General Electric IS2020LVPSG1A VME Rack Power Supply Module

GE IS2020LVPSG1A VME Rack Power Supply Module

Configured for low‑voltage distribution in Mark VI VME architectures, the GE IS2020LVPSG1A (IS2020LVPSG1A power supply module) provides regulated DC output for detector electronics and adjacent control circuits through its integrated conversion and backplane interface.

Hardware Specifications

Backplane Bus Communication Velocity Licenses

Within GE’s Mark VI control architecture, the LVPS module interfaces with the VME backplane to distribute regulated low‑voltage rails across multiple slots. The backplane communication path is optimized for deterministic power signaling, ensuring stable voltage propagation under varying rack loads. The module’s design supports I/O density scaling by maintaining consistent voltage regulation even when multiple LVPS units are installed in 6HE or 19‑inch racks. Firmware flash compatibility is restricted to LVPS‑specific supervisory logic, preventing cross‑loading with non‑power modules.

Frequently Asked Questions

Q: Can the LVPS module be hot‑swapped in a powered VME rack? A: The module is mechanically removable, but hot‑swap capability depends on the rack’s power distribution configuration. Removing the LVPS may interrupt downstream low‑voltage rails unless redundant supplies are installed.

Q: How does long‑distance cabling affect LVPS output stability? A: The LVPS is designed to compensate for voltage drops across long detector cables. Output regulation accounts for cable losses, maintaining stable delivery within the specified voltage range.

Q: Does the module introduce noise onto the VME backplane? A: Output noise is specified at < 5 mV RMS. Backplane noise contribution remains minimal when proper grounding and rack bonding practices are followed.

Field Installation Guidelines

• Mount the LVPS module in a 6HE or 19‑inch VME rack slot with full connector engagement.
• Ensure rack grounding is bonded to the cabinet’s main earth point to minimize noise propagation.
• Maintain separation between detector power cabling and control signal wiring to reduce interference.
• Verify that AC input wiring meets local electrical codes and includes proper strain relief.
• When powering long cable runs, confirm voltage at the load end to ensure compensation settings are adequate.
• Avoid obstructing airflow around the module; thermal buildup can affect voltage regulation.
• Follow GEH‑6632 installation practices for backplane alignment and connector seating.