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Description
The EL1904 TwinSAFE component is a digital input terminal for sensors with potential-free contacts for 24 V DC. It has four fail-safe inputs. The signals are transmitted via FSoE to a TwinSAFE Logic-capable component and can be used there to evaluate them in terms of safety.
The EL1904 has safety parameters to adapt the functionality specifically to the respective safety-oriented requirements (e.g., 1-channel evaluation vs. 2-channel evaluation, testing of the individual channels).
The safety parameters are not stored directly on the component, but are transmitted to the input terminal via a TwinSAFE Logic-capable component when the safety application is started. This simplifies service procedures, because the component can simply be replaced. The safety-relevant parameters are transferred to the new component when the safety application is restarted.
Special features:
- 4 safe inputs
- cross-circuit detection
- 1-channel vs. 2-channel evaluation directly on the component
- testing of the channels can be activated individually
| Technical data | EL1904 |
|---|---|
| Connection technology | 1-/2-wire |
| Number of inputs | 4 |
| Protocol | TwinSAFE/Safety over EtherCAT |
| Response time | typ. 4 ms (read input/write to E-bus) |
| Fault response time | ≤ watchdog time (parameterizable) |
| Current consumption power contacts | see documentation |
| Current consumption E-bus | typ. 200 mA |
| Installation position | horizontal |
| Safety standard | DIN EN ISO 13849-1:2008 (Cat. 4, PL e) and EN 61508:2010 (SIL 3) |
| Weight | approx. 50 g |
| IP protection rating | IP20 |
| Ex marking | ATEX: II 3 G Ex nA IIC T4 Gc IECEx: Ex ec IIC T4 Gc |
Housing data | EL-12-8pin |
|---|---|
| Design form | compact terminal housing with signal LEDs |
| Material | polycarbonate |
| Dimensions (W x H x D) | 12 mm x 100 mm x 68 mm |
| Installation | on 35 mm DIN rail, conforming to EN 60715 with lock |
| Side by side mounting by means of | double slot and key connection |
| Marking | labeling of the BZxxx series |
| Wiring | solid conductor (e), flexible conductor (f) and ferrule (a): spring actuation by screwdriver |
| Connection cross-section | s*: 0.08…2.5 mm², st*: 0.08…2.5 mm², f*: 0.14…1.5 mm² |
| Connection cross-section AWG | s*: AWG 28…14, st*: AWG 28…14, f*: AWG 26…16 |
| Stripping length | 8…9 mm |
| Current load power contacts | Imax: 10 A |
*s: solid wire; st: stranded wire; f: with ferrule
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