Allen-Bradley 170947/170948 Replacement for PowerFlex 700

Product Overview

Allen-Bradley 170947/170948 Replacement for PowerFlex 700: Smooth Transition & Legacy System Compatibility

When a PowerFlex 700 AC drive goes offline due to a failed Power Stage Interface Board, every hour of unplanned downtime translates directly into production loss. The Allen-Bradley 170947 (also catalogued as 170948, cross-referenced as 129708-02 and M003325108) is the critical gate-driver and power-stage feedback interface that bridges the IGBT power module and the main control board inside the PowerFlex 700 drive family. TOPNLMS maintains verified stock of this board, pre-tested and ready to ship, so your retrofit or emergency replacement can proceed without waiting weeks for an OEM lead time.

Whether you are executing a planned modernization of an aging 1336 PLUS II or 1336 IMPACT drive system, migrating from a legacy 1305 or 1336 FORCE drive, or simply replacing a field-failed board in an existing PowerFlex 700 frame, this guide covers the compatibility considerations, wiring implications, installation space requirements, communication protocol continuity, and procurement assurances you need to make a confident purchasing decision.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful PowerFlex 700 power stage board replacement rarely happens in isolation. In most field scenarios, the 170947/170948 board failure is accompanied by or triggers inspection of adjacent components. During the same maintenance window, engineers typically verify the condition of the PowerFlex 700 Main Control Board (catalog 20-750-ENETR or equivalent communication adapter) and the PowerFlex 700 Gate Driver Board that interfaces directly with the IGBT module stack. If the drive has been running in a harsh environment, the PowerFlex 700 Fan and Capacitor Kit is a prudent co-replacement to extend the refurbished drive’s service life.

For facilities migrating from a 1336 PLUS II or 1336 IMPACT platform, the upgrade path typically involves replacing not just the drive but also the associated 1336-MOD-D2 or 1336-MOD-D3 option modules with their PowerFlex 700 equivalents, such as the 20-COMM-E EtherNet/IP adapter or the 20-COMM-D DeviceNet adapter, ensuring that the new drive integrates cleanly into the existing Logix-based control architecture without requiring PLC program restructuring. The 1203-USB or 1203-SSS programming cable remains the standard tool for parameter backup and drive commissioning via DriveExplorer or Studio 5000 Logix Designer.

In multi-drive control cabinet installations, the PowerFlex 700 DC Bus Conditioner and shared 1321-3R line reactor should be inspected whenever a power stage fault is diagnosed, as bus transients are a common root cause of gate driver board degradation. For I/O-intensive retrofit projects, the 1734 POINT I/O modules mounted in the same panel often require re-mapping when the drive’s DPI communication adapter is upgraded, and the PanelView Plus 7 HMI operator interface may need a parameter screen update to reflect the new drive’s fault code structure. Ensuring that the Allen-Bradley 1606-XLP power supply providing 24 VDC to the control circuit is within specification is a final commissioning checkpoint before returning the drive to service.

Retrofit Guidance FAQ

Q: Is the 170947 a direct drop-in replacement for the 170948?
A: Yes. The 170947 and 170948 are functionally equivalent power stage interface boards used across different PowerFlex 700 frame configurations. Both cross-reference to 129708-02 and M003325108. Confirm your frame size and revision level before installation, but in the vast majority of field cases these two part numbers are interchangeable within the same drive chassis.

Q: Do I need to re-wire the drive after replacing this board?
A: No field wiring changes are required. The 170947/170948 is an internal board connected via the drive’s internal harness. All external power terminals (L1/L2/L3 input, U/V/W motor output) and control terminal wiring remain undisturbed. Follow the PowerFlex 700 Reference Manual (publication 20B-RM001) for torque specifications when re-seating connectors.

Q: Will I lose my drive parameters during the board swap?
A: The drive parameters are stored on the main control board, not the power stage interface board. Replacing the 170947/170948 does not erase parameter memory. As a best practice, back up parameters using a 1203-USB cable and DriveExplorer software before any maintenance intervention.

Q: Is this board compatible with EtherNet/IP and DeviceNet communication?
A: Yes. Communication protocol support is determined by the control board and communication adapter (e.g., 20-COMM-E for EtherNet/IP, 20-COMM-D for DeviceNet), not by the power stage interface board. Replacing the 170947/170948 has no effect on network communication configuration.

Q: Can this board be used in a migration from a 1336 PLUS II to a PowerFlex 700?
A: The 170947/170948 is a PowerFlex 700-specific component. If you are migrating from a 1336 PLUS II, you will be replacing the entire drive unit. This board is the correct power stage interface for the new PowerFlex 700 drive you are installing as the replacement. It is not a retrofit adapter between the two platforms.

Q: What is the physical installation space requirement?
A: The board mounts within the existing PowerFlex 700 drive enclosure using the OEM mounting standoffs. No panel cutout modification or additional DIN rail space is required for a same-frame replacement. For new drive installations in an existing control cabinet, refer to the PowerFlex 700 Installation Instructions (publication 20B-IN006) for frame-specific dimensional data.

Warranty Assurance

Every Allen-Bradley 170947/170948 Power Stage Interface Board shipped by TOPNLMS is covered by a 12-month warranty from the date of shipment. Prior to dispatch, each unit undergoes a functional verification check including visual inspection, connector integrity testing, and cross-reference confirmation against the order SKU. If a board is found to be defective on arrival or fails within the warranty period under normal operating conditions, TOPNLMS will arrange a replacement or refund in accordance with our standard after-sales policy.

Orders are typically processed and dispatched within 1–3 business days from our Xiamen warehouse. International shipments are supported via DHL Express, FedEx International Priority, and UPS Worldwide, with tracking provided upon dispatch. For urgent plant-down situations, please contact our sales team directly to arrange priority handling.

TOPNLMS specializes in industrial automation spare parts procurement for maintenance engineers, MRO buyers, and system integrators who require reliable, spec-verified components with documented sourcing. We do not sell counterfeit or refurbished-as-new parts. All stock is sourced through verified supply channels and stored under appropriate conditions to maintain component integrity.

For technical pre-sales questions, compatibility verification, or bulk order inquiries, contact our engineering sales team before placing your order. We are committed to reducing your system downtime and supporting your retrofit and modernization projects with accurate parts and responsive service.

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