OKYM175W22工控自动化备件,OKYM175W22使用方法教程
秒是快速循环时间，如果涡轮机在线。
3.转到S3中指定的块地址。设置校准命令位为1。这会将HSS模块置于校准状态模式
4.在阀门处于0%位置时读取S8的值（关闭）。
5.如果S8的值在0和-8.5 VDC之间，则拆下HSS模块并增加解调器增益（双列直插式开关S2）到下一个更高的值。例如，如果增益为2（8极闭合），将增益更改为5.5（闭合极7，打开极8）。桌子3-2列出了与每个双列直插式开关极相关的增益。将HSS模块插入模块安装单元。
OKYM175W22工控自动化备件7、继续读取S8并增加解调器增益直到S8显示-8.5 VDC至-10.0 VDC的值。记录日期、时间、解调器增益和人员姓名表B-1中提供的空间中的解调器增益。每次解调器增益增加时更新信息已调谐。8.转到S5中规定的块地址。将线性可变差分变压器（LVDT）零位设置为1。
9.转到S4中指定的块地址。设置通过/保持选择位至1。
10.监控输出块（n+1），直到其值为1。这表明执行器处于零位。
11、对伺服阀和LVDT位置，将致动器调整至其机械零位位置
对于最大LVDT线性，LVDT零点应发生在执行器中行程位置。当S4处于GO模式下，执行器斜坡至LVDT零位并保持点（LVDT二次电压相等）。当致动器保持在LVDT零点时，致动器上的机械零点LVDT变压器可以调整，直到致动器处于其中间行驶位置。
12.LVDT归零后，关闭零检查模式（S5=0）。HSS模块在以下位置驱动执行器至100%位置：
选定的冲程时间（S6）。当致动器紧靠
100%行程结束，功能代码150在规范S9中100%存储LVDT差分电压。
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.
