Allen Bradley 1336-PB-SP5A Precharge PC Board Assembly

FAQ

Q1: What is the Allen-Bradley 1336-PB-SP5A used for?
A: The 1336-PB-SP5A is a precharge control board used inside Allen-Bradley 1336 drives to control DC bus charging during startup and reduce excessive inrush current.

Q2: Which drives are compatible with the 1336-PB-SP5A?
A: It is designed for compatible 460 VAC Allen-Bradley 1336 drive systems, including 1336 PLUS, 1336 PLUS II, 1336 FORCE, and 1336 IMPACT series drives.

Q3: What is the main function of the precharge circuit?
A: The precharge circuit gradually charges the DC bus capacitors during power-up, preventing high startup current that could damage capacitors, rectifiers, and power switching components.

Q4: Is the 1336-PB-SP5A a complete variable frequency drive?
A: No. It is only a replacement PCB assembly installed inside compatible Allen-Bradley 1336 drive units.

Q5: What problems may indicate a failed precharge board?
A: Typical symptoms include drive startup failure, DC bus charging faults, excessive inrush current, inability to enable the drive, or damage to related DC bus components.

Q6: What are the dimensions and weight of the 1336-PB-SP5A?
A: The approximate dimensions are 170 × 125 × 70 mm, and the weight is approximately 0.89 kg. Actual values may vary slightly depending on hardware revision and packaging.

Q7: Can the 1336-PB-SP5A replace other precharge boards?
A: Replacement should only be performed after confirming the drive voltage rating, frame size, board part number, PCB revision, and original application requirements.

Q8: What should be checked before installing the 1336-PB-SP5A?
A: Verify the drive model, disconnect and discharge the DC bus voltage, inspect connectors and mounting points, confirm the replacement board specification, and follow proper electrical safety procedures before installation.

1336-PB-SP5A Allen Bradley

We will use wear-resistant cartons to seal the boxes, and take photos for your confirmation before sealing. We will pack the boxes only after confirmation.

For express delivery, we will use DHL, UPS, TNT, FedEx and EMS.

Please rest assured that we have a deep cooperation with express delivery companies and can ensure that your goods are delivered to you in good condition.