EL3312
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Overview of Siemens EL3312 EtherCAT Terminal
The Siemens EL3312 is a 2-channel analog input EtherCAT terminal designed specifically for temperature measurement using thermocouples. It supports various thermocouple types and enables precise temperature measurement and processing with 16-bit resolution. With built-in cold junction compensation, linearization over the full temperature range, and wire break detection, the EL3312 ensures reliable and accurate temperature data for industrial automation systems.
Key Features
- Supports 2 thermocouple input channels with 2-wire connection method.
- Compatible with thermocouple types B, C, E, J, K, L, N, R, S, T, U (default type K).
- 16-bit resolution and configurable temperature or mV representation.
- Cold junction compensation using internal temperature sensor.
- Wire break detection for each channel to signal errors.
- Input filter frequency typically 1 kHz with configurable filter settings.
- Electrical isolation of 500 V between E-bus and signal voltage for safety.
- Conversion time adjustable from 1.2 seconds to 20 ms, default 125 ms.
- Robust polycarbonate housing with IP20 protection, DIN rail mountable.
- Conforms to industry standards and certifications including CE, UL, ATEX, and IECEx.
Technical Specs
| Specification | Details |
|---|---|
| Model | EL3312 |
| Number of Inputs | 2 |
| Input Type | Thermocouple (2-wire) |
| Thermocouple Types | B, C, E, J, K, L, N, R, S, T, U |
| Resolution | 16 bit |
| Conversion Time | 1.2 s to 20 ms (configurable) |
| Filter Frequency | 1 kHz (typical, configurable) |
| Cold Junction Compensation | Internal temperature sensor |
| Wire Break Detection | Yes, per channel |
| Electrical Isolation | 500 V (E-bus/signal voltage) |
| Operating Temperature | -25°C to +60°C |
| Protection Rating | IP20 |
| Dimensions (W x H x D) | 12 mm x 100 mm x 68 mm |
| Weight | Approx. 60 g |
| Mounting | DIN rail, EN 60715 |
| Certifications | CE, UL, ATEX, IECEx |
Applications / Use Case
Designed for precise temperature monitoring in industrial automation, process control, and environmental monitoring systems. The EL3312 terminal is ideal for integrating thermocouple sensors with EtherCAT networks for reliable and accurate temperature data acquisition.
Siemens ensures robust and high-accuracy temperature measurement terminals meeting industry
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