3 6 Heat-Cool Control
3 6 Heat-Cool Control
The Heat-Cool Control can use one of
combinations of control modes. Setup of parameters for each control
mode are shown in the following table.
6
The Heat-Cool Control can use one of
combinations of control modes. Setup of parameters for each control
mode are shown in the following table.
6
Control Modes
Heat
Uses
Cool
Uses
Setup Values
OUT1 OUT2 O1HY OFST PB1 TI1 TD1 CPB
A1FN
or
A2FN
A1MD
or
A2MD
A1HY
or
A2HY
Heat : ON-OFF
Cool : ON-OFF
Heat : ON-OFF
Cool : P ( PD )
Heat : ON-OFF
Cool : PID
Heat : P ( PD )
Cool : ON-OFF
Heat : PID
Cool : ON-OFF
Heat : PID
Cool : PID
OUT1
OUT1
OUT1
OUT1
ALM1
or
ALM2
OUT1
OUT1
OUT2
REVR
DIRT
DIRT
REVR
REVR
REVR
NONE
COOL
=0
DE.HI
or
PV1.H
DE.LO
or
PV1.L
DE.LO
or
PV1.L
DE.HI
or
PV1.H
DE.HI
or
PV1.H
NORM
NORM
NORM
NORM
NORM
=0
=0
=0
=0
=0
=0
=0
=0
=0
=0
: Not Applicable
: Not Applicable
: Adjust to meet process
requirements
: Adjust to meet process
requirements
Table 3.1 Heat-Cool Control Setup
Table 3.1 Heat-Cool Control Setup
NOTE :
Other Setup Required :
The ON-OFF control may result in excessive and unwanted overshoot and undershoot in the process. The
P(or PD) control will result in a deviation of process value from the set point. A PID setup is recommended for a
Heat-Cool control to produce a stable and zero offset process value.
O1TY, CYC1, O2TY, CYC2, A2SP, A2DV
O1TY & O2TY are set in accordance with the type of OUT1 & OUT2 installed. CYC1 & CYC2 are also selected according
to the output 1 type ( O1TY ) & output 2 type ( O2TY ).
Generally, select 0.5 ~ 2 sec. for CYC1, if SSRD or SSR is selected for O1TY or 10 ~ 20 sec. If a relay is used for O1TY.
CYC1 and CYC2 are ignored if their respective output types are of a linear type.
NOTE :
Other Setup Required :
The ON-OFF control may result in excessive and unwanted overshoot and undershoot in the process. The
P(or PD) control will result in a deviation of process value from the set point. A PID setup is recommended for a
Heat-Cool control to produce a stable and zero offset process value.
O1TY, CYC1, O2TY, CYC2, A2SP, A2DV
O1TY & O2TY are set in accordance with the type of OUT1 & OUT2 installed. CYC1 & CYC2 are also selected according
to the output 1 type ( O1TY ) & output 2 type ( O2TY ).
Generally, select 0.5 ~ 2 sec. for CYC1, if SSRD or SSR is selected for O1TY or 10 ~ 20 sec. If a relay is used for O1TY.
CYC1 and CYC2 are ignored if their respective output types are of a linear type.
Examples:
Heat PID+Cool ON-OFF :
Heat PID+Cool PID :
self-tuning
auto-tuning
manual tuning
Set OUT1= REVR, A1FN or A2FN= PV1.H, A1FN or A2MD=NORM, A1HY or A2HY=0.1,
PB1=0, TI1=0,TD1=0, and set appropriate values for O1TY and CYC1.
set OUT1=REVR, OUT2=COOL, CPB=100, DB=-4.0, PB1=0, TI1=0, TD1=0, and set appropriate
values for O1TY, CYC1, O2TY, CYC2.
If you have no idea about a new process, then use
program to optimize the PID values by selecting YES for
SELF to enable the self-tuning program .See section 3-18 for self-tuning description. You can use the
program for the new process or directly set the appropriate values for PB1, TI1 & TD1 according to the historical records
for the repeated systems. If the control behavior is still inadequate, then use
to improve the control. See
Section 3-20 for manual tuning.
Examples:
Heat PID+Cool ON-OFF :
Heat PID+Cool PID :
self-tuning
auto-tuning
manual tuning
Set OUT1= REVR, A1FN or A2FN= PV1.H, A1FN or A2MD=NORM, A1HY or A2HY=0.1,
PB1=0, TI1=0,TD1=0, and set appropriate values for O1TY and CYC1.
set OUT1=REVR, OUT2=COOL, CPB=100, DB=-4.0, PB1=0, TI1=0, TD1=0, and set appropriate
values for O1TY, CYC1, O2TY, CYC2.
If you have no idea about a new process, then use
program to optimize the PID values by selecting YES for
SELF to enable the self-tuning program .See section 3-18 for self-tuning description. You can use the
program for the new process or directly set the appropriate values for PB1, TI1 & TD1 according to the historical records
for the repeated systems. If the control behavior is still inadequate, then use
to improve the control. See
Section 3-20 for manual tuning.
45
ALM1
or
ALM2
ALM1
or
ALM2
NONE
NONE
NONE
NONE
ALM1
or
ALM2
ALM1
or
ALM2
DB