Technical Specifications
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Information Displayed on the Check Screen
The Check screen is used for troubleshooting and displays the operating parameters of the SVI
II ESD including:
Position Indicates the actual valve position in % of valve opening. 0% is
always closed and 100% is open. Because the travel of a valve may
exceed its nominal travel, positions greater than 100% are possible.
Lower Stop The Lower and Upper Stop values are the A/D values measured from
the position sensor at the full travel of the valve. The Lower Stop des-
ignates the lower end of the valve travel. The raw position measure-
ment must always be between these two numbers. These numbers
are useful for troubleshooting problems.
Raw Position The A/D value measured from the pressure sensor 1. This is used for
troubleshooting purposes.
Upper Stop The Lower and Upper Stop values are the A/D values measured from
the position sensor at the full travel of the valve. The Upper Stop des-
ignates the upper end of the valve travel. The raw position measure-
ment must always be between these two numbers. These numbers
are useful for troubleshooting problems.
Current (mA) The value of the input signal in miliamps.
Raw Signal The A/D value measured from the signal sensor. This is used for trou-
bleshooting purposes.
Board Temp (C) The internal SVI II ESD temperature measured in degrees Celsius.
The SVI II ESD also reports the lowest temperature and highest tem-
perature in which it has been operating.
Min Temp (C) This is the minimum temperature in degrees Celsius at which the SVI
II ESD reports it has been operating.
Max Temp (C) This is the maximum temperature in degrees Celsius at which the SVI
II ESD reports it has been operating.
I/P The current D/A value being sent to the I/P that controls the valve
position. This value is used for troubleshooting.
Pressure 1 The SVI II ESD continuously monitors the actuator pressure. It is dis-
played in the user-selected units (psi, bar, or kpa). Pressure 1 is the
actuator pressure for a single acting SVI II ESD.
Raw Pressure 1 The A/D value measured from the pressure sensor 1. This is used for
troubleshooting purposes.
Pressure 2 The SVI II ESD continuously monitors the actuator pressure. It is dis-
played in the user-selected units (psi, bar, or kpa).
Raw Pressure 2 The A/D value measured from the pressure sensor 2. This is used for
troubleshooting purposes.