1900/27 Vibration Monitor Operation and Maintenance Manual
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2.4 Configuration Switch Settings
Use the 6-position configuration switch on the front panel of the monitor to
program the relay time delays, the alert relay alarm condition, English or metric
units, and to initiate a monitor self test.
2.4.1 Relay Time Delay
Relay time delay is the amount of time that the vibration must continuously
exceed the setpoint before an alarm occurs. Table 2.4 shows the relay time delay
switch settings.
TABLE 2.4: Relay Time Delay Settings
Switch 1 Switch 2 Time Delay
Off Off 3 seconds
Off On 5 seconds
On Off 10 seconds
On On 15 seconds
2.4.2 Alert Relay Alarm Conditions
Alert relay alarm settings let you configure the Alert relay to be driven by the
following 4 conditions: the Alert setpoint, the Alert setpoint logically OR'ed with
NOT OK, NOT OK, or the Danger setpoint. If you configure the relay to be driven
from NOT OK or the Danger setpoint, the Alert setpoint is no longer used. Table 2.5
shows the Alert relay drive condition settings.
Table 2.5: Alert Relay Alarm
Condition Settings
Switch 3 Switch 4 Alert Drive
Off Off ALERT
Off On ALERT OR NOT OK
On Off NOT OK
On On DANGER
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