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System Operation
Figure 24
To select a preset PID gains bin, use the UP and DOWN arrow keys to select
Preset sub-menu item. By default, this item will be in idle state and the
present Preset bin number value will be displayed. Press the SETUP/ENTER
key to change this item's state from idle to active. Once the item is in active
state, the bin number begins flashing. Use the UP/DOWN arrow keys to
select the desired bin number. Once the desired value has been selected, press
SETUP/ENTER key to accept the new value. The PID gains associated with
the new bin will take effect immediately, and the menu item will be returned
to idle state. Press Esc key to cancel any changes or to return to Set PID
Gains main menu.
To customize PID gains, use the UP and DOWN arrow keys to select
Customize Gains sub-menu item. Press the SETUP/ENTER key to enter a
sub-menu for this item. A sample sub-menu for customizing the gains is
shown in figure below.
Kp =
Ki =
Kd =
Il =
Figure 25
Use the UP and DOWN arrow keys to select the PID gain that needs to be
modified. Once the desired item has been selected, press the SETUP/ENTER
key to change the item's state from idle to active. Once the item is in active
state, the leading digit begins flashing. Use the cursor keys to specify a
desired value. Once the desired value has been selected, press
SETUP/ENTER key to accept the new value. The new PID gain will take
effect immediately, and the menu item will be returned to idle state. Press Esc
key to cancel any changes or to return to Set PID Gains main menu.
It is highly recommended that the output be turned OFF before the gains are
customized.
Set Sensor Constants Menu
The Set Sensor Constants menu item is used to change the constants for the
previously selected sensor. These constants are used to convert feedback
signal from resistance (if sensor is a thermistor or an RTD) or voltage (if
sensor is LM335) or current (if sensor is AD590) to temperature. Please refer
A Sample Set PID Gains Sub-menu
1.000
0.005
1.000
10.000
A Sample Customize PID Gains Sub-menu
57
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