PPI Delta Pro 2 In 1 Self Tune Universal PID Temperature Controller User Manual
- June 11, 2024
- PPI
Table of Contents
Delta Pro 2 In 1 Self Tune Universal PID Temperature Controller
Delta Pro Delta Pro
User Manual
2-in-1 Self Tune Universal PID Temperature Controller
(RTD Pt100 & J / K / T / R / S / B / N Thermocouples)
User Manual
Delta Pro
CONTENTS
1. FRONT PANEL LAYOUT 2. BASIC OPERATION 3. PAGES & PARAMETERS 4. PAGE-10 :
INSTALLATION PARAMETERS 5. PAGE-11 : CONFIGURATION PARAMETERS 6. PAGE-12 : PID
CONTROL PARAMETERS 7. PAGE-13 : AUXILIARY OUTPUT-1 PARAMETERS 8. PAGE-14 :
AUXILIARY OUTPUT-2 PARAMETERS 9. MECHANICAL INSTALLATION 10. ELECTRICAL
CONNECTIONS
User Manual
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Section 1 FRONT PANEL LAYOUT
The controller front panel comprises of digital readouts, LED indicators and membrane keys as shown in Figure 1.1 below.
Upper Readout
Loop1 Heater Indicator
HT1
Loop1 Aux O/P Indicator / Upper Readout Showing Loop1 Aux Setpoint
AU1
Upper Readout Showing Loop1 Setpoint
SP1
Loop1 Self Tune Indicator
TN1
Lower Readout
PAGE Key
DOWN Key
Figure 1.1
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Loop2 Heater Indicator
HT2
Loop2 Aux O/P Indicator / Lower Readout Showing Loop2 Aux Setpoint
AU2
Lower Readout Showing Loop2 Setpoint
SP2
Loop2 Self Tune Indicator
TN2
ENTER / Alarm ACK Key
UP Key
READOUTS
The Upper Readout is a 4 digit, 7-segment bright green LED display and usually
displays the Temperature Value for Loop1. In Operator Mode, the Upper Readout
shows and permits editing of Control Setpoint and/or Auxiliary Setpoint for
Loop1. In setup mode, the Upper Readout displays parameter values.
The Lower Readout is a 4 digit, 7-segment bright green LED display and usually
displays the Temperature Value for Loop2. In Operator Mode, the Lower Readout
shows and permits editing of Control Setpoint and/or Auxiliary Setpoint for
Loop2. In setup mode, the Lower Readout displays the prompts for the
parameters.
INDICATORS
There are eight front panel LED indicators to show various statuses for each
Loop. The Table 1.1 and Table 1.2 below list each LED indicator (identified by
the front panel legend), the position on the front panel and the associated
status it indicates for Loop1 and Loop2, respectively.
Indicator HT1, HT2
Table 1.1 Function
Heater On/Off Status for Loop1 & Loop2, respectively.
AU1, AU2
Main Mode : Auxiliary Output On/Off Status for Loop1 & Loop2, respectively.
Setup Mode : Flashes while the upper or lower readout is showing the Aux
setpoints for Loop1 & Loop2, respectively.
SP1, SP2 TN1, TN2
SP1 glows when upper readout shows Setpoint for Loop1. SP2 glows when lower
readout shows Setpoint for Loop2.
TN1 flashes when Loop1 is performing Self Tune. TN2 flashes when Loop2 is
performing Self Tune.
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KEYS
There are three tactile keys provided on the front panel for configuring the
controller, setting-up the parameter values and selecting operation modes. The
Table 1.3 below details the key functions.
Symbol
Key
Table 1.3
Function
PAGE
Press to enter or exit set-up mode.
DOWN
Press to decrease the parameter value. Pressing once decreases the value by one count; keeping pressed speeds up the change.
UP
Press to increase the parameter value. Pressing once increases the value by one count; keeping pressed speeds up the change.
ENTER
Press to store the set parameter value and to scroll to the next parameter on the PAGE.
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Section 2 BASIC OPERATIONS
POWER-UP
Upon power-up the controller executes the following sequence of operations.
· Checks for Sensor Fault. If the connected sensor type is RTD Pt100 and the
selected sensor type is any of thermocouples or vice-a-versa; the controller
displays sensor fault massage (S.FLt) on upper readout for Loop1 & on lower
readout for Loop2. The user is advised to take necessary corrective action and
press Enter key to acknowledge the fault.
· All displays and indicators are lit on for approximately 3 seconds to check
any display segment failure.
· Displays controller model name on the Upper Readout and the firmware version
on the Lower Readout, for approximately 1 second. This helps user to verify
features and refer to the correct documents versions.
MAIN DISPLAY MODE
After the power-up display sequence, the Upper Readout and Lower Readout start
showing the measured Temperature values for Loop1 and Loop2, respectively.
