IS2020RKPSG2A | Mark VIe Rack Power Supply | OEM New

Description

Product Introduction

The GE IS2020RKPSG2A is a VMEbus rack power supply module from the Mark VIe Speedtronic series, purpose-built to provide regulated DC power to the Mark VIe control system backplanes. This board converts the plant’s nominal 125 VDC bus (typically from battery-backed DC supplies) into the clean, regulated voltages required by processor boards, I/O modules, and communication interfaces. The G2A revision features improved efficiency, enhanced diagnostics, and higher current capacity compared to the G1A variant.

What sets the RKPSG2A revision apart is its robust input filtering, wide input voltage tolerance (100–150 VDC), improved efficiency (91% typical), and enhanced diagnostics including voltage monitoring, current monitoring, temperature sensing, and predictive health monitoring. The board delivers 5 VDC at up to 22 A for logic circuits, ±12 VDC at 2.5 A for auxiliary circuits, and 24 VDC at 3.5 A for field I/O—all with less than 40 mV ripple under full load. Advanced features include input transient protection, output overvoltage and overcurrent protection, and comprehensive status monitoring. For system integrators requiring a reliable power solution with improved performance and diagnostic capabilities, this board is the direct OEM solution.

Key Technical Specifications

Key Selling Points & Differentiators

• Enhanced Current Capacity: Higher 5 V current (22 A vs. 20 A), higher auxiliary currents—supports more heavily loaded backplanes.
• Improved Efficiency: 91% efficiency—less heat generation than G1A, improves reliability.
• Predictive Health Monitoring: Capacitor aging estimation enables proactive maintenance planning.
• Multiple Output Rails: 5 V, ±12 V, and 24 V outputs—supplies all Mark VIe backplane power requirements from a single module.
• Wide Input Range: Accepts 100–150 VDC, covering typical plant battery voltages and fluctuations without output dropout.
• Comprehensive Diagnostics: Voltage, current, temperature, and health monitoring with predictive indicators.
• Comprehensive Protection: Foldback current limiting, overvoltage clamping, input transient protection, and thermal shutdown.
• Lower Ripple: <40 mV peak-to-peak—improved stability for sensitive processor and analog I/O boards.
• Live Test Verified: Every board undergoes a 48-hour burn-in at full rated load with cycling input voltage from 100 V to 150 V. We log output voltages, ripple, thermal performance, and diagnostic thresholds.
• 90-Day Warranty: Covers functional defects. If it fails under normal operating conditions, we replace it. No restocking fee for verified returns.
• OEM Traceability: All units come from audited surplus channels with original GE anti-static bags and serialized labels. No clones, no refurbished units with unknown repair history.
• Pre-Shipment Capacitor Reform: For units stored more than 12 months, we perform a controlled capacitor reforming procedure to prevent inrush failures.

Frequently Asked Questions (FAQ)

Q: What is the difference between IS2020RKPSG1A and IS2020RKPSG2A?

A: The G2A has several improvements: higher 5 V current capacity (22 A vs. 20 A), higher auxiliary currents (2.5 A vs. 2 A, 3.5 A vs. 3 A), higher efficiency (91% vs. 90%), lower ripple (<40 mV vs. <50 mV), and predictive health monitoring. The G2A also requires Mark VIe Toolkit v6.5 or higher vs. v6.0 for G1A. If you need improved performance and diagnostics, choose G2A.

Q: What is the difference between IS2020RKPSG2A and IS2020RKPSG2B?

A: The G2B revision typically includes enhanced diagnostics or minor performance improvements. The G2A is the base revision for the improved performance series. Check your existing board—if you have G2B, verify compatibility. In most cases, G2A and G2B are interchangeable, but confirm with the board’s firmware requirements.

Q: What is the difference between IS2020RKPSG2A and IS2020LVPSG1A?

A: The RKPSG2A provides lower current capacity (5 V @ 22 A vs. 25 A, ±12 V @ 2.5 A vs. 3 A, 24 V @ 3.5 A vs. 4 A) and lower efficiency (91% vs. 91%—same efficiency). The RKPS is designed for standard configurations with moderate power requirements. The LVPS is designed for heavily loaded configurations requiring higher current capacity. Choose RKPS for standard systems, LVPS for high-density systems.

Q: What is the predictive health monitoring feature?

A: The RKPSG2A continuously monitors capacitor aging and estimates remaining capacitor life based on temperature and operating hours. This enables proactive maintenance planning—you can replace the power supply during scheduled maintenance rather than reacting to unexpected failure. The health status is reported through the Mark VIe Toolkit.

Q: What is the benefit of the 91% efficiency?

A: Higher efficiency means less heat generation inside the cabinet. For a 437 W power supply, 91% efficiency generates approximately 39 W of heat vs. 44 W for an 89% efficient supply. This 5 W difference can impact cabinet temperature and component life in tightly packed cabinets.

Q: Can I use this board with 24 VDC or 48 VDC input instead of 125 VDC?

A: No. The RKPSG2A is specifically designed for 125 VDC nominal input (100–150 VDC range). Using lower voltages will not produce the required outputs—the converter needs at least 90 VDC to regulate properly. Using higher voltages (above 150 VDC) will damage the input stage. If your plant uses a different DC bus voltage, you’ll need a different power supply variant or an external DC-DC converter upstream.

Q: Is this board hot-swappable?

A: No. The Mark VIe VME backplane does not support live insertion of power boards. You must de-energize the entire rack, wait for all LEDs to extinguish, and discharge the input bus capacitors (use a resistor, not a short). We’ve seen technicians try to pull an RKPS with the rack still powered—it arced across the backplane pins and took out neighboring boards. Don’t risk it.

Q: What is the typical lead time for this part?

A: We stock these on the shelf—usually ship within 24 hours of order placement and payment confirmation. For international orders, add 3–5 days for customs. If you need expedited (overnight air), we can do that, but you’ll need to coordinate with our logistics team for the cut-off time.

Q: Does this board work with both Mark VIe and Mark VIeS (SIL-rated) cabinets?

A: Yes—with a caveat. The RKPSG2A provides the same voltages for both standard and SIL-rated cabinets. However, SIL systems typically require redundant power supplies (two RKPS boards in parallel with diode isolation). The G2A can be used in those configurations, but you must ensure your backplane supports the OR-ing diodes. If your SIL system uses IS220RKPS variants, check the diode configuration first. We can help you verify compatibility if you send us your cabinet model.

Q: What’s your return policy if this doesn’t fix my power-related fault?

A: If the board is electrically functional (passes our QC test) but doesn’t clear your fault, we’ll accept a return within 30 days provided the board shows no physical damage, no blown fuses, and no signs of overvoltage stress. We do charge a 15% restocking fee if the fault was due to a downstream short circuit or incorrect input voltage. We’ll work with you over the phone to diagnose the issue before we ship—our goal is to get you running, not to ship boxes back and forth.

30ESK6 30A FILTERS
323A2357P1 FUSE(5A)
323A2357P21 FUSE(1.5A)