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23

…5.7.1

Auto-tuning Page

Auto-tune Status/Enable
Select 

StArt

 to enable auto-tune cycle. The 'AT' (auto-tune) l.e.d. is

illuminated. The time taken for completion of auto-tuning is dependent on the
speed of response of the controlled process.

✶

Note. If 

Auto-tune

 is selected it is not possible to exit the 

Auto-tuning Page

until the auto-tune cycle is complete or ended by the operator.

Process Variable (upper display)

Control Set Point Value (lower display)
The set point is displayed for monitoring only and cannot be changed at this
frame.

Process Variable (upper display)

Control Output (lower display)
The output value is displayed for monitoring only and cannot be changed at this
frame.

Auto-tune Status and Enable/Disable

At–ON

 

– (Auto-tune On) auto-tuning can be switched off by

pressing the 

 switch

to select 

StOP

 and then pressing the 

 switch.

At–UPd

– (Auto-tune Update) the auto-tune cycle is complete and

the calculated terms are being written to memory.

At–ENd

– (Auto-tune End) the auto-tune cycle is complete.  If no

failures occur during the cycle, the calculated values are
loaded into memory as new control terms and the
instrument returns automatically to the 

Operating Page

. If

failures or cautions occur during auto-tuning, error
messages are displayed in the next frame.

Auto-tune Error Messages
If a 

Failure

 occurs the controller reverts to the manual control mode, the old

control terms are retained and the auto-tune l.e.d. flashes.

If a 

Caution

 occurs the calculated control terms are loaded into memory and

control continues in the automatic mode. Any errors are acknowledged when
exiting this frame and the auto-tune l.e.d. flashes.

For an explanation of error messages – refer to Table 5.1 overleaf.

At–ON

At–UPd

At–ENd

A-tUNE

FAIL

StArt

At–OFF

AUtO

tUNE

  1 0 0 . 3
  1 1 0 . 5

AL

RMT

AT

MAN

Constant L.E.D.

 100.3

 100.5

 100.3

OP 50.0

 100.3

W 50.0

or

StArt

or

or

A–tUNE

CAUtN

A–tUNE

or

StOP

Flashing With

Flashing With

Error

Message

Error

Message

AUtO

tUNE

Control Output

Valve

Status/Position

Errors

100.3

100.5

Operating 

Page

No 

Errors

5  CONTROL OPERATION…

Содержание COMMANDER 1900 Series

Страница 1: ...ABB Automation Operating Guide Controller Versions COMMANDER 1900 Series Circular Chart Recorders COMMANDER 1900 100 3 198 5 dEGF OP54 5 200 5 50 8 ...

Страница 2: ...innovative design and development to incorporate the latest technology The NAMAS Calibration Laboratory No 0255 B is just one of the ten flow calibration plants operated by the Company and is indicative of ABB Instrumentation s dedication to quality and accuracy R E G I ST E R E D F I R M BS EN ISO 9001 St Neots U K Cert No Q5907 Stonehouse U K Cert No FM 21106 Stonehouse U K Cert No 0255 EN 29001...

Страница 3: ...ssover Value 33 5 10 3 Calculating the Transition Bandwidth Value 33 6 RECORD OPERATION 34 6 1 Operating Page Displays 35 6 2 Alarm Acknowledge Page 36 6 2 1 Alarm Indications 36 6 2 2 Acknowledging Alarms 36 6 2 3 Using the Alarm Acknowledge Page 36 6 3 Totals Page Displays 37 7 SIMPLE FAULT FINDING 38 8 SPARES LIST 39 The COMMANDER 1900 series of documentation is shown in Fig 1 1 The Standard Ma...

Страница 4: ...ing between Not applicable on single channel instruments 00 3 100 3 LINE FAILEd 2 1 Instrument Power up Fig 2 1 and 2 2 Caution Ensure that all connections especially to the earth stud are made correctly a Check that the input sensors are installed correctly b Check that the pen s are installed correctly see Fig 2 1 c Switch on the supply to the instrument any power operated control circuits and t...