This is called the MAIN display mode and this is the one that shall be used
most often.
OPERATOR MODE
Adjusting the Control and Auxiliary Setpoints for Loop1 and Loop2
The Control Setpoint and Auxiliary Setpoint for Loop1and Loop2 can be directly
adjusted on the Upper and Lower readout, respectively, while the controller is
in the MAIN display mode. The Control and Auxiliary Setpoint adjustment for
Loop1and Loop2 is permitted only if they are not locked via the parameter
‘Setpoint Locking’ in PAGE-11. If not locked, step through the following
sequence to adjust the Setpoint values.
1. Press and release ENTER key.
The Upper Readout starts flashing Control Setpoint value for Loop1. The front
panel indicator SP1 flashes to indicate that the value shown on the Upper
Readout is Control Setpoint for Loop1. The Lower Readout continues to show the
measured Temperature value for Loop2.
Press UP/DOWN keys to adjust the Control Setpoint value. Pressing UP or DOWN
key once changes the value by one count; holding the key pressed speeds up the
rate of change. The Upper Readout stops flashing as long as the UP or DOWN key
is pressed for adjustment to avoid any obstructions in viewing.
2. Press and release ENTER key.
The new value for the Control Setpoint for Loop1 is stored in the controller
memory. The controller now enters either into step 3 or step 5 depending upon
the selection for the Auxiliary Function for Loop1. If the Auxiliary Function
for Loop1 is selected as ‘None’, the controller directly enters into step 5
else it enters into step 3.
3. The Upper Readout starts flashing Auxiliary Setpoint (Alarm, Blower or
Auxiliary Control) value for Loop1. The front panel indicator AU1 flashes to
indicate that the value shown on the Upper Readout is Auxiliary Setpoint for
Loop1. The Lower Readout continues to show the measured Temperature value for
Loop2.
Press UP/DOWN keys to adjust the Auxiliary Setpoint value for Loop1.
4. Press and release ENTER key. The new value for the Auxiliary Setpoint for
Loop1 is stored in the controller memory.
5. The Lower Readout starts flashing Control Setpoint value for Loop2. The
front panel indicator SP2 flashes to indicate that
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the value shown on the Lower Readout is Control Setpoint for Loop2. The Upper
Readout now shows the measured Temperature value for Loop1.
Press UP/DOWN keys to adjust the Control Setpoint value for Loop2.
6. Press and release ENTER key.
The new value for the Control Setpoint for Loop2 is stored in the controller
memory. The controller now enters either into next step (step 7) or returns to
MAIN display mode depending upon the selection for the Auxiliary Function for
Loop2. If the Auxiliary Function for Loop2 is selected as ‘None’, the
controller returns to MAIN display mode else it enters the next step.
7. The Lower Readout starts flashing Auxiliary Setpoint (Alarm, Blower or
Auxiliary Control) value for Loop2. The front panel indicator AU2 flashes to
indicate that the value shown on the Lower Readout is Auxiliary Setpoint for
Loop2. The Upper Readout continues to show the measured Temperature value for
Loop1.
8. Press and release ENTER key. The new value for the Auxiliary Setpoint for
Loop2 is stored in the controller memory and the controller returns to the
MAIN display mode.
Repeat steps 1 through 8 each time to alter/view the Setpoint values for Loop1
and Loop2.
Notes: 1. It is a must to press the ENTER key after adjusting the
Control/Auxiliary Setpoint, else the new value will not be registered /
stored. The
controller waits (approx. for 30 seconds) by flashing new Control/Auxiliary
Setpoint Value. If the ENTER key is not pressed within wait time, the altered
value will not be stored in the controller memory and the previous set value
will be retained. Also, if the power failure occurs prior to pressing ENTER
key, upon resumption of power, the controller will not store the altered value
and retain the previous set value.
2. Upon adjusting the new Control Setpoint, the controller automatically
enters into the Self-Tuning Mode (the Tune Indication, TN1 and TN2 for Loop1
and Loop2, respectively starts flashing if the “New Installation” condition is
detected). Also, if the `Tune at Setpoint Change’ function is enabled in
PAGE-11 parameter list, the controller automatically enters into the Self-
Tunning Mode upon adjusting the Control Setpoint in the following conditions:
i) The “Tune at Setpoint Change” condition is detected.
ii) The Self-Tunning Mode is manually aborted while the Tunning is in
progress.
3. The Auxiliary Setpoint value is available only if the Auxiliary Function
is selected to other than None.
4. The Control and Auxiliary setpoint adjustments are permitted only if these
are not locked via the parameter ‘LOCK’ in PAGE-11. The setpoint values,
however, are always available for viewing regardless of the lock.
