Thermo Scientific ULT-80, Installation & Operation Manual

Page: 41 / 62

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Setup Loop
The Setup Loop is used to adjust the controller's PID parameters; select the
internal (1) or external (2) sensor; select a remote setpoint source; set the
high/low temperature limits; and select and configure RS-232 operation.
Enter the Setup Loop from the Operator's Loop by pressing and holding the
NO key, then press the NEXT ENTER key. Use the YES/NO keys to adjust
the values. Press the NEXT ENTER key twice to accept the new value.
While in the Setup Loop, if any key is not pressed during a one-minute time
span, the controller will automatically return to the Operator's Loop tempera-
ture display.
NOTE: If the circulator exceeds either temperature limit, the appropriate error
message will flash, see page 16. The circulator will not shut down (unless the
temperature exceeds the high temperature safety setting, see page 16). You
will also receive an error code if the optional external sensor is selected but it
is not installed.
Figure 1 Operator's Loop
XXX.X = Reservoir Fluid Temperature
SP = Setpoint
Operator's Loop
When the controller is first powered up it enters the Operator's Loop, displaying
reservoir fluid temperature. Press the NEXT ENTER key to view the setpoint.
SP displays the controller setpoint. The display will flash between SP and the
actual setpoint number. Use the YES/NO keys to change the setpoint value.
Once the desired setpoint is displayed, press the NEXT ENTER key twice.
NOTE: If the bath is controlled via RS-232 communications, the setpoint can
not be changed from the keypad.
XXX.X
SP
NO
HOLD
GO TO
SETUP
LOOP
NEXT
ENTER
NEXT
ENTER
NEXT
ENTER
NEXT
ENTER