Flowserve DFC17 Manual de usuario Pagina 17
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Digital Electronic Controller DFC17 Installation, Operation and Maintenance Instructions 17
On the menus below, use the DN key to move from one
parameter to the next one in sequence. When calibration
is completed, press and hold the SEL key for three
seconds to return to the main Calibration Mode menu (the
Pr1L parameter). Release and then press the SEL key
again for three seconds to return to the Run Mode.
Note: When either the thermocouple type or units is
changed, the upper range limit will be changed to the
maximum upper limit as described earlier. The lower
range limit is always fixed at 0°C or 32°F.
Thermocouple Types and Temperature Ranges
For a controller with a thermocouple module, different
types of thermocouples can be used to measure process
temperature. Some types have wider available
temperature ranges than others. The maximum range
available for the type used is shown in the table at right.
A narrower range can be specified in the Calibration
Mode. Narrowing the range will increase the resolution of
the process temperature measurement and will allow for
better setpoint control.
Thermocouple Range Range
Type Lower Limit Upper Limit
E 0°C 350°C
32°F 650°F
J 0°C 500°C
32°F 900°F
K 0°C 550°C
32°F 999°F
T 0°C 400°C
32°F 750°F
4.2.11 Key Sequences for Calibrating the Cycle Time
Press DN to select the cycle time parameter Cyt.
Press SEL + UP to perform the cycle time measurement.
Flow Control Division
Worcester Actuation Systems
Step Display Procedure
tyPE Press SEL and UP to change the thermocouple type. When SEL and UP are pressed, the type will begin
flashing. Pressing the UP or DOWN keys will change the display to another type. When the correct value
is flashing, press SEL to lock in the selection.
Unit Press SEL and UP to change the temperature units. When SEL and UP are pressed, the units will begin
flashing. Pressing the UP or DOWN keys will change the units between degrees Fahrenheit and Celsius.
When the correct units are flashing, press SEL to lock in the selection.
rn9U Press SEL and UP to change the temperature range upper limit. When SEL and UP are pressed, the
upper limit will begin flashing. Pressing the UP or DOWN keys will change the upper limit to another
value. When the correct range value is flashing, press SEL to lock in the selection. The upper limit of the
range will not be able to be set below 100°C or 212°F.
RdcU Press SEL and UP to enter the voltage display mode. Be sure a thermocouple simulator is attached in
place of the thermocouple. Simulate the upper limit temperature and adjust the gain potentiometer on the
module such that the voltage is between 4.200 and 4.700 volts on the display. Press the SEL key to lock
in the upper limit voltage.
rn9L The value given with this display is the lower temperature limit and is shown to remind the technician of
the temperature to use for the simulator. This value is fixed and not programmable.
RdcL Press SEL and UP to enter the voltage display mode. Be sure a thermocouple simulator is attached in
place of the thermocouple. Enter the lower limit temperature (either 0°C or 32°F) in the simulator.
The
resulting voltage reading will be displayed. Do NOT adjust the gain potentiometer in this step.
Press the
SEL key to lock in the lower limit voltage.
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