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Article #: KA-03791
Published: May/29/2025
Last reviewed: Jul/8/2025
Correct removal and replacement of the Network Module Controller (NMC) on Panduit Power Distribution Unit (PDU)
Introduction
Below are the steps including images to remove the controller to inspect it and the ribbon cable connecting the module to the PDU.
Basic troubleshooting includes the removal, inspecting the network module, the port and connecting pins for damage, inspecting the ribbon cable for damage or kinks, and the connection of the cable into the PDU itself.
Purpose
If the PDU NMC stops responding, either across the network, or local buttons not functioning/blank screen , and a standard soft reset (see G5 manual for instructions), does not recover the unit , then the next step is to remove/reseat the NMC controller. Similarly, if this process does not recover the unit then the NMC will need to be swapped out with a replacement following the process below (please contact systemsupport@panduit.com to talk about RMA replacement).Requirements
The only requirement is a T10 Torx driver necessary to remove two screws mounting the Network Module Controller (NMC) into the PDU
The screws are held in with retaining washers.
Identifying the iNC, NMC to the correct PDU
Though the NMC will connect to the other G Model PDU, these are not interchangeable, and the module will likely be damaged beyond repair. The differences are subtle but easily identified
G5 Network Module G6 Network Module
Similar in appearance, a notable difference is the RJ45 port on the G5 NMC is labelled Ethernet and the G6 Serial
Unrecoverable Damage due to incompatibility
Though they fit the same, the network controllers are not interchangeable
Damage on the G5 Network Controller due to connecting to a G6 Power Distribution Unit (PDU)
Damage to a G6 NMC once connected to a G5 PDU
Procedure
- The Network Module Controller is hot swappable and can be removed without disrupting power to the connected devices
- The controller is held in place by two T10 Torx screws with retaining washers
- Unscrew two screws to allow the controller to be removed for inspection
- Controller may be rotated to accommodate overhead or underfloor power. If
rotating controller YOU MUST DISCONNECT the ribbon cable to prevent
damage to the ribbon cable - Disconnect the controller from the ribbon cable to inspect the pins and cable for damage
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- Reseat the ribbon cable connectors, assuring no kink in the ribbon and firmly and completely reconnected. The connector on the controller is keyed to assure correct replacement. The connector on the PDU side has a tab that locks it into place. You should notice a click when reconnecting
- Reset the controller into the PDU making sure the ribbon does not kink and tighten back in place with the Trox driver
- Once reconnected, the network controller will return to operational, else please raise a support case by emailing systemsupport@panduit.com
Troubleshooting
- Remove the network controller to inspect for damage
- Disconnect the ribbon cable to inspect it, the connector, the pins on the controller and the PDU if necessary
- Reseat the ribbon to assure secure connectivity to the PDU and network controller and test functionality on the controller
- If issue remains, swap the controller onto another like model PDU to identify the issue remains on the controller. This helps isolate the issue to the controller, the ribbon cable or the PDU
- When swapping, it is critical the test PDU is the same generation to avoid damaging the controller as noted above
- Install the controller back into the PDU to test functionality
- Contact support for additional assistance as necessary
Panduit.com SystemSupport@panduit.com 1-866-721-5302 Article: KA-03791