Specifications
Reference Manual
MHM-97408, Rev. 2
June 2008
CSI 9420
2-2
NOTE:
Prior to sensor connection, it is normal to see alerts related to bias failure.
These alerts will go away once the sensor(s) is installed correctly.
CONNECTION TO THE
WIRED HART
INTERFACE
Unless you purchased your CSI 9420 pre-configured from the factory, it is
necessary to connect to the wired HART interface to define the credentials
required for the device to communicate on your wireless network. If desired,
other device configuration such as sensor type(s) and alert thresholds may
also be defined at this time. The wired HART connection is located on the
bottom of the terminal block in the rear chamber of the device. It is a two-wire,
polarity-independent connection, and it is indicated by “COMM” on the
terminal block label (Figure 2-1).
NOTE:
The power module must be installed to enable the wired HART interface.
NOTE:
The wired HART interface is intended only for configuration. Dynamic
variable, i.e., measured vibration parameters, are not updated when
communicating on the wired interface.
NOTE:
The CSI 9420 does not communicate simultaneously on both the wired and
wireless HART interfaces. As a result, wireless connectivity is lost when you
connect to the wired HART interface for configuration, and configuration
changes are not reflected in a wireless host until connection has been
re-established. To avoid loss of synchronization, it is recommended that hosts
relying on the wireless link be disconnected when communicating with the
device on the wired interface. For example, if you are viewing a configuration
screen in AMS Device Manager through a wireless link, and you leave this
screen open while making changes with your 375, you will have to exit AMS
Device Manager and then re-open it after the wireless connection has been
restored in order to see the changes.
Figure 2-1. CSI 9420 Terminal
Block