Rockwell Automation 1440-VST02-01RA XM-120 Eccentricity Module - Manual (Page 10)

Publication GMSI10-UM010C-EN-P - May 2010
2 Introduction
The Eccentricity module includes a single on-board relay, expandable to five,
making it a complete monitoring system. It can operate stand-alone, or it can
be deployed on a standard or dedicated DeviceNet network where it can
provide real-time data and status information to other XM modules, PLCs,
distributed control systems (DCS), and Condition Monitoring Systems.
The Eccentricity module can be configured remotely via the DeviceNet
network, or locally using a serial connection to a PC or laptop. Refer to
Chapter 3 for a list of the configuration parameters.
Eccentricity Module
Components The Eccentricity module consists of a terminal base unit and an instrument
module. The XM-120 Dynamic Measurement Module and the XM-940
Terminal Base are shown below.
Figure 1.1 Eccentricity Module Components
• XM-940 Dynamic Measurement Module Terminal Base - A DIN rail
mounted base unit that provides terminations for all field wiring
required by XM Dynamic Measurement and Eccentricity modules.
• XM-120 Dynamic Measurement Module - The XM-120 mounts on the
XM-940 terminal base via a keyswitch and a 96-pin connector. The
XM-120 contains the measurement electronics, processors, relay, and
serial interface port for local configuration.
XM-940 Dynamic Measurement Module Terminal Base Unit
Cat. No. 1440-TB-A
XM-120 Dynamic Measurement Module
Cat. No. 1440-VST02-01RA
IMPORTANT
The XM-441 Expansion Relay module may be connected
to the XM-120 module via the XM-940 terminal base.
When connected to the module, the Expansion Relay
module simply “expands” the capability of the XM-120 by
adding four additional epoxy-sealed relays. The module
controls the Expansion Relay module by extending to it the
same logic and functional controls as the on-board relay.