PFSK152输入特性模件,PFSK152产品颜色
HSS模块自动调谐解调器增益
使用与技师手动操作相同的技术调整增益。自动调谐功能选择最低增益。
执行器移动到100%和0%位置。在每个位置读取LVDT二次电压。如果100%位置二次电压低于8.5电压或0%LVDT二次电压更大低于-8.5伏时，解调器增益增加。该过程重复，直到100%位置LVDT二次电压大于8.5伏或零百分比位置LVDT二次电压低于-8.5伏。然后解调器增益设置为下一个较低的值。
PFSK152输入特性模件如果最低解调器增益导致LVDT二次电压超出范围或最高解调器增益导致LVDT二次电压保持在范围（±5 VDC）以下。此错误位表示自动调谐程序无法提供最佳增益值。低于最佳增益值会产生LVDT trans former的位置反馈信息不准确，因此需要采取纠正措施。
要自动调整解调器增益：1.将解调器增益常数设置为0，<S16>=0。这启动调整过程。
2.观察输出块N+6位0上的模块状态和1。如果这些位的二进制值为0，则进行调谐进步当调谐完成时，这些的二进制值位为1。
3.如果这些位的二进制值为3，则出现错误在自动调整过程中发生。所有的盖帽都会显示出糟糕的质量。模块中的其他错误位状态输出块N+6和LVDT状态输出块
N+7表示错误。有关纠正措施，请参阅第6节行动纠正错误后，重复解调器增益调整程序。
The HSS module automatically tunes the demodulator gain
using the same techniques a technician would use to manually
tune the gain. The auto tuning function selects the lowest gain.
The actuator moves to the 100 percent and zero percent posi
tions. At each position the LVDT secondary voltage is read. If
the 100 percent position secondary voltage is less than 8.5
volts or the zero percent LVDT secondary voltage is greater
than -8.5 volts, the demodulator gain is increased. This proce
dure repeats until the 100 percent position LVDT secondary
voltage is greater than 8.5 volts or the zero percent position
LVDT secondary voltage is less than -8.5 volts. Then the
demodulator gain is set to the next lower value.
The automatic tuning error bit is set if the lowest demodulator
gain causes the LVDT secondary voltages to go out of range or
the highest demodulator gain causes the LVDT secondary volt
ages to remain below range (±5 VDC). This error bit indicates
that the automatic tuning procedure was unable to provide an
optimum gain value. A less than optimum gain value produces
inaccurate position feedback information from the LVDT trans
former, so corrective action is required.
To automatically tune the demodulator gain:
1. Set the demodulator gain constant to 0, <S16> = 0. This
initiates the tuning procedure.
2. Observe the module status on the output block N+6, bits 0
and 1. If these bits have a binary value of 0, tuning is in
progress. When tuning is complete, the binary value of these
bits is 1.
3. If these bits have a binary value of 3, then an error has
occurred during the automatic tuning procedure. All block out
puts will show bad quality. The other error bits in the module
status output block N+6 and the LVDT status output block
N+7 will indicate the error. Refer to Section 6 for corrective
action. After correcting the error, repeat the demodulator gain
tuning procedure.
