The DS200DCFBG1BLC is a high-performance power supply board from the GE Mark V DS200 series, engineered for industrial drive applications including DC2000, CB2000, EX2000, FC2000, GF2000, ME2000, and AC2000 IGBT drives. Fully designated as DS200DCFBG1BLC, this board converts input power from the control power transformer (CPT) into regulated control-level voltages while providing comprehensive monitoring, protection, and feedback functions essential for reliable drive operation.
The DS200DCFBG1BLC accepts 38 V ac (±10%) or 24 V dc input and generates stable +5 V dc, ±15 V dc, and ±24 V dc outputs. It also supplies isolated 115 V ac power for enclosure fans where applicable. With built-in voltage-controlled oscillator (VCO) circuits, fuse protection with LED/neon indicators, configurable jumpers and DIP switches, and extensive connector interfaces, the DS200DCFBG1BLC ensures robust performance and easy field configuration.
This product introduction provides a complete, SEO-optimized specification for the DS200DCFBG1BLC. All references use the full product designation DS200DCFBG1BLC to meet Google’s content uniqueness and keyword relevance standards.
Key Features of DS200DCFBG1BLC
Multiple Power Outputs: +5 V dc (4 A), ±15 V dc (0.8 A each), ±24 V dc (3 A / 1 A)
Input Flexibility: Accepts 38 V ac (±10%) or 24 V dc from control power transformer
Voltage and Current Feedback: Built-in VCO circuits for armature current, field current, AC line voltage, and DC bridge voltage
Protective Fuses: FU1 (115 V ac), FU2 and FU3 (±24 V dc lines) with visual indicators
Configurable Hardware: 12 jumpers (JP1 to JP12, plus JP13 on later revisions) and 7 DIP switches (SW1 to SW7)
Diagnostic Testpoints: +5 V, +15 V, -15 V, DCOM (common), and ACCT signal testpoints
Multiple Connectors: 1PL, 2PL, 4PL, 5PL, 1CPL, CNPL, CPTPL, FAPL, NPL, PPL, SQPL, IA1PL, IA2PL, IF1PL, IF2PL, MACPL, and stab terminals
Status Indicators: Red LEDs for fuse status (CR51, CR55) and neon lamp (LT1) for 115 V ac fuse
Gate Array SCR Firing Control: With serial PROM programming at power-up
Contactor Drive Circuits: Relay K2 for MD contactor pilot relay and FET outputs via MACPL
Functional Description of DS200DCFBG1BLC
The DS200DCFBG1BLC receives 38 V ac (or 24 V dc) from the control power transformer. This input is full-wave rectified and filtered to produce unregulated ±24 V dc outputs. Linear regulators then derive ±15 V dc, and a switching regulator generates the +5 V dc output. The DS200DCFBG1BLC also produces isolated +5 V and ±15 V dc for armature current feedback circuits.
VCO Feedback Circuits
The DS200DCFBG1BLC includes multiple voltage-controlled oscillator (VCO) circuits that convert analog signals into frequency signals sent to the SDCC/LDCC board via connector 1PL. These signals provide feedback for:
SCR bridge AC input voltage
Output bridge voltage
Motor voltage (where applicable)
Millivolt signals from field shunts
Millivolt signals from armature shunts
Each VCO has a nominal output frequency of 250 kHz, varying from 0 to 500 kHz depending on input voltage. The output bridge VCO feeds 1PL-13; a frequency-to-voltage reconstruction circuit provides a diagnostic signal at testpoint TP37 on the SDCC/LDCC board via 1PL-37.
Two additional VCO circuits provide feedback of input voltage from shunts. Two motor armature VCOs send frequency outputs via 1PL-8 and 1PL-10, operating at armature bus potential and fed by an isolator.
Motor Voltage Attenuation and AC Line Monitoring
The DS200DCFBG1BLC includes a motor voltage attenuation circuit that provides an analog representation of motor voltage (0–5 V, biased at 2.5 V) to the SDCC/LDCC board via 1PL-6. DIP switch SW6 scales this feedback.
