Vibration Research Corporation VibrationVIEW, Manual, Page: 153 / 333

Test Definition 140
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disables this limit. This safety limit prevents the drive output from increasing unless some response is
measured on the accelerometer. Refer to "
How to Tune Sine Controller Parameters " for details on
how to determine a suitable value for your system.
The startup Output Threshold parameter defines the base output voltage on the control loop when a
test is starting.
The startup Max Output parameter defines the maximum output voltage allowed from the control loop
when a test is starting. If the channel 1 drive signal output exceeds this value when starting a test, the
test will abort. We recommend setting this at about 150% of the normal start up voltage required.
The running Max System Gain parameter defines the maximum allowed ratio of output volts to
measured acceleration while a test is running. Setting this value to a large number (e.g. 100 volts/G)
disables this limit. This is a safety limit that restricts the drive output from increasing unless some
response is measured on the accelerometer. Refer to "
How to Tune Sine Controller Parameters "
for details on how to determine a suitable value for your system.
The running Max Output parameter defines the maximum output voltage allowed from the control loop
while the test is in Run mode. If the channel 1 output ever exceeds this value, the test will abort. We
recommend setting this at about 150% of the normal running maximum.
4.2.6 Channels tab
Sine Define Channels tab
Clicking the "Channels" tab in the Test..Edit Test Settings dialog box accesses this dialog box.
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