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OIM AI-7X82 V2.0 Page 5 of 9
AUTO
TUNE
Enable
This parameter will be prompted only if selected control action is PID.
If Enabled, this parameter will be prompted if user press Up & Down keys
Simultaneously for 3Sec.
If Disabled, this parameter will not be prompted if user press Up & Down keys
Simultaneously for 3Sec.
LOWER
SET
POINT
LIMIT
o
0 C
Sets the minimum limit for set point adjustment. It can be set from minimum
specified range of selected sensor to HSPL value.
HIGHER
SET
POINT
LIMIT
o
400 C
Sets the maximum limit for set point adjustment. It can be set from LSPL value to
maximum specified range of selected sensor.
PROCESS
VALUE
OFFSET
o
0 C
Function of this parameter is to add/subtract a constant value to the measured PV
to obtain Final PV for control applications. This parameter value needs to be
altered for one of the following reason : -
(i) To compensate for known thermal gradient.
(ii)To match the display values with another recorder or indicator measuring the
same PV.
INPUT
FILTER
1
The controller is equipped with an adaptive digital filter which is used to filter out
any extraneous pulses on the PV. The filtered PV Value is used for all PV
dependent functions. If the PV signal is fluctuating due to noise, increase the filter
time constant value.
CONTROL
MODE
FOR O/P 1
PID
User can select between PID or ON-OFF action algorithm to be adopted for
output.
HEAT
CONTROL
LOGIC
FOR O/P 1
User can select heating logic in which OP1 will remain ON till PV < SP.
(PV increases when output is ON.)
User can select cooling logic in which OP1 will remain ON till PV > SP.
(PV decreases when output is ON.)
This parameter will be prompted only if selected input is RTD or RTD.1 and is
used for BOD application. Here OP1 acts as Heating control & OP2 as Cooling
control.
OVERSHOOT
CONTROL
POINT
Disable
This parameter will be prompted only if selected control action is PID. Setting this
parameter on higher side will proportionally slows down the rate of rise of PV to
minimize overshoot (this may cause delay to reach SP). Setting on lower side will
proportionally or disabling this parameter will increase the rate of rise of PV
(which may cause overshoot). Disable this option if delay is not required to reach
SP.
RAMP
RATE
Disable
This parameter will be prompted only if OCP (over shoot control point) is disabled.
When enabled, User can set the desired RAMP rate in USER list.
When disabled, this parameter will not be prompted in USER list.
LOWER
DISPLAY
UPPER
DISPLAY
PARA
METER
DESCRIPTION
DEFAULT
INPUT
TYPE
This parameter value is set according to the type of sensor (Thermocouple or RTD
input) connected to the controller's input terminals.
o
0.3 C
±
Pt-100(RTD 0.1)
o
-
100.0 ~ 450.0 C
o
0.1 C
Pt-100(RTD)
o
-100
~
450 C
o
1 C
o
0
~
1800 C
TC - B
o
1 C
Sensor Type
Accuracy
Resolution
Range
1
±
o
C
1
±
o
C