Страница 5: ...stored in non volatile memory on main board is corrupt Check and correct program data C Timer set up stored in battery backed RAM is corrupt Check and correct data in Set Up Timer Page d Maths set up stored in battery backed RAM is corrupt Check and correct data in Set Up Maths Page F Totalizer set up in battery backed RAM has been corrupt Check and correct data in Set Up Totals Page Refer to the ...

Страница 6: ...F Raise pens 1 2 3 4 5 6 6 7 5 4 3 Remove cap Fit new pen capsule ensuring that the arm locates in the pen capsule slot Remove spent capsule Gently pull the arm off the bracket Lifter bars Ensure that the arm is positioned above its lifter bar Slide pen assembly onto the appropriate bracket until it clips into place AL RMT AT MAN 75 0 dEG F Raise pens 1 2 Fig 2 4 Fitting the Chart Fig 2 5 Fitting ...

Страница 7: ...d by separate l e d s on the front panel faceplate s see Fig 3 1 Status of process variable alarms Current channel displayed Information AL1 Channel 1 AL2 Channel 2 AL3 Channel 3 AL4 Channel 4 CH1 Channel 1 CH2 Channel 2 CH3 Channel 3 CH4 Channel 4 Information An 11 segment Bar Graph Display indicates deviation of the measured value from the set point AL States of alarms on controller channel RMT ...

Страница 8: ... 303 Record CH1 CH2 CH3 CH4 AL1 AL2 AL3 AL4 303 404 Record Control Al RMT AT MAN 100 3 100 5 Blank Control Al RMT AT MAN 100 3 100 5 CH1 CH2 CH3 CH4 AL1 AL2 AL3 AL4 303 404 Record Control Al RMT AT MAN 200 3 200 5 Control Al RMT AT MAN 200 3 200 5 Instrument Identification 1911 1912 1913 1914 1922 1923 1924 Used to program all Channels 3 DISPLAYS CONTROLS Fig 3 2 Faceplate Combinations and Product...

Страница 9: ...ter X Y Z Select 3 DISPLAYS CONTROLS Fig 3 3 a Advancing to Next Page Fig 3 3 b Moving Between Parameters Note Continued pressure on the and switches causes the rate of change of the displayed value to increase To make small adjustments operate the switches momentarily Fig 3 3 c Adjusting a Parameter Value Note Continued pressure on the and switches causes the rate of change of the displayed value...

Страница 10: ... Control Page CONtrL PAGE Auto Tune AUto tUNE PV SPT ACKNLG ALArMS Acknowledge Alarms Totalized Value 8888 8888 tOtALS PAGE See If control channels Totalizers are off or option not fitted OPrtOr LEVEL Operating Page Section 6 1 Page 35 Alarm Acknowledge Page Section 6 2 3 Page 36 Totals Page Section 6 3 Page 37 PV SPT ACKNLG ALArMS Acknowledge Alarms Totalized Value 8888 8888 tOtALS PAGE See If re...

Страница 11: ...ction level Check input source for possible broken sensor Check input connections Check input link position Check input configuration in Set Up Input Page Ad FAIL Hardware failure on Process ariable 1 F PFb 200 5 Input out of range on Position Feedback Process variable input exceeds the limits for the linearizer selected 200 5 200 3 100 3 F rSt Input fail on Remote Set Point F INPt Input out of ra...

Страница 12: ...to tune Error _______ _______ On Off Hysteresis HYSt ____ Approach Band APPb _ _ Derivative Action dErIU ___ PV Set Point ACKNLG ALArMS Acknowledge Alarms Alarm Identity Type Totalized Value Reset Total Stop Go 8888 8888 PV Output Manual Reset tOtALS PAGE rESEt t1___ COUNt1 ____ Total 1 ____ OP____ ____ r___ _ A HPrC ____ ____ ____ PV Units ____ dEG F Set Point Type ______ ______ Set Point Ratio S...

