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Siemens AG
Entry type: FAQ Entry ID: 109763511, Entry date: 01/31/2019
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Damaged Pins on D-Type Connector of G120C, G120X and G120CU with BOP-2

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Attaching the BOP-2 incorrectly can lead to a bent pin on the D-Type connector, please use the following to eliminate the possibility of damage to the inverter.

Question:
Why does the BOP-2 attachment cause damage to the D-Type connector on the inverter?

Answer:
The BOP-2 fit is a precision connection and any debris and/or wires under the BOP-2 can lead to a misalignment and in turn causes damage to the pin of the connector.


Fig 1 – Shows wires in the way of the BOP-2 connection.
 


Fig 2 – Illustrate the correct attachment method compared with the incorrect method with a wire trapped under the BOP-2.
 


Fig 3 – Illustrated the mounting of a BOP-2 with misalignment.
 
Please note:
Improper removal of BOP-2 unit
Alternatively if the installer is unable to exert the required force to press the clip down then the BOP-2 unit can be removed in an incorrect manner. The BOP-2 can be removed by rotating it in an anti-clockwise direction. Fig 4 below shows how the unit can be removed incorrectly. 

Fig 4 – Illustrated the incorrect removal of the BOP-2 using the anti-clockwise rotation.

 Removing the unit as displayed in Fig 4 will lead to deformation of the D sub connector shroud on the G120C unit along with a bent/broken bottom pin.

The damage that can be caused by incorrect attachment and/or removal is shown in the following:


Fig 5 – Illustrated the damage caused to the D-Type connector and Pin by incorrect attachment and removal.

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