Technical Specifications

Masoneilan Valves ValVue ESD Instruction Manual =| 125
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Button Lock
The SVI II ESD comes with an optional local display and buttons for data entry. Use these
buttons to perform basic SVI II ESD setup without the need for ESDVue or a handheld. It may,
however, be desirable after initial setup to lock the buttons so that the SVI II ESD parameters
cannot be inadvertently changed from the buttons. Several level of locks are provided:
 Allow Local Buttons (level 3): Buttons on the SVI II ESD are enabled.
 Lock Out Local Cal. - Config. (level 2): You can use the buttons to perform operations in
normal operating mode and manual mode, but not in configure or calibrate mode.
 Lock Out Manual/Setup Mode (level 1): You can examine variables in normal operating
mode but may not put the valve in manual or setup mode (and therefore cannot get to
calibrate or configure modes).
 Lock Out All Buttons (level 0): The buttons are disabled.
Fault Settings
You can configure how position errors are handled. A position error occurs when the valve
position differs from the requested position (from the input signal in normal operating mode
or the manual setpoint in manual mode) by more than the parameters. When this occurs, a
status flag is set which is reported during the next HART message only that a flag is set is
reported.
After you have adjusted all the Fault Settings parameters click in the checkbox, beside Enable
to activate.
Fault Settings Options
On the Configure screen you can set:
Position Error Band Use this to define the error band, or the percentage of valve travel,
that the requested position is allowed to vary from the actual posi-
tion. The Position Error Band must be between 0.5% and 199%. If you
set a value for Position Error Band outside the range an error mes-
sage appears (Figure 101).
Figure 101 Position Error Band Error Message