i
4
OIM Px-X18
e
V2.1 Page 4 of 5
LOWER
DISPLAY
UPPER
DISPLAY
PARA
METER
DESCRIPTION
DEFAULT
CONTROL
LOGIC
FOR O/P
HEAT
This parameter will be prompted only if selected control mode is ON-OFF.
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 control mode is ON-OFF.
CONTROL
MODE
FOR O/P 1
PID
User can select between PID or ON-OFF action algorithm to be adopted for output.
INPUT
FILTER
4
Controller is equipped with an adaptive digital filter which is used to filter out any
extraneous pulses on the PV. Filtered PV Value is used for all PV dependent
functions. If PV signal is fluctuating due to noise, increase the filter time constant
value.
PROCESS
VALUE
OFFSET
o
0 C
(i) To compensate for known thermal gradient.
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 :
(ii) To match the display values with another recorder or indicator measuring the
same PV.
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.
OUTPUT
TYPE
RELAY
User has to set this parameter very carefully in accordance with the output used.
(Separate terminal for RELAY & SSR, Refer electrical installation )
Select Relay if LOAD is connected via contactor. Whenever user selects Relay, Cycle
time will automatically get set to 16 sec. User can modify cycle time via control list.
Select SSR if LOAD is connected via SSR (DC voltage pulses). Whenever user
selects SSR, Cycle time will automatically get set to 1sec. User can modify cycle
time via control list.
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.
15
User has a choice to set its own USER LOCK CODE between 1 to 9999, this is to
prevent unauthorized access of Control & Configuration List.
Default USER LOCK CODE is 15 to access Control & Configuration List.
USER
LOCK
CODE
AUTO
TUNE
Enable
If Disabled, this parameter will not be prompted if user press Up & Down keys
Simultaneously for 3Sec.
SET
POINT 1
Enable
If Enabled, User can View & edit the Set point in USER list.
If disabled, User can only View the Set Point but Can not edit it in USER list.
If Enabled, this parameter will be prompted if user press Up & Down keys
Simultaneously for 3Sec.
This parameter will be prompted only if selected control action is PID.
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.
