47
BIFFI FAIL SAFE ELECTRIC ACTUATORS, MODEL EFS2000V4
InstructIon and operatIng Manual
The following data may be viewed:
Closing torque Opening torque
Breakout % Breakout %
Breakout reference % Breakout reference %
Peak run % Peak run %
Peak run reference % Peak run reference %
Ending % Ending %
Ending reference % Ending reference %
Date of the last stroke Date of the last stroke
Date of reference (same as opening) Date of reference (same as closing)
View procedure
• Move the local selector to OFF and then
simultaneously press OPEN and STOP within
20 sec (see chapter ‘Local controls, entering
view and set-up mode). Select the language
according to the instructions (see ‘Entering
the view mode’). When the message displayed
is ‘VIEW MODE OK?’ press YES. Press NO to
scroll through the list of available menus and
press YES to select the Maintenance menu.
• Press NO to scroll through the list of routines
and press YES to select torque profile.
• Press YES to scroll through the list of values.
14.4.3 Torque curve
The torque curve routine gives important
information on the actuator operating
conditions in comparison with a previously
memorized reference torque curve. It can
be used to perform a detailed analysis of a
change in the process conditions. During a
full valve stroke in opening or closing, the
ICON2000 measures the torque values relevant
to every 1% of position variation. At the end
of the stroke the collected 101 values (one
torque value every 1% of position change) are
saved in the ICON2000 memory together with
the time and date of strokes, main voltage,
motor temperature, temperature inside the
electronics compartment and temperature
inside the terminal board compartment. Up to
100 curves in opening and 100 curves in closing
can be saved. When a new curve is available
the oldest one is cancelled and the new one is
memorized. The above data are updated at the
end of every full valve stroke. Data relevant to a
partial stroke are discharged.
The function ‘set curve reference’, in the Set-up
menu, Maintenance (chapter I), allows saving
the full set of data relevant to 1 off 100 ‘torque
curves’ in the ‘torque curve reference’. The
‘torque curve reference’ will not be updated
until a new ‘set curve reference’ command is
entered. The user can compare the last 100
torque curves in opening and closing relevant
to the last 200 valve strokes with the torque
curve reference saved before.
Below is the list of saved data for each opening
or closing curve:
• Date: date of the valve stroke
• Time: time of the valve stroke
• Temperature: temperature (°C) inside the
electronics compartment during the valve
stroke
• Term. temp: temperature (°C) inside the
terminal board compartment during the valve
stroke
• Motor temp: temperature of the electrical
motor (°C) during the valve stroke
• Main voltage: main voltage supply (V) during
the valve stroke
• Closing/Opening time
• Torque 0: torque value in percentage of
the nominal torque/thrust stated in the
Nameplate menu. In opening ‘Torque 0’
corresponds to position 0% and in closing
‘Torque 0’ corresponds to position 100%
• Torque 100: torque value in percentage
of the nominal torque/thrust stated in the
Nameplate menu. In opening ‘Torque 100’
corresponds to position 100% and in closing
‘Torque 100’ corresponds to position 0%
The amount of data to be viewed is large and
the local display can only visualize one value
at a time. To use this function we suggest
utilizing the features available with PDA’s and
PC through Bluetooth
®
wireless connection.
The figure below shows an example of graph
available on PDA or PC screen, showing the
reference opening torque curve and the latest
opening torque curve.
To Next Page
Loading...
