Processing precise differential 1 VPP signals for high-performance motion feedback, the Beckhoff EL5021-0090 EtherCAT Terminal incorporates integrated TwinSAFE SC (Single Channel) technology to enable safety-related data transmission in standard control environments. This terminal interfaces seamlessly with high-resolution SinCos encoders, utilizing a 70 MHz internal scanning system to process input frequencies up to 250 kHz with a max resolution of 13 bits per period. Built-in error detection flags signal degradation, amplitude faults, and frequency boundaries, allowing for real-time diagnostic visibility directly within the TwinCAT architecture.
| Parameter | Specification |
|---|---|
| Manufacturer | Beckhoff Automation |
| Model / Article Number | EL5021-0090 |
| Technology | SinCos encoder interface for differential 1 VPP signal |
| Number of Channels | 1 |
| Encoder Interface Inputs | 1 x A, B, C: differential inputs 1 VPP: A, A (inv), B, B (inv), C, C (inv) |
| Encoder Operating Voltage | 5 V DC / max. 0.5 A (derived from 24 V DC power contacts) |
| Counter Range | Max. 24 bit (adjustable) |
| Input Frequency | 250 kHz (internal scanning of input signals at 70 MHz) |
| Nominal System Voltage | 24 V DC (-15% / +20%) |
| Resolution | Max. 13 bit, 8192 steps per period |
| Current Consumption (E-Bus) | Typically 120 mA |
| Current Consumption (Power Contacts) | Typically 50 mA + encoder load |
| Distributed Clocks (DC) | Yes, supported |
| Electrical Isolation | 500 V (E-bus / field potential) |
| Operating Temperature | 0 to +55 degC |
| Storage Temperature | -25 to +85 degC |
| Vibration/Shock Resistance | Conforms to EN 60068-2-6 / EN 60068-2-27 |
| EMC Immunity/Emission | Conforms to EN 61000-6-2 / EN 61000-6-4 |
| Approvals & Markings | CE, UL, ATEX (II 3 G Ex nA IIC T4 Gc) |
| Dimensions (W x H x D) | 12 mm x 100 mm x 68 mm |
| Connection Cross-Section (AWG) | Solid/Stranded: AWG 28...14; Ferrule: AWG 26...16 |
| Net Weight | Approximately 55 g |
| Shipping Weight (Calculated) | 2.0 kg (with protective export packaging) |
| Country of Origin | Germany |
| Terminal Point | Signal Name | Function / Description |
|---|---|---|
| 1 | A + | Positive differential input channel A (1 VPP) |
| 2 | B + | Positive differential input channel B (1 VPP) |
| 3 | C + | Positive differential input channel C / Zero pulse (1 VPP) |
| 4 | +5 V Out | Encoder power supply output (+5 V DC, max. 0.5 A) |
| 5 | A - | Negative differential input channel A (1 VPP) |
| 6 | B - | Negative differential input channel B (1 VPP) |
| 7 | C - | Negative differential input channel C / Zero pulse (1 VPP) |
| 8 | 0 V Out | Encoder power supply ground (0 V DC) |
The EL5021-0090 acts as the safety-enhanced alternative to the standard EL5021-0000. While they share identical physical dimensions and signal wiring assignments, the -0090 contains TwinSAFE SC logic. Integrating the EL5021-0090 into an existing system requires mapping the safety process data objects (PDOs) inside TwinCAT 3 (using the TwinSAFE SC helper protocol). If a direct drop-in replacement is performed on a system where standard TwinSAFE SC parameters are not declared in the project, the PLC will fail to initialize the EtherCAT state machine beyond Pre-OP due to XML device description mismatches.
E-Bus Current Allocation: The EL5021-0090 has a high E-bus current draw of 120 mA. When grouping multiple high-speed encoder interfaces on a single EK1100 coupler, you must calculate the total E-bus current. If the cumulative load exceeds 2 A, a secondary power feed terminal (such as EL9410) must be added immediately before the encoder modules to prevent voltage drops on the E-bus and subsequent bus interruption faults.
Signal Attenuation: 1 VPP differential signals are highly susceptible to noise over long distances. High-frequency operations (>150 kHz) require low-capacitance, double-shielded twisted-pair cabling. Keep distances between the encoder and the terminal under 20 meters; longer lengths risk triggering "Amplitude Error" diagnostics in the TwinCAT status word.
To bypass noise-induced commissioning errors, verify that the encoder cable shield is terminated to an earth-ground bar immediately before entering the terminal block. Avoid running the 1 VPP encoder cables parallel to high-power motor power cables inside the wire ducting. When commissioning in TwinCAT, activate the diagnostic PDOs to monitor the Amplitude Error and Frequency Error flags. This allows on-site technicians to diagnose mechanical encoder misalignments or bad cable terminations before putting the axis into operation.
CRITICAL WARNING
De-energize all 24 V DC power contacts and the main E-bus supply before installing, removing, or wiring the terminal. Inserting or removing the EL5021-0090 under load can damage the internal E-bus transceiver chips and corrupt the TwinSAFE SC safety validation state in the safety group.
