cbthans Posted March 29, 2016 Share Posted March 29, 2016 Running Turbo PMAC on GEO Brick controlling a Dover stage. One of the 5 stages we have is having problems. All stages are running the same code. An error happens approximately once every 10 minutes of continuous motion. The error is Amplifier Fault Error (Bit 3), Open Loop Mode, Also the Abort Deceleration in progress bit comes on. There seems to be no resistance when moving the stage by hand. Is there any diagnostics we can run, other error bits or anything else to narrow down what the problem source is? Motors, Scales, Wiring, Physical Obstruction, Bad Tuning??? Link to comment Share on other sites More sharing options...
Highland Controls Posted March 30, 2016 Share Posted March 30, 2016 The LED display will show the Fault code. Link to comment Share on other sites More sharing options...
JeffLowe Posted March 31, 2016 Share Posted March 31, 2016 The LED display will show the Fault code. Yes, the Dover amplifier (Glentek) has a seven segment display for faults. Also check if ix57 and ix58 are set for i2t protection. These also look like amplifier faults. Link to comment Share on other sites More sharing options...
Highland Controls Posted March 31, 2016 Share Posted March 31, 2016 If this is a GEO Brick, then there should not(probably not) be a 3rd party drive. Link to comment Share on other sites More sharing options...
cbthans Posted March 31, 2016 Author Share Posted March 31, 2016 Thanks for the response i157 (ix57) = 0, i158 (ix58) = 0 And LED Is: 1C Link to comment Share on other sites More sharing options...
Highland Controls Posted March 31, 2016 Share Posted March 31, 2016 You must have a Geo Brick LV. That is an overcurrent fault Link to comment Share on other sites More sharing options...
cbthans Posted March 31, 2016 Author Share Posted March 31, 2016 Is there a way to see what the peak current is on a non fatal move? Is the peak current value always 20amp or is it configurable? (Maybe our setting is wrong) This way we can tell if we are always close to the limit or that we might have an intermittent gore cable problem that is shorting out a motor coil at certain locations. Link to comment Share on other sites More sharing options...
cbthans Posted March 31, 2016 Author Share Posted March 31, 2016 Yes thanks I saw that 1C is a Axis 1 Over Current: Indicates that channel n ‘s peak current has exceeded the permissible limit (20 Amps) Link to comment Share on other sites More sharing options...
Omron Forums Support Posted April 4, 2016 Share Posted April 4, 2016 You might want to use an example in the Geo Brick User manual called "Calculating Motor Current Output Example". It will work with the Geo Brick LV, but note that the Max ADC values are different: 1.6925 A, 6.770 A, and 33.85 A for 0.25A/0.75A, 1A/3A, and 5A/15A Bricks, respectively. Link to comment Share on other sites More sharing options...
Recommended Posts