Amplifier circuits on the DS200DCFBG1BLC process AC line-to-line voltages (V1-2, V2-3, V1-3) for phase loss detection, synchronization signal derivation, and SCR failure detection. DIP switches SW1, SW2, and SW3 scale these feedback signals.
AC Line Current Transformer Interface
For applications using AC line current transformers (ACCTs) on L1 and L3, the DS200DCFBG1BLC uses switch SW7 to select burden resistance based on rated 1 pu DC output current (defined as 0.5 V across ACCT burden resistors). The ACCT signals are sent to the SDCC/LDCC board via 1PL for commutation failure and AC instantaneous overcurrent (IOC) monitoring. Testpoint ACCT allows signal viewing with an oscilloscope.
Contactor and SCR Firing Control
The DS200DCFBG1BLC includes relay K2, serving as a pilot relay for the MD contactor. The SDCC/LDCC board drives this relay through 1PL-34, 1PL-35, and 1PL-36. Connector MACPL provides 24 V dc FET output to the MD contactor driver.
A gate array on the DS200DCFBG1BLC controls SCR firing in the bridge based on signals from the SDCC/LDCC board via 1PL. The gate array is programmed at power-up by a serial PROM. To prevent spurious firing, firing power is removed until programming is complete and +5 V is regulated. The 5 V outputs are converted by gate pulse amplifier circuits into power levels for forward and reverse gate pulse transformers on the DS200PCCA Power Connect Card, sent via 5PL.
Jumper and Switch Configuration for DS200DCFBG1BLC
The DS200DCFBG1BLC includes 12 configurable jumpers (JP1 to JP12) and seven DIP switches (SW1 to SW7). All jumpers and switches on the DS200DCFBG1BLC must be set identically to the board being replaced unless otherwise instructed. Factory settings are provided on test data sheets supplied with each controller.
Jumper Settings (JP1 – JP12)
Jumper | Setting | Description |
JP1 | 1.2 | AC line sync from DCFB using line voltage 2–3 (DC2000/ME2000) |
JP1 | 2.3 | AC line sync from TCCB card (EX2000) |
JP2 | 1.2 | Normal AC contactor dropout delay (~100 ms) |
JP2 | 0 | Minimum delay (manufacturing test) |
JP3, JP4 | 1.2 | Direct input of shunt or external VCO signal (armature #1) |
JP3, JP4 | 2.3 | Input rescaled for analog isolator signal (armature #1) |
JP5, JP6 | 1.2 | Local VCO circuit selected (armature #1) |
JP5, JP6 | 2.3 | Local VCO circuit bypassed (armature #1) |
JP7 | 1.2 | Local VCO circuit enabled (armature #1) |
JP7 | 2.3 | Local VCO circuit disabled (armature #1) |
JP8, JP9 | 1.2 | Direct input of shunt or external VCO signal (armature #2) |
JP8, JP9 | 2.3 | Input rescaled for analog isolator signal (armature #2) |
JP10, JP11 | 1.2 | Local VCO circuit selected (armature #2) |
JP10, JP11 | 2.3 | Local VCO circuit bypassed (armature #2) |
JP12 | 1.2 | Local VCO circuit enabled (armature #2) |
JP12 | 2.3 | Local VCO circuit disabled (armature #2) |
JP13 | 1.2 | Scaling set for shunt (on BKC and later; check LC revision presence) |
JP13 | 2.3 | Scaling set for multibridge totalizing shunt |
DIP Switch Settings (SW1 – SW7)
Switch | Function | Example Settings |
SW1, SW2, SW3 | AC line voltage scaling (V1-2, V2-3, V1-3) | 0 (all off) = 308 V max nominal; 2 (2 on) = 617 V max nominal; use SHVI/SHVM attenuators above 617 V |
SW4 | DC bridge voltage feedback VCO scaling | Same voltage ranges as SW1–SW3 (0: 308 V ac / 341 V dc; 2: 617 V ac / 683 V dc) |
SW5 | DC motor voltage feedback VCO scaling | Same as SW4 |
SW6 | Analog DC motor voltage feedback scaling | 0 = 154 V ac / 171 V dc; 1 = 244 V ac / 270 V dc; 2 = 308 V ac / 341 V dc; 7 = 630 V ac / 697 V dc |
SW7 | AC line CT burden selection (15 positions) | Based on CT secondary current (mA). 0 = <6.0 mA; 1 = 6.0–13.4 mA; 15 = 137–144 mA |
Important Notes for DS200DCFBG1BLC Configuration:
For DC2000 and EX2000 applications, SW1 through SW6 on the DS200DCFBG1BLC must all be set to the same position.
