Dataforth has just added two modules to the MAQ20 system, increasing its capabilities for a range of industrial applications. The High Density Voltage Discrete Input Modules (MAQ20-DIV20 and MAQ20-DIVC20) are two versions of the same module, offering 20 discrete input channels that interface to 10-32VDC signals. The MAQ20-DIVC20 module has a +24VDC compliance voltage for interfacing to relay contacts, solid state switches, or other devices that require an excitation. Discrete input states can be read individually or as a block and logic polarity can be user defined as standard or inverted. Field inputs have switching times and pulses as narrow as 200µs can be measured. Field input connections are made through spring cage terminal blocks. Input-to-bus isolation is 1500Vrms in the MAQ20-DIV20/MAQ20-DIVC20 modules, and each individual channel is protected up to 150Vrms continuous overload in case of inadvertent wiring errors. The second module is the High Density Isolated Discrete Output Module (MAQ20-DODC20SK), which has 20 isolated discrete output channels that can switch up to 60VDC signals and sink up to 3A of current. Channels can be switched individually or in blocks, and user configurable default output states, set upon power-up or module reset, ensure failsafe operation for critical applications. Logic polarity can be user defined as standard or inverted. Output-to-bus isolation is a1500Vrms in the MAQ20-DODC20SK module, and each individual channel is protected up to 60VDC continuous overload in case of inadvertent wiring errors. In addition, this module has 150Vrms channel-to-channel isolation, providing the ability to control equipment with or without common signal grounds or different pieces of equipment with multiple reference potentials. Two other MAQ20 modules, the Isolated Process Voltage & Process Current Analog Input Modules (MAQ20-ISOMV/-ISOV/-ISOI) with channel-to-channel isolation, and the Discrete Relay Output Module (MAQ20-DORLY20) with 20 channels of relay output are in development and will be released in the near future. Other MAQ20 modules include communications modules; analog input voltage, current, thermocouple, RTD and potentiometer, strain gage, and frequency modules; analog output voltage and current modules, and discrete input/output modules.
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