PLATINUM
TM
Series Controllers User
’s
Guide
M5451
Omega Engineering | www.omega.com
60
Reference Section: Programming Mode (PRoG)
7.5.5
Relative Cool Gain (PRoG > PId > rCg)
Select the Relative Cool Gain (
rCg
) parameter. The cooling output will be adjusted by this
multiplier. Valid only for Reverse/Direct (
RVRS/dRCt
) control mode. Relative Cool Gain is
useful to restore heat/cool balance when heater and cooler of different power ratings are
used.
Set the desired value.
Confirm the value.
7.5.6
Control Offset (PRoG > PId > oFst)
Select the Control Offset (
oFst
) parameter. Control Offset is a manual adjustment to the PID
output power. The parameter is effective when the PID output power is non-zero. Control
Offset is useful when the output power needs to start from a value other than zero (i.e: PWM
delivery to a motor fan)
%On = %PID + Offset
Set the desired value.
Confirm the value.
7.5.7
Deadband (PRoG > PId > dEAd)
Select the Dead band/Overlap band (
dEAd
) parameter. A positive value sets a deadband and a
negative value sets an overlap band. Deadband parameter creates a band on both sides of
control setpoint in which the same output power is maintained. Overlap band parameter
creates a band on both sides of control setpoint in which both reverse and direct outputs that
are controlled by the same PID channel are activated.
Set the desired value.
Confirm the value.
7.5.8
Low Output Clamping Limit (PRoG > PId > %Lo)
Select the Low Output Clamping Limit (
%Lo
) parameter. This parameter sets the lower limit of
%Power applied to an analog output, or %On time for PWM (pulse width modulated) control
used with the other output types. (The default setting is -100.0%.)
Set the desired value.
Confirm the value.
