REF615C_C控制觸摸屏
來(lái)自C相和A相的電壓信號(hào)
ADC使用發(fā)電機(jī)的(VC-A)計(jì)算發(fā)電機(jī)跨相電壓的均方根值類(lèi)似地,來(lái)自發(fā)電機(jī)相C和B(VC-B)的電壓信號(hào)由ADC用于計(jì)算C相和B相發(fā)電機(jī)電壓的均方根值。發(fā)電機(jī)B相的均方根值
微處理器根據(jù)C相至A相信號(hào)(VC-A)計(jì)算A相電壓(VB-A),以及相位C到相位B(VC-B)信號(hào)。
此外,發(fā)電機(jī)C相至A相(VC-A)信號(hào)應(yīng)用于濾波過(guò)零檢測(cè)器環(huán)行該信號(hào)應(yīng)用于微處理器,用于計(jì)算發(fā)電機(jī)頻率。B相線(xiàn)路電流
B相線(xiàn)路電流(IB)信號(hào)通過(guò)客戶(hù)提供的電流互感器(CT)產(chǎn)生并通過(guò)端子CT1和CT2進(jìn)行監(jiān)控。根據(jù)所選選項(xiàng),電流可達(dá)1安培(型號(hào)xx1)或5安培(型號(hào)xx5)rms可在這些端子上進(jìn)行監(jiān)測(cè)。這個(gè)在這些端子處監(jiān)測(cè)的電流由內(nèi)部電流互感器進(jìn)行縮放和調(diào)節(jié),以及ADC使用的有源電路。應(yīng)用于ADC的信號(hào)用于計(jì)算B相線(xiàn)路電流。此外,B相線(xiàn)路電流與C相至A相發(fā)電機(jī)電壓之間的相位角為計(jì)算用于下垂和無(wú)功/功率因數(shù)運(yùn)行。
附件輸入(輔助調(diào)整)該輸入允許通過(guò)應(yīng)用正或來(lái)調(diào)整DECS-100調(diào)節(jié)設(shè)定點(diǎn)端子A和B之間的負(fù)直流電壓。
施加到端子A的正電壓
端子B將導(dǎo)致激活模式設(shè)定點(diǎn)增加。可將-3至+3 Vdc的電壓施加至:這個(gè)輸入。該電路在直流電源上感應(yīng)出1000歐姆的負(fù)載?!? Vdc信號(hào)的應(yīng)用對(duì)應(yīng)于設(shè)定點(diǎn)的±30%變化。
電壓對(duì)調(diào)節(jié)器磁場(chǎng)輸出端子F+和F-上的電壓(VFIELD)進(jìn)行監(jiān)控、定標(biāo)和在施加到ADC之前進(jìn)行調(diào)節(jié)。該信號(hào)用于計(jì)算磁場(chǎng)電壓的直流值用于系統(tǒng)保護(hù)。
電流通過(guò)主功率輸出開(kāi)關(guān)的電流(IFIELD)被轉(zhuǎn)換成比例電壓電平。這電壓信號(hào)在被施加到ADC的輸入之前被縮放和調(diào)節(jié)。結(jié)果被使用計(jì)算磁場(chǎng)電流的直流值,用于手動(dòng)操作模式和保護(hù)系統(tǒng)。
接觸輸入電路由內(nèi)部13 Vdc電源供電的五個(gè)觸點(diǎn)輸入電路從用戶(hù)提供的隔離干式觸點(diǎn)提供輸入控制。
提升閉合端子6U和7之間的觸點(diǎn)會(huì)導(dǎo)致有效工作設(shè)定值增加。這只要觸點(diǎn)閉合,功能就會(huì)激活。
降低閉合端子6D和7之間的觸點(diǎn)會(huì)導(dǎo)致有效工作設(shè)定值降低。這只要觸點(diǎn)閉合,功能就會(huì)激活。
The voltage signal from phase C and A
(VC-A) of the generator is used by the ADC to calculate the rms value of generator voltage across phases
C and A. Likewise, the voltage signal from phase C and B (VC-B) of the generator is used by the ADC to
calculate the rms value of generator voltage across phases C and B. The rms value of generator phase B
to phase A voltage (VB-A) is calculated by the microprocessor from the phase C to phase A signal (VC-A)and
the phase C to phase B (VC-B) signal.
Additionally, the generator phase C to phase A (VC-A) signal is applied to a filtered, zero-cross detector
circuit. This signal is applied to the microprocessor and is used to calculate generator frequency.
B-Phase Line Current
The phase B line current (IB) signal is developed through a customer supplied current transformer (CT)
and monitored through terminals CT1 and CT2. Depending on the option selected, current up to 1 ampere
(style number xx1) or 5 amperes (style number xx5) rms may be monitored at these terminals. The
current monitored at these terminals is scaled and conditioned by an internal current transformer and
active circuitry for use by the ADC. The signal applied to the ADC is used to calculate the rms value of
phase B line current.
Additionally, the phase angle between phase B line current and phase C to phase A generator voltage is
calculated for use during droop and var/power factor operation.
Accessory Input (Auxiliary Adjust)
This input allows adjustment of the DECS-100 regulation setpoint by the application of a positive or
negative dc voltage across terminals A and B. Positive voltage applied to terminal A with respect to
terminal B will cause the active mode setpoint to increase. Voltage from –3 to +3 Vdc may be applied to
this input. The circuit induces a 1,000-ohm burden on the dc source. The Application of a ±3 Vdc signal
corresponds to a ±30 percent change in setpoint.
Field Voltage
Voltage (VFIELD) across the regulator field output terminals, F+ and F–, is monitored, scaled, and
conditioned before being applied to the ADC. This signal is used to calculate the dc value of field voltage
for use in system protection.
Field Current
Current (IFIELD) through the main power output switch is converted to a proportional voltage level. This
voltage signal is scaled and conditioned before being applied to the input of the ADC. The result is used
to calculate the dc value of field current for use in the Manual mode of operation as well as protection of
the system.
Contact Input Circuits
Five contact input circuits powered from an internal 13 Vdc power supply provide input control from usersupplied, isolated, dry-type contacts.
Raise
Closing a contact across terminals 6U and 7 causes the active operating setpoint to increase. This
function is active as long as the contact is closed.
Lower
Closing a contact across terminals 6D and 7 causes the active operating setpoint to decrease. This
function is active as long as the contact is closed.