© Brüel & Kjaer Vibro ● S1079330.002 / V04 ● █ Page 145 of 188
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Brüel & Kjaer Vibro │ Instruction
VC-8000 MPS
Content
EN
22 Verification
22.1 Verification Procedure (General)
Follow the steps in this section to verify the operation of the VC-8000.
1. Set the input signal inside the normal operating region (not in alarm).
2. Reset the rack (press the reset button) to clear any latched alarm conditions.
3. Raise (for over alarms) or lower (for under alarms) the input amplitude until the measurement
crosses the Alert set-point.
4. Wait the configured alarm time delay.
5. Verify the channel entered the Alert condition. There will be an event in the Alarm Event List
and the alarm will be annunciated on the display.
6. Press the reset button. Since the input is still outside the normal operating region, the bar
graph will still indicate Alert.
7. Continue increasing (for over alarms) or lowering (for under alarms) the signal amplitude until
the measurement crosses the Danger set-point.
8. Wait the configured alarm time delay.
9. Verify the channel entered the Danger condition. There will be an event in the Alarm Event
List and the alarm will be annunciated on the display.
10. Press the reset button. Since the input is still outside the normal operating region, the bar
graph will still indicate Danger.
11. Return the signal amplitude to the normal operating range.
12. If the alarms are configured as “non-latching” the alarms should clear, and an exit event will
appear in the Alarm Event List. If the alarms are configured as “latching”, press the reset
button to clear latched alarms. After reset the exit event will appear in the Alarm Event List
with the time stamp of the ‘reset’ action.
Alarm set-points have hysteresis (dead-band) of approximately 1.5% of full-scale. The
alarm will continue to be annunciated until the measurement is back inside the normal
operating region by at least the hysteresis value.
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