COM0003串行模塊卡件
DECS-100通常位于發(fā)電機(jī)導(dǎo)管箱中。它設(shè)計(jì)用于面板后面安裝，需要一個(gè)用于前面板觀察的切口。提供的安裝硬件包括六個(gè)#12螺紋形成螺釘，穿過導(dǎo)管箱中的安裝孔并擰入塑料中DECS-100的外殼。鋼制安裝螺釘?shù)慕ㄗh扭矩范圍為4.07至4.52牛頓米（36至40英寸磅）。該裝置必須安裝在環(huán)境溫度變化的地方不超過第1節(jié)“一般信息”中規(guī)定的允許環(huán)境條件，規(guī)格。DECS-100包裝尺寸如圖4-1所示。切口和鉆孔尺寸
如圖4-2所示。圖紙尺寸以英寸和毫米為單位（括號(hào)內(nèi)）。DECS-100連接取決于應(yīng)用和勵(lì)磁方案。不正確的接線可能導(dǎo)致裝置損壞。檢查零件號(hào)，以確保您之前擁有正確的裝置連接和施加功率。DECS-100終端
DECS-100裝置有兩種類型的接口端子（圖4-3）。一種是四分之一英寸快速連接端子，另一種是9針DB9連接器。所有端子均位于裝置后部。
四分之一英寸快速連接端子標(biāo)簽位于殼體后部。表演的電線常見功能，如電壓傳感引線，應(yīng)分組在一起。9引腳DB-9型連接器用于與IBM兼容PC和手持計(jì)算機(jī)的臨時(shí)接口。
圖4-3顯示了DECS-100后面板上的端子連接。除非另有說明
如上所述，連接線的最小尺寸應(yīng)為14 AWG?？偩€電壓感應(yīng)輸入（可選）
總線電壓傳感端子標(biāo)記為B1和B3。這些端子僅用于：包括電壓匹配選項(xiàng)。母線輸入對發(fā)電機(jī)感應(yīng)不相位敏感。表4-1
列出總線電壓感測的端子分配。發(fā)電機(jī)電壓感應(yīng)輸入
發(fā)電機(jī)電壓感應(yīng)端子標(biāo)記為E1、E2和E3。DECS-100配備有：三相感應(yīng)作為標(biāo)準(zhǔn)。單相感應(yīng)通過連接C相感應(yīng)獲得端子E2和E3的輸入。表4-2列出了三相和單相的端子分配發(fā)電機(jī)電壓感應(yīng)。
B相線路電流傳感輸入
通過用戶提供的電流互感器（CT）降低發(fā)電機(jī)線路電流。次要的來自該變壓器的電流被施加到標(biāo)記為CT1和CT2的端子。
輔助輸入
附件輸入電壓端子標(biāo)記為A和B，并接受±3 Vdc的最大信號(hào)。
相對于端子B，施加到端子A的正電壓導(dǎo)致激活模式設(shè)定點(diǎn)：
增長對于每±1 Vdc的變化，激活模式設(shè)定值將實(shí)現(xiàn)±10%的變化。
升高和降低觸點(diǎn)輸入
遠(yuǎn)程設(shè)定點(diǎn)調(diào)整可通過連接單極雙擲（SPDT）或雙擲（SDT）來實(shí)現(xiàn)，彈簧復(fù)位，中心斷開開關(guān)連接到標(biāo)記為6U、7和6D的端子。要連接此開關(guān)，中心極或公共端子必須連接到端子7。其他兩個(gè)端子連接到端子6U和6D。
該遠(yuǎn)程調(diào)節(jié)開關(guān)可安裝在距離DECS-100 150英尺的地方，屏蔽電纜。只能將干燥、不接地的開關(guān)觸點(diǎn)應(yīng)用于升高和降低接觸輸入。
The DECS-100 is normally located in the generator conduit box. It is designed for behind the panel
mounting and requires a cutout for front panel viewing. Supplied mounting hardware consists of six #12
thread-forming screws that pass through mounting holes in the conduit box and thread into the plastic
shell of the DECS-100. The recommended torque range for the steel mounting screws is 4.07 to 4.52
newton-meters (36 to 40 inch-pounds). The unit must be mounted where the ambient temperature does
not exceed the allowable environmental conditions called out in Section 1, General Information,
Specifications. DECS-100 package dimensions are shown in Figure 4-1. Cutout and drilling dimensions
are shown in Figure 4-2. Drawing dimensions are shown in inches and millimeters (in parenthesis). DECS-100 connections are dependent on the application and excitation scheme. Incorrect wiring may
result in damage to the unit. Check the part number to ensure that you have the correct unit before
connecting and applying power. DECS-100 Terminations
DECS-100 units have two types of interface terminals (Figure 4-3). One type is quarter-inch, quickconnect terminals and the other is a 9-pin DB9 connector. All terminals are located on the rear of the unit.
The quarter-inch, quick-connect terminal labels are located on the rear of the case. Wires performing
common functions, such as voltage sensing leads, should be grouped together. The 9-pin DB-9 type
connector is used for temporary interface with both IBM compatible PCs and hand-held computers.
Figure 4-3 shows the terminal connections located on the rear panel of the DECS-100. Except as noted
above, connections should be made with minimum wire size of 14 AWG.Bus Voltage Sensing Inputs (Optional)
The bus voltage sensing terminals are labeled B1 and B3. These terminals are used only on units that
include the Voltage Matching option. The bus input is not phase sensitive to generator sensing. Table 4-1
lists the terminal assignments for bus voltage sensing. Generator Voltage Sensing Inputs
The generator voltage sensing terminals are labeled E1, E2, and E3. The DECS-100 comes equipped for three-phase sensing as standard. Single-phase sensing is obtained by connecting the C-phase sensing input to terminals E2 and E3. Table 4-2 lists the terminal assignments for three-phase and single-phase generator voltage sensing. Phase B Line Current Sensing Input
Generator line current is stepped down through a user-supplied current transformer (CT). Secondary current from that transformer is applied to terminals labeled CT1 and CT2.
Accessory Input
The accessory input voltage terminals are labeled A and B and accept a maximum signal of ±3 Vdc.
Positive voltage applied to terminal A with respect to terminal B causes the active mode setpoint to
increase. For every ±1 Vdc change, a ±10% change in the active mode setpoint is achieved.
Raise and Lower Contact Inputs
Remote setpoint adjustment may be accomplished by connecting a single-pole, double-throw (SPDT),spring return, center-off switch to the terminals labeled 6U, 7, and 6D. To connect this switch, the center pole, or common terminal, must be connected to terminal 7. The other two terminals are connected toterminals 6U and 6D.
This remote adjust switch may be mounted up to 150 feet away from the DECS-100 when using twisted,shielded cable. Only dry, ungrounded switching contacts should be applied to the Raise and Lower
contact inputs.