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Manufacturer: BECKHOFF
Product No.: EL5021-0090
Country of origin:Germany
Product Type: EtherCAT Terminals
Payment: T/T, Western Union
Weight: 2000g
Dimensions: 12 mm x 100 mm x 68 mm
Shipping port: Xiamen
Warranty: 12 months
Processing precise differential 1 VPP signals for high-performance motion feedback, the Beckhoff EL5021-0090 EtherCAT Terminal incorporates integrated TwinSAFE SC (Single Channel) technology to enable safety-related data transmission in standard control environments. This terminal interfaces seamlessly with high-resolution SinCos encoders, utilizing a 70 MHz internal scanning system to process input frequencies up to 250 kHz with a max resolution of 13 bits per period. Built-in error detection flags signal degradation, amplitude faults, and frequency boundaries, allowing for real-time diagnostic visibility directly within the TwinCAT architecture.
| Parameter | Specification |
|---|---|
| Manufacturer | Beckhoff Automation |
| Model / Article Number | EL5021-0090 |
| Technology | SinCos encoder interface for differential 1 VPP signal |
| Number of Channels | 1 |
| Encoder Interface Inputs | 1 x A, B, C: differential inputs 1 VPP: A, A (inv), B, B (inv), C, C (inv) |
| Encoder Operating Voltage | 5 V DC / max. 0.5 A (derived from 24 V DC power contacts) |
| Counter Range | Max. 24 bit (adjustable) |
| Input Frequency | 250 kHz (internal scanning of input signals at 70 MHz) |
| Nominal System Voltage | 24 V DC (-15% / +20%) |
| Resolution | Max. 13 bit, 8192 steps per period |
| Current Consumption (E-Bus) | Typically 120 mA |
| Current Consumption (Power Contacts) | Typically 50 mA + encoder load |
| Distributed Clocks (DC) | Yes, supported |
| Electrical Isolation | 500 V (E-bus / field potential) |
| Operating Temperature | 0 to +55 degC |
| Storage Temperature | -25 to +85 degC |
| Vibration/Shock Resistance | Conforms to EN 60068-2-6 / EN 60068-2-27 |
| EMC Immunity/Emission | Conforms to EN 61000-6-2 / EN 61000-6-4 |
| Approvals & Markings | CE, UL, ATEX (II 3 G Ex nA IIC T4 Gc) |
| Dimensions (W x H x D) | 12 mm x 100 mm x 68 mm |
| Connection Cross-Section (AWG) | Solid/Stranded: AWG 28...14; Ferrule: AWG 26...16 |
| Net Weight | Approximately 55 g |
| Shipping Weight (Calculated) | 2.0 kg (with protective export packaging) |
| Country of Origin | Germany |
| Terminal Point | Signal Name | Function / Description |
|---|---|---|
| 1 | A + | Positive differential input channel A (1 VPP) |
| 2 | B + | Positive differential input channel B (1 VPP) |
| 3 | C + | Positive differential input channel C / Zero pulse (1 VPP) |
| 4 | +5 V Out | Encoder power supply output (+5 V DC, max. 0.5 A) |
| 5 | A - | Negative differential input channel A (1 VPP) |
| 6 | B - | Negative differential input channel B (1 VPP) |
| 7 | C - | Negative differential input channel C / Zero pulse (1 VPP) |
| 8 | 0 V Out | Encoder power supply ground (0 V DC) |
The EL5021-0090 acts as the safety-enhanced alternative to the standard EL5021-0000. While they share identical physical dimensions and signal wiring assignments, the -0090 contains TwinSAFE SC logic. Integrating the EL5021-0090 into an existing system requires mapping the safety process data objects (PDOs) inside TwinCAT 3 (using the TwinSAFE SC helper protocol). If a direct drop-in replacement is performed on a system where standard TwinSAFE SC parameters are not declared in the project, the PLC will fail to initialize the EtherCAT state machine beyond Pre-OP due to XML device description mismatches.
E-Bus Current Allocation: The EL5021-0090 has a high E-bus current draw of 120 mA. When grouping multiple high-speed encoder interfaces on a single EK1100 coupler, you must calculate the total E-bus current. If the cumulative load exceeds 2 A, a secondary power feed terminal (such as EL9410) must be added immediately before the encoder modules to prevent voltage drops on the E-bus and subsequent bus interruption faults.
Signal Attenuation: 1 VPP differential signals are highly susceptible to noise over long distances. High-frequency operations (>150 kHz) require low-capacitance, double-shielded twisted-pair cabling. Keep distances between the encoder and the terminal under 20 meters; longer lengths risk triggering "Amplitude Error" diagnostics in the TwinCAT status word.
To bypass noise-induced commissioning errors, verify that the encoder cable shield is terminated to an earth-ground bar immediately before entering the terminal block. Avoid running the 1 VPP encoder cables parallel to high-power motor power cables inside the wire ducting. When commissioning in TwinCAT, activate the diagnostic PDOs to monitor the Amplitude Error and Frequency Error flags. This allows on-site technicians to diagnose mechanical encoder misalignments or bad cable terminations before putting the axis into operation.
CRITICAL WARNING
De-energize all 24 V DC power contacts and the main E-bus supply before installing, removing, or wiring the terminal. Inserting or removing the EL5021-0090 under load can damage the internal E-bus transceiver chips and corrupt the TwinSAFE SC safety validation state in the safety group.
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
Germany
|
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