5. While in Operator Mode, the heater and auxiliary output statuses for both
Loop1 and Loop2 are forced off to clearly indicate what the Upper or the Lower
Readout is indicating.
Issuing Tune / Abort Command
The controller’s ‘X-PERT’ algorithm is powered with the ability to self detect
the events such as new installation, substantial change in Control Setpoint,
etc. for tuning itself to the process under control for both the Loops.
However, the user can issue separate Tune Command to each Loop to force itself
and make an attempt to improve the already computed values of the constants
used by the Loop control algorithm. Only under the following instances, the
user should issue the Tune Command:
1. If for some reason the control accuracy / performance is not satisfactory.
2. If it is required to re-initiate the tuning procedure once the self-
initiated tuning procedure was aborted by the user by issuing Abort Command.
3. There are substantial changes in the operating conditions such as change
in load, heater size, etc., after the initial installation.
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4. By the machine / equipment manufacturer at the time of dispatch to the end
user. This is to ensure that the controller retunes for the new conditions
such as running the machine with full load condition.
There are separate Tune / Abort commands for Loop1 and Loop2. Upon issuing
Tune / Abort command, the respective Loop enters / exits the re-tuning
procedure. Follow the steps below to issue Tune or Abort Command:
1. Press PAGE key. The Lower Readout shows PAGE and the Upper Readout shows
0.
2. Press ENTER key. The Lower Readout now shows either tUn.1 (if Loop1 is not
already tuning) or Abt.1 (if the tuning for Loop1 is in progress) and the
Upper Readout shows no (No).
3. Press UP key to select YES (Yes) on the Upper Readout to issue Tune /
Abort command for Loop1. Press ENTER key to register the YES command. Upon
pressing ENTER key, Loop1 enters / exits tuning operation depending upon the
command issued. If Tune command is issued, the front panel indicator TN1
starts flashing to indicate that Loop1 has begun tuning operation. If,
however, Abort command is issued, the flashing indicator TN1 turns off to
indicate that Loop1 tuning operation is aborted.
The Lower Readout now shows either tUn.2 (if Loop2 is not already tuning) or
Abt.2 (if the tuning for Loop2 is in progress) and the Upper Readout shows no
(No).
4. Repeat step 3 for issuance of Tune / Abort command for Loop2. The
controller automatically returns to MAIN display mode upon pressing ENTER key.
Notes:
1. The Tune and Abort Commands are mutually exclusive. That is, the Tune
Command is available only when tuning is not already initiated whereas Abort
Command is available only while tuning is in progress.
2. While the tuning operation is in progress, the user is advised not to
disturb the process or any parameter values of the controller under tuning.
Upon completion of the tuning operation, the respective indicator (TN1 for
Loop1 and TN2 for Loop2) turns off to indicate that the tuning operation is
over.
The following tips can help user to decide when to issue Tune command.
1. In most applications, the controller is subject to dry run (without actual
load conditions) by the machine manufacturer after its first installation on
the machine. This is usually done to conduct tests / trails of the machine. It
may then be desired that the controller automatically enter into re-tuning
procedure while it is first run with full load conditions at the end user
site. For this, it is best to issue the Tune command and switch off the
controller prior to dispatch (thus, leaving the tuning procedure incomplete).
The controller then automatically resumes the tuning when it is powered next
time.
2. If it is found that the control results are not satisfactory (may be due
to dynamic changes in the load conditions), it is best to issue this command
while the process is being controlled near the Control Setpoint. This will
cause small disturbances in the Temperature value while the controller is
performing tuning procedure but shall eventually result in a stable control
once the tuning procedure is complete.
TEMPERATURE VALUE ERROR INDICATIONS
In case, the measured Temperature value falls below the Minimum Range or rises
above the Maximum Range specified for the selected input sensor or in case of
sensor open / broken; the controller flashes the error messages as listed in
Table 2.1 below. Note that the messages for Loop1 flash on Upper Readout while
those for Loop2 flash on the Lower Readout.
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Message
Table 2.1
Error Type
Over-range (Temp. above Max. Range)
Under-range (Temp. below Min. Range)
Sensor Break (RTD / Thermocouple is open or broken)
Sensor Fault (Incorrect sensor type or connections)
Notes:
1. In case of Over-range and Under-range condition, the Control Output and
Auxiliary Output (if selected as Blower or Control) of the respective Loop is
held at the minimum level, that is, OFF.
2. In case of Sensor break (open) condition; the control signal (% output
power) will depend upon the Sensor Break Strategy selected in PAGE-11
parameter list that is commonly applicable for Loop1 and Loop2.
3. For 3-wire RTD sensor input, If the compensating lead (connected at rear
panel terminal number 3) is not connected or gets open, the controller does
not indicate PV error but the measured value is not compensated for the lead
resistance.
