GE FVP110, Maintenance Manual

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Moderate Response
Manual Tuning Guideline
without changing the value of 0 in X_BST_ON_THRESHOLD[1][2] and
X_BST_OFF_THRESHOLD[1][2]. First, try to input a negative value of half that
of BOOST_VALUE [1] [2], and if necessary, increment or decrement the value by
1.
❑
If necessary, increment or decrement the value for SERVO_GAIN by 30.
Improving the Stabilization Time
1. Decrease the value for SERVO_RESET to improve the capability of tracking the
target value.
2. Verify the 10% step response and decrement the value by 3.
Improving the Response Time
❑
If you input a value in a small step of 5% or less and response is slow, increment
the value for SERVO_GAIN by 30.
❑
If necessary, increment or decrement the value for BOOST_VALUE [1] [2] and
X_BOOST_VALUE [1] [2] by 1, respectively.
Checking Hunting Operation
Input a value in a large step of approx. 80% to ensure the hunting operation does not
occur. If the hunting operation does occur, decrease the value for SERVO_GAIN to 2/3
or 1/2 of the originally entered value. (5) After tuning the control parameters, re-check
each parameter if necessary.
Moderate Response
Figure 87 Moderate Response
Improving the stabilization time
1. Decrease the value for SERVO_RESET to improve the capability of tracking the
target value.
2. Verify the 10% step response and decrement the value by 3.