Chapter Eight: Operation in Control Mode
How To Set the Valve to HOLD Position
253
How To Set the Valve to HOLD Position
This function is used to hold the valve control signal output at its current value. This has the
effect of holding the control valve in its current position. The valve position can then be
modified in Tuning Mode by changing the valve control signal output. Once changed, the new
valve position is maintained as a fixed position.
1. Press the [
CONTROL MODE
] key.
The system responds by entering Control Mode.
2. Scroll to the
HOLD
legend with the arrow keys.
The system responds by scrolling the small arrow in the window display.
3. Press the [
ENTER
] key.
The system responds by holding the valve control signal output at its current value.
How To Set the Valve to MANUAL Position
When this feature is evoked, the valve control signal output immediately changes to the value
selected in the How To Adjust Preset, in the Operation in Tuning Mode chapter. This has the
effect of altering the valve position until it is held at the position dictated by the preset value.
Note
The rate at which the valve changes position is a function of the valve
dynamics. The valve control signal output, and the 146 window displays,
however, are changed immediately when the
MANUAL
feature is
evoked.
1. Press the [
CONTROL MODE
] key.
The system responds by entering Control Mode.
2. Scroll to the
MANUAL
legend with the arrow keys.
The system responds by scrolling the small arrow in the window display.
3. Press the [
ENTER
] key.
The system responds by immediately changing the valve control signal output to the value
entered in the preset function (refer to How To Adjust Preset, in the Operation in Tuning Mode
chapter).
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