The ETAS ES650.1 is an A/D and Thermo Module designed for measuring analog input voltages and temperatures, primarily for applications in the automotive sector. It is a robust and compact device, part of the ES6xx series of measurement and interface modules, engineered for use in harsh environmental conditions such as vehicle interiors, passenger cells, or trunks. It is not suitable for installation in engine compartments or similar environments.
Function Description:
The ES650.1 provides eight galvanically isolated measurement channels for analog voltages and eight galvanically isolated measurement channels for thermocouples. This isolation ensures accuracy even when the housing is not uniformly heated and protects against common-mode interference. The module is designed for high sampling rates, high resolution, and accuracy across its extensive ambient temperature range.
For analog input voltages, the module offers two input voltage ranges: ±10 V DC and ±60 V DC. The resolution for these channels is 16 bits, with an inaccuracy of 2 mV in the 10 V range and 12 mV in the 60 V range. Each analog input channel features a 4th order low-pass hardware input filter with a cutoff frequency of 1 kHz and a maximum overshooting of 3%. Additionally, a digital Bessel 2nd order low-pass filter with an adjustable cutoff frequency (between 1 Hz and 1 kHz with 1 Hz resolution) can be enabled or disabled. When set to automatic, the digital filter's cutoff frequency is 0.5 times the sample rate.
For temperature measurements, the ES650.1 supports B-, E-, J-, K-, N-, R-, S-, and T-type thermocouples. The thermocouple channels have a resolution of 21 bits, corresponding to 0.01 K for J-, K-, and N-type thermocouples. Each thermocouple channel is equipped with cold junction compensation directly in the connector to ensure accuracy. The maximum measuring range for thermocouples varies depending on the type, from -210 °C to +1,820 °C. The sampling rate for thermocouple inputs is configurable from 0.1 to 10 samples/sec per channel, and a 10 Hz cutoff frequency is applied.
The module features a powerful Ethernet interface for high-speed data exchange with a host PC. It supports synchronous data acquisition, even in large module networks, by superimposing a periodic synchronization signal onto the Ethernet signals. This prevents phase shifts between individual signals from different modules.
The ES650.1 also incorporates an automatic power-saving feature. It switches from a power-saving standby mode to operation mode when it receives link pulses via the Ethernet interface from a connected PC. If no link signals are received, it automatically returns to standby mode after a delay.
Configuration and data acquisition for the ES650.1 are exclusively performed via software, specifically using INCA's graphical user interface (GUI). INCA V4.0 or higher is required for configuration, and INCA V5.2.1 and HSP4.1 are necessary for using B-, E-, R-, S-, and T-type thermocouples.
Important Technical Specifications:
- Analog Voltage Inputs:
- Channels: 8, galvanically isolated
- Resolution: 16 bits
- Measuring Ranges: ±10 V DC, ±60 V DC
- Maximum Inaccuracy: 0.05% + 2 mV (±10 V range), 0.05% + 12 mV (±60 V range)
- Sampling Rate: 0.5 to 2000 samples/sec (configurable per channel)
- Input Impedance: > 15 MΩ || 1 nF (±10 V range), 2 MΩ || 1 nF (±60 V range)
- Maximum Input Voltage (input-to-input, input-to-ground): 60 V DC / 30 V AC
- Hardware Input Filter: 4th order low-pass, 1 kHz cutoff, max. 3% overshooting
- Digital Low-Pass Filter: Bessel 2nd order, adjustable 1 Hz to 1 kHz
- Thermocouple Inputs:
- Channels: 8, galvanically isolated
- Resolution: 21 bits (0.01 K for J-, K-, N-types)
- Supported Types: B, E, J, K, N, R, S, T
- Measuring Range: -210 °C to +1,820 °C (type dependent)
- Sampling Rate: 0.1 to 10 samples/sec (configurable per channel)
- Cutoff Frequency: 10 Hz
- Input Impedance: > 10 MΩ || 10 nF
- Maximum Allowed Input Voltage: 32 V DC
- Power Supply:
- Operating Voltage: 7 to 29 V DC (reverse-polarity protected, load-dump protected)
- Power Consumption: max. 5.6 W (operation), typ. 50 mW (standby)
- Fuse: MINI, fast, 58 V, 3 A
- Host Interface:
- Port: Base-T Ethernet, 10 Mbps
- Protocol: TCP/IP
- IP Address: Dynamic via INCA
- Environmental Conditions:
- Operating Temperature: -40 °C to +70 °C (-40 °F to +158 °F)
- Storage Temperature: -40 °C to +85 °C (-40 °F to +185 °F)
- Relative Humidity: 0 to 95% (non-condensing)
- Protection Class: IP20
- Implementation Altitude: max. 5000 m / 16400 ft
- Mechanical Data:
- Dimensions (H x W x D): 72 mm x 126 mm x 160 mm
- Weight: 1,085 g
Usage Features:
- Robust Housing: The ES650.1 features a rugged, functional metal housing with non-slip plastic feet, designed for stability and easy mounting in vehicles or labs.
- Modular System: The ES6xx series modules can be mechanically connected to each other using supplied T-brackets, allowing for the creation of larger blocks of units. This facilitates flexible system configurations.
- Easy Installation: The module can be screwed onto a support system after removing the plastic feet, revealing screw threads for secure fastening.
- Clear Indicators: Three LEDs (ON, TX, ER) on the front panel provide visual feedback on the module's operational status, including power, standby, synchronization, host connection, data transfer, and error conditions.
- Simplified Cabling: While special connection cables are available for purchase, users can also manufacture their own, provided they adhere to pin assignments and ensure proper shielding and grounding. ETAS emphasizes using only ETAS cables and observing maximum permissible cable lengths and voltages.
- Software-Controlled Configuration: The absence of physical switches or controls means all configuration is handled through INCA software, streamlining the setup process.
- Calibration Service: ETAS offers a calibration service for the ES650.1, with a recommended interval of 12 months, to ensure continued measurement accuracy. This includes factory calibration and accredited adjustment services according to ISO/IEC 17025.
Maintenance Features:
- Maintenance-Free: The product is designed to be maintenance-free.
- Cleaning: The module housing can be cleaned with a dry or lightly moistened, soft, lint-free cloth. Sprays, solvents, abrasive cleaners, or direct spraying onto the module should be avoided to prevent damage and moisture ingress.
- Repair: In case of a defect, the product should be returned to ETAS for repair. Users are explicitly warned not to open or modify the module housing, as this can damage the module and compromise its IP20 protection.
- Recycling: The ES650.1 is marked with the WEEE symbol, indicating that it should not be disposed of as residual garbage. Users are obliged to return old devices to the WEEE take-back system for resource-saving recycling.
- Software Updates: While the product uses Open Source Software, it is installed at delivery and does not require user installation or updates. Information on OSS licensing terms is available on the ETAS website.
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