PFSK152輸入特性模件,PFSK152產(chǎn)品顏色
HSS模塊自動調(diào)諧解調(diào)器增益
使用與技師手動操作相同的技術(shù)調(diào)整增益。自動調(diào)諧功能選擇最低增益。
執(zhí)行器移動到100%和0%位置。在每個位置讀取LVDT二次電壓。如果100%位置二次電壓低于8.5電壓或0%LVDT二次電壓更大低于-8.5伏時，解調(diào)器增益增加。該過程重復(fù)，直到100%位置LVDT二次電壓大于8.5伏或零百分比位置LVDT二次電壓低于-8.5伏。然后解調(diào)器增益設(shè)置為下一個較低的值。
PFSK152輸入特性模件如果最低解調(diào)器增益導(dǎo)致LVDT二次電壓超出范圍或最高解調(diào)器增益導(dǎo)致LVDT二次電壓保持在范圍（±5 VDC）以下。此錯誤位表示自動調(diào)諧程序無法提供最佳增益值。低于最佳增益值會產(chǎn)生LVDT trans former的位置反饋信息不準(zhǔn)確，因此需要采取糾正措施。
要自動調(diào)整解調(diào)器增益：1.將解調(diào)器增益常數(shù)設(shè)置為0，<S16>=0。這啟動調(diào)整過程。
2.觀察輸出塊N+6位0上的模塊狀態(tài)和1。如果這些位的二進制值為0，則進行調(diào)諧進步當(dāng)調(diào)諧完成時，這些的二進制值位為1。
3.如果這些位的二進制值為3，則出現(xiàn)錯誤在自動調(diào)整過程中發(fā)生。所有的蓋帽都會顯示出糟糕的質(zhì)量。模塊中的其他錯誤位狀態(tài)輸出塊N+6和LVDT狀態(tài)輸出塊
N+7表示錯誤。有關(guān)糾正措施，請參閱第6節(jié)行動糾正錯誤后，重復(fù)解調(diào)器增益調(diào)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.
