Default levels for configurable device alerts
Table 2-6:
Parameter
Advisory
Maintenance
Failed
Level
Enabled
Level
Enabled
Level
Enabled
Accelerometer
Bias
N/A
N/A
N/A
N/A
< 2 V or > 3 V
Yes
Supply Voltage
< 6.0 V
No
< 5.7 V
Yes
< 5.3 V
Yes
Notes
•
The supply voltage measurement is made under load conditions. The supply voltage may
read differently with the CSI 9420 versus other Emerson transmitters or multimeters.
•
Prior to sensor connection, it is normal to see alerts related to bias failure. These alerts go
away when the sensor is installed correctly.
•
When any measured process parameter (Velocity, PeakVue, or Temperature) exceeds the
configured Advisory, Maintenance, or Failed threshold, this causes an “Advisory” indication
that you can view from AMS Device Manager (or in another graphical host). This indicator
itself does not set a status bit.
2.1.7
Publishing mode
The CSI 9420 can publish in either of two modes: optimized or generic (default).
Optimized mode uses less power by combining a large amount of information into a single
command. In this mode, only the four standard process variables (PV, SV, TV, and QV) are
published at the specified update interval and cached in the Smart Wireless Gateway.
When values are cached in the gateway, it is not necessary to wake the device for the host
system to be able to read the variables. The other variables are still available, but any
request to read one of them wakes the device and consumes power.
Generic mode publishes all the process variables the device can produce. This mode
requires three publish messages, which requires approximately 5% more power.
If you are only trending measurements mapped to PV, SV, TV, and QV, use optimized
mode. If you are trending additional variables, use generic mode.
2.1.8
Update rate
The default update rate is 60 minutes. This is the maximum (fastest) recommended
update rate. You can change this at commissioning or at any time through AMS Device
Manager, a Field Communicator, or the Smart Wireless gateway web server. You can set
the update rate from 1 minute to 1 hour.
Note
If the device uses a power module, and is configured to publish at the fastest allowable update rate
(once per minute), the power module is expected to last only about 2-3 months.
For faster update rates, if your application allows it, use an external DC power option.
Configuration
16
MHM-97408, Rev 15
Summary of Contents for CSI 9420
Page 4: ......
Page 10: ...Revision numbers in AMS Device Manager Figure 1 2 Introduction 4 MHM 97408 Rev 15 ...
Page 60: ...PeakVue spectrum Figure 2 35 Configuration 54 MHM 97408 Rev 15 ...
Page 92: ...Setup 86 MHM 97408 Rev 15 ...
Page 134: ...Product certifications 128 MHM 97408 Rev 15 ...
