Principle Of Operation - Emerson TopWorx 4310 Instruction Manual

Instruction Manual
October 2009
ENTER ALERT TRIGGER VALUE
ALERT
SETUP
CONFIGURE
Figure 20. Setting the Cycle Counter in AMS Wireless
Configurator and AMS Device Manager
To clear accumulated cycle value select Reset Cycle
Counter.
D Power status indicates the status of the power
module voltage.
Field Communicator
Select Online, Service Tools, Variables, then Power
Module Voltage to view the power status. Refer to
the Service Tools menu tree shown in figure 17.
AMS Wireless Configurator or AMS Device
Manager
Go to Service Tools to view the power module
voltage status on the Variable tab. Refer to figure 21.
The 4310 wireless position monitor
also includes a power module voltage
warning and a critical power failure
alert. These can be viewed through the
1420 gateways web interface. Look
under Monitor then Point Data and
select your device from the available
HART tags.
There are two field (true or false) that
can be mapped into Modbus, OPC, or a
DeltaV system:
D TAG.BATTERY WARNING
GETTING LOW and
D TAG.CRITICAL POWER FAILURE
RESET CYCLE
COUNTER
APPLY
Note
4310 Wireless Position Monitor
VARIABLES
Figure 21. Power Status in AMS Wireless Configurator and
AMS Device Manager

Principle of Operation

The basic concept of the electronic positioner can be
understood by visualizing a magnet mounted to a
piece of equipment that either has a rotating motion
or sliding linear movement. The device has the
ability to detect the position of the magnet and
transmit wirelessly the relative position. The 4310 is
similar to a limit switch on a valve but without wires.
The 4310 is a communicating micro−processor
based instrument that includes the use of a Hall
sensor to detect the relative position (on, off, or
partially open) of a magnet that is attached to
equipment (e.g. process control valve, either
automated or manual). The 4310 position monitor is
a battery powered device with the power modules
located on the inside of the device. The primary
means of communication is wireless, conforming to
the WirelessHART communication standard. The
device also supports the use of wired
communication using the HART protocol to connect
to a handheld device such as the 475 or 375 Field
Communicator. The handheld connection is used for
initial device configuration (i.e. network set−up). The
device includes a local user interface (LCD display
and two pushbuttons) primarily used to calibrate or
define the span of position being measured. No
ground point is required. The device contains an
integrated omni−directional antenna.
VARIABLES TAB
POWER
MODULE
VOLTAGE
SERVICE TOOLS
19