Table of Contents
Advertisement
FX2N-2LC Temperature Control Block
5.2
Two-position control
When the proportional band (P) value is set to "0.0", the FX
trol.
In two-position control, the control output (MV) is set to ON when the measured value (PV) is
larger than the temperature set value (SV) or OFF when the measured value (PV) is smaller
than the temperature set value (SV).
When the adjustment sensitivity (dead zone) is set, repetitious turning ON/OFF of the output
around the temperature set value (SV) can be prevented.
However, if the adjustment sensitivity (dead zone) is set to a large value, upward/downward
fluctuation becomes large accordingly. If the adjustment sensitivity (dead zone) is set to a
small value, chattering (drastic repetitious turning ON/OFF) may be caused by small oscilla-
tions of measured values.
Temperature
set value (SV)
Operation output
value (MV)
ON OFF
ON
-2LC performs two-position con-
2N
Adjustment sensitivity (dead zone)
* The adjustment sensitivity is equally given
to the upper portion and the lower portion
of the temperature set value (SV).
OFF
Time
Introduction of Functions 5
5-3
5
Advertisement
Table of Contents
