The 690+ bus voltage is extremely high on power up. Why?
a. This can mean the Y-caps are creating a voltage multiplier.
i. This can be a result of the 690+ being used as an AFE (Active Front End)
(Typically when drives are going to be used in an AFE Application they are ordered with the 007 option)
ii. This can occur if the drive is connected to a transformer with Open-Delta or Corner-Grounded Delta windings
b. The Y-Caps can be disconnected
i. General modification notes on the removal of links:
1. Remove the component/link by desoldering or by cutting it back to the board at both ends, close to the printed circuit board, so that arcing cannot occur,
2. Disconnect the Y capacitors from DC+ and DC- to earth
(The location of the jumpers/resistors to be removed varies for each frame size)
3. Specific modification information for each frame size can be obtained by contacting Parker Product Support (704-588-3246 or firstname.lastname@example.org)
Removal of the Ycapacitors invalidates conformance to the EMC standards stated on the Declaration of Conformity in the product manual. The CE mark remains on the product as this is for product electrical safety.