For GF2000/ME2000 applications, SW1–SW4 share one setting, while SW5 and SW6 may be set differently.
Above 617 V ac, SHVI/SHVM attenuators must be used, and switches are set to scale inputs for nominal 20000 counts accordingly.
SW7 is not used on EX2000 applications.
Connector Pin Functions on DS200DCFBG1BLC
The DS200DCFBG1BLC uses multiple connectors for power input, signal I/O, and control. Key connectors are summarized below:
Connector | Interface | Key Signals |
1PL | SDCC/LDCC board | VCO outputs (FIN0, FIN1, FIN2, FIN4, FIN5, FIN6, FIN7, FIN8), /ENFWD, /ENREV, /FF1, /FF2, /RST1, SYNCA, VFBB testpoint, DTYPE (drive type) |
2PL | NTB/3TB, STBA, SLCC, SDCC/LDCC | +5 V, +15 V, -15 V, +24 V, -24 V, DCOM, /PSEN (power supply enable) |
4PL | NTB/3TB or STBA | 115 V ac output (fused and unfused), MA pilot relay K2 contacts (NC, NO, common) |
5PL | PCCA Power Connect Card | Gate pulse outputs A1F–A6F (forward) and A1R–A6R (reverse), P24 (24 V) |
1CPL | SHVI/SHVM board | ACCT1 (L1), ACCT3 (L3), and ACCT common returns |
CNPL | MA contactor | MA contactor control (X1, MA115V) |
CPTPL | Components | 115 V ac (fused/unfused), 38 V ac (both lines), DCOM |
FAPL | Cooling fan | 115 V ac for controller cooling fan (X1, X2) |
NPL | SCR N2 | N2 cathode (red) and gate (white) |
PPL | SCR P1 | P1 cathode (red) and gate (white) |
SQPL | SHVI/SHVM | 25 kHz power (+), (-), and common |
IA1PL | SHVI/SHVM | Armature shunt #1 positive (+) and negative (-) inputs |
IA2PL | SHVI/SHVM | Armature shunt #2 positive (+) and negative (-) inputs |
IF1PL | Shunts | Motor field current shunt positive (+) and negative (-) |
IF2PL | Shunts | Motor #2 field current shunt positive (+) and negative (-) |
MACPL | Contactor drivers | MD1CTRL (common), MDCTRLPW (24 V dc), MD2CTRL, MDCTRLPW for #2 |
Stab terminals | Field wiring | V1, V2, V3 (AC line); P1A, P2A (DC bridge +/-); VM1A/VM1B (motor armature); VM2A/VM2B (motor #2 armature) |
Refer to GEI-100028C, Tables 6 through 22, for complete pinout details.
Protection and Status Indication
The DS200DCFBG1BLC protects downstream circuits with three user-replaceable fuses:
Fuse | Rating | Protected Circuits | Blown Indicator |
FU1 | 1/2 A, 2AG fast-acting | 115 V ac output (customer use / fans) | Neon lamp LT1 |
FU2 | 7 A, 2AG | +24 V, +15 V, and +5 V dc lines | Red LED CR51 |
FU3 | 7 A, 2AG | -24 V and -15 V dc lines | Red LED CR55 |
The /PSEN signal (on 2PL-1) goes low when +5 V dc is in regulation; if +5 V goes out of regulation, /PSEN goes high and triggers a microprocessor reset on the SDCC/LDCC board.
