Installation manual

900M050U00  Athena Controls, Inc. 10-1
10. Autotune Damping Parameter –
Recommended
10.1 Introduction
The 1ZC, 16C, 18C, and 25C controllers all support Autotune for PID control. The tunEtunE
(Autotune damping) menu contains a single parameter used to control how aggressively
the controller performs its Autotuning operation.
The choices are:
• low – provides fastest recovery, but with the possibility of overshoot
• high – provides little or no overshoot, but with slower recovery
• normal – a compromise between fast recovery and overshoot
This menu is available only if at least one output is set to PID control. In addition, for this
menu to be accessible, the security access level is set to USErUSEr, (user), CnF9CnF9
(configuration) or FACtFACt (factory).
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10.2 Configuring the Autotune Damping Parameter
Parameter Name
: Autotune Damping (39)
Name as Displayed:
dPnGdPnG
Used By:
all controllers
When Displayed:
The tune menu is displayed only if at least one output type is
PID. If the menu is displayed, then this parameter is displayed.
Choices:
LoLo low
nLnL normal
HiHi high
Default:
normal
Description:
Used to choose how aggressively the controller performs
Autotune.
Effect on Other
Parameters:
Affects the automatic tuning implemented using the parameters
in the control menu.
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The access level in all new 16C, 18C, and 25C controllers is set to CnF9CnF9 at the factory. If you cannot
see the Autotune damping menu, the access level has been changed to a more restrictive level.
Instructions for changing the access level are in Section 17.