GE DS200DCFBG1B DC Feedback Power Supply Board

GE DS200DCFBG1B DC Feedback Power Supply Board

Part Number DS200DCFBG1B Manufacturer General Electric Country of Manufacture As Per GE Manufacturing Policy Series Mark V Function Module Availability In StockDS200DCFBG1B is a DC Power Supply Feedback Board manufactured and designed by General Electric. It used in EX2000, DC2000, CB2000, FC2000, GF2000, ME2000, and AC2000, IGBT drive applications. The EX2000 uses the board for a different purpose than the drive does. The DCFB power supply board receives thirty-eight (38) and 115 VAC (24 VDC) input power from the control power transformer (CPT) and provides control level power to the drive and 115 VAC power to the enclosure fans. Features The DCFB board includes the following circuits. 

 Control level power supplies (+5, +/- 15 and +/- 24 VDC) Motor field power circuits (Except the SCR Module) Driver circuits for the motor field SCR gate pulse generators. Circuits to monitor numerous AC line & DC motor signals including Armature current and voltages Motor field current AC line current AC line Voltage magnitude and phase sequence. Characteristics DCFB boards include twelve configurable jumpers ( thirteen (13) on REV BKC and later boards) and seven DIP switches for the selection of customer options; most jumpers and DIP Switch selections are factory set. The +24 V dc supply is used by the DCFB board to produce a +5 V dc, 4 A output as well. When the +5 V dc supply is regulated, the /PSEN signal on 2PL enters a TTL low state. 

If the +5 V dc supply is not regulated, the signal enters a high state. When set to high, /PSEN causes the Drive Control Card's (SDCC/LDCC) microprocessor to reset. The armature current feedback circuits are powered by isolated +5 and 15 V dc supplies from the DCFB board. Fuse numbers FU2 and FU3 guard the power supply outputs against short circuits (7 A, 2AG). For these fuses, light-emitting diodes (LEDs) CR51 and CR55 offer blown fuse indications. Fuse FU1 (1/2 A, 2AG) is used to protect the 115 V ac output. Blowing fuses are indicated for FU1 by the neon light LT1. Voltage and Current Feedback VCO Voltage-controlled oscillator (VCO) circuits on the DCFB board transform input voltages into frequency signals. The nominal output frequency of each VCO is 250 kHz. Depending on the input voltage, the output frequency ranges from 0 to 500 kHz. 

Through connection 1PL, VCO outputs are transmitted to the SDCC/LDCC board to provide the following feedback: SCR bridge ac input voltage Output bridge voltage Motor voltage (NA) Millivolt signals from field shunts Millivolt signals from armature shunts Through connector 1PL, pin 13, the output bridge VCO circuit communicates feedback to the SDCC/LDCC board (1PL- 13). Scaling the voltage provided to the circuit is accomplished using DIP switch SW4. Testpoint TP37 on the SDCC/LDCC board receives a diagnostic signal through 1PL-37 from a frequency-to-voltage reconstruction circuit. An ac-coupled oscilloscope can be used to see the diagnostic bridge voltage signal. Through 1PL-39, the second VCO communicates motor voltage feedback to the SDCC/LDCC board. Scaling the voltage provided to the circuit is accomplished using DIP switch.

Hardware Tips and Specifications

This DS200DCFBG1B printed circuit board or PCB for short comes with its own series of hardware component inclusions and specifications that introduce its intended Mark V Series functionality. Voltages rated between 38 and 115 VAC can be directly supplied to the board via the control power transformer. Frequencies for the board are dependent upon the input voltage, but can range from 0 to 500 kHz.The board features a number of circuits that work to power the board and the installed drive. DS200DCFBG1B is comprised of motor field power, driver, AC/DC monitoring, and control level supply circuits. 

The twelve jumpers and seven DIP switches found on the board provide users with configurable system options; fuse switch diagnostics are presented using the two LED and one neon indicator lights found on the board. Any jumper present on the base circuit board of this DS200DCFBG1B product would be accompanied by the JP factory-printed nomenclature label, while with the DIP switches, it is the SW label. Three protective fuses prevent any interruptions in power supplies. DS200DCFBG1B Voltages can be monitored using the five test points integrated on the board. Similarly to this DS200DCFBG1B device's fuses, this DS200DCFBG1B product makes use of a specific series of connectors for interfacing opportunities with other Mark V Series products. 

This DS200DCFBG1B Power Supply Board utilizes eighteen total plug-style connectors and nine additional stab-style connectors, with various functions as listed in the DS200DCFBG1B Datasheet supplied above once again. The purposes of this DS200DCFBG1B Board's three included LED indicators are explained in detail in the original DS200DCFBG1B instructional manual attached above, and each LED indicator is accompanied by its own factory-printed nomenclature label. The LED diagnostic indicators included in the DS200DCFBG1B PCB's assembly include:

The CR51 FU2 dc regulator status LED indicator

The CR55 FU3 dc regulator status LED indicator

The LT1 FU1 ac line status LED indicator