107
CONTROL MODES
To minimize overshooting, the integrative control part is zeroed as it approaches Set point.
SP
Control period
PID control
Deviation
Process value
Relay out
Relay out
with
0% Dead
Band Gain
Min. On time
Dead Band
mode Low
Figure 42:
PID Control Mode Low, Relay Out with 0% Dead Band Gain
To minimize overshooting, the integrative control part is diminished as it approaches Set point.
SP
Control period
PID control
Deviation
Process value
Relay out
Relay out
with
50% Dead
Band Gain
Min. On time
Dead Band
mode Low
Figure 43:
PID Control Mode Low, Relay Out with 50% Dead Band Gain
