ELMxxxx | Measurement technology

The ELM3102-0100 EtherCAT Terminal of the basic series is a version of the ELM3702-0101 that is reduced to voltage and current measurement. It offers the measuring ranges +60 V…-20 mV and ±20 mA at a fast sampling rate of 20 ksps per channel. Due to the galvanic isolation between the channels, it can detect signals that are at different or fluctuating potentials with high accuracy in complex environments.

The 2-, 4-, 6- or 8-channel ELM314x EtherCAT Terminals in the Economy line can be set to current or voltage measurement channel by channel, offering sampling rates of up to 1 ksps per channel. Analog signals in the ranges from В±1.25 to В±10В V, 0 to 10В V, В±20В mA or 0/4 to 20В mA can be processed. The settings for U or I measurement mode and the desired measuring ranges can be selected via the control system and TwinCAT in the CoE interface. Here it is also possible to select the extensive diagnostics features for unattended long-term use. The 2-, 4- or 6-pin push-in connectors can be removed for maintenance purposes, they enable a direct supply of connected sensors. The power contacts on the side simplify the potential distribution directly on the DIN rail. The typical EtherCAT features are available: distributed clocks functionality with timestamp and the familiar data features of the basic line such as filtering, true RMS calculation and more.

The 4- and 8-channel EtherCAT Terminals from the ELM334x economy series are designed for temperature measurement with thermocouples. All common thermocouple types are covered and, with a sampling rate of 1В ksps per channel, fast processes are also easy to record. The resolution is adjustable to 0.001В°C. The channel properties can be adjusted individually for each channel via CoE. An exceptionally high measuring accuracy is achieved through the precise measurement of the internal cold junction.

The ELM350x EtherCAT Terminals are designed for the evaluation of measuring bridges in full-bridge, half-bridge and quarter-bridge configuration. The terminals feature internally switchable supplementary resistors. The feed is integrated. Like all other parameters, the supply voltage is adjustable in the CoE. Irrespective of the signal configuration, all ELM modules have the same technological properties. The ELM350x modules for the evaluation of measuring bridges offer a maximum sampling rate of 10,000 or 20,000В samples per second. The 6-pin plug (push-in) can be removed for maintenance purposes without releasing the individual wires.

The EtherCAT Terminals from the ELM series were developed in order to enable the high-quality measurement of common electrical signals in the industrial environment. Flexibly usable measurement modules are especially useful in laboratory and testing technology environments. Therefore the ELM370x multi-function modules feature an input circuit that can be set to over 30В different types of electrical connection via EtherCAT: from voltages of В±60В V to В±20В mV, thus supporting thermocouples and IEPE, a current of В±20В mA, a resistance measurement of 5В kО© and thus also temperature RTDs (Pt100, etc.), measuring bridges and potentiometers, and all of this with a 2- to 6-wire connection, depending on the type. Thus, most electrical measuring tasks can be solved with just a single module. There is a choice of different connection types: The ELM3704-0001 with its high-quality LEMO connectors is mainly designed for laboratory use, where sensor configurations are changed on a daily basis, but a stable and reliable plug connection is nevertheless required. The 6-pin version with push-in (ELM3704-0000/ELM3702-0000) on the other hand is ideal for industrial use where a plug is unplugged less frequently for maintenance purposes and fast wiring is much more important.

The EtherCAT Terminals from the ELM3xxx series were developed in order to enable the high-quality measurement of common electrical signals in the industrial environment. Flexibly usable measurement modules are especially useful in laboratory and testing technology environments.