3500/42 Operation and Maintenance
Maintenance
155
Verification Screen Setup - Velocity
Run the Rack Configuration Software on the test computer. Choose Verification
from the Utilities menu and choose the proper Slot number and Channel number
then click on the Verify button.
Note
If the Timed OK Channel Defeat is enabled, it will take 30 seconds for a
channel to return to the OK status from not OK. If OK MODE is configured for
latching, press the RESET button on the Rack Interface Module (RIM) to return
to OK status.
The following table directs you to the starting page of each maintenance section
associated with the Velocity Channels.
Section
Number
Topic
Page Number
5.1.8.2
Test Alarms - Direct
156
5.1.8.3
Verify Channel Values - Direct
158
5.1.8.4
Verify Filter Corner Frequencies
159
5.1.8.7
Test OK Limits
164
5.1.8.2
Test Alarms - Velocity
The general approach for testing alarm setpoints is to simulate the Velocity
signal with a function generator and power supply. The alarm levels are tested
by varying the output from the test equipment and observing that the correct
results are reported in the Verification screen on the test computer. It is only
necessary to test those alarm parameters that are configured and being used.
The general test procedure to verify current alarm operation will include
simulating a transducer input signal and varying this signal:
1.
to exceed over Alert/Alarm 1 and Danger/Alarm2 Setpoints, and
2.
to drop below any under Alert/Alarm 1 and Danger/Alarm 2 Setpoints, and
3.
to produce a nonalarm condition.
When varying the signal from an alarm condition to a nonalarm condition, alarm
hysteresis must be considered. Adjust the signal well below the alarm setpoint
for the alarm to clear.
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