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Differences between IAC 400 and IAC 420 controllers

Issue

What are the differences between the IAC 400 and the IAC 420 controllers?

Product Line

Field Devices, Other, Satchwell MicroNet, Satchwell Sigma

 

Environment

  • IAC 400
  • IAC 420

Cause

The IAC 400 controller is obsolete and its replacement is the IAC420.

Resolution

Hardware differences;

The IAC 400 has 3 Temperature, 2 Analogue and 1 Digital input, where as the IAC 420 has 6 Universal inputs.

Communications differences;

The IAC 400 controller uses terminal 3 to earth the communications cable screening, on the IAC 420 the screening must be connected to a good earth and not terminal 3.

Tables and offsets;

Because the IAC 420 has different inputs that tables and offsets are changed, please review IAC Controllers - Tables and Offsets.

IAC 400 Wiring details. For the full data sheet please click HERE.

 

IAC 420 Wiring details. For the full data sheet please click HERE.

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