BLACK BOX EME1C1-005 AlertWerks 4-20mAmp Signal Converter User Manual

BLACK BOX EME1C1-005 AlertWerks 4-20mAmp Signal Converter

INTRODUCTION AND SPECIFICATIONS

• The AlertWerks 4-20 mAmp signal converter is used to integrate the gateway with a 4-20 mAmp transmitter. 4-20 mAmp technology is used to communicate analog signals over long distances where electrical interference is a problem. This solution is often used in the process control industry to collect the analog values from a wide array of remote sensors.
• Current signals are much less susceptible to noise than voltage signals. A voltage signal can be converted to current and then broadcast over a long distance before it is converted back to voltage and read by the unit. 4-20 mA transmitters are common in the industry for use with high quality sensors. With the AlertWerks 4-20 mAmp converter, these sensors can now be integrated into the gateway, enhancing their value with the addition of graphing, web interface, email interface, thresholds, and limits.
• The accuracy of our 4-20mA converters is 2%.
• The resolution of our 4-20mA converters is 0.1mA.
• You can use these figures in conjunction with your sensor’s accuracy to find the overall precision of your readings.
• You can also calibrate the AlertWerks 4-20mAmp converter.
• One popular OID for the 4-20 mAmp Converters is the current reading. For a 4-20 mAmp Converter plugged into RJ-45#1 that OID is: .1.3.6.1.4.1.3854.1.2.2.1.17.1.3.0

SPECIFICATION AND FEATURES

• LED INDICATORS ON CONVERTER SHOW CONNECTION TO UNIT
• THE CONVERTER CONNECTS TO THE GATEWAY USING STANDARD CATx CABLE.
• POWER SOURCE: POWERED BY THE UNIT. NO ADDITIONAL POWER NEEDED.
• THE GATEWAY AUTO DETECTS THE PRESENCE OF THE 4-20MA CONVERTER.
• FULL AUTOSENSE INCLUDING DISCONNECT ALARM

If you need any further information or help with using your unit, contact us at techsupport@blackbox.com.

CONFIGURATION

CONFIGURATING THE 4-20MA CONVERTER

• Plug the sensor into one of the RJ-45 ports on the gateway.
• Point your browser to the IP address of the unit (default, 192.168.0.100) and then log in as the administrator using your administrator password (default is public). You will then be taken to the summary page.
• Select the sensor™s tab from the summary page. The layout of the next page will vary depending on your unit, so refer to your unit’s manual for more information.
• Set up the sensor thresholds. The low critical, low warnings, normal, high warnings, and high critical values can be set from this page.

Next, we will cover the settings that are specific to your sensor.

• Current Reading:
  The percentage or absolute value of the 4-20mAmp Converter is displayed in this field. This is a read-only field. This value can be polled via SNMP, and the data can be used for graphing. The value range is set by the base and max scale fields in the Custom 4-20mAmp Converter Settings.

• Status:
  The current reading is compared to the thresholds of Critical High, Warning High, Critical Low, and Warning Low that the user has set. From this, the status is then formed, and emails or traps are sent if necessary.

• Critical High, Warning High, Warning Low, and Critical Low:
  These thresholds should be re-entered every time there is a change in the type of scale (whether an absolute value or a percentage value is used).

• Display Units:
  This field should be entered with an appropriate unit of the measured entity. For example, this field might be entered with Pounds or Lbs when the input of the 4-20mA Converter is a measured pressure, or mA for an absolute value of measured current.

• Type of scale:
  This field is used to select whether to display the current reading as an absolute or a percentage value.

• Max Scale of Sensor in mA:
  This field should be entered with the maximum value of the mAmp that is input to the 4-20mAmp Converter. For most cases, the value of this field should be

• Base Scale of Sensor in mA:
  This field should be entered with the minimum value of the mAmp that is input to the 4-20mAmp Converter. For most cases, the value of this field should be

• How Many Percent or How Many Unit (Max Scale):
  The field name is changed accordingly to the selected type of scale (absolute value or percentage). When the type of scale is set to Absolute, this field should be set to the maximum absolute value of a measured entity which is input to the 4-20mAmp Converter. When the type of scale is set to Percent, this field should be set to 100 percent.

• How Many Percent or How Many Unit (Base Scale):
  The field name is changed accordingly to the selected type of scale (absolute value or percentage). When the type of scale is set to Absolute, this field should be set to the minimum absolute value of a measured entity which is input to the 4-20mAmp Converter. When the type of scale is set to Percent, this field should be set to 0 percent.
  Example (assuming the 4-20 mAmp Converter is input from a pressure sensor which output 4-20 mAmp for pressure in range of 50-300 pounds): Enter “Display Unit” as “Lbs” for pound. Select “Type of Scale” as “Absolute.” Other fields should be configured as indicated in Table 2-1:

TABLE 2-1 SETTINGS AND VALUES

An illustration of a typical 4-20mAmp setting appears below:

READGLUINLEATORY INFORMATION

FCC STATEMENT

This equipment has been tested and found to comply with the regulations for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with this Quick Installation Guide, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case, the user will be required to correct the interference at his/her own expense.

CE STATEMENT
This is a Class B product in a domestic environment, this product may cause radio interference, in which case the user may be required to take adequate measures.

ROHS
This product is RoHS compliant

NOM STATEMENT

DISCLAIMER
Black Box Corporation shall not be liable for damages of any kind, including, but not limited to, punitive, consequential or cost of cover damages, resulting from any errors in the product information or specifications set forth in this document and Black Box Corporation may revise this document at any time without notice.

TRADEMARKS USED IN THIS MANUAL
Black Box and the Black Box logo type and mark are registered trademarks of BB Technologies, Inc. Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners

© COPYRIGHT 2022. BLACK BOX CORPORATION. ALL RIGHTS RESERVED. EN_IOT_MANUAL_EME1C1-005_REV1_2210.PDF
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References

• Global IT Products & Network Solutions Provider | Black Box

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