Filter
Top Products
Model T200U-NOy Option Manual Addendum
07303C DCN6646 33
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 the Autotune procedure:
1. Press SEL until A7 (AT) is displayed
2. Press Data until value = 1 (enable Autotune)
While Autotuning, the decimal point LED 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 7 Temperature Controller Programming Guide
PRESS DISPLAY ACTION
SEL
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 15
SEL
DATA
AL LOW ALARM SETP
SET TO 300
SEL
DATA
AH HIGH ALARM SETP
SET TO 330
SEL
DATA
7C CYCLE TIME
SET TO 2 (FOR FAST SYSTEM)
SEL
HYS HYSTERESIS
SET TO 0.3
SEL
LOC LOCK
0 = OPEN 1 = LOCKED
2 = SV ONLY OPEN
NOTE: DO NOT SET THE TEMPERATURE (SV) HIGHER THAN 320
o
C.