ALSTOM MPS022 Power Supply Unit

Configured for industrial power distribution in VMEbus and DCS architectures, the Alstom Converteam MPS022 (MPS022 Power Supply Unit) provides direct physical/electrical execution of AC/DC to DC conversion and voltage regulation for automation hardware.

Hardware Specifications

Industrial Control and Network Characteristics

• Backplane bus communication velocity: The unit provides stabilized power to the VMEbus backplane, ensuring that high-speed communication modules operate without voltage-induced packet corruption. This is necessary to maintain deterministic data flow between control modules.
• Profinet / EtherNet/IP deterministic networks: While the power supply operates at the physical layer, its low-ripple output (<10 mVpp) is mandatory for the operation of deterministic Ethernet nodes and sensitive I/O cards, preventing noise injection that could trigger false network status flags.
• I/O density scaling: The compact 6U/8.12 HP form factor allows for integration into high-density rack systems, providing localized power for multi-card clusters without requiring external DC distribution infrastructure.
• Firmware flash compatibility: The unit employs active power factor correction (PFC) circuitry controlled by dedicated internal logic, which ensures optimal power utilization and stability during variations in input power quality.

Frequently Asked Questions

Q: Does the MPS022 require external cooling in high-density racks?

A: The MPS022 is designed for high-efficiency operation; however, ensure adequate airflow is maintained through the 6U rack space. When installed in high-density configurations, forced air cooling is recommended to prevent thermal derating of the output power.

Q: Is the output voltage adjustable for sensitive load matching?

A: The MPS022 provides a tightly regulated 24 VDC output designed for standard industrial loads. Voltage adjustments should be performed only through the factory-calibrated potentiometers to ensure output accuracy and the continued effectiveness of the integrated over-voltage protection circuits.

Field Installation Guidelines

• Mounting: Secure the unit into the 19-inch rack frame using the designated 8.12 HP mounting hardware. Ensure the backplane connector is fully engaged to minimize contact resistance, which is mandatory for maintaining the 20 A peak current capacity.
• Grounding: Connect the chassis ground to the rack's primary earth bus. A low-impedance connection is mandatory for the effective operation of the internal surge protection and to provide a reference for the output DC common.
• Wiring: Utilize heavy-gauge wiring for the 24 VDC output to minimize voltage drop over the length of the run. Separate DC output cables from high-voltage AC input lines by at least 150 mm to prevent electromagnetic crosstalk and noise injection into downstream controller circuits.