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3. Key Technical Specifications
| Parameter | Value |
| Manufacturer | ABB (Asea Brown Boveri) |
| Model Designation | AGPS-21C |
| Product ID | 64668064 |
| Replaced Product ID | 3AXD50000131891 |
| Input Voltage Range | 115 / 230 VAC (selectable) |
| Output Voltage | 24 VDC stabilized |
| Application Suitability | ABB Q950 measurement frames and ACS800 series |
| Power Classification | Installation accessory / internal power board |
| Country of Origin | Finland / Sweden |
| Product Dimensions | 4.0 x 25.8 x 26.2 cm |
| Net Weight | 0.22 kg (board only) to 0.76 kg (boxed) |
4. Product Introduction & Supply Chain Strategy
The ABB AGPS-21C (64668064) is a specialized GDR power supply board engineered for ABB Q950 quality control systems and ACS800 drive platforms. It converts AC line inputs of 115 VAC or 230 VAC down to a regulated 24 VDC output, supplying steady logic power to sensitive sensor interface components.
From an inventory perspective, this legacy power board acts as an insurance policy against long repair cycles. Purchasing the AGPS-21C as a New Surplus spare is a key strategy for avoiding lead time variability and the hidden hazards of refurbished parts. Because power supply boards face high thermal loads and capacitor wear, relying on refurbished items risks secondary system failure and unplanned downtime. A verified New Surplus board optimizes the Total Cost of Ownership (TCO) by providing a pristine, unpowered unit with its original expected operating lifespan intact.
5. Installation & Configuration Guide
1.Pre-Installation (Prep & Safety):Enforce lock-out/tag-out safety protocols.
Isolate the incoming AC power supply feeding the drive enclosure or measurement rack. Apply lockout/tagout (LOTO) protocols to prevent accidental energization. Attach a grounded electrostatic discharge (ESD) wrist strap to your arm and clamp it to the metal frame of the enclosure before opening the protective housing.
2.Removal of the Depleted Board:Disconnect input lines safely.
Disconnect the incoming AC lines and output DC terminals, making sure to label each conductor. Loosen the physical standoffs and board-mounting screws that secure the AGPS-21C board. Slide the card out of its mounting brackets without allowing components to scrape against the metal backplate, and immediately place the old board into an static-shielding bag.
3.Installation (Clone & Seat):Match voltage selection jumpers.
Inspect the voltage selection pins or jumpers on the new surplus AGPS-21C board. Ensure they are set to match your incoming voltage source (either 115 VAC or 230 VAC). Align the board with its factory standoffs and tighten the mounting hardware to secure it. Reconnect the wire terminals exactly as documented during the removal phase.
4.Power-On & Commissioning:Verify DC output levels under load.
Check the terminal connections for any short circuits. Restore the AC supply. Use a digital multimeter to measure the DC output terminals to confirm a stable 24 VDC reading. Observe the onboard diagnostic LEDs; a steady indicator confirms proper power regulation and functional status.
- AGPS-21C
- AGPS-21C
6. Firmware/Software Versions & Upgrade Notes
- Hardware Compatibility: The AGPS-21C is a hardware-based power conversion board and does not host field-upgradable microprocessor firmware.
- System Revisions: This board is designed to replace older legacy part numbers, including the obsolete 3AXD50000131891 part ID. It installs directly into existing frames without modification to the host software.
- Component Settings: Ensure that any monitoring circuit breakers or upstream fuses are rated precisely to match the initial inrush current of this board to prevent nuisance trips during power startup cycles.
7. Frequently Asked Questions (FAQ)
What is the exact physical condition of this AGPS-21C power board?
This is a Brand New Surplus unit. It has never been installed, never been pulled from an active system, and is not a refurbished board. It is original factory stock sourced directly from unused spare inventories and has undergone visual and electrical quality checks.
Why should I choose New Surplus over a cheaper refurbished power board?
Power supply boards use electrolytic capacitors that degrade with heat and age. A refurbished board often uses older, heat-stressed components that look clean on the outside but are prone to premature failure. Buying a New Surplus card protects your plant against sudden component failure and secures a reliable 10-to-15 year operating life.
How do I configure the input voltage settings for this board?
The AGPS-21C supports dual input voltages of 115 VAC or 230 VAC. Before turning the power on, you must manually position the onboard configuration jumpers to match your system’s incoming utility voltage. Running the board on 230 VAC while jumpered for 115 VAC will destroy the input circuitry.
Does this board support hot-swapping while the system is under load?
No. You should never attempt to hot-swap or replace the AGPS-21C power board while the host cabinet is energized. Doing so creates an electric arc hazard and can immediately damage the downstream logic cards or system processor backplane.
What kind of warranty coverage is provided with this surplus part?
We provide a comprehensive 1-year replacement warranty on this New Surplus AGPS-21C power board. If any functional issues arise during normal operating parameters, we will ship a replacement unit or issue a refund if stock has been exhausted.
