SCMHVAS

High Voltage Attenuator System for Analog Signal Conditioning

Note: Click here for first generation SCMVAS modules

The SCMHVAS (Signal Conditioning Modular High Voltage Attenuator System) is an analog signal conditioning system designed to safely monitor and accurately measure voltage potentials up to 1414VAC (4000V peak-to-peak). These high-level voltages are typically found in industrial applications such as induction heaters, electric-motor drive controllers, or battery applications. The system reduces the input signal to a level suitable for interface to data acquisition systems, while at the same time providing various filter characteristics and 1500Vrms isolation.


For each channel of analog input, an attenuator module, SCMHVAS-Mxxxx, pre-conditions the signal which is then filtered, isolated, and converted to a high-level voltage output using an SCM5B30-07 or SCM5B40-07 module. The SCM5B40-07 module with a 10kHz bandwidth is recommended for common 50/60Hz signals low in harmonics where the user is interested in measuring only AC voltage. The SCM5B30-07 module is used for low frequency AC signals below 4Hz. The attenuator and signal conditioning modules have excellent stability over time and do not require re-calibration. Overall system accuracy is ±0.06%.


Input signal connections to the SCMHVAS-Mxxxx attenuator module are made using integrated terminal blocks for robust system assembly. For safety purposes, the terminal blocks are inside the shell and can only be accessed from the top and there are no other exposed high-voltage points on the SCMHVAS-Mxxxx series modules, SCM5B30-07 or SCM5B40-07 module, or the mounting backpanel.


The SCMHVAS system has two specially designed backpanels for mounting the attenuator and signal conditioning modules. The SCMVAS-PB8 high density, 8- channel backpanel (Figures 2, 3 can be panel mounted or DIN rail mounted and provides the conditioned output signal on screw terminal blocks. Jumpers are provided on each channel to optionally connect or isolate each module’s I/O Common from other channel’s I/O Common and/or Power Common. The SCMVAS-PB16 (Figures 4, 5) has 16 channels of analog I/O simultaneously available to high speed data acquisition (ADC) boards through a 26-conductor ribbon cable. Refer to the SCMPB01 Data Sheet and Application Note AN502 for recommended ground connections and host system interfaces. Both the SCMVAS-PB8 and SCMVAS-PB16 backpanels can be mounted on the SCMXRK-002 19-inch metal rack. The SCMVAS-PB8 and SCMVAS-PB16 backpanels are forward compatible and can accommodate both, the original SCMVAS-Mxxx modules and the SCMHVAS-Mxxxx modules.

Documents

3D CAD/STEP Files 3D CAD Models
Product Availability
Usually stock to 2-3 weeks

Dimensions & Accessories

Features

  • Accepts High Voltage Signals up to 1414VAC (4000V Peak-to-Peak)
  • 5 or 10 Volt Output for A/D Systems
  • 1500Vrms Transformer Isolation
  • True 3-Way Isolation
  • Up to 160dB CMR
  • ± 0.06% Accuracy
  • Panel or DIN Rail Mounting Options
  • CSA Certified (pending)
  • CE Compliant (pending)
  • ATEX Compliant (pending)

Block Diagram

NOTE: Data in below table can be filtered. Please use the to make your selection. If you have any questions about the displayed data, please contact Customer Service at +1 520-741-1404 or sales@dataforth.com

FAQ

Is the SCM5B40-06 sensitive to being soldered into a board? Would soldering it damage the part?
We do not recommend soldering the SCM5B pins to a board as it could potentially damage the module. Soldering the pins would also void the warranty. Many sockets are available which accept the mounting pins. TE Connectivity / AMP part number 50865-5 is an example of these sockets and any equivalent part will work as well.

Custom Modules

Below is a list of existing custom modules. If you don't see a module matching your target specifications, contact Customer Service and Application Support to discuss design guidelines and design feasibility. Customer Service and Application Support can be reached at sales@dataforth.com or +1-800-444-7644.
NOTE: Data in below table can be filtered. Please use the to make your selection. If you have any questions about the displayed data, please contact Customer Service at +1 520-741-1404 or sales@dataforth.com
* ... Status Codes: PR = Production, PT = Prototypes, QU = Quoted

We want your feedback!

We are interested in your feedback regarding our products. Please let us know what you think and if you have any questions regarding the SCM5B32 and how this product could apply to your application. Your feedback is very valuable to us and very much appreciated.

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