Siemens G26004-A2105-P100-2 Rev 1.3 Printed Circuit Board

The G26004-A2105-P100-2 is a high-quality printed circuit board manufactured by Siemens, revision 1.3, designed for use in industrial automation systems including SIMODRIVE drives, SINUMERIK controls, and power supplies. The board is a 4-layer FR4 substrate with 2 oz copper traces, gold-plated edge connectors, and conformal coating for protection against environmental contaminants. It hosts a mix of analog and digital circuits for signal conditioning, power switching, and communication interfacing. Revision 1.3 includes improved thermal management and updated component placements for enhanced reliability.

Technical Specifications

• Layer Count: 4 layers (signal, ground, power, signal)

• Base Material: FR4, UL 94V-0, 1.6 mm thickness

• Surface Finish: ENIG (Electroless Nickel Immersion Gold)

• Connectors: 2x 48-pin DIN 41612 (type C), 1x 20-pin header, 1x 6-pin power terminal

• Component Types: SMD and through-hole (including microcontrollers, optocouplers, power MOSFETs, electrolytic capacitors)

• Dimensions: 185 mm × 120 mm (Eurocard format)

Functional Description

The board typically functions as an interface between the main controller and power stage in a drive system. It processes encoder feedback signals, generates PWM gate drive signals, monitors temperature and current, and communicates with the host PLC via serial or fieldbus. Onboard diagnostics include overcurrent detection, voltage monitoring, and watchdog circuitry. The board also includes a configuration EEPROM that stores parameters for the specific application.

Electrical Characteristics

Operating voltage: 5 VDC (logic) and 24 VDC (power section). Isolation voltage between logic and power sections: 2.5 kV RMS. Current capacity: signal traces up to 2 A, power traces up to 15 A. The board meets IEC 61000-4-2 (ESD), -4-4 (burst), and -4-5 (surge) immunity standards.

Reliability and Environmental

Operating temperature: -25°C to +85°C; storage: -40°C to +100°C; humidity: 5–95% non-condensing. The board is coated with a polyurethane conformal layer for resistance to dust, moisture, and mild chemicals. MTBF is estimated at 300,000 hours per Telcordia SR-332. The board is RoHS compliant and CE marked.

Applications

Used as a replacement part in Siemens drive cabinets (e.g., SIMOVERT Masterdrives 6SE70 series) and as a control card in special-purpose machinery. Revision 1.3 is backward compatible with earlier revisions, but note that firmware on the board may need to be updated when used with newer PLC firmware versions.