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Model 200EU-NOy Option Manual Addendum
6.1.4 Temperature Controller Setup
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
SEL END RETURNS TO SV. SET TO 315 (315
o
C SET VALUE)
NOTE:
DO NOT SET THE TEMPERATURE (SV) HIGHER THAN 320
o
C.
05386 Rev. A 30