Troubleshooting Tip: If FU2 or FU3 blows repeatedly after disconnecting 1PL, 2PL, and 5PL from the DS200DCFBG1BLC, the board itself should be replaced.
Replacement Procedure for DS200DCFBG1BLC
When replacing a DS200DCFBG1BLC, follow these steps (per GEI-100028C):
Turn off all power to the drive and wait several minutes for capacitors to discharge. Test to verify no voltage exists before touching any circuits.
Open the equipment cabinet door to access the printed wiring boards.
Pull lock tabs on either side of the board rack, then lift the front board carrier (with drive control card) and tilt it forward and down to access the DS200DCFBG1BLC.
Carefully disconnect all cables from the DS200DCFBG1BLC:
For ribbon cables, grasp each side of the cable connector and gently pull free.
For cables with pull-tabs, carefully pull the tab.
Push back on plastic snaps (holders) to release the DS200DCFBG1BLC from the board carrier.
Critical: Verify that all jumpers and DIP switches on the new (replacement) DS200DCFBG1BLC are set in the same position as they were on the old board. If a board revision has added or eliminated a configurable component, refer to GEI-100028C Table 1 and/or Table 2.
Orient the new DS200DCFBG1BLC in the same position as the one removed and install it onto the board carrier. Ensure all plastic snaps snap back into position.
Reconnect all cables as labeled, ensuring proper seating at both ends.
Adjust EE parameter EE.574 (VFB0FS) – voltage feedback offset – as described below.
Swing the front board carrier back up into position, slide the lock tabs into the locking position, and close the drive cabinet door.
Note: Because of upgrades, boards of different revision levels may not contain identical hardware. However, GE Industrial Control Systems ensures compatibility of its replacement boards.
EE Parameter Adjustment for DS200DCFBG1BLC
After installing a DS200DCFBG1BLC, the voltage feedback offset parameter EE.574 (VFB0FS) must be adjusted. The procedure varies with the application (DC2000, CB2000, EX2000, FC2000, GF2000, ME2000, or AC2000 IGBT drive) and the available tools (programmer board, ST2000, GE Control System Toolbox, or LynxOS Configurator). Refer to the applicable drive instruction book for the detailed adjustment procedure.
Warranty and Support for DS200DCFBG1BLC
GE Industrial Control Systems provides warranty terms as detailed in the “Terms and Conditions” brochure. Only fuses FU1, FU2, and FU3 are end-user replaceable components on the DS200DCFBG1BLC. If any other component fails, the entire DS200DCFBG1BLC must be replaced as a unit.
To obtain a replacement board or service assistance, contact the nearest GE Service Office and provide:
GE requisition or shop order number
Equipment serial number and model number
Board number: DS200DCFBG1BLC and full description
Why Choose DS200DCFBG1BLC for Your Drive System?
The DS200DCFBG1BLC offers field-proven reliability, comprehensive monitoring, and flexible configuration. Its ability to work across multiple drive platforms (DC2000, EX2000, ME2000, etc.) makes it a versatile choice for industrial motor control upgrades or repairs. With built-in diagnostics, visual fuse indicators, and testpoints, troubleshooting the DS200DCFBG1BLC is straightforward for trained technicians.
Key advantages of the DS200DCFBG1BLC include:
Robust power delivery with 4 A on +5 V and 3 A on +24 V
Isolated feedback circuits for accurate armature current measurement
Configurable VCO scaling for a wide range of voltage and current ratings
SCR gate drive outputs for both forward and reverse bridges
Comprehensive fault detection including fuse status, phase loss, and overcurrent
