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isoLynx 8B

8B isoLynx SLX300 Data Acquisition System

isoLynx 8B image

Dataforth’s 8B isoLynx® SLX300 data acquisition system builds on the proven reliability and outstanding performance of the SCM5B isoLynx® SLX200 DAQ system and miniature-sized SensorLex® 8B isolated signal conditioning modules to provide a compact, low cost solution for wide ranging, rugged industrial applications. Like the SLX200, the SLX300 ensures superior reliability, accuracy, and isolation. Through the use of pluggable modules, the SLX300 offers maximum flexibility of analog and digital channel configuration for factory automation, process control, test and measurement, machine control, and data acquisition applications. The isoLynx SLX300 uses industry standard Modbus RTU and TCP protocols, thus enabling communication with a wide range of existing third-party software tools and HMI / SCADA packages.

Fast I/O Channel-to-Channel Isolated
Using Dataforth’s SensorLex 8B analog modules and SCMD digital modules, the flexible, modular SLX300 design can be configured with up to twelve channels of isolated analog input, four channels of isolated analog output, and eight channels of isolated digital I/O (Figure 3 in pdf). The isolation rating is 1500 Vrms from input to output and from channel to channel. The system can be powered by +5 VDC or a wide range 7 to 34 VDC using the 8BPWR-2 module, and it can be either panel or DIN rail mounted. Multiple powerful, high-speed microcontrollers and high performance data converters at the heart of the system enable mix and match analog and digital I/O at sustained rates of up to 3.0 kS/s. In addition, a burst mode of operation is provided for analog input that allows sampling up to 100 kS/s on analog input channels.

Industry’s Widest I/O Selection
The isoLynx SLX300 can be configured for any application by selecting from over 89 analog I/O modules and 14 digital I/O modules. These module selections enable monitoring of common industrial signals including millivolt, volt, milliamp, amp, linearized and non-linearized thermocouple, 3- and 4-wire RTD, potentiometer, slidewire, strain gage, AC-to-True RMS output, frequency, 2-wire transmitter, and DC LVDT. Analog output modules provide isolated high-level voltage and current options. Industry standard digital I/O solid-state relay modules provide AC/DC input and output monitoring and control. Both analog and digital output channels can be configured as alarm outputs. The ability to mix and match module types on a per-channel basis ensures maximum system flexibility. Operation and storage temperature for the isoLynx SLX300, as well as for all analog and digital I/O modules used in the most extreme environments, is –40 ºC to +85 ºC; the relative humidity range is 0 to 95% noncondensing. The SLX300 system is C-UL-US Listed, CE Compliant, and designed for operation in Class I, Division 2 Hazardous Locations.

Powerful Functionality
The SLX300 has many features and special purpose functions specifically for data acquisition and control. Current sampled data from analog input channels is stored to a 192 k sample buffer. Data is available as minimum, maximum, and average readings with selectable averaging weight. A burst mode of operation allows up to 100 kS/s sampling rate on analog input channels and also provides a waveform generator function using the analog output channels. Continuous scan mode scans up to 16 input channels, and burst sampling mode can be set up with a 48 entry scan list to specify scan sequence, scan rate, and scan count. In addition to performing standard digital I/O, the eight digital I/O channels can be configured to perform seven different special functions: pulse / frequency counter, pulse / frequency counter with de-bounce, waveform measurement, time between events, frequency generator, pulse width modulation (PWM) generator, and one-shot generator. The SLX300 also allows four alarm states high, high-high, low, and low-low – to be set on the analog input and digital I/O special function channels with alarm output mapped to a user selectable analog or digital output channel.

Configurable analog and digital default output values ensure output signals are set to safe values upon system startup or when unexpected power outages or brownouts occur. System status and mode LEDs constantly display communication activity, mode of operation, and alarm status.

Flexible Communications and Configuration
The isoLynx SLX300 interfaces to a host system through a choice of communication links. RS-232 or RS-485 serial links operate from 2.4 kbps to 921.6 kbps, use true fail-safe transceivers, and have software controlled termination networks, eliminating the need for dip switches. A USB Virtual Communications Port provides a common connection to modern computers and a 10/100 Base-T Ethernet connection is also available. Up to 32 systems can be multidropped on the RS-485 serial link and up to 4 sockets are supported on Ethernet.

The Modbus RTU protocol used on serial and USB interfaces and the Modbus TCP protocol used on the Ethernet interface are open, industry standard protocols that define how devices on a network communicate with each other. This ensures that the system can be integrated seamlessly onto existing Modbus networks using common Modbus function codes.

Free configuration software is provided for quick and easy system setup (see Figure 1 and Figure 2 in pdf). Channel I/O setup, communication, default output, and other parameters are stored in non-volatile memory. A LabVIEW VI library enables fast application development using industry standard tools. The SLX300 system can be either panel or DIN rail mounted. It is also available in a rack-mounted or bench top 1U enclosure.

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Specifications

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  • Modbus RTU and TCP Support
  • 1500 Vrms Input-to-Output & Channel-to-Channel Isolation
  • 240 Vrms Field-side Protection
  • Wide I/O Selection:
    • Analog - 20 Families, 89 Models
    • Digital - 5 Families, 14 Models
  • Mix and Match Analog & Digital I/O
  • Advanced Features Including Alarms, Counters, Timers, PWMs, and More
  • –40°C to +85°C Operating Temperature
  • Supported by ReDAQ® Shape Software
  • Free Configuration Software
  • C-UL-US Listed (Class I, Division 2, Groups A, B, C, D)
  • CE Compliant
  • ATEX Compliance Pending
  • Manufactured per RoHS Directive 2002/95/EC