4. In case Tunning operation is in progress, the controller automatically
aborts the Tunning operation upon detecting the PV error condition.
5. If the Auxiliary Function is selected as Alarm for Loop1 and/or Loop2, the
respective alarm gets activated in error conditions. Refer below, Sub-section:
Alarm Status Under Temperature Error Conditions.
ALARM STATUS UNDER TEMPERATURE VALUE ERROR CONDITIONS
The Table 2.2 below summarizes the alarm status under various Temperature
error conditions. The alarm ON status means the alarm is activated and OFF
means the alarm is not activated. The corresponding Auxiliary output is
energized / deenergized in accordance with the alarm status and control logic
(Normal / Reverse).
ERROR TYPE Under-range
Over-range or Open
Table 2.2
ALARM TYPE Process Low Process High Negative Deviation Positive Deviation
Band Process Low Process High Negative Deviation Positive Deviation
Band
ALARM STATUS
ON OFF ON OFF ON OFF ON OFF ON ON
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Section 3 PAGES & PARAMETERS
The various parameters are arranged in different groups, called PAGES,
depending upon the functions they represent. Each group is assigned a unique
numeric value, called PAGE NUMBER, for its access.
The parameters are always presented in a fixed format: The Lower Readout
displays the parameter prompt (Identification Name) and the Upper Readout
displays the set value. The parameters appear in the same sequence as listed
in their respective sections.
SET-UP MODE
The Set-up Mode allows the user to view and modify the parameter values.
Follow the steps below for setting the parameter values:
1. Press and release PAGE key. The Lower Readout shows PAGE and the Upper
Readout shows page number 0. Refer Figure 3.1.
2. Use UP / DOWN keys to set the desired PAGE NUMBER.
3. Press and release ENTER key. The Lower Readout shows the prompt for the
first parameter listed in the set PAGE and the Upper Readout shows its current
value. (If the entered PAGE NUMBER is invalid (contains no parameter list or
any associated function), the controller reverts to the MAIN Display Mode.
4. Press and release the ENTER key until the prompt for the required
parameter appears on the Lower Readout. (The last parameter in the list rolls
back to the first parameter).
5. Use UP / DOWN keys to adjust the parameter value. (The display flashes if
UP key is pressed after reaching the maximum value or DOWN key is pressed
after reaching the minimum value).
6. Press and release the ENTER key. The new value gets stored in the
controller’s non-volatile memory and the next parameter in the list is
displayed.
The Figure 3.1 illustrates the example of altering the value for the parameter
`Input Type’.
Figure 3.1
or
or
Main Display Mode
Default Page
Page Number
First Parameter on Page-10
New Parameter value
Next Parameter on Page-10
Press PAGE key to enter Set-up Mode
Use UP/DOWN key to set the Page Number
Press ENTER key to open the Page
Use UP/DOWN
Press ENTER
keys to change key to store the value &
the value move to next parameter
Notes
1. Each page contains a fixed list of parameters that are presented in a pre-
determined sequence. Note however that availability of a few parameters,
called Conditional Parameters, depend upon the settings for some other
parameters. For example, the parameter Control Hysteresis’ for Output-1 is available only if, the set value for the parameterControl Action’ is `On-
Off’.
2. To exit the set-up mode and return to the MAIN Display Mode, press and
release PAGE key.
3. If no key is pressed for approximately 30 seconds, the set-up mode times
out and reverts to the MAIN Display Mode.
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MASTER LOCKING The controller facilitates locking all the PAGES (except
Operator PAGE) by applying Master Lock Code. Under Locking, the parameters are
available for view only and cannot be adjusted. The Master Lock, however does
not lock the operator parameters. This feature allows protecting the rather
less frequently used parameters against any inadvertent changes while making
the frequently used operator parameters still available for any editing.
For enabling / disabling the Lock, step through the following sequence:
Locking
1. Press and release PAGE key while the controller is in the MAIN Display
Mode. The Lower Readout shows PAGE and the Upper Readout shows 0.
2. Use UP / DOWN keys to set the Page Number to 123 on the Upper Readout.
3. Press and release ENTER key. The controller returns to the MAIN Display
Mode with the Lock enabled.
The Figure 3.2 below illustrates the Locking procedure.
Figure 3.2
or
MAIN Display Mode
Press PAGE key to enter Set-up Mode
Default Page
Use UP/DOWN key to set the `Locking Code’
Locking Code
MAIN Display Mode
Press ENTER key to Lock & Return to
Main Mode
UnLocking Repeat the Locking procedure twice for unlocking.
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Section 4 PAGE-10 : INSTALLATION PARAMETERS
User Manual
Table 4.1
Parameter Description
INPUT TYPE FOR LOOP1 Refer Table 4.2 for various available `Input Types’ along
with their respective Ranges and Resolutions.
