PPD512 A10-15000 DCS控制器
僅將DECS-100電源輸入端子連接到輔助電源。申請前DECS-100操作功率，遵守操作功率注意事項(xiàng)中的注意事項(xiàng)在DECS-100編程期間。
通過將使用BESTCOMS操作的PC連接到后部，執(zhí)行所有初始DECS-100設(shè)置DECS-100的通信端口，并保存所有新設(shè)置。斷開DECS-100的電源。
使用標(biāo)記標(biāo)識連接其余DECS-100導(dǎo)線。
啟動原動機(jī)/發(fā)電機(jī)，并在額定速度和負(fù)載下進(jìn)行最終調(diào)整。
初始啟動后，DECS-100不需要任何進(jìn)一步調(diào)整，除非系統(tǒng)的變化。
由于其脈寬調(diào)制（PWM）功率級，DECS-100工作功率輸入具有大量電容。DECS-100通電時會出現(xiàn)高浪涌電流當(dāng)使用“固態(tài)”電源時。為DECS-100通電以進(jìn)行電壓編程時大于120 Vac時，高涌入電流可能會損壞裝置。因此，在編程期間，DECS100工作功率應(yīng)在30至120 Vac（50/60 Hz）范圍內(nèi)。
DECS-100編程期間的操作功率考慮
如果有必要在120 Vac以上的工作電源下執(zhí)行編程，電流限制
電阻器必須連接在電源和DECS-100之間（圖4-12）。額定值為20歐姆和20瓦可用于將浪涌電流限制在安全水平。在浪涌電流（大約一個周期），將超過電阻器的額定功率。一旦涌入已經(jīng)過去，電阻器功耗水平將是最小的。如果需要，可以使用10歐姆、50瓦的電阻器相反只有在DECS-100編程過程中才能觀察到這些特殊操作注意事項(xiàng)。DECS-100由發(fā)電機(jī)輸出（并聯(lián)供電）或永久電源供電的應(yīng)用磁體發(fā)生器（PMG）在第1節(jié)“一般信息”中給出的約束范圍內(nèi)仍然有效，規(guī)格。在使用電站電源為DECS-100供電的應(yīng)用中應(yīng)通過浪涌電流降低模塊（ICRM-7）進(jìn)行保護(hù)。有關(guān)更多信息，請參閱電源輸入信息調(diào)整
所有調(diào)整均使用外部開關(guān)或通過后面板使用BESTCOMS軟件進(jìn)行通信端口。有關(guān)設(shè)置調(diào)整的更多信息，請參閱第5節(jié)和第6節(jié)BESTCOMS軟件。BESTCOMS-DECS100軟件提供DECS-100和用戶之間的通信鏈路。所有DECS-100設(shè)置均通過BESTCOMS輸入，所有計量值（更新約一次每隔一秒）通過BestCom讀取。BESTCOMS中的軟件允許用戶建立基于指定發(fā)電機(jī)和/或勵磁機(jī)的適當(dāng)PID（比例+積分+微分）參數(shù)時間常數(shù)。在BESTCOMS中，DECS-100設(shè)置可以保存在計算機(jī)文件中，并在以后用于使用相同設(shè)置配置其他裝置。
Connect only the DECS-100 power input terminals to an auxiliary power source. Before applying
DECS-100 operating power, observe the precautions noted in Operating Power Considerations
During DECS-100 Programming.
5. Perform all initial DECS-100 settings by connecting a PC operating with BESTCOMS to the rear
communication port of the DECS-100 and save all new settings.
6. Remove power from the DECS-100.
7. Connect the rest of the DECS-100 leads using the tagged identification.
8. Start the prime mover/generator and perform the final adjustments at rated speed and load.
9. After the initial startup, the DECS-100 should not require any further adjustments unless there is a
change in the system.
Operating Power Considerations During DECS-100 Programming
Due to its pulse-width modulated (PWM) power stage, the DECS-100 operating power input has a
substantial amount of capacitance. High inrush current can be experienced upon DECS-100 power-up
when a "solid" power source is used. When powering the DECS-100 for programming with voltage
greater than 120 Vac, high inrush current may damage the unit. Therefore, during programming, DECS100 operating power should be within the range of 30 to 120 Vac (50/60 Hz).
If it is necessary to perform programming with applied operating power over 120 Vac, a current-limiting
resistor must be connected between the power source and DECS-100 (Figure 4-12). A resistor rated at
20 ohms and 20 watts may be used to limit the inrush current to a safe level. During the duration of the
inrush current (about one cycle), the resistor power rating will be exceeded. Once the inrush has passed,
the resistor power dissipation level will be minimal. If desired, a 10 ohm, 50 watt resistor may be used
instead. These special operating considerations are to be observed only during DECS-100 programming.
Applications where the DECS-100 is powered from the generator output (shunt powered) or a permanent
magnet generator (PMG) are still valid within the constraints given in Section 1, General Information,
Specifications. In applications where station power is used to power the DECS-100, the DECS-100
should be protected by an Inrush Current Reduction Module (ICRM-7). See Power Supply Inputs for more
information.
ADJUSTMENTS
All adjustments are made using external switching, or with BESTCOMS software via the rear panel
communication port. See Sections 5 and 6 for more information regarding setting adjustments with
BESTCOMS software. BESTCOMS-DECS100 software provides the communication link between the DECS-100 and the user.
All DECS-100 settings are entered through BESTCOMS and all metering values (updated about once
every second) are read through BESTCOMS. Software within BESTCOMS enables the user to establish
proper PID (proportional + integral + derivative) parameters based on a specified generator and/or exciter
time constants. Within BESTCOMS, DECS-100 settings can be saved in a computer file and used later to
configure other units with the same settings.
