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The IAC 400 controller is obsolete and its replacement is the IAC420.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