知曉3BHE026866R0101 UAD154A控制器在勵(lì)磁系統(tǒng)中的使用
拾取定時(shí)器：這些定時(shí)器加載步驟1（4）拾取延遲設(shè)定值滿足所需條件時(shí)的設(shè)置。計(jì)時(shí)器開始顯示步驟1在左側(cè)，步驟4在右側(cè)結(jié)束。
?禁用定時(shí)器：這些定時(shí)器加載步驟1（4）禁用時(shí)間設(shè)定點(diǎn)滿足所需條件時(shí)的設(shè)置。計(jì)時(shí)器開始顯示步驟1在左側(cè)，步驟4在右側(cè)結(jié)束。
?系統(tǒng)穩(wěn)定定時(shí)器：該定時(shí)器持續(xù)加載系統(tǒng)穩(wěn)定時(shí)間設(shè)定點(diǎn)設(shè)置，只有在系統(tǒng)變得穩(wěn)定。
低電壓檢測定時(shí)器：該定時(shí)器加載低電壓檢測延遲檢測到低電壓時(shí)的設(shè)定點(diǎn)設(shè)置，并將開始向下計(jì)數(shù)至0。
步驟通電所需的條件步驟1通電需要以下條件。相同條件適用于步驟2至4。
?三相電壓大于低電壓電平設(shè)置。
?系統(tǒng)kVAR等于或超過步驟1拾取中的設(shè)置設(shè)定點(diǎn)。
?編程系統(tǒng)穩(wěn)定時(shí)間已過。
?編程步驟1拾取延遲已過。
?步驟1具有步驟優(yōu)先級設(shè)定點(diǎn)或所有其他步驟中設(shè)置的最高優(yōu)先級不滿足上述所有條件。
A、 1.5 Modbus內(nèi)存映射的添加以下兩個(gè)部分被添加到Mod 506的Modbus內(nèi)存映射中有關(guān)Modbus的其他信息，請參閱7.4:DNP 3.0通信本說明書提供了有關(guān)DECS-100數(shù)字系統(tǒng)操作和安裝的信息
勵(lì)磁控制系統(tǒng)。為此，提供以下信息：?一般信息和規(guī)范?控制和指標(biāo)?功能描述?安裝
?維護(hù)和故障排除：在啟用手動模式之前，必須評估手動模式勵(lì)磁水平
特色如果勵(lì)磁電流水平不適合發(fā)電機(jī)，嚴(yán)重可能會損壞發(fā)電機(jī)。
不正確的PID編號將導(dǎo)致系統(tǒng)性能差或系統(tǒng)損壞。
當(dāng)為編程目的使用操作電源時(shí)，請遵守第4節(jié)“安裝和初步設(shè)置”中規(guī)定的預(yù)防措施。
在發(fā)電機(jī)不旋轉(zhuǎn)的情況下對DECS-100進(jìn)行編程時(shí)應(yīng)拆除DECS-100端子F+和F-的連接。
在上傳設(shè)置文件之前，從DECS-100移除操作電源，從端子F+和F-斷開現(xiàn)場接線，并重新應(yīng)用操作DECS-100的電源。
PICKUP TIMERS: These timers are loaded with the STEP 1(4) PICKUP DELAY setpoint
settings when the required conditions are met. The timers are displayed beginning
with STEP 1 on the left and ending with STEP 4 on the right.
? DISABLE TIMERS: These timers are loaded with the STEP 1(4) DISABLE TIME setpoint
settings when the required conditions are met. The timers are displayed beginning
with STEP 1 on the left and ending with STEP 4 on the right.
? SYSTEM STABILIZATION TIMER: This timer is continuously loaded with the SYSTEM
STABILIZATION TIME setpoint setting and will only start to count down to 0 when the
system becomes stable.
? LOW VOLTAGE DETECT TIMER: This timer is loaded with the LOW VOLTAGE DETECT DELAY
setpoint setting when low voltage is detected and will start to count down to 0.
Conditions Required to Energize a STEP
The following conditions are required to energize STEP 1. The same conditions apply to
STEPS 2 through 4.
? Three-phase voltage is greater than the LOW VOLTAGE LEVEL setting.
? The system kvars are equal to or have exceeded the setting in STEP 1 PICKUP
setpoint.
? The programmed SYSTEM STABILIZATION TIME has elapsed.
? The programmed STEP 1 PICKUP DELAY has elapsed.
? STEP 1 has the highest priority as set in the STEP PRIORITY setpoint or all other STEPS
do not meet all of the above conditions.
A.1.5 Additions to Modbus Memory Map
The following two sections are added to the Modbus Memory Map for Mod 506. For
additional information on Modbus, refer to 7.4: DNP 3.0 Communications
This instruction manual provides information about the operation and installation of the DECS-100 Digital
Excitation Control System. To accomplish this, the following information is provided:
? General Information and Specifications
? Controls and Indicators
? Functional Description
? Installation
? Maintenance and Troubleshooting The Manual mode excitation level must be evaluated prior to enabling this
feature. If the level of excitation current is inappropriate for the generator, severe
damage to the generator may occur.
Improper PID numbers will result in poor system performance or system damage.
When applying operating power for programming purposes, observe the
precautions called out in Section 4, Installation, Preliminary Setup.
When programming the DECS-100 without the generator spinning, the
connections to DECS-100 terminals F+ and F– should be removed.
Before uploading a settings file, remove operating power from the DECS-100,
disconnect the field wiring from terminals F+ and F–, and re-apply operating
power to the DECS-100.
