DS200SDCIG2B - DC Power Supply and Instrumentation Board

SPECIFICATIONS:

Part No: DS200SDCIG2B
Manufacturer: General Electric
Product Type: DC Power Supply and Instrumentation Board
Function: Interface Circuitry For DC2000 Drives
Series: DC2000
Input Voltage: 100–240 VAC
Software Compatibility: LabVIEW, MATLAB, Python API
Output Voltage Range: 0–30 V DC
Output Current Range: 0–5 A
Power Output: 150 W
Voltage Regulation: ±0.01%
Operating temperature: 0°C to 50°C
Power Supply Voltage: 24 V dc
Board Size: 2.8 cm high x 8.6 cm
Weight: 2.5 kg
Availability: In Stock
Country of Origin: USA
Manual: GEH-6005

FUNCTIONAL DESCRIPTION:

DS200SDCIG2B is a DC Power Supply and Instrumentation Board manufactured and designed by General Electric for the DC2000 Series used in Drive Control Systems. DC2000 drives that contain a 2.11 SDCI board can provide only non-reversing, non-plugging (NRX) motor-held control. The G1 version of the SDCI board provides internal 10 A NRX motor field control, the G2 version controls an external field supply. The DS200SDCI DC Power Supply and Instrumentation Board (SDCI) provides logic power and interface circuitry for the DC2000 drive. The board includes the following circuits:

• +5 V dc, 4A; +15 V dc, 0.4 A; +24 V dc, and 115 V ac, 0.4 power supplies
• Power circuits for motor fields (except the SCR module)
• Driver circuits for the gating of the armature SCR

There are two group numbers of the SDCI. The G1 version of the board includes circuits for an internal $10 A field exciter, the G2 version is used with external field exciters. The DC power supply within this system provides a stable output of direct current (DC) voltage, which is adjustable depending on the needs of the circuit or device being tested. It allows users to set specific voltage and current levels, ensuring that the circuit operates under controlled conditions. This can be crucial for testing components like resistors, capacitors, transistors, or complete systems, ensuring they function as expected under varying electrical conditions.

The instrumentation board integrated with the power supply typically includes various measurement tools such as voltmeters, ammeters, oscilloscopes, and multimeters. These instruments allow users to monitor and measure key electrical parameters, such as voltage, current, resistance, and waveform characteristics, all in real time. The instrumentation board enables detailed analysis of the circuit’s behavior, helping engineers and technicians detect faults, optimize designs, and ensure the correct operation of the system.

POWER SUPPLIES:

The SDCI board receives 38 V ac (10%) from the control power transformer (CPT). This voltage is rectified and Filtered to produce the unregulated 24 V DC outputs. The +24 V DC output is rated at 3 A, the -24 V do output is rated at 1 A. Of these, 0.5 A is available for external loading. Regulators on the SDCI derive 15 V dc from the 24 V dc supplies. The 15 V DC outputs are rated at 0.4 A, of which 0.25 A is available for external loading. of which 0.25 A is available for external loading. The SDCI also generates a +5 V dc, 4 A output from the +24 V dc supply. The PSEN signal on connector 2PL goes to a TTL low state when the +5 V do supply is in regulation. The signal goes high if the supply goes out of regulation. When high, PSEN is used to generate a microprocessor reset on the SDCC card.

FIELD POWER CIRCUITRY AND CURRENT VCO:

The G1 version of the SDCI board includes a field supply circuit for fields up to 10 A. The SDCIG1 board contains all field power circuitry, except the SCR module. The field power circuit contained 011 the SDCIGl board includes snubbers and a reactor. Field power is input at stab terminals ACl through AC3. The field current is 'filtered by the reactor. The field is connected to stab terminals FAC2 and FAC3. Depending on the drive frame size, a 3-phase MOV may be attached to stab terminals MOV1 through MOV3. The field outputs and MOV outputs are protected by fuses FU5 and FU6. Neon lights LT5 and LT6 indicate if FU5 or FU6, respectively is blown. The SDCIG2 board is used in applications greater than 10 A. These applications require a field power circuit that is external to the SDCI board.

Both group numbers of the SDCI board include a voltage-controlled oscillator (VCO) circuit for feedback signals from the field shunt. The VCO converts the input voltage from the field shunt to a frequency signal. The nominal output frequency of the VCO is 250 kHz; the output frequency varies from 0 to 500 kHz, depend- ing upon the input voltage. The frequency signal is sent to the SDCC card through lPL-9.

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FREQUENTLY ASKED QUESTIONS:

What is a DC Power Supply and Instrumentation Board?

A DC Power Supply and Instrumentation Board is an essential device used to convert electrical energy into a stable and regulated DC output, catering to various industrial, research, and educational applications. It typically includes features for precise voltage and current control, safety mechanisms like over-voltage and short-circuit protection and interfaces for monitoring and measuring electrical parameters.

How does a DC Power Supply ensure voltage and current stability?

DC Power Supplies utilize advanced voltage regulation techniques, including linear or switching regulators, to maintain a consistent output voltage and current regardless of input variations or load changes. These boards are equipped with feedback mechanisms that continuously monitor output parameters and make real-time adjustments to prevent fluctuations.

How do DC Power Supply boards integrate with modern instrumentation systems?

DC Power Supply boards are designed to seamlessly integrate with modern instrumentation systems by incorporating advanced communication interfaces such as USB, Ethernet, or RS-232. These interfaces enable remote monitoring, control, and data logging, allowing for automation and real-time analysis.