green LED is blinking, pressing
PB2
will decrement the set point
by 1°F. Do not press any pushbutton for 5 to 10 seconds or until the
green LED stops blinking. The controller will use the last display
for the leaving liquid temperature set point and will go back to
normal operation.
REMOTE PANEL DISPLAY
A remote panel display is available that will allow access to all the param-
eters that the controller uses. The Remote Panel Display can be used as a
set point tool in production, a diagnostic tool in the field or as a permanent
readout device on the controller. A five foot cable is included.
Plug the remote display into the telephone jack (J9) on the controller. The
following is a list of readings available:
POSN
Number of steps the electric expansion valve is open
SUPH
Superheat read by controller
LQTP
Temperature read by the leaving liquid temperature sensor (-50
to 102°F.)
PRES
Pressure read by the transducer (0-153 psi absolute or gauge)
TOUT
Temperature read by the suction temperature sensor
(-50 to 102°F.)
TSAT
Saturated Temp. Based on suction pressure and refrigerant
selected
COOL, PMDN
COOL when in normal operation, PMDN when in pump down
R22, 404A, R422, R507
R22 for refrigerant R22, 404A for refrigerant R404A, R422 for
refrigerant R422D, and R507 for refrigerant R507.
LARG, SMAL, MEDM
LARG if the EEV used is an SEI-50 or larger. SMAL if the
EEV used is smaller than an SEI-30. MEDM if the EEV used is
a SEI-30.
SHSP
Superheat set point (5 to 30°F.)
LQSP
Leaving liquid Temperature set point (-40 to 100
°F)
GAIN
Proportional gain set point. Number of steps per degree that
liquid temperature is above or below its set point (0 to 255 steps
per degree). Default is 44 for LARG setting, 22 for MEDM set
-
ting, and 10 for SMAL setting.
INTG
Integral set point. Number of seconds the controller waits to
update the reference valve position. (1 to 120 seconds). Default
is 50 seconds.
DERI
Derivative set point. Number of steps the controller opens or
closes the valve based on the rate the leaving liquid temperature
is changing (0 to 255 seconds). Default is 20.
Pressing
ENTER
will toggle display between one of the displays
described above and the numeric value read for that particular display.
Pressing
UP
will scroll through the menu from
POSN
to
SUPH
, etc.
Pressing
DOWN
will scroll through the menu the opposite way.
POSN MODE
Press and hold
UP
button and
ENTER
button for 5 seconds to put the
valve in manual valve position. The number of steps open will be dis-
played and the 1000’s digit will blink.
Pressing the
UP
button will open the valve 1000 steps.
Pressing the
DOWN
button will close the valve 1000 steps.
Pressing the
ENTER
button will change the flashing digit from 1000’s
digit to the 100’s digit.
Pressing the
UP
button will open the valve 100 steps.
Pressing the
DOWN
button will close the valve 100 steps.
Pressing the
ENTER
button will change the flashing digit from 100’s digit
to the 10’s digit.
Pressing the
UP
button will open the valve 10 steps.
Pressing the
DOWN
button will close the valve 10 steps.
Pressing the
ENTER
button will change the flashing digit from 10’s digit
to the 1’s digit.
Pressing the
UP
button will open the valve 1 step.
Pressing the
DOWN
button will close the valve 1 step.
Pressing the
ENTER
button will change the flashing digit from 1’s digit
to the 1000’s digit.
Press and hold
UP
button and
ENTER
button for 5 seconds will put the
controller in normal control. The digits will stop blinking.
SHSP MODE
Press and hold
UP
button and
ENTER
button for 5 seconds to enable the
superheat set point to be changed. The set point is displayed and the 100’s
digit will blink.
Pressing the
ENTER
button will change the flashing digit from 100’s digit
to the 10’s digit.
Pressing the
UP
button will increase the set point by 10 degrees.
Pressing the
DOWN
button will decrease the set point by 10 degrees.
Pressing the
ENTER
button will change the flashing digit from 10’s digit
to the 1’s digit.
Pressing the
UP
button will increase the set point by 1 degree.
Pressing the
DOWN
button will decrease the set point by 1 degree.
Pressing the
ENTER
button will change the flashing digit from 1’s digit
to the 100’s digit.
Press and hold
UP
button and
ENTER
button for 5 seconds will save the
set point. The digits will stop blinking.
LQSP MODE
Press and hold
UP
button and
ENTER
button for 5 seconds to enable
the leaving liquid temperature set point to be changed. The set point is
displayed and the 100’s digit will blink.
Pressing the
UP
button will increase the set point by 100 degrees.
Pressing the
DOWN
button will decrease the set point by 100 degrees.
Pressing the
ENTER
button will change the flashing digit from 100’s digit
to the 10’s digit.
Pressing the
UP
button will increase the set point by 10 degrees.
Pressing the
DOWN
button will decrease the set point by 10 degrees.
Pressing the
ENTER
button will change the flashing digit from 10’s digit
to the 1’s digit.
Pressing the
UP
button will increase the set point by 1 degree.
Pressing the
DOWN
button will decrease the set point by 1 degree.
Page 2
Figure 2
