OKYM175W22工控自動化備件,OKYM175W22使用方法教程
秒是快速循環(huán)時間，如果渦輪機在線。
3.轉到S3中指定的塊地址。設置校準命令位為1。這會將HSS模塊置于校準狀態(tài)模式
4.在閥門處于0%位置時讀取S8的值（關閉）。
5.如果S8的值在0和-8.5 VDC之間，則拆下HSS模塊并增加解調器增益（雙列直插式開關S2）到下一個更高的值。例如，如果增益為2（8極閉合），將增益更改為5.5（閉合極7，打開極8）。桌子3-2列出了與每個雙列直插式開關極相關的增益。將HSS模塊插入模塊安裝單元。
OKYM175W22工控自動化備件7、繼續(xù)讀取S8并增加解調器增益直到S8顯示-8.5 VDC至-10.0 VDC的值。記錄日期、時間、解調器增益和人員姓名表B-1中提供的空間中的解調器增益。每次解調器增益增加時更新信息已調諧。8.轉到S5中規(guī)定的塊地址。將線性可變差分變壓器（LVDT）零位設置為1。
9.轉到S4中指定的塊地址。設置通過/保持選擇位至1。
10.監(jiān)控輸出塊（n+1），直到其值為1。這表明執(zhí)行器處于零位。
11、對伺服閥和LVDT位置，將致動器調整至其機械零位位置
對于最大LVDT線性，LVDT零點應發(fā)生在執(zhí)行器中行程位置。當S4處于GO模式下，執(zhí)行器斜坡至LVDT零位并保持點（LVDT二次電壓相等）。當致動器保持在LVDT零點時，致動器上的機械零點LVDT變壓器可以調整，直到致動器處于其中間行駛位置。
12.LVDT歸零后，關閉零檢查模式（S5=0）。HSS模塊在以下位置驅動執(zhí)行器至100%位置：
選定的沖程時間（S6）。當致動器緊靠
100%行程結束，功能代碼150在規(guī)范S9中100%存儲LVDT差分電壓。
seconds are fast cycle times and are not recommended if the
turbine is on-line.
3. Go to the block address specified in S3. Set the calibration
command bit to 1. This places the HSS module in the calibrate
mode.
4. Read the value of S8 with the valve in the 0% position
(closed).
5. If the value of S8 is between 0 and -8.5 VDC, remove the
HSS module and increase the demodulator gain (dipswitch S2)
to the next higher value. For example, if the gain is 2 (pole 8
closed), change the gain to 5.5 (close pole 7, open pole 8). Table
3-2 lists the gain associated with each dipswitch pole.
6. Insert the HSS module in the module mounting unit.
7. Continue reading S8 and increase the demodulator gain
until S8 displays a value of -8.5 VDC to -10.0 VDC. Record the
date, time, demodulator gain and names of personnel tuning
the demodulator gain in the space provided in Table B-1.
Update the information every time the demodulator gain is
tuned.
8. Go to the block address specified in S5. Set the linear vari
able differential transformer (LVDT) null bit to 1.
9. Go to the block address specified in S4. Set the GO/HOLD
select bit to 1.
10. Monitor the output block (n+1) until it has a value of 1.
This indicates the actuator is at the null point.
11. Make the necessary adjustments to the servo valve and the
LVDT position to adjust the actuator to its mechanical null
position.
For maximum LVDT linearity, the LVDT null point should
occur at the actuators midtravel position. When S4 is in the
GO mode, the actuator ramps to and holds at the LVDT null
point (LVDT secondaries have equal voltages). While the actua
tor is held at the LVDT null point, the mechanical zero on the
LVDT transformer can be adjusted until the actuator is at its
mid-travel position.
12. After LVDT zeroing, turn the null check mode off (S5=0).
The HSS module drives the actuator to the 100% position at
the selected stroke time (S6). While the actuator is held against
the 100% end of travel, function code 150 stores the LVDT dif
ferential voltage at 100% in specification S9.
