What is the UI input impedance of a MNL-10Rxx / -15Rxx / -20Rxx controller configured as voltage input?

Issue

Specifying engineer wants to know the input impedance of the voltage inputs on the MNL-10Rxx / 15Rxx / 20Rxx controllers.  This information is not in the data sheet.

Product Line

TAC I/A Series

Environment

MNL-10Rxx controller

MNL-15Rxx controller

MNL-20Rxx controller

Cause

Job specification requirement

Resolution

The minimum input impedance for a MNL-10Rxx /-15Rxx / -20Rxx  UI configured as a voltage type input is 20K ohms.