Configuring Analog Output

ION 7500 / ION 7600 User’s Guide

 

 

Configuring Analog Output

An ION meter’s analog outputs act as transducers. The meter measures power and energy, and then sends that information via the analog outputs to a remote terminal unit (RTU). The analog outputs issue industry standard 0 to 20 mA current signals.

Analog Output Module

Analog outputs allow you to control external devices by delivering a specific current or voltage that is proportional to your source point. The Analog Output module takes an input value and scales it to the appropriate values for output to an analog hardware port. It also provides the scaled value as an output register that can be accessed by other modules.

Ordering options on some ION meters provide analog outputs that can deliver a continuous dc signal. The accuracy of analog outputs for ION meters is ±0.3% of full scale. The following varieties are available—be sure to check the device label to determine your option:

Analog Output Option

Maximum Load

 

 

-1 to 1 mA (scalable to 0 to 1 mA)

10

 

 

0 to 1 mA

10

 

 

0 to 20 mA (scalable to 4 - 20 mA)

500

 

 

-20 mA to 20 mA

500

 

 

An ION 7300 Series TRAN meter with an analog output card cannot be ordered with a remote display (RMD).

Analog Output Module Setup Registers

An ION Analog Output software module corresponds to each hardware output port. This module takes a numeric value and scales it for output to an analog hardware port, allowing you to control external devices by delivering a specific current or voltage. The register settings let you determine the value that appears in the output register when the lowest and highest possible values from the hardware are applied, and determine the hardware port that the module will control.

To learn more about the Analog Output module scaling, refer to the section “Setting Analog Zero and Full Scale Values” on page 227.

Setup Register

Description

 

 

Zero Scale

Should be set to the value on the Source input that will create the minimum

possible output on the analog hardware port

 

 

 

Full Scale

Should be set to the value on the Source input that will create the highest

possible output on the analog hardware port

 

 

 

Port

Defines the hardware port where the output appears

 

 

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Digital and Analog I/O Technical Note

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Multi-Tech Systems 7600, 7500 manual Configuring Analog Output, Analog Output Module Setup Registers

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