產(chǎn)品詳情介紹
3BSE003911R0001控制邏輯主板
一般操作電壓和電流控制（本地和遠(yuǎn)程）分別設(shè)置輸出電壓和電流的邊界限制。負(fù)載電阻與控制設(shè)置的關(guān)系決定了電源是在恒壓模式還是恒流模式下運(yùn)行。模式之間的自動(dòng)交叉在以下負(fù)載電阻值下發(fā)生：負(fù)載電阻（歐姆）=電壓控制設(shè)置（伏特）電流控制設(shè)置（安培）負(fù)載電阻越高，電源在恒壓模式下工作，在恒流模式下工作電阻越低。操作模式該電源的設(shè)計(jì)應(yīng)確保其操作模式是通過(guò)在端子排TB3上的端子之間進(jìn)行捆扎連接來(lái)選擇的，端子板TB3用螺栓固定在電源的后面板上。端子名稱為絲印在電源后面板上。（請(qǐng)參閱下表）。正常操作（圖1）出廠時(shí)，每個(gè)電源配置為恒定/電壓、恒定/電流、本地編程、本地傳感、單機(jī)組操作模式。這種正常操作模式通常用于大多數(shù)應(yīng)用程序。除非另有說(shuō)明，否則所有性能規(guī)范均在此配置中定義。紋波、編程速度、瞬態(tài)響應(yīng)和穩(wěn)定性都通過(guò)這樣配置的電源進(jìn)行了優(yōu)化。連接負(fù)載必須使用單獨(dú)的一對(duì)連接線將每個(gè)負(fù)載連接到電源輸出端子。這將最小化負(fù)載之間的相互耦合效應(yīng)，并將充分利用電源的低輸出阻抗。如果存在強(qiáng)交流或射頻場(chǎng)，則每對(duì)連接線必須盡可能短，并絞合或屏蔽，以減少噪聲拾取。（如果使用屏蔽線對(duì)，將屏蔽線的一端連接到電源處的接地，另一端保持?jǐn)嚅_(kāi)。）
遙感（圖2）
在直流負(fù)載線壓降（IR）會(huì)對(duì)負(fù)載性能產(chǎn)生不利影響的應(yīng)用中，可以檢測(cè)負(fù)載而不是輸出端子的電壓。因此，遙感將消除通過(guò)配電系統(tǒng)的負(fù)載電流變化的影響。然后，最大可用負(fù)載電壓等于額定電源輸出電壓減去總IR降。遙感連接1.拆除以下端子之間的跳線：TB3-1和2 TB3-7和8 2.將負(fù)載的正極連接到TB3-2。3.將負(fù)載的負(fù)極連接到TB3-7或6.4.如果負(fù)載的引線約為5英尺或更長(zhǎng)，可能需要在負(fù)載上連接電容器；或TB3-1和TB3-2之間的電容器，加上TB3-7和TB3-8。在100-100000mfd范圍內(nèi)。為了保護(hù)系統(tǒng)免受開(kāi)路引線的影響，應(yīng)在TB3-1和TB3-7和TB8之間安裝一個(gè)100W?W 5%的電阻器。因?yàn)槿绻霈F(xiàn)問(wèn)題，每個(gè)應(yīng)用程序可能不同，請(qǐng)咨詢工廠。注意：由于電壓表內(nèi)部連接到感測(cè)端子，它將自動(dòng)指示負(fù)載電壓，而不是電源輸出端子電壓。遠(yuǎn)程編程該電源可通過(guò)使用外部電阻以遠(yuǎn)程編程模式（外部控制）操作。將電源的編程端子連接到遠(yuǎn)程編程設(shè)備的電線應(yīng)絞合，如果存在強(qiáng)交流或射頻場(chǎng)，則應(yīng)屏蔽。
GENERAL OPERATION
The voltage and current controls (local and remote) set the boundary limits for the output voltage and current respectively. The relationship of load resistance to control settings determines whether the power supply is operating in constant voltage or constant current mode. Automatic crossover between modes occurs at the following load resistance value: Load resistance (Ohms) = Voltage Control Setting (volts) Current Control Setting (amperes) At higher load resistance, the power supply operates in the constant-voltage mode and at lower resistance in the constant-current mode.MODES OF OPERATION This power supply is designed so that its mode of operation is selected by making strapping connections between terminals on terminal strip TB3 which is bolted to the rear panel of the power supply. The terminal designations are silk-screened on the rear panel of the power supply. (Refer to the following chart).NORMAL OPERATION (FIGURE 1) When shipped from the factory, each supply is configured for constant/voltage, constant/current, local programming, local sensing, single unit mode of operation. This normal mode of operation is usually used in most applications. All performance specifications unless otherwise stated are defined in this configuration. Ripple, programming speed, transient response and stability are optimized with the supply so configured.Connecting Load Each load must be connected to the power supply output terminals using separate pairs of connecting wires. This will minimize mutual coupling effects between loads and will retain full advantage of the low output impedance of the power supply. Each pair of connecting wires must be as short as possible and twisted or shielded if strong AC or RF fields are present to reduce noise pickup. (If a shielded pair is used, connect one end of the shield to ground at the power supply and leave the other end disconnected.)
REMOTE SENSING (FIGURE 2)
In applications where the effect of the voltage drop (IR) of the DC load wires would adversely affect the performance of the load it is possible to sense the voltage at the load instead of the output terminals. Remote sensing will therefore remove the effect of changes in load current through the power distribution system. The maximum available load voltage then equals the rated power supply output voltage less the total of the IR drop. Connections for Remote Sensing 1. Remove jumpers between the following terminals: TB3-1 and 2 TB3-7 and 8 2. Connect the positive point of load to TB3-2. 3. Connect the negative side of the load to TB3-7 and 6. 4. If the leads to the load are approximately 5 feet or more it may be necessary to connect a capacitor across the load; or capacitors between TB3-1 and TB3-2 plus TB3-7 and TB3-8. Within the range of 100-1000mfd. To protect the system from open sense leads, a 100W ? Watt 5% resistor should be installed between TB3-1 & 2 and TB3-7 & 8. Because each application can be different consult factory if problems occur. NOTE: Since the voltmeter is internally connected to the sensing terminals, it will automatically indicate the voltage at the load, not the power supply output terminal voltage.REMOTE PROGRAMMING This power supply may be operated in a remotely programmed mode (externally controlled) by the use of an external resistance. The wires connecting the programming terminals of the supply to the remote programming device should be twisted or if strong AC or RF fields are present, shielded.
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