Страница 13: ...Reset Total Stop Go 8888 8888 Output Manual Reset tOtALS PAGE rESEt t1___ COUNt1 ____ Total 1 ____ OP____ ____ r___ _ A HPrC ____ ____ ____ PV Units ____ dEG F Set Point Type ______ ______ Set Point Ratio Set Point Bias rAt10 1 000 bIAS 0 Segment Time SEG __ t_____ Repeat Counts rPt Ct ____ Time tI_E ____ Date dAtE ____ Program Status PrG__ ____ See If Totalizer on control channel is off or Totali...

Страница 14: ...l when manual mode is selected 5 1 3 Profile Control Fig 5 3 5 1 4 Cascade Control The master in a cascade set up is always channel 1 and the slave is always channel 2 If the slave is switched to manual control with cascade set point selected the slave s set point reverts automatically to local set point Ratio and bias are applied to the master output value so that the slave s cascade set point va...

Страница 15: ...he Set Up Operating Page CONTROL CONFIGURATION LEVEL and the Integral Action Time in the OPERATOR LEVEL is OFF Continued on next page Process Variable Valve Status and Valve Position W valve stopped O valve opening C valve closing The valve position is displayed as a percentage of its full travel position not displayed on boundless controllers To adjust the valve position manually select Manual co...

Страница 16: ... Local set point to obtain an acceptable difference If remote set point tracking is enabled Set Points Page CONTROL CONFIGURATION LEVEL the local set point tracks the remote set point when the remote set point is selected The switch if programmed in the ADVANCED CONFIGURATION LEVEL can also be used for Local Second set point selection but transfer takes place without display of the Balance value i...

Страница 17: ...es or hours depending on the Ramp Soak Time Units set in the Profile Control Page Advanced Software Options Manual h is displayed if hours are selected Use the or switches to add or subtract the extended time from the soak time Refer to the Profile Control Page If the extended soak value is set to 0 the Time Remaining feature is disabled Repeat Count Remaining number of times the current profile i...

Страница 18: ...the switch to return to top of Alarm Acknowledge Page Alarm Acknowledge Page Use the switch to advance to next frame Alarm Identity Upper display shows the alarm identity and type Lower Display shows the trip level of the alarm identified in the upper display Acknowledge Alarm Use the switch to acknowledge the alarm When the alarm is acknowledged ACKNGd is displayed and a constant l e d indicates ...

Страница 19: ...t to ENbL Y Counter Reset The Front Batch Flow Total can be reset to the Preset Value in Set Up Totals Page if required Select t1 YES to reset the counter t1 indicates Flow Total 1 Note If the Counter Reset is disabled in Set Up Totals Page the counter reset frame is omitted Counter Stop Go Select GO to start the counter or StOP to stop it Note If the Counter Stop Go is disabled in Set Up Totals P...

Страница 20: ...vels OPERATOR BASIC CONFIGURATION CONTROL CONFIGURATION and ADVANCED CONFIGURATION The passwords are programmed in the Access Page in the BASIC CONFIGURATION LEVEL Incorrect Password Correct Tune or Configuration Password AL RMT AT MAN AL RMT AT MAN AL RMT AT MAN AL RMT AT MAN AL RMT AT MAN AL RMT AT MAN BASIC AL RMT AT MAN AUtO tUNE AL RMT AT MAN AL RMT AT MAN OPrtOr LEVEL Configuration Password ...

Страница 21: ...amp soak Select run to continue running the profile if operator has stopped program Press the switch to activate rS HLd ENd Run Hold End the profile is completed and the digital input assigned to the profile function is still in the Run state This frame is only displayed if a digital input is used to run and hold the profile Note If a digital input is assigned to the run hold function the user is ...

Страница 22: ...tep Values at Start of Execution Controller Output Time Signal Noise Set Point PV Output Time Output Step Size Time Calculated Trip Point Information The noise level of the process is monitored and then a step is applied to the control output value The response of the process is recorded and these results are used to calculate the control terms Fig 5 6 Start up Auto tuning Information At Set Point...

Страница 23: ... is used from initial start up or when there is a large change in set point value At Set point tuning is used when the process is close to the required set point Select the auto tune type required Output Step Size The output step size is a percentage of the control output Start up Tuning the larger the step size used the quicker the auto tuning process is performed but the greater the overshoot ab...

