PROSOFT MVI56E-MNETXT 可編程控制器
油位必須達(dá)到油視鏡上的標(biāo)記。4.將補(bǔ)償調(diào)整指針設(shè)置在指針刻度的中點(diǎn)。5.如果在發(fā)動(dòng)機(jī)上測(cè)試調(diào)速器，則根據(jù)制造商的說明啟動(dòng)原動(dòng)機(jī)。運(yùn)行調(diào)速器，直到達(dá)到工作溫度。6.檢查調(diào)速器在正常工作速度下的油壓是否為110–120 psi/758–827 kPa（UG-10為135–150 psi/931–1034 kPa）。7.關(guān)閉針閥（148），并將其打開至剛好引起小的擺動(dòng)。使用十字螺絲刀。如果必須使用普通螺絲刀，請(qǐng)確保僅使用針閥的淺槽，以避免損壞孔內(nèi)的螺紋和針閥。螺紋或針閥損壞會(huì)導(dǎo)致調(diào)速器擺動(dòng)。讓原動(dòng)機(jī)擺動(dòng)約30秒，以排出調(diào)速器油道中的滯留空氣。8.關(guān)閉針閥，再打開半圈。如果調(diào)速器繼續(xù)擺動(dòng)，重復(fù)步驟7。
關(guān)閉發(fā)動(dòng)機(jī)。拆下壓力表，然后安裝一個(gè)1/8“內(nèi)六角管塞。在螺紋上涂抹管道密封劑，并將管塞擰緊至90 lb in（10 Nxm）。使用下垂部件進(jìn)行UG操縱桿測(cè)試（參考圖6-1）只有當(dāng)被控制的原動(dòng)機(jī)在單個(gè)裝置配置中運(yùn)行時(shí)，才能進(jìn)行速度停止操縱桿的調(diào)整以及下垂操縱桿和凸輪調(diào)整的最終檢查。此測(cè)試需要加載原動(dòng)機(jī)。調(diào)整調(diào)速器，使其使用盡可能小的下垂，同時(shí)獲得令人滿意的控制。在難以實(shí)現(xiàn)最大負(fù)載的并聯(lián)發(fā)電機(jī)組等應(yīng)用中，觀察調(diào)速器行為可能是檢查下垂運(yùn)行的最佳方式。在裝配過程中，在下垂桿和凸輪上預(yù)設(shè)尺寸“C”，可為觀測(cè)期內(nèi)的原動(dòng)機(jī)操作提供合理準(zhǔn)確的下垂設(shè)置。如果在一個(gè)觀察期內(nèi)，該機(jī)組比其他機(jī)組承受更大的負(fù)載，則其下垂設(shè)置低于其他機(jī)組，應(yīng)略微增加以更好地分擔(dān)負(fù)載。1.拆下針閥塞（146）對(duì)面調(diào)速器底座上的管塞（9），并連接一個(gè)0–200 psi（0–1400 kPa）的壓力表。2.將調(diào)速器安裝在試驗(yàn)臺(tái)上或發(fā)動(dòng)機(jī)墊上。參見第2章。3.給調(diào)速器加油。
Run the governor until it is at operating temperature. 6. Check that the governor has 110–120 psi/758–827 kPa (135–150 psi/931– 1034 kPa for UG-10) oil pressure at normal operating speed. 7. Close the needle valve (148) and open it just enough to cause a small hunt. Use a Phillips screwdriver. If a plain screwdriver must be used, make sure to use only the shallow slot of the needle valve to avoid damage to the threads inside the bore and to the needle valve. Damage to the threads or to the needle valve will cause the governor to hunt. Let the prime mover hunt for approximately 30 seconds to bleed trapped air from the governor oil passages. 8. Close the needle valve and open it again one-half turn. If the governor continues to hunt, repeat step 7.
If, over an observation period, the unit takes greater load than the other units, its droop setting is lower than the other units and should be increased slightly for better load sharing. 1. Remove pipe plug (9) in the base of the governor on the opposite side of the needle valve plug (146) and attach a 0–200 psi (0–1400 kPa) pressure gauge. 2. Install the governor on a test stand or on the engine pad. See Chapter 2. 3. Fill the governor with oil. See Chapter 2, Oil Supply. The oil level must be to the mark on the oil sight glass. 4. Set the compensation adjusting pointer at mid-point on the pointer scale. 5. If the governor is tested on the engine, start the prime mover according to the instructions from the manufacturer.
Shut down the engine. Remove the pressure gauge and install a 1/8” socket pipe plug. Apply a pipe sealer to the threads and torque pipe plug down to 90 lb-in (10 Nxm). UG Lever Test with Droop Parts (Reference Figure 6-1) Adjustment of the speed stop levers and final check of droop lever and cam adjustment must be made only while the prime mover being controlled is operating in a single unit configuration. This test requires loading of the prime mover. Adjust the governor to use as little droop as possible yet obtain satisfactory control. On applications such as paralleled generator sets where maximum loading is difficult, observation of governor behavior may be the best way of checking droop operation. Presetting of dimension “C” on the droop lever and cam during assembly gives a reasonably accurate droop setting for prime mover operation during the observation period.