Field Notice: FN - 63915 - M12 Connector Internal O-Ring Might Become Dislodged on Industrial Ethernet Series 2000 IP67 Switches - Replacement Might Be Required
November 26, 2014
THIS FIELD NOTICE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND
OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTY OF MERCHANTABILITY. YOUR USE
OF THE INFORMATION ON THE FIELD NOTICE OR MATERIALS LINKED FROM THE FIELD NOTICE
IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS FIELD
NOTICE AT ANY TIME.
Initial Public Release
Affected Cisco Industrial Ethernet 2000 (IE2000) IP67 switches might exhibit an issue where the connector internal O-ring becomes dislodged from the connector upon removal of the protective dust cap. The removal of this internal O-ring does not allow any liquid ingress into the unit enclosure itself but it is possible for liquid ingress into the connector contacts if this O-ring becomes dislodged, which might impact product functionality.
Cisco has found this issue to be present at its manufacturing sites. It is also possible that units already in the field have O-rings that will be dislodged via the removal of a dust cap that secures the connectors.
This problem can arise from dust caps that are over-tightened in the initial product assembly. When the dust cap is over-tightened, it makes contact with the internal O-ring and over compresses it. The combination of this over compression, time, and temperature/humidity fluctuations during storage/transit can contribute to the internal O-ring lightly bonding to the dust cap.
Once this internal O-ring becomes lightly bonded to the dust cap, there is a possibility that it will become dislodged from the connector upon removal of the dust cap.
Perform the visual inspection steps as described in the Problem Identification section. If you discover that an O-ring on an IE2000 switch is missing or has been dislodged and the switch is no longer deemed to be IP67 compliant (due to the missing O-ring), then the solution is to obtain a hardware replacement for the affected switch. Note that the inventory within MFG and Service might still exhibit the same issue, so be careful when you remove the dust caps and verify that the O-rings are still present.
Problem Identification (Visual Inspection)
There are two methods to visually inspect whether an O-ring has been dislodged from the IE2000 switch connector:
- Inspect the dust cap.
Bad: O-Ring Has Bonded to the Dust Cap
Good: Dust Cap Does Not Have an O-Ring Bonded to It
- Inspect the connector on the IE2000 switch (a flashlight might help illuminate the inside of the connector shell).
Bad: O-Ring is Missing From the Connector
Good: O-Ring is Present
For More Information
If you require further assistance, or if you have any further questions about this field notice, contact the Cisco Systems Technical Assistance Center (TAC) by one of these methods:
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