Technical Specifications

Masoneilan Valves ValVue ESD Instruction Manual =| 83
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Device Trip
NOTE If the device is tripped, in Normal, Manual and Setup modes the
setpoint and the control mode are not affected by a device trip,
and as soon as the trip condition is removed (which includes Latch
if configured) the valve goes back to the state prior to the trip.
However, if a process was running at the onset of the trip condition, the valve may also go to
where it was before the process started, or stay at the de-energized stop. This is not true for
Normal mode.
In failsafe and low power the valve must stay at the de-energized stop.
Change Mode
Use the Change Mode button on all ESDVue screens to change the operating SVI II ESD mode.
When selected, you can change the SVI II ESD mode to any of three operating modes:
 Normal - In this mode the SVI II ESD responds to the input signal and positions the
valve accordingly (indicator green).
 Manual - in this mode the valve does not respond to the input signal. Instead it remains
stable in one position which is the position that the valve was in when manual mode
was entered or a new position selected by you (by changing the setpoint in the Monitor
screen).
 Setup - In this mode you can set calibration and configuration parameters.
Additionally, you can run response time tests, step response tests, and PST controller
signatures (indicator yellow).
Whenever you leave the Normal mode, a warning appears (Figure 72).
1. Click OK to continue the mode change.
Figure 72 Leaving Normal Mode Warning
Whenever you return to Normal mode, a warning appears (Figure 73).
2. Click OK to continue the mode change.