ABB Drives SDCS-POW-1 DCS 500 Power Supply Board

Description

The SDCS-POW-1 is a switched-mode power supply board designed for use in DCS 500 converter modules. Mounted directly on the electronic support framework, this unit functions in a flyback configuration to generate all required internal DC operating voltages for the SDCS-CON-2 main control board and associated electronic peripheral boards. The board features universal system adaptability, operating independently of the specific current or voltage ratings of the drive module. It accommodates standard dual-voltage AC mains inputs, selectable via an onboard slide switch, and includes dedicated jumper configurations to manage encoder power distribution based on the specific control board and I/O board pairing in use.

Features

• Switched-mode flyback power supply configuration for efficient internal DC distribution.
• Independent operation across the entire current and voltage range of DCS 500 modules.
• Onboard selector switch (SW1) for manual selection between 115 V AC and 230 V AC input lines.
• Configurable encoder supply voltage output via hardware jumpers X3, X4, and X5.
• Dedicated integration terminals for connecting external backup capacitance to extend mains buffering runtime.
• Potential-isolated relay output (X96-DO8) featuring an integrated metal-oxide varistor (MOV) for transient protection.

Applications

• DCS 500 industrial DC drive converter modules.
• Internal DC voltage distribution and control board powering.
• Pulse encoder voltage supply management in motor speed measurement loops.

Technical Specifications

Jumper and Switch Configuration

Terminal Assignments

Installation Guidelines

• Voltage Verification: Ensure the AC supply selection switch (SW1) is set to match the incoming mains line voltage (115 V AC or 230 V AC) prior to applying power to prevent hardware damage.
• Line Potential Hazard: Note that high voltage line potential is present across specific internal components of the board. Disconnect and lock out all primary power sources before servicing.
• Encoder Power Configuration: When utilizing an SDCS-CON-2 control board without an SDCS-IOB-3 I/O board alongside a pulse encoder, hardware jumpers X3, X4, and X5 must be manually configured to the proper voltage level matching the encoder's specifications.
• Mains Buffering Extension: To extend ride-through capability beyond the standard 30 ms buffer window, external capacitance modules can be wired directly to the designated X95 backup supply terminals.