dave wrote: > Hi all, > > Backround: at fest '08 I bought a panasonic ( MSMA ) driver and ac servo > ( 40W ) from Steve White. > > Finally, I'm getting around to trying it. Hooked it up as per the online > docs. ~150 pgs of .pdf > > So far I've connected 110 power to terminals 1 (blk), 3, (white), and > gnd (green terminal). Also 1 is tied to r and 3 is tied to t. > > Servo motor is tied to U, V, W and ground and the encoder cable is in > place. > > Problem: no response. ie. the unit does not appear to fire up at all. > No display, no response to 'set' or 'mode'. > > Any experience, recommendations or ideas would be appreciated. > The Yaskawa drives I worked with needed a 24 V enable signal into an opto-coupled input to enable the drive. I'll bet these Panasonic drives were aimed directly at current Yaskawa customers, and may follow their protocols pretty closely. I'm a little surprised there's no display, though.
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