Settings (Default Value)
Refer Table 4.2 (Default : Type K)
TEMPERATURE RANGE FOR LOOP1 This parameter value must be set in accordance
with the Maximum Temperature Range for which the equipment /machine is
designed.
ZERO OFFSET FOR LOOP1 This value is algebraically added to the measured PV to
derive the final PV that is displayed and compared for alarm/control. Final PV
= Measured PV + Offset
CONTROL ACTION FOR LOOP1 Select appropriate Control Algorithm suited for
process requirement.
HYSTERESIS FOR LOOP1 (Available for On-Off Control only) Sets differential
(dead) band between ON-OFF switching for Loop1.
INPUT TYPE FOR LOOP2 Refer Table 4.2 for various available `Input Types’ along
with their respective Ranges and Resolutions.
Min. to Max. specified for the selected Input Type
(Refer Table 4.2) (Default : 1376)
-1999 to 9999 or -199.9 to 999.9
(Default : 0)
PID On-Off (Default : PID)
1 to 999 or 0.1 to 999.9 (Default : 2)
Refer Table 4.2 (Default : Type K)
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Parameter Description
TEMPERATURE RANGE FOR LOOP2 This parameter value must be set in accordance
with the Maximum Temperature Range for which the equipment /machine is
designed.
ZERO OFFSET FOR LOOP2 This value is algebraically added to the measured PV to
derive the final PV that is displayed and compared for alarm/control. Final PV
= Measured PV + Offset
CONTROL ACTION FOR LOOP2 Select appropriate Control Algorithm suited for
process requirement.
HYSTERESIS FOR LOOP2 (Available for On-Off Control only) Sets differential
(dead) band between ON-OFF switching for Loop1.
Settings (Default Value)
Min. to Max. specified for the selected Input Type
(Refer Table 4.2) (Default : 1376)
-1999 to 9999 or -199.9 to 999.9
(Default : 0)
PID On-Off (Default : PID)
1 to 999 or 0.1 to 999.9 (Default : 2)
Option
What it means
Type J Thermocouple
Table 4.2
Range (Min. to Max.)
0 to +960°C / +32 to +1760°F
Resolution (Fixed or settable)
Type K Thermocouple -200 to +1375°C / -328 to +2508°F
Type T Thermocouple -200 to +385°C / -328 to +725°F
Type R Thermocouple Type S Thermocouple Type B Thermocouple
0 to +1770°C / +32 to +3218°F 0 to +1765°C / +32 to +3209°F 0 to +1825°C / +32 to +3092°F
Fixed 1°C / 1°F
Type N Thermocouple
0 to +1300°C / +32 to +2372°F
3-wire, RTD Pt100
-199 to +600°C / -328 to +1112°F
3-wire, RTD Pt100
-199.9 to 600.0°C / -199.9 to 999.9°F
0.1°C / 0.1°F
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Section 5 PAGE-11 : CONFIGURATION PARAMETERS
User Manual
Table 5.1
Parameter Description
TUNE ON SP CHANGE Re-tune the controller if there is a substantial (large)
change in the SP value. The P, I, D values are optimized.
OVERSHOOT INHIBIT ENABLE FOR LOOP1 (For PID Control Mode only) Set this
parameter to `Enable’ if the process exhibits unacceptable overshoot upon
start-up or a step change in SP. If enabled, the controller controls the rate
of change of PV to minimize overshoot.
OVERSHOOT INHIBIT FACTOR FOR LOOP1 This parameter adjusts the effectiveness of
the Overshoot Inhibit feature. Increase the value if the overshoot is curbed
but the PV takes longer to reach the SP. Decreases the value if the overshoot
persists.
SENSOR BREAK OUTPUT POWER FOR LOOP1 (Available for PID control only) In case
of Thermocouple / RTD broken or disconnected, the controller outputs this
power value under open loop condition.
OVERSHOOT INHIBIT ENABLE FOR LOOP2 Description same as for Loop1.
OVERSHOOT INHIBIT FACTOR FOR LOOP2 Description same as for Loop1.
SENSOR BREAK OUTPUT POWER FOR LOOP2 Description same as for Loop1.
SETPOINT LOCKING This parameter allows the supervisor to control permission of
editing various setpoints by the operator. This helps prevent any accidental
changes or unauthorized tempering.
Settings (Default Value)
Disable Enable (Default : Enable)
Disable Enable (Default : Disable)
1.0 to 2.0 (Default : 1.2)
0 to 100 (Default : 0)
Disable Enable (Default : Disable) 1.0 to 2.0 (Default : 1.2)
0 to 100 (Default : 0)
None Control Setpoint Auxiliary Setpoint Both Control & Auxiliary Setpoint
(Default : None)
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Parameter Description
SLAVE ID This parameter assigns a unique identification number that the Master
Device can use to address the instrument for data transactions.
