
| Resolution (max) | 12 bit |
| Output frequency (max) | 100 kHz … 1 MHz |
| Operating temperature (°C) | -20° … +85° |
| Enclosure rating | IP 67 / 65 |
Eltra EMA 36 B – solid shaft Encoder
Description
Singleturn absolute EMA 36 (ø 36 mm) encoder series, developed with contact-less magnetic technology. It has a sturdy construction and it’s a very compact and adaptable product, easy to set up (code reset). Several flanges (both for solid and hollow shafts) allow different mechanical mountings. EMA3
Technical features
| External diameter (max) | 36 mm |
| Shaft diameter (max) | 6 mm |
| Resolution (max) | 15 bit |
| Output frequency (max) | 100 kHz … 1 MHz |
| Operating temperature (°C) | -30° … +100° |
| Enclosure rating | IP 67 / IP 65 |
| Linearity | ± 0,35° max |
Eltra EMA 36 F / G – Blind hollow shaft Encoder
Description
Singleturn absolute EMA 36 (ø 36 mm) encoder series, developed with contact-less magnetic technology. It has a sturdy construction and it’s a very compact and adaptable product, easy to set up (code reset). Several flanges (both for solid and hollow shafts) allow different mechanical mountings. EMA36
Technical features
| External diameter (max) | 36 mm |
| Shaft diameter (max) | 6 mm |
| Resolution (max) | 15 bit |
| Output frequency (max) | 100 kHz … 1 MHz |
| Operating temperature (°C) | -30° … +100° |
| Enclosure rating | IP 67 / 65 |
| Linearity | ± 0,35° max |
Eltra EMA 50 A / B – Solid shaft Encoder
Description
Magnetic singleturn absolute EMA 50 (ø 50 mm) encoder series for solid shaft mounting systems. Several mechanical flanges (also anodized), SSI and parallel outputs, and a power supply of up to 30 Vdc are available for this model. E
Technical features
| External diameter (max) | 50 mm |
| Shaft diameter (max) | 10 mm |
| Resolution (max) | 13 bit |
| Output frequency (max) | 25 kHz (par.) / 100 kHz … 1 MHz (SSI) |
| Operating temperature (°C) | -25° … +85° |
| Enclosure rating | IP 67 |
OPTICAL MULTITURN ABSOLUTE ENCODERS
Eltra AAM 38 F BiSS – Blind Hollow shaft Encoder
Description
The AAM 38 series is a miniaturized optical multiturn absolute encoder for high-end applications. Thanks to the BiSS-C interface and high resolution it can be used in robotics, motor feedback, and CNC machines.
Technical features
| External diameter (max) | 38 mm |
| Shaft diameter (max) | 8 mm |
| Resolution (max) | 23-bit ST / 16-bit MT |
| Output frequency (max) | 80 kHz … 10 MHz |
| Operating temperature (°C) | -20° … +105° |
| Enclosure rating | IP 50 |
Eltra EAM 58-63 A / B / C / D / E – Parallel / SSI – Solid shaft Encoder
Description
Solidshaft EAM 58 – EAM 63 (ø 58-63 mm) series of optical multiturn absolute encoders, with parallel or SSI electronics. This series is designed for applications that require excellent accuracy, even in extended linear displacements, as well as mechanical and electronic features that ensure a great performance also in the most difficult environments. EAM58 EAM63
Technical features
| External diameter (max) | 63 mm |
| Shaft diameter (max) | 10 mm |
| Resolution (max) | 13-bit ST / 14-bit MT |
| Output frequency (max) | 25 kHz (par.) / 100 kHz … 1 MHz (SSI) |
| Operating temperature (°C) | 0° … +60° |
| Enclosure rating | IP 66 |
Eltra EAM 58 F – EAM 63 F / G – Parallel / SSI – Hollow shaft Encoder
Description
Blind hollow shaft EAM 58 – EAM 63 (ø 58-63 mm) series of optical multiturn absolute encoders, with parallel or SSI electronics. This series is designed for industries that require excellent accuracy on extended linear displacements; it has cable connector output and protection class up to IP 66, gray, and binary code output with several electronics available to allow broad use in all industry fields. EAM58 EAM63
Technical features
| External diameter (max) | 63 mm |
| Shaft diameter (max) | 15 mm |
| Resolution (max) | 13-bit ST / 14-bit MT |
