Configuration Switch Settings; Relay Time Delay; Alert Relay Alarm Conditions - GE Bently Nevada 1900/27 Operation And Maintenance Manual

1900/27 Vibration Monitor Operation and Maintenance Manual

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.

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.
Switch 3
10
TABLE 2.4: Relay Time Delay Settings
Switch 1 Switch 2
Off
Off
On
On
Table 2.5: Alert Relay Alarm
Condition Settings
Switch 4
Off Off
Off On
On Off
On On
Time Delay
Off 3 seconds
On 5 seconds
Off 10 seconds
On 15 seconds
Alert Drive
ALERT
ALERT OR NOT OK
NOT OK
DANGER