Installation manual

900M050U00  Athena Controls, Inc. 2-1

2. User Interface

2.1 Overview

The panel-mounted 16C, 18C, and 25C are all equipped with a bright two-line LED

display that is easy to read over wide viewing angles.

During normal operations the

process value is always on display. The setpoint can also be displayed at all times. If

you prefer, the setpoint can be “blanked”, that is, it can be turned off after a configurable

time period. Pressing any key displays the setpoint again. Information about the other

information that can be displayed is in 2.2.

The 16C, 18C, and 25C keypad consists of four keys:

mode/enter – used to access the displays used to change the mode or

security access level, as well as to write values to the controller’s database and

step through items within a configuration menu

menu access – used to access the menu system; within the menu system

it is used to move from menu to menu

up and down – used to change numeric values and to scroll through

lists of configuration choices

Instructions for using these keys to operate the controller are in 2.4.

The front panel of the 16C, 18C, and 25C controllers includes LEDs that are used for

alarm annunciation, as well as to signal which controller functions are active. See 2.3 for

more information about these LEDs.

The compact 1ZC does not include a display. It does have LEDs to signal which functions are active.

The 1ZC is designed to be mounted on a DIN rail in a cabinet. It is configured and its process value is

read using a personal computer. See the Multi-Comm User’s Guide and Using the MODBUS Protocol

with Athena Series C Controllers for information about reading values from and writing values to the 1ZC

controllers.