Страница 24: ...high and low limits when auto tuning is activated If the process value exceeds one of these the auto tuning cycle is shut off automatically by reverting to the manual control mode and returning the controller output to the value set when the auto tuning was activated The high and low values are the limits for cancelling auto tune execution Set the value required in engineering units the decimal po...

Страница 25: ...being written to memory At ENd Auto tune End the auto tune cycle is complete If no failures occur during the cycle the calculated values are loaded into memory as new control terms and the instrument returns automatically to the Operating Page If failures or cautions occur during auto tuning error messages are displayed in the next frame Auto tune Error Messages If a Failure occurs the controller ...

Страница 26: ...oisy Check input wiring to try and find the source of the problem If the process is changing rapidly then allow it to settle before re trying the auto tuning process With Start up tuning the process variable is 10 of the display range below the control set point Allow the process variable to move further below the control set point before re trying Start up auto tuning Alternatively use the At Set...

Страница 27: ...ves an output that is proportional to the deviation of the process variable from the set point The range over which the output is adjusted from 0 to 100 is called the proportional band and this is expressed as a percentage of the engineering range span Fig 5 8 Proportional Control Information With Proportional Control P only or P and D the controller may stabilize the process at a value which is o...

Страница 28: ... a constant rate the derivative action produces a change in output proportional to this rate of change The derivative time constant is the time interval in which the part of the output signal due to proportional action increases by an amount y equal to the part of the output signal due to derivative action x The derivative acting on the process variable instead of the deviation process variable se...

Страница 29: ... frequently Derivative Action introduce to the control system to enable faster approach to the set point by enabling use of a smaller proportional band to minimize overshoot Reverse Acting Direct Acting Set Point 100 0 Output 50 50 Offset 0 Proportional Band 1000 Set Point 100 0 Output 50 0 Offset 0 Proportional Band 1000 100 0 50 0 1000 Set Point Proportional Band 100 0 50 0 1000 Set Point Propor...

Страница 30: ... Integral Action Time OFF Derivative Action Time OFF Note Proportional Band value PBc Measure the critical cycle time tc P 2 x PBc P I 2 2 x PBc tc 1 2 P D 1 6 x PBc tc 2 tc 12 Time Process Variable Response Time Time Process Variable Response Time Process Variable Response Time Critical Cycle time tcc Decrease Proportional Band Calculate Terms P I D 1 6 x PBc tc 2 tc 8 5 9 Introduction to Standar...

Страница 31: ...eases stability permitting smaller proportional band and larger integral action times to be used Reduces height of first peak Reduces period of oscillation Stability decreases Process noise is amplified Maximum contribution not realized Derivative Action Time too High Derivative Action Time Correct Derivative Action Time too Low Integral Eliminates offset between Process and Set Point Time for var...

Страница 32: ...eering range span Proportional Band Set the proportional band value required between 0 1 and 999 9 in 0 1 increments Integral Action Time Set the required time between 1 and 7200 in 1 second increments 7200 seconds 120 minutes OFF is selected above 7200 or below 1 Manual Reset Set the required proportional band offset on the lower display between 0 0 and 100 0 of the engineering range span in 0 1 ...

Страница 33: ...ulated by the controller The output is divided into two different control elements one for raising the product temperature heat output and one for lowering the product temperature cool output Transition Bandwidth used to transfer smoothly from one set of control terms to the other Crossover Value defines the changeover point between heat output active and cool output active The crossover value is ...

Страница 34: ...isplay between 0 0 and 100 0 of the engineering range span in 0 1 increments Cycle Time cool output This setting can be ignored for analog control outputs Set the required cycle time for time proportioning control from 1 0 to 300 0 in 0 1 second increments 300 seconds 5 minutes Proportional Band cool output Set the proportional band value required between 0 1 and 999 9 in 0 1 increments Integral A...

