Difference between revisions of "Granity user guide/Testing"

Revision as of 21:31, 8 September 2016

This tab serves following purposes:

• Running repeating test sequence on motor
• Capturing reference signal & feedback graphs from drive

See also:

• Drive fault handling

Test stimulus generator

Test stimulus as numeric parameters and it's graphical representation

Test stimulus generator is a way to feed a repeating setpoint signal to the drive without having any other physical signals supplied. Test stimulus generates a square waveform with user specified amplitudes and timing.

The waveform generated is specified by 4 parameters:

Short GUI name	GUI name	Description	How to use
TSP1	Target setpoint 1	The first setpoint level	Adjust the value and observe the right side value conversion to the real world units such as amperes or millimeters.
TSD1	Delay 1	The active duration of the first setpoint	Set the duration of the first setpoint lenght.
TSP2	Target setpoint 2	The second setpoint level	Adjust the value and observe the right side value conversion to the real world units such as amperes or millimeters.
TSD2	Delay 2	The active duration of the second setpoint	Set the duration of the second setpoint length.
TSE	Enable test stimulues	Control test stimulus feed	Tick this checkbox to instantly start feeding test stimulus to the drive. Before ticking ensure that setpoints are set to safe levels and always be prepared stop motor safely if unexpected motion happens.
Example where TSD1=0.1s TSD2=0.5s TSP1=1000→0.18A TSP2=-500→-0.09A

Jogging

Set Abs or Absolute set TSPx button set the TSP1 or TSP2 value immediately as setpoint.

Set Inc or Increment by TSPx button does the same as Set Abs, but instead of setting absolute value, setpoint is being incremented. I.e. if TSP1=100 and click 5 times Set Inc, then setpoint value becomes 500.

Set zero setpoint button resets setpoint to 0. Remember, if you need quick stop, rather use hotkey Esc to disable drive, or press physical E-stop button if wired.

Capture & graphs

Capture controls

Options are:

• [TSR] Sample rate - choose the sampling rate of the signals. The higher sampling rate used, the higher level detail will be captured (good to observe sharply changing edges of signal) but at the same time lenght of recorded capture will be shorter. Lower sample rate loses some detail, but gives longer capture duration.
• Capture trigger dropbox - choose one of the following:
  • Capture instantly - Start capture button starts capture immediately
  • Capture in fault - Start capture button waits until drive faults and begins capture at the moment of fault occurring
  • Capture on setpoint change - Start capture button waits until setpoint is modified
  • Capture on setpoint change in positive direction - Start capture button waits until setpoint is modified in positive direction (capture not occurring if setpoint value is reduced)
• Continuously repeating capture - if ticked, capture will be repeating continuously. Useful with test stimulus generator.

Capture signals selection

Tick the checkboxes to choose which signals to capture and display on the graph. The more signals selected, the less the capture duration will be. I.e. if one chooses 4 signals instead of 2, the time of capture will reduce to 1/2.

Device state

Devices state updates continuously while connected and shows status & fault register bits as well as state of physical I/O lines and setpoint value.

Status

Readings

Fault register

Troubleshooting

• Fault location helps to identify the source of faults if nonzero

Read next Servo motor tuning guide