BAUD RATE Communication speed in `Bits per Second’. Set the value to match
with the host baud rate.
PARITY Parity setting for serial communication protocol
COMMUNICATION WRITE ENABLE Yes The Read/Write parameters can be accessed for
both reading and writing. No The Read/Write parameters can only be accessed
for reading. That is, the parameter values cannot be altered through serial
communication.
Settings (Default Value)
1 to 127 (Default : 1)
4800 9600 19200 (Default : 9600) None Even Odd (Default : Even)
No Yes (Default : Yes)
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Section 6 PAGE-12 : PID CONTROL PARAMETERS
User Manual
Table 6.1
Parameter Description
OUTPUT POWER FOR LOOP1
This is a view only parameter (can not be adjusted by the user) that
facilitates the indication of % output power (0 to 100%) computed by the PID
algorithm.
CYCLE TIME FOR LOOP1
(For PID’ Control) For time-proportionating PID control, the output power is implemented by adjusting the ratio of ON : OFF to a fixed time interval, calledCycle Time’. The larger the power the larger the ON time and
vice-a-versa.
Larger Cycle time ensures longer Relay/SSR life but may result in poor control
accuracy and vice-a-versa.The recommended Cycle Time values are; 20 sec. for
Relay and 1 sec. for SSR.
PROPORTIONAL BAND FOR LOOP1
(For PID’ Control) The Proportional band is defined in terms of process value deviation from the setpoint (also known as process error). Within the band the output power is varied from maximum (100%) at maximum deviation to minimum (0%) at minimum deviation. The process value thus tends to stabilize at a point within the band where the power input equal losses. Larger Band results in better stability but larger deviation. The Proportional Band value is automatically calculated by controller’s Self- Tune feature and seldom requires any manual adjustment. INTEGRAL TIME (RESET) FOR LOOP1 (ForPID’ Control) The application of proportional band alone results in
process value stability within the band but away from the setpoint. This is
called steady state Offset Error. The integral action is incorporated for
automatic removal of offset error with minimum oscillations.
The Integral Time value is automatically calculated by controller’s Self-Tune
feature and seldom requires any manual adjustments.
Settings (Default Value)
Not Applicable (for View Only) (Default : Not Applicable)
0.5 to 120.0 Seconds (in steps of 0.5 Sec.)
(Default : 1.0)
1 to 999 °C 0.1 to 999.9 °C (Default : 100)
0 to 1000 Seconds (Default : 100)
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Parameter Description
DERIVATIVE TIME (RATE) FOR LOOP1 (For `PID’ Control) It is desired that the
controller should respond to any dynamic changes in the process conditions
(like variations in load, power supply fluctuations, etc.) fast enough so as
retain the process value near the setpoint. The derivative time determines how
strong the output power will change in response to the rate of change of
measured PV. The Derivative Time value is automatically calculated by
controller’s Self-Tune feature and seldom requires any manual adjustments.
OUTPUT POWER FOR LOOP2 Same as Output Power for Loop1
CYCLE TIME FOR LOOP2 Same as Cycle Time for Loop1
PROPORTIONAL BAND FOR LOOP2 Same as Proportional Band for Loop1
INTEGRAL TIME (RESET) FOR LOOP2 Same as Integral Time (reset) Loop1 DERIVATIVE
TIME (RATE) FOR LOOP2 Same as Derivative Time (rate) for Loop1
User Manual
Settings (Default Value)
0 to 250 Seconds (Default : 25)
Not Applicable (for View Only) (Default : Not Applicable)
0.5 to 120.0 Seconds (in steps of 0.5 Sec.)
(Default : 1.0) 1 to 999 °C
0.1 to 999.9 °C (Default : 100) 0 to 1000 Seconds (Default : 100) 0 to 250
Seconds (Default : 25)
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Section 7 PAGE-13 : AUXILIARY OUTPUT-1 PARAMETERS
User Manual
Auxiliary Output-1 is associated with Loop1.
Table 7.1
Parameter Description
AUXILIARY FUNCTION FOR LOOP1 Select the function / feature for which the
Auxiliary output 1 is to be used.
Alarm Function Parameters for Loop1 ALARM TYPE Select the Alarm activation
type.
Settings (Default Value)
None Alarm Control Blower (Default : None)
Process Low Process High Deviation Band
Window Band (Default : Process Low)
ALARM SETPOINT
(Available for Process High or Process Low Alarm Type) Sets Alarm limit
independent of control setpoint.
Min. to Max. Range for the selected Input type
(Default : 0)
ALARM DEVIATION BAND (Available for Deviation Band Alarm Type) Sets positive
or negative deviation (offset) limit from control setpoint for High or Low
Alarm activation, respectively.
