Installation manual

900M050U00  Athena Controls, Inc. 17-1
17. Changing the Security Access Level
17.1 Introduction
The 16C, 18C, and 25C controllers can be configured to limit the functions and
configuration menus that can be accessed using the keypad. For example, the access
level can be set to allow operators to change only the setpoint or the manual mode output
percentage.
A controller can be set to any of the access levels in the table below. The sequence of
levels in the table is from most restrictive to least restrictive. New 16C, 18C, and 25C
controllers are shipped with the access level set to cnF9cnF9 (configuration).
After you have configured the controller for your application, set the access level to the
most restrictive level appropriate for your site.
Instructions for changing the access level are in 17.2.
Instructions for disabling the keypad entirely are in 17.3.
Displayed
Abbreviation
Access
Level Description
Loc.OLoc.O
keypad lockout Highest security level; no access.
While the access level is “keypad lockout”, no controller
values can be changed, not even the setpoint. To escape,
press the key for approximately ten seconds, until
Loc.OLoc.O is displayed, then press .
SPSP
setpoint only
Setpoint or manual outputs can be adjusted; no access
to mode or menus.
When the access level is “setpoint only”, the keypad can be
used to change the setpoint or the manual mode output
percentage. However, the operator will not be able to
change the controller from normal (automatic) mode to
manual, and vice versa.
SP.PLSP.PL
setpoint plus
mode
Setpoint or manual outputs can be adjusted; mode can
be changed; no access to menus.
When the access level is “setpoint plus mode”, the keypad
can be used to change the setpoint, manual mode output
percentage, and control mode, including executing recipes,
and switching from normal (automatic) to manual, and vice
versa. (See 1.3.1 for a description of all control modes.)
USErUSEr
user
All the “setpoint plus mode” functions, and limited
access to menus.
When the access level is “user”, the keypad can be used to
do all the functions available in “setpoint plus mode”. At the
“user” level, the keypad can also be used to view and
change the values on the control menu (tuning parameters),
adjust the Autotune damping parameter, and view and
change all the ramp/soak parameters.