Tuning - Thermo Scientific FD1530M Installation And Operation Manual

Note:
Furnace must be at ambient
temperature before starting a tune.
"Stat" and "Sp.rr" must be set to OFF or
"tunE" will not initiate.
Note:
Tune has completed when "tunE"
stops flashing on display.
S
INGLE
20° above your working temperature to provide
protection for your workload. In addition to over
temperature protection, units containing a single
setpoint controller w/OTP feature a mechanical OTP
relay device, which disconnects power from the
elements in an alarm condition.

Tuning

This controller incorporates a self-tuning feature, which
determines the optimum control parameters for the
best temperature accuracy with your load and setpoint.
Use this feature the first time you use your furnace and
each time you change either your setpoint or the type
of load you are heating. Thermo Fisher Scientific
recommends you use this feature to provide the best
temperature accuracy the controller can attain. To use
the tuning feature:
1. Start tuning with the process at ambient
temperature. This allows the tuner to calculate
the low cutback and high cutback values
more accurately.
2. Adjust the setpoint to your desired value.
3. Press the SCROLL button until display reads,
"A.TUNE."
4. Press the UP or DOWN button to select, "on."
5. Press the PAGE button to return to the HOME
DISPLAY. The display will alternately flash
between "tunE" and the HOME DISPLAY while
tuning is in progress.
6. The controller will then turn the heating on and
off to induce an oscillation. When the
measured value reaches the required setpoint
the first cycle will end.
7. Tuning will be complete after two oscillation
cycles and then the tuner will turn itself off.
8. Normal control function will resume after the
controller calculates tuning parameters.
S M /OTP
ETPOINT ODEL W
15