Allen-Bradley 1440-SDM02-01RA, User Manual, Page: 86 / 168

86 Rockwell Automation Publication 1440-UM001D-EN-P - September 2016
Chapter 2 Configure the XM-124 Standard Dynamic Measurement Module
Relay Parameters
The Relay parameters control the operation of the onboard relay, as well as the
relays on the Relay Expansion (XM-441) module. Use these parameters to
configure which alarm the relay is associated with, as well as the behavior of the
relay.
Speed Range Enable Controls whether the selected alarm is enabled only when the
measured speed is within a machine speed range. Enter the machine
speed range in Speed Range High and Speed Range Low.
Important: The tachometer must be enabled
(Pulses Per Revolution set to 1 or more) and a
tachometer signal must be provided at the
tachometer input when Speed Range Enable is
enabled.
Important: You cannot enable the Speed Range
parameter when alarm Measurement is set to
‘Speed.’
See page 75 .
Speed Range Low The lesser threshold of the machine speed range. This value must be less
than the Speed Range High value.
This parameter is not used when Speed Range Enabled is disabled.
rpm
Speed Range High The greater threshold of the machine speed range. This value must be
greater than the Speed Range Low value.
This parameter is not used when Speed Range Enabled is disabled.
rpm
Table 15 - Alarm Parameters (Continued)
Parameter Name Description Values/Comments
XM Configuration
Utility EDS File
Check to Enable Enabled
Clear to Disable Disabled
IMPORTANT A relay can be defined, regardless of whether 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.
Table 16 - Relay Parameters
Parameter Name Description Options/Comments
Number (XM Serial Configuration Utility only) Sets the relay to be configured in the XM Serial Configuration Utility. Relay Number 1 is the onboard relay. Numbers 2…5
are either relays on the Expansion Relay module
when it’s connected to the module or virtual relays.
Virtual relays are non-physical relays. Use them
when you want the effect of the relay (monitor
alarms, delay, and change status) but do not need
an actual contact closure. For example, a PLC or
controller monitoring the relay status.
IMPORTANT:
The Relay Installed parameter indicates
whether a relay is a virtual relay or a physical relay
on a module.
Name (XM Serial Configuration Utility only) A descriptive name to help identify the relay in the XM Serial
Configuration Utility. Maximum 18 characters