background image

i

0

 to

500 Sec.

0 Sec.

DELAY 2

HYS 2 

o

1 to 25  C

o

2 C

CONTROL

HYS

o

1 to 25  C

2°C

TUNE 

OFFSET

50 %

 to 

100 %

100 %

DELAY 1

0

 to

500 Sec.

120 Sec.

This parameter will be prompted only if selected control action is ON - 
OFF. It sets the dead band between ON & OFF switching of the Output. 
Larger value of hysterisis minimize the number of ON-OFF operation to 
the load. This increases life of actuators like contactors but, also 
produces large errors (between PV & SV).

-9.9 

to

9.9°C

0 °C

GAP 1

-9.9 

to

9.9°C

0 °C

GAP 2

0

 to

99 Sec.

10 Sec.

SOAK

TIME

DELAY

0.0

 to

99°C.

This  parameter  will  be  prompted  only  if  selected  control  action  is  ON  - 
OFF. It sets the main output Delay time where O/P once turned OFF will 
turn ON only after Delay time, regardless difference between PV & SP. 
Also, Delay will be considered at every power ON.

This parameter will be prompted only if Control Logic for Output1 is 
configured for Heat-Cool.
SP (set point) will be consider as (SP-Gap1) for heating.

This parameter will be prompted only if selected control mode for 
output2 is Auxiliary control or an Alarm. The value of this parameter sets 
the dead band between ON & OFF switching of output load.

 This parameter will be prompted only if Control Logic for Output1 is 
configured for Heat-Cool.
SP (set point) will be consider as (SP+Gap2) for cooling.

This  parameter  will  be  prompted  only  if  Output2  is  configured  as  an 
Auxiliary control output OR Control Logic is configured for Heat-Cool. In 
this mode, it sets the output Delay time where O/P once turned OFF will 
turn  ON  only  after  Delay  time,  regardless  difference  between  PV  & 
SP2. Also, Delay will be considered at every power ON.

This  parameter  will  be  prompted  only  if  selected  control  mode  for 
Output2 is Soak timer. Depending on end of soak strategy, the value of 
this parameter sets the activation time for OP2 when Soak timer is over. 
Setting this parameter to ‘0’ will make OP2 continuously ON at the end 
of Soak time till User starts the next cycle.

This parameter defines the permissible deviation of PV from SP during 
soak  time  cycle.  If  PV  falls  outside  the  Soak  band  during  soak  cycle, 
Timer  halts.  Timer  will  start  only  when  PV  falls  within  the  soak  band. 
This parameter is ignored if set to ‘0’.

0 Sec.

SOAK
BAND

CONFIGURATION LIST :

   

(1) 

 key simultaneously 

To enter in this mode, press and hold SET & UP

for 3 sec. 

                                                  (2) Press UP or DOWN key to scroll between parameter options. 
                                                  (3) Press SET key to store current parameter & move on to the next parameter.

LOWER

DISPLAY

UPPER

DISPLAY

 PARA

METER

RANGE

DESCRIPTION

DEFAULT

This parameter will be prompted only if selected control action is PID. 
This parameter allows the User to carry out Auto Tuning function below 
the set point. (If tune offset is set to 50 %, tuning will be carried out at 
50 % of the set point and if set to 100 %, tuning will be carried out at 
100 % of the set point.)

4

OIM AI-7X82 V2.0 Page 4 of 9

LOWER

DISPLAY

UPPER

DISPLAY

 PARA

METER

DESCRIPTION

DEFAULT

Set this parameter to 15 (Default LOCK CODE) to access Config. List.
User have a choice to set different Lock Code via USER LOCK CODE in Config. 
List.

LOCK
CODE

0

Fe-k(J) T/C

Cr-AL(K) T/C

o

760 C

o

-99 

1300 C

o

-99 

1300 C

o

-99 

400 C

o

1  C

o

1  C

o

1  C

}

(R) T/C

(S) T/C

TC - N

TC - T

o

0 ~ 1700 C

o

0 ~ 1700 C

o

1  C

o

1  C

o

1  C

Sensor Type 

Accuracy

Resolution

Range

  

±

o

C

TC - J

INPUT

TYPE

This parameter value is set according to the type of sensor (Thermocouple or RTD 
input) connected to the controller's input terminals. 

Содержание AI-7482

Страница 1: ...bon dust salt air direct sunlight or radiant heat v Ambient temperature and relative humidity surrounding the controller must not exceed the maximum specified limit for proper operation of the controller v The controller in its installed state must be protected against excessive electrostatic or electromagnetic interferences Ventilation holes provided on the chassis of the instrument are meant for...

Страница 2: ...782 AI 7982 FRONT PANEL LAYOUT AI 7882 AI 7682 Glows when OP1 is ON flashes when delay time dly1 is in operation if selected mode is ON OFF Glows when OP2 is ON flashes when alarm condition persists even after acknowledged OR delay time dly2 is in operation selected mode is ON OFF Glows when Soak mode is selected flashes when Soak timer is in operation along with UP key 4 To scroll the parameter t...

Страница 3: ...upon the error SV PV Value of this parameter is automatically set by Auto tune function o 5 0 C LOWER DISPLAY UPPER DISPLAY PARA METER RANGE DESCRIPTION DEFAULT CONTROL LIST SET DOWN key simultaneously To enter in this mode press for 3 sec User can then set the following control parameters OUTPUT OFF 1 to10 This parameter will be prompted only if selected control action is PID With this parameter ...

Страница 4: ...ered at every power ON This parameter will be prompted only if selected control mode for Output2 is Soak timer Depending on end of soak strategy the value of this parameter sets the activation time for OP2 when Soak timer is over Setting this parameter to 0 will make OP2 continuously ON at the end of Soak time till User starts the next cycle This parameter defines the permissible deviation of PV f...

Страница 5: ...ID 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 B...

Страница 6: ...list OUTPUT 2 CONTROL 15 0 This parameter will appear only if Control logic is Heat Cool OP2 will be OFF at Ambient OP2C value irrespective of output 2 mode Auxiliary Toggle OUTPUT 2 FUNCTION This parameter allows the user to select output 2 as an Auxiliary control For options refer Table 3 This parameter allows the user to select output 2 as an Alarm control For options refer Table 4 This paramet...

Страница 7: ...der alarm conditions used to trip the process in alarm conditions ALARM INHIBIT If this parameter is set as YES Alarm condition persists it will Disable Alarm O P at power ON If this parameter is set as NO Alarm condition persists it will Enable Alarm O P at power up NO ALARM ACK AUTO Once the Alarm is activated User has following three options to de activate it When PV falls within the programmed...

Страница 8: ... only after pressing START key for 3 sec PV SV for any of the following conditions 1 At every Power ON 2 Completion of current soak time cycle 3 Power failure during soak time is in progress TIMER START MODE MOD 2 In this Mode Timer will start only after pressing START key for 3 sec PV SV for any of the following conditions 1 At every Power ON 2 Completion of current soak time cycle After executin...

Страница 9: ... undershoot Auto tuning is applied in case of 1 Initial set up for a new process 2 Substantial change in SP from previous auto tuning value 3 Control accuracy is not satisfactory If the control performance by using auto tuning is still unsatisfactory User can apply further adjustments of P I D values as shown in Table 3 below Fig 3 1 HEAT LOGIC ON OFF TIME 0 TEMP C HYSTERISIS SP ON ON ON AMB O P O...

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