Control/Monitoring
To power the controller without powering the chiller, place the SET/OFF/ON switch in the SET
position. The digital display will light in about 5 seconds. The number next to PV is the actual
process fluid temperature. The number next to SV is the Setpoint Value (desired) temperature.
To view the program depress the SEL key until LoCT appears in the PV section of the controller
and 0002 appears in the SV section. Change 0002 to 0003. Continuing to depress the (
w
) key
will bring up the remainder of the program. Toggle through the program using the (>), (
v
), and
(
w
) keys to change the appropriate digits until the display reads as desired. To change a
parameter value, press (>). The value in PV will begin flashing. While flashing, the value may
be changed by pressing (
v
) to increase the value or by pressing (
w
) to decrease the value.
When the correct value is visible on the display, press SEL to lock in the value. Return to the
PV/SV displays will be automatic after a minute, or by pressing and holding the SEL key for a
few seconds.
Fault Display
If UUUU appears on the PV display, one of the following has occurred:
!
RTD burnout.
!
RTD disconnected.
!
Input is more than 5% of the full range above the high limit (Sv-h, see below in program
listing).
If LLLL appears on the PV display, one of the following has occurred:
!
RTD short circuit.
!
RTD disconnected.
!
Input is more than 5% of the full range below the low limit (Sv-L, see below in program
listing).
PYX Parameter Values
Press and hold the SEL key to get to the PYX controller parameter menu. Use arrow buttons to
change values. Display returns to PV/SV after about one minute if parameters are not being
changed. Set the following values:
LoCt
3
All parameters user changeable
oUT1 ?
Cannot be set - anything but 0.0 indicates control output #1 is
energized
Mod
AUTo
Mode - Auto or Manual
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