| Output frequency (max) | 25 kHz (par.) / 100 kHz … 1 MHz (SSI) |
| Operating temperature (°C) | 0° … +60° |
| Enclosure rating | IP 54 |
Eltra EAM 90-115 Parallel / SSI Encoder
EAM 90-115 A – Parallel / SSI – Solid shaft
Description
Solid shaft EAM 90 – EAM 115 (ø 90 e 115 mm) series of optical multiturn absolute encoders, with parallel or SSI electronics. This series is designed for applications that require excellent accuracy, even in extended linear displacements, as well as mechanical and electronic features that ensure a great performance also in the most difficult environments. EAM90 EAM115
Technical features
| External diameter (max) | 115 mm |
| Shaft diameter (max) | 11 mm |
| Resolution (max) | 13-bit ST / 14-bit MT |
| Output frequency (max) | 25 kHz (par.) / 100 kHz … 1 MHz (SSI) |
| Enclosure rating | IP 66 |
| Operating temperature (°C) | 0° … +60° |
Eltra EAMH 58-63 A / B / C / D / E – SSI – Solid shaft Encoder
Description
Solidshaft EAMH 58 – EAMH 63 (ø 58-63 mm) series of optical multiturn absolute encoders, with SSI electronics. This series is designed for applications that require excellent accuracy, even in extended linear displacements, as well as mechanical and electronic features that ensure a great performance also in the most difficult environments. EAMH58 EAMH63
Technical features
| External diameter (max) | 63 mm |
| Shaft diameter (max) | 10 mm |
| Resolution (max) | 18-bit ST / 30-bit MT |
| Output frequency (max) | 100 kHz … 1 MHz |
| Operating temperature (°C) | -40° … +100°C (-40° … +212°F) |
| Enclosure rating | IP 67 |
| Linearity | ± 250 arc-sec |
MAGNETIC MULTITURN ABSOLUTE ENCODER
Eltra AAM 36 F CANOPEN Encoder
Description
Magnetic multiturn absolute AAM 36 (ø 36 mm) encoder series. The multiturn counting is developed with an innovative self-powered Energy Harvesting Technology, based on the Wiegand system, so the encoder doesn’t need gears or batteries. AAM 36 is a high-resolution, extremely sturdy (separated chambers), compact and versatile solution, easy to set up thanks to the CANopen interface. AAM
Eltra EAM 36 F CANOPEN Encoder
Description
Magnetic multiturn absolute EAM 36 (ø 36 mm) encoder series. The multiturn counting is developed with an innovative self-powered Energy Harvesting Technology, based on the Wiegand system, so the encoder doesn’t need gears or batteries. EAM 36 is a high-resolution, extremely sturdy, compact, and versatile solution, easy to set up (code reset). EAM36
Technical features
| External diameter (max) | 36 mm |
| Shaft diameter (max) | 10 mm |
| Resolution (max) | 14-bit ST / 24-bit MT |
| Output frequency (max) | 10 kBaud … 1 Mbaud |
| Operating temperature (°C) | -40° … +85° |
| Enclosure rating | IP 67 / IP 65 |
| Linearity | ± 0,35° |
Eltra EAM 36 F / G – Blind hollow shaft Encoder
| External diameter (max) | 36 mm |
| Shaft diameter (max) | 6 mm |
| Resolution (max) | 15-bit ST / 40-bit MT |
| Output frequency (max) | 100 kHz … 1 MHz |
| Operating temperature (°C) | -30° … +100° |
| Enclosure rating | IP 67 / IP 65 |
| Linearity | ± 0,35° max |
Altra AAM 36 B CANOPEN Encoder
Description
Magnetic multiturn absolute AAM 36 (ø 36 mm) encoder series. The multiturn counting is developed with an innovative self-powered Energy Harvesting Technology, based on the Wiegand system, so the encoder doesn’t need gears or batteries. AAM 36 is a high-resolution, extremely sturdy (separated chambers), compact and versatile solution, easy to set up thanks to the CANopen interface. AAM36
Technical Features
| External diameter (max) | 36 mm |
| Shaft diameter (max) | 6 mm |
| Resolution (max) | 14-bit ST / 24-bit MT |
| Output frequency (max) | 10 kBaud … 1 Mbaud |
| Operating temperature (°C) | -40° … +85° |
| Enclosure rating | IP67 / IP65 |
| Linearity | ± 0,35° |
Source: www.eltra.it
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