INTRODUCTION
I-E96-315B
4 - 1
SECTION 4 - CALIBRATION
INTRODUCTION
This section covers the module calibration procedure, analog
control loop tuning theory and the controller gain tuning pro-
cedure. Completing the steps in this section ensures accurate
positioning of the turbine throttle valve and the best possible
frequency response. Complete the steps in this section before
placing the HSS in operation.
INITIAL CALIBRATION
Before beginning the module calibration procedure:
1. Obtain the following documents and have them on hand:
a. The
Function Code Application Manual
b. The instruction manual for the operator interface (i.e.,
PCV, OIS, CTM).
2. Verify that the following conditions exist:
a. The valve (for turbine hydraulic system) must be in the
controlling position and functioning properly.
b. The controller or processor module has function code
150 in its configuration.
c.
The HSS controller gain (switch 1) is set to 1 (pole 8 is
closed).
d. The HSS demodulator gain (switch 6) is set to 2 (pole 8
is closed).
e.
The turbine should be off-line.
f.
If the turbine is on-line, there must be other controlling
valves operating to compensate for position changes of the
valve in calibration.
To calibrate the HSS:
1. 1.
Verify that the block address specified in S7 contains
the proper number of calibration cycles (from 1 to 8).
2. Verify that the block address specified in S6 contains the
desired calibration cycle time. Values are 1 (30 seconds), 2 (60
seconds), 3 (35 minutes), 4 (70 minutes). 30 and 60 seconds
