FUJI
ELECTRIC
E
C
PV
OUT2
ALM1
ALM2
::::
::::
8. 8. 8.
8.
8. 8. 8. 8.
SEL
SV
::::
OUT1
Control/Monitoring
Control Panel
The various elements on the control panel are described in the sections below. Advanced WinChill
Communications are available through the 9-pin connector. To run the unit without the software
running, set the Station Number (Stno on the controller parameters, see Parameter Values) to 15.
Turn the unit off, set the ON/OFF/SET switch to the ON position, cycle the breaker and in
approximately 10 seconds, the unit will start.
PYX4 Microprocessor
The microprocessor (Figure 1) becomes operative when the breaker is closed and five seconds
after the SET/OFF/ON switch is placed in either the ON or SET position.
Figure 1
The microprocessor receives a temperature signal from the RTD (Resistance Temperature
Detector) located in the process cooling line leaving the evaporator. This temperature value is
displayed in the PV (Process Value) readout on the controller.
The SV (Setpoint Value) readout has two distinct functions.
!
To establish the basic program of the microprocessor.
!
To set the control temperature of the fluid out of the evaporator.
Changing the Process Temperature Setpoint
Change the Setpoint Value by pressing the (>) key on the controller keypad. SV will change to a
leading zero display. Continue pressing (>) until the appropriate digit flashes. Press (
v
) to
increase the value or press (
w
) to decrease the value. Continue pressing (>) until the last digit
flashes. Press (>) one more time and all leading zeroes extinguish. This locks in the Setpoint
Value.
Caution:
Never program in a Setpoint Value of less than -45
E
C.
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