Страница 35: ...IV APPb CrSOUr t bANd t bANd OFFHYS c 100 0 c 0 0 0 1 OFF 3 0 0 1 100 0 0 0 100 0 0 0 25 0 0 0 999 0 50 0 1 0 10 0 25 0 Integral Off Derivative Off 5 10 2 Calculating the Crossover Value Fig 5 18 The crossover value is calculated from the expression Crossover Value 100 Gh Gc 1 Where Gh Gc is the ratio of the two output driver gains The most common method for determining the Gh Gc term is by using ...

Страница 36: ...COUNt 3 ____ Total 3 A HPrC ____ ____ ____ PV3 Units ____ ____ Time tI_E ____ Date dAtE ____ See ____ ____ PV4 Units ____ ____ Only applicable with Timer Option If all Totalizers are off or Totalizer option not fitted Display Channels 2 and 3 Display Channels 3 and 4 CH1 CH2 CH3 CH4 AL1 AL2 AL3 AL4 202 303 Record Faceplate 2 CH1 CH2 CH3 CH4 AL1 AL2 AL3 AL4 303 404 Record Faceplate 3 Reset Total St...

Страница 37: ...Set Up Inputs Page BASIC CONFIGURATION LEVEL Display is blank if NONE is selected Process Variable 3 PV3 Temperature Units for PV3 as set in the Set Up Inputs Page Display is blank if NONE is selected Current Time Time displayed using 24hr clock Only displayed when timer option is fitted Current Date Day and Month Only displayed when timer option is fitted Process Variable 3 PV3 Process Variable 4...

Страница 38: ...next frame Alarm Identity Upper display shows the alarm identity and type Lower Display shows the trip level of the alarm identified in the upper display Acknowledge Alarm Use the switch to acknowledge the alarm When the alarm is acknowledged ACKNGd is displayed and a constant l e d indicates the acknowledged alarm If there are more active alarms on channel 3 the l e d continues to flash until all...

Страница 39: ... stop it Note If the Counter Stop Go is disabled in Set Up Totals Page the frame can be viewed but not altered If a digital signal is assigned to the Totalizer Stop Go source an active digital signal sets the counter to GO and the Counter cannot be stopped from the front panel Front Panel Batch Flow Total 3 4 Repeat the above procedure for Flow Total 3 4 Note The number of totalizers is dependent ...

Страница 40: ... this is not required Analog inputs are slow to respond A large filter time has is set Set digital filter value to give required response in Set Up Inputs Time or date incorrect Not set for correct local time Set correct time and date in Set Up Clock Page refer to Advanced Software Manual Totalizers cannot be set to STOP or GO Operator STOP GO selection is not enabled in the OPERATOR LEVEL Enable ...

Страница 41: ...hart J or R in Code Number Standard Pen C1900 0076 ER C Type Chart J or R in Code Number Event Pen C1900 0078 PX105 and PXR105 Type Chart K or S in Code Number Standard Pen C1900 0075 PX105 and PXR105 Type Chart K or S in Code Number Event Pen C1900 0077 Fuses 24V B11071 4A 115V B11070 1A 230V B11069 500mA True time line event option only 8 SPARES LIST ...

Страница 42: ...40 NOTES ...

Страница 43: ...l and temperature I to P Converters and Field Indicators Flow Metering Magnetic Flowmeters Electromagnetic insertion type probes and watermeters Turbine Flowmeters Wedge Flow Elements Mass Flow Meters Transmitters sensors controllers and batch display units Level Control Submersible Capacitance Conductivity Pneumatic Instrumentation Transmitters Indicating Controllers Recording Controllers Custome...

Страница 44: ...ained herein without notice ABB 1998 Printed in UK 10 98 ABB Kent Taylor Ltd St Neots Cambs England PE19 3EU Tel 44 0 1480 475321 Fax 44 0 1480 217948 ABB Instrumentation Inc PO Box 20550 Rochester New York 14602 0550 USA Tel 1 716 292 6050 Fax 1 716 273 6207 ABB Kent Taylor SpA 22016 Lenno Como Italy Tel 39 0 344 58111 Fax 39 0 344 58278 ...

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