ALARM WINDOW BAND (Available for Window Band Alarm Type) Sets symmetrical
positive and negative deviation (offset) limits from control setpoint for both
High and Low Alarm activation.
-199 to 999 or -199.9 to 999.9
(Default : 3)
3 to 999 or 0.3 to 999.9 (Default : 3)
ALARM LOGIC Select Normal’ if Alarm is to activate an Audio / Visual alarm. SelectReverse’ if Alarm is to Trip the system.
ALARM INHIBIT Set to Yes to suppress Alarm activation upon power-up or process
start-up.
Normal Reverse (Default : Normal)
No Yes (Default : Yes)
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Parameter Description
Settings (Default Value)
Alarm Control Function Parameters for Loop1
AUXILIARY SETPOINT
Positive (+) or Negative (-) offset to Control Setpoint for defining Auxiliary
Setpoint.
(Min. Range – SP) to (Max. Range – SP) for selected Input
(Default : 0)
CONTROL HYSTERESIS
(Available for On-Off Control) Sets a differential (dead) band between the ON
and OFF states. Keep it large enough to avoid frequent switching of the load
without losing the desired control accuracy.
1 to 999 or 0.1 to 99.9 (Default : 2 or 0.2)
CONTROL LOGIC Normal The Output remains ON for PV below Setpoint and OFF
otherwise. Reverse The Output remains ON for PV above Setpoint and OFF
otherwise.
Blower Function Parameters for Loop1
BLOWER SETPOINT
Positive (+) offset to Control Setpoint (SP) for defining Blower Setpoint.
Normal Reverse (Default : Normal)
0 to 250 or 0.0 to 25.0 (Default : 0)
BLOWER HYSTERESIS
Sets a differential (dead) band between the blower ON and OFF states.
1 to 250 or 0.1 to 25.0 (Default : 2 or 0.2)
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Section 8 PAGE-14 : AUXILIARY OUTPUT-2 PARAMETERS
User Manual
Auxiliary Output-2 is associated with Loop2. The Parameters for Auxiliary Output-2 are the same as that for Auxiliary Output-1 except for one additional parameter (listed below) for selecting the output type as Relay or SSR in accordance with the order output type.
Table 8.1
Parameter Description
AUXILIARY OUTPUT-2 TYPE Select as per the hardware module fitted in accordance
with the Ordering Code.
Settings
Relay SSR
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Section 9 MECHANICAL INSTALLATION
OUTER DIMENSIONS AND PANEL CUTOUT The Figure 9.1 shows the controller outer
dimensions.
Figure 9.1
48mm (1.89in)
48mm (1.89in)
HT1 AU1 SP1 TN1
Delta Pro
HT2 AU2 SP2 TN2
94mm (3.70in)
Front View
7mm (0.276in)
Side View
User Manual
PANEL CUTOUT The Figure 9.2 shows the panel cutout requirements for a single
controller.
Figure 9.2
Parameter
Dimensions
mm
inches
V
H
45 (-0, +0.5) 1.77 (-0, +0.02)
V
45 (-0, +0.5) 1.77 (-0, +0.02)
H 18
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User Manual
PANEL MOUNTING Follow the steps below for mounting the controller on panel: 1.
Prepare a square cutout to the size shown in Figure 9.2. 2. Remove the Panel
Mounting Clamp from the controller Enclosure and insert the rear of the
controller housing through the
panel cutout from the front of the mounting panel. 3. Hold the controller
gently against the mounting panel such that it positions squarely against the
panel wall, see Figure 9.3.
Apply pressure only on the bezel and not on the front label. 4. Insert the
mounting clamps on either side of the controller in the slots provided for the
purpose. Rotate the screws clock-
wise so that they move forward until they push firmly against the rear face of
the mounting panel for secured mounting.
Figure 9.3
Bezel
Controller
Clamps
Mounting Panel with Square Cutout
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Section 10 ELECTRICAL CONNECTIONS
WARNING MISHANDLING / NEGLIGENCE CAN RESULT IN PERSONAL DEATH OR SERIOUS
INJURY.
User Manual
1. The user must rigidly observe the Local Electrical Regulations.
2. Do not make any connections to the unused terminals for making a tie-point
for other wires (or for any other reasons) as they may have some internal
connections. Failing to observe this may result in permanent damage to the
controller.
3. Run power supply cables separated from the low-level signal cables (like
RTD, DC Linear (Voltage) signals, etc.). If the cables are run through
conduits, use separate conduits for power supply cable and low-level signal
cables.
4. Use appropriate fuses and switches, wherever necessary, for driving the
high voltage loads to protect the controller from any possible damage due to
high voltage surges of extended duration or short-circuits on loads.
5. Take care not to over-tighten the terminal screws while making
connections.
