First TwinCAT PLC Project on a Beckhoff IPC
Build and verify a first TwinCAT PLC project on a Beckhoff IPC. This checklist covers target selection, EtherCAT discovery, I/O mapping, safe activation, restart tests, and commissioning records.
Manufacturer: BECKHOFF
Product No.: EL1918-2200
Country of origin:Germany
Product Type: TwinSAFE Safety Terminals
Payment: T/T, Western Union
Weight: 2000g
Dimensions: 12 mm x 100 mm x 68 mm
Shipping port: Xiamen
Warranty: 12 months
Designed to integrate directly into the EtherCAT I/O system, the Beckhoff EL1918-2200 is an ultra-compact TwinSAFE terminal engineered for the decentralized connection of safety-related sensors. This 8-channel digital input module transmits safe signals via Safety over EtherCAT (FSoE) to a TwinSAFE Logic-capable component, enabling reliable execution of safety functions in complex industrial automation architectures. Featuring 1-wire or 2-wire connection technology, the module combines high-density packaging with robust processing diagnostics to meet strict global safety metrics.
| Parameter | Value / Specification |
|---|---|
| Manufacturer | Beckhoff |
| Model Number | EL1918-2200 |
| Safety Standards | EN ISO 13849-1:2015 (Cat. 4, PL e), EN 61508:2010 (SIL 3) |
| Protocol | TwinSAFE / Safety over EtherCAT (FSoE) |
| Number of Safe Inputs | 8 |
| Connection Technology | 1-/2-wire |
| Fault Response Time | ≤ watchdog time (parameterizable) |
| E-bus Current Consumption | typ. 165 mA |
| Power Contacts Current Load | max. 10 A |
| IP Protection Rating | IP20 |
| Housing Material | Polycarbonate (HD housing) |
| Solid Wire Cross-Section | 0.08 to 1.5 mm² (AWG 28 to 16) |
| Stranded Wire Cross-Section | 0.25 to 1.5 mm² (AWG 22 to 16) |
| Ferrule Wire Cross-Section | 0.14 to 0.75 mm² (AWG 26 to 19) |
| Stripping Length | 8 to 9 mm |
| Net Weight | approx. 50 g |
| Shipping Weight (Calculated) | 0.15 kg (single unit packaging) |
| Dimensions (W x H x D) | 12 mm x 100 mm x 68 mm |
While the standard EL1908 offers 8 digital inputs, the EL1918-2200 variant utilizes high-density termination for complex safety mapping and features optimized processing logic parameters. Note that this terminal requires a valid TwinSAFE Logic master (such as an EL6910 or a TwinCAT safety PLC configuration) to execute safe logic functions. Compatibility requires TwinCAT 3.1 or higher for optimal parameter configuration and FSoE protocol handling.
A major deployment hazard involves E-bus power budgeting. The EL1918-2200 consumes typically 165 mA from the E-bus. In large nodes populated with multiple safety or analog slices, the internal 5V supply line can quickly saturate. Always recalculate your E-bus current draw in TwinCAT System Manager; insert an EL9410 power supply terminal if the total current exceeds the couplers capacity (typically 2A for standard EtherCAT couplers).
When wiring the High Density (HD) spring connections, ensure that ferrules are crimped square and do not exceed 0.75 mm². Use a specialized flat-blade screwdriver to actuate the spring contacts for stranded conductors without pre-crimped ferrules. Keep the stripping length strictly between 8 and 9 mm to avoid exposing bare copper or preventing full contact seating, which can cause intermittent safety channel faults.
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Returns & Warranty
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| Country of origin |
Germany
|