DS200LDCCH1AHA - Drive Control/LAN Communication Board

SPECIFICATIONS:

Part Number: DS200LDCCH1AHA
Manufacturer: General Electric
Series: Mark V
Product Type: Drive Control/LAN Communication Board
Power Supply: 24V D
Number of relay channels: 32
Power Consumption: < 5W
Ethernet Port: 1 x RJ45 Ethernet port
Mounting: DIN-rail mounting
Technology: Surface mount
Operating temperature: -30 to +65°C
Size: 15.9 cm high x 17.8 cm
Repair: 3-7 days
Availability: In Stock
Country of Origin: United States
Manual: GEI-100216

FUNCTIONAL DESCRIPTION:

DS200LDCCH1AHA is a Drive Control/LAN Communication Board manufactured and designed by General Electric as part of the Mark V Series used in GE Speedtronic Control Systems. The Power Supply Board (DCFB) receives 38 V AC and 115 V AC (or 24 V DC) input power from the Control Power Transformer (CPT). It distributes control-level power to the drive and supplies 115 V AC power (NA) to the enclosure fans. The DCFB board contains the following circuits:

• Integrated Microprocessor Control – Manages core operations of the drive system, including motor control and interfacing with customer input/output (I/O) functions for seamless automation and performance.

• LAN Communication Management – Handles real-time communication over the local area network (LAN), enabling coordinated control of drive I/O and integration with other system components.

• Application Software & Configuration Storage – Stores and executes the drive's operational software, along with customer-specific settings and configuration data for tailored performance.

• Built-in Operator Interface – Provides an onboard interface for performing parameter adjustments, system configuration, and real-time diagnostics to facilitate maintenance and troubleshooting.

• Drive Reset and Recovery Functions – Includes both hardware and software mechanisms to reset the drive system, ensuring reliable recovery from fault conditions and minimizing downtime.

DRIVE CONTROL/LAN POWER SUPPLIES :

• The DCFB board receives 38 V AC (±10%) from the Control Power Transformer (CPT), corresponding to a 24 V DC equivalent. This input is full-wave rectified and filtered to produce unregulated ±24 V DC outputs. The +24 V DC output is rated at 3 A, while the -24 V DC output supports up to 1 A. From these, the board derives regulated ±15 V DC outputs using onboard regulators. Each ±15 V DC supply is rated at 0.8 A, with up to 0.25 A available for external loads.

• Additionally, a regulated +5 V DC output rated at 4 A is generated from the +24 V DC supply. The /PSEN signal, located on connector 2PL, indicates the status of this +5 V output. It remains in a TTL low state while the +5 V DC is within regulation, but switches high if the supply goes out of regulation, triggering a microprocessor reset on the Drive Control Card (SDCC/LDCC).

• The board also provides isolated +5 V and ±15 V DC supplies dedicated to powering the armature current feedback circuits. Protection for the outputs is ensured by onboard fuses: FU2 and FU3 (7 A, 2AG) safeguard the DC supplies, with LEDs CR51 and CR55 serving as blown fuse indicators. Fuse FU1 (1/2 A, 2AG) protects the 115 V AC output, and its status is shown via neon indicator LT1.

VOLTAGE AND CURRENT FEEDBACK VCO CIRCUITS:

The DCFB board includes voltage-controlled oscillator (VCO) circuits that convert input voltages to frequency signals. Each VCO has a nominal output frequency of 250 kHz. The output frequency varies from 0 to 500 kHz, depending on the input voltage. VCO outputs are sent to the SDCC/LDCC board through connector 1PL to provide feedback on the following:

• SCR bridge AC input voltage
• Output bridge voltage
• Millivolt signals from field shunts
• Millivolt signals from armature shunts

The output bridge VCO circuit sends feedback to the SDCC/LDCC board via connector 1PL, pin 13 (1PL-13). Voltage scaling for this circuit is configured using DIP switch SW4. A frequency-to-voltage reconstruction circuit generates a diagnostic signal available at test point TP37 on the SDCC/LDCC board through 1PL-37, which can be monitored using an AC-coupled oscilloscope. A second VCO circuit provides motor voltage feedback through 1PL-39, with DIP switch SW5 used to adjust its input voltage level.

AC LINE MAGNITUDE AND ZERO CROSSING:

The DCFB board includes amplifier circuits that condition the AC line-to-line voltage signals. These processed voltage feedback signals are transmitted to the SDCC/LDCC board via connector pins 1PL-11, 1PL-12, and 1PL-29. They are used to detect SCR failures in the power bridge and may also assist in generating the synchronization signal for SCR firing. Voltage scaling is configured through DIP switches SW1, SW2, and SW3.

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FREQUENTLY ASKED QUESTIONS:

What is a Drive Control / LAN Communication Board?

A Drive Control / LAN Communication Board is a hardware interface module that enables industrial drives (like VFDs, servo drives) to communicate with other devices or systems over a local area network (LAN). It supports data exchange, control commands, and real-time monitoring.

What is the input voltage requirement for the Drive Control/LAN Communication Board?

The board receives an input of 38 V AC (±10%) from the Control Power Transformer (CPT). This is then converted to 24 V DC, which is required for the board's operation. The system uses full-wave rectification and filtering to produce unregulated ±24 V DC outputs.