6. Make sure that the controller supply is switched-off while making/removing
any connections or removing the controller from its enclosure.
CONNECTION DIAGRAM
The Electrical Connection Diagram is shown on the top side of the enclosure.
The diagram shows the terminals viewed from the REAR SIDE with the controller
label upright. The connecters provided for wiring are pluggable male-female
type. The female parts are soldered on the controller PCBs while the male
parts are with screws and removable. The rear panel electrical wiring
connection diagram is shown in Figure 10.1.
Figure 10.1
SSR
OUTPUT2 OUTPUT1
+ +
PV INPUT1 PV INPUT2
+-
+-
TC RTD
TC
RTD RS485
B+ B-
AUX OP2 NC C NO
RLY
17 16 15 14 13 12 11 10
18
9 +AUX OP1
SSR
–
19
8
SSR
20
7+
–
21
6
1
2
3
4
5
L
N
85~264
VAC
NO
C
Relay
AUX OP2
SSR
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User Manual
DESCRIPTIONS The back panel connections are described as under: PV INPUT1 :
RTD Pt100, 3-wire / Thermocouple (Terminals : 17, 16, 15) PV INPUT2 : RTD
Pt100, 3-wire / Thermocouple (Terminals : 14, 13, 12) Connect 3-wire RTD Pt100
sensor or Thermocouple as shown below.
Figure 10.2 (a)
Figure 10.2 (b)
–
17 16 15 14 13 12
PV Input1 PV Input2
17 16 15 14 13 12
RTD Pt100, 3-wire
Thermocouple
RTD Pt100, 3-wire Connect single leaded end of RTD bulb to terminal 17 (14) and the double leaded ends to terminal 16 (13) and 15 (12) (interchangeable) as shown in Figure 10.2 (a). Use low resistance copper conductor leads of the same gauge and length. Avoid joints in the cable.
Thermocouple Connect Thermocouple Positive (+) to terminal 17 (14) and Negative (-) to terminal 16 (13) as shown in Figure 10.2 (b). Use correct type of extension lead wires or compensating cable. Avoid joints in the cable.
OUTPUT1 : Control Output – SSR (Terminals : 18, 19) OUTPUT2 : Control Output –
SSR (Terminals : 20, 21) AUX OP1 : Alarm / Control – Relay (Terminals : 7, 8,
9)
Alarm / Control – SSR (Terminals : 8, 9) AUX OP2 : Alarm / Control – Relay
(Terminals : 3, 4)
Alarm / Control – SSR (Terminals : 6, 7) Figure 10.3
AUX OP2 AUX OP1 OUTPUT1 OUTPUT2
AUX OP2 AUX OP1
7 9 18 20 6 8 19 21
Output1/ Output2 / AUX OP1 / AUX OP2 SSR 21
NO
39
C
48
NC
7
AUX OP1 / AUX OP2 Relay
Delta Pro
User Manual
Relay Output Potential-free Relay changeover contacts NO (Normally Open) and C
(Common) rated 10A/240 VAC (resistive load).
SSR Output Connect (+) and (-) terminals of SSR to (+) and (-) terminals of
controller, respectively. Use Zero-Crossover, 3 to 30 VDC operated SSR.
RS485 : Serial Communication Port (Terminals 10, 11)
Connect terminal 11 and 10 of the controller to (+) and (-) RS485 terminals of
the Master device.
To ensure reliable operation of the Serial Communication Link (without data
corruption due to line noise or reflections), use a pair of twisted wires
inside screened cable with the terminating resistor (100 to 150 Ohms) at one
end, as shown in Figure 10.4 below.
B+
HOST
BMaster Device
Figure 10.4 Terminating Resistor (100 to 150 Ohms)
Screened Cable
Twisted Wire Pair
10 B-
11 B+
Serial Comm. Terminals
85~264 VAC : Power Supply (Terminals 1, 2)
The controller is supplied with power connections suited for 85 to 264 VAC
line supply. Use well-insulated copper conductor wire of the size not smaller
than 0.5mm2 for power supply connections. Connect Line (Phase) supply line to
terminal 1 and the Neutral (Return) supply line to terminal 2 as shown in
Figure 10.5 below. The controller is not provided with fuse and power switch.
If necessary, mount them separately. Use a time lag fuse rated 1A @ 240 VAC.
Line Neutral
Fuse
Figure 10.5
2 Pole Isolating Switch
Power Supply Terminal
1L
2N
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User Manual
Jan 2022
Process Precision Instruments
101, Diamond Industrial Estate, Navghar, Vasai Road (E), Dist. Palghar – 401
210.Maharashtra, India Sales : 8208199048 / 8208141446 Support : 07498799226 /
08767395333 sales@ppiindia.net, support@ppiindia.net
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