Model 200AU-NOy Option Manual Addendum
4. Press the "up-arrow" under the digit or the "down-arrow" at the left to scroll
the digit to the desired value,
5. Repeat for the other two digits,
6. Press the ENTER button.
Select PV with the PV/SV button to observe the actual temperature.
The temperature controller has been programmed at the factory and should not need to be altered
under normal usage.
Indications that would require re-programming are:
• Failure / replacement of controller
• Replacement of thermocouple element
• Controller’s loss of PID parameters leading to instability of the temp setpoint.
In the event that the control parameters are changed or in the event that a new controller is
installed, it must be reprogrammed to suit the thermal characteristics of the instrument. The
controller includes an Autotuning feature, which can be used to properly set the PID factors. To
start Autotune procedure:
• Press Sel until A7 (AT) is displayed
• Press Data until value = 1 (enable Autotune)
• While Autotuning, the decimal point will blink.
• NOTE: During the procedure, it is normal for the temp to overshoot up to 100°C.
• When the decimal point LED turns off, Autotune is complete. No further adjustment
should be necessary.
Table 6.1 – Temperature Controller Programming Guide
PRESS DISPLAY ACTION
SEL X2
DATA P PROP BAND UP/DOWN SET TO 5.0 (ENTER)
SEL
DATA i INTEGRAL SET TO 50
SEL
DATA d DERIVATIVE TIME SET TO 5
SEL
DATA 7C CYCLE TIME
30 DEFAULT SET TO 15 (FOR FAST SYSTEM)
SEL HYS HYSTERESIS SET TO 0.3
SEL 5rr RAMP RATE SET TO 0
SEL
DATA A7 AUTOTUNE SET TO 1 = ON
SEL LOC LOCK 0 = OPEN 1 = LOCKED
2 = SV ONLY OPEN
02808 Rev. E Page 33