Hersteller: BECKHOFF
Produkt-Nr.: EL7211
Herkunftsland:Deutschland
Produkttyp: EtherCAT Motion Modules
Zahlung: T/T, Western Union
Gewicht: 2000g
Abmessungen: 12 mm x 100 mm x 68 mm
Versandhafen: Xiamen
Garantie: 12 Monate
Direct integration of compact drive technology into the standard EtherCAT I/O architecture is achieved via the Beckhoff EL7211 servomotor terminal. This high-density 12 mm module provides a complete 1-channel motion interface designed for controlling permanent magnet-excited three-phase synchronous motors (servomotors) up to 48 V DC and 4.5 A RMS continuous output. By incorporating a dedicated resolver feedback interface, an integrated 24 V DC motor brake controller, and high-frequency PWM switching, this terminal delivers precise field-oriented current and speed control directly from the modular I/O segment.
| Parameter | Specification |
|---|---|
| Manufacturer | Beckhoff |
| Model Number | EL7211 |
| Load Type | Permanent magnet-excited three-phase synchronous motor |
| Number of Channels | 1 |
| Feedback Interface | 1 x Resolver feedback input |
| Supply Voltage (Electronics) | 24 V DC (via power contacts) |
| Supply Voltage (Power) | 8 to 48 V DC (external supply required) |
| Output Current (RMS) | 4.5 A continuous |
| Peak Output Current (RMS) | 9.0 A maximum for up to 1 second |
| Current Consumption (E-bus) | Typical 120 mA |
| Current Consumption (Power Contacts) | Typical 50 mA + motor brake holding current |
| Rotating Field Frequency | 0 to 599 Hz |
| PWM Clock Frequency | 16 kHz |
| Current Controller Frequency | 32 kHz |
| Motor Brake Output | 24 V DC, maximum 0.5 A |
| Electrical Isolation | 500 V RMS (E-bus to field potential) |
| Operating Temperature | 0 to +55 degC |
| Storage Temperature | -25 to +85 degC |
| Relative Humidity | 95%, non-condensing |
| Ingress Protection Rating | IP20 |
| Dimensions (W x H x D) | 12 mm x 100 mm x 68 mm |
| Weight | Approx. 95 g |
| Shipping Weight (Estimated) | 2.0 kg (with protective system packaging) |
The EL7211 functions seamlessly within standard Beckhoff EtherCAT Coupler topologies (such as EK1100 or EK1200). Note that when replacing older motion terminals, ensure your TwinCAT system manager configurations are updated to match the revision level of the replacement unit. Standardize on the EL7211 for resolver systems; for encoder feedback interfaces, evaluate the alternative EL7201 or EL7221 series.
When operating multiple EL7211 terminals side-by-side at high loads (approaching the continuous 4.5 A limit), thermal dissipation in enclosed electrical cabinets must be tightly managed. High continuous output current generates localized heat inside the 12 mm housing. To prevent thermal trip faults (overtemperature errors in TwinCAT), maintain adequate ventilation flow or install thermal separation terminals (such as standard feed-through blocks) between adjacent high-power motion segments.
Always utilize high-quality, double-shielded twisted pair cabling for both the resolver feedback signal and the motor phases. Tie the cable shields directly to the ground plane near the entry of the terminal rail to mitigate high-frequency PWM switching noise. Incorrect grounding schemes often present as encoder deviation errors or unstable position feedback loop responses during high acceleration profiles.
CRITICAL WARNING: ELECTRICAL HAZARD
Isolate all 24 V DC control power and 48 V DC external motor power sources before mounting, removing, or wiring the module. High-voltage residual charges can destroy sensitive drive electronics and pose severe physical shock hazards to field personnel.
Mount the EL7211 onto a standard 35 mm DIN rail (conforming to EN 60715). Slide the unit laterally along the rail until the double slot-and-key connection locks securely into the neighboring EtherCAT terminal.
Prepare wire terminations. Use a flat-head screwdriver to actuate the spring-clamp terminals. Strip solid or flexible conductors to exactly 8 to 9 mm. Wire cross-sections should range from 0.08 to 1.5 mm² (AWG 28 to 16) depending on the conductor type.
Connect the external 8 to 48 V DC motor power supply to the designated power contacts, ensuring correct polarity. Wire the servomotor power phases, resolver feedback channels, and 24 V mechanical brake line directly into the HD connector array.
Apply bus power first to verify successful E-bus network communication via system LEDs, then energize the external field drive power contacts.
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| Country of origin |
Deutschland
|
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