Rockwell Automation 1440-VDRP06-00RH XM-160/161/162 Direct Vibration Module - Manual (Page 74)

Publication GMSI10-UM025C-EN-P - August 2010
66 Configuration Parameters
Relay Parameters The Relay parameters control the operation of the relays. The Direct Vibration
modules do not have an on-board relay. The relays are added when an
Expansion Relay (XM-441) module is connected to the Direct Vibration
modules. The XM-160, XM-161, and XM-162 support two Expansion Relay
modules for a total of eight relays. Use these parameters to configure which
alarm(s) the relay is associated with, as well as the behavior of the relay.
Startup Period The length of time that the Threshold Multiplier is
applied to the threshold. The startup period begins
when the setpoint multiplier switch is reopened
(push button disengaged or toggle switch flipped to
off). Enter a value from 0 to 1092 minutes,
adjustable in increments of 0.1
minutes.
Threshold Multiplier The action to take when the setpoint multiplier
switch is closed (push button engaged or toggle
switch flipped to on) and during the startup period
once the switch is reopened. The module applies the
multiplier to the alarm thresholds during this time to
avoid false alarms at resonance frequencies.
Note: The multiplication may have the opposite of
the intended effect under certain circumstances. For
example, if the Condition is set to "Less Than" and
the thresholds are positive, then multiplication of the
threshold values increases the likelihood of the
measured value being within the alarm range.
Therefore, you may want to set Threshold
Multiplier to zero to disable the alarm during the
startup period.
Enter a floating point value in the
range of 0 to 10.
Enter 0 (zero) to disable the alarm
during the startup period.
Alarm Parameters
Parameter Name Description Values/Comments
IMPORTANT
A relay can be defined, regardless of whether or not it is
physically present. A non-physical relay is a virtual relay.
When a relay (physical or virtual) activates, the module
sends a Change of State (COS) message to its master,
which acts on the condition as necessary. An XM-440
Master Relay Module can activate its own relays in response
to a relay (physical or virtual) activation at any of its slaves.