Honeywell dcp100t Operator'S Manual Download Page 35 | Manualshive

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Figure 9-3

Alarm Hysteresis

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Summary of Contents for dcp100t

Page 1: ...EN1I 6240 ...

Page 2: ......

Page 3: ...Associated Documents Title Document No DCP 100T Digital Controller Programmer Installation ManualEN1I 6241 In normal operation the operator must not remove the controller from its housing or have unrestricted access to the rear terminals as this would provide potential contact with hazardous live parts Installation and configuration must be undertaken by technically competent servicing personnel T...

Page 4: ...Running a Program 3 1 3 2 Changing the Program Timebase 3 1 3 3 Holding a Program Manually 3 1 3 4 Jumping to the Next Segment 3 1 3 5 Viewing Program Progress Status 3 2 3 6 Aborting a Program 3 3 3 7 End of Program Indication 3 3 3 8 Viewing Program and Controller Parameters 3 3 4 ADJUSTING THE SETPOINT 4 1 5 USING THE SELF TUNE FACILITY 5 1 6 USING THE PRE TUNE FACILITY 6 1 7 MANUAL CONTROL 7 1...

Page 5: ...de 8 8 9 DEFINING THE CONTROLLER PARAMETERS CONTROLLER DEFINE MODE 9 1 9 1 Controller Parameters 9 2 9 2 Base Mode Displays 9 10 9 3 Loop Alarm And Loop Alarm Time 9 10 9 4 Exiting Controller Define Mode 9 11 Illustrations Figure 2 1 Front Panel Controls 2 1 Figure 2 2 Front Panel Indicators 2 2 Figure 2 3 Front Panel Displays 2 3 Figure 2 4 Alarm Status Display 2 4 Figure 8 1 Guaranteed Soak Oper...

Page 6: ...change currently running program segment Delayed Start of Program facility End of Program relay output Universal input thermocouple RTD Pt100 or DC linear user selectable Universal power supply 90 264V ac 50 60Hz Configurable from front panel Comprehensive front panel displays Front panel sealing to NEMA 4 standard Behind panel depth only 100mm Optional features include Remote control and selectio...

Page 7: ... or waiting for a pre defined delay before starting In this mode the operator can view status and program information Program Define Mode 1 Used to view create edit programs This mode is entered either from Base Mode selected program may be edited created or from Program Run Mode currently running program may be edited Controller Define Mode 2 Used to define the Controller characteristics 1 2 1 En...

Page 8: ...nts displayed parameter value cycles through options Down key Decrements displayed parameter value cycles through options Program key Cycles through Program Numbers Run Hold key Runs holds or aborts current program Selects de selects Self Tune and Pre Tune when Message Display shows appropriate message Jumps to next segment when a program is running Selects de selects Manual Control see Section 7 ...

Page 9: ...D ON also program held Flashing Program in Delayed state HLD ON Program Held Flashing Program in Guaranteed Soak x60 OFF Timebase hours minutes ON Timebase minutes seconds 2 2 3 Event Indicators Each indicates the status active or inactive of a user defined event OFF inactive ON active 2 2 4 Mode Indicators SET ON when Controller Define Mode or Program Define Mode is entered flashes when viewing p...

Page 10: ...2 3 DISPLAYS 2 3 Figure 2 2 Front Panel Displays ...

Page 11: ...rm 2 5 VIEWING PROGRAM AND CONTROLLER PARAMETERS In Base Mode i e with no program currently running or held the MODE key gives view only access to Program Define Mode and Controller Define Mode 2 4 Figure 2 3 Alarm Status Display Appears only if the Loop Alarm is active Appears only if Alarm 2 is active Appears only if Alarm 1 is active VIEW ONLY VIEW ONLY See Section 8 See Section 9 ...

Page 12: ... freeze a program by momentarily pressing the Run Hold key The HLD indicator will then go ON the RUN indicator staying ON and the program will stop execution The program may subsequently be restarted by momentarily pressing the Run Hold key again HLD INDICATOR FLASHING If before the operator holds the program manually the HLD indicator starts flashing this indicates that the program is currently s...

Page 13: ...or delayed press the SET UP key to cycle through a sequence of program status displays with the following legends in the Message Display In the case of Segment Time Remaining or Guaranteed Soak Time display the time is in hours minutes if the x60 indicator is OFF or minutes seconds if the x60 indicator is ON The Delay Time display is always in hours minutes NOTE If the SET UP key is held for two s...

Page 14: ...ow This message will be removed by the next keypress 3 7 END OF PROGRAM INDICATION When the program has reached its End Marker the Message Display shows and a return is made to Base Mode 3 8 VIEWING PROGRAM AND CONTROLLER PARAMETERS In Program Run Mode i e with a program currently running or held the MODE key gives view only access to Program Define Mode and Controller Define Mode 3 3 VIEW ONLY VI...

Page 15: ... display and the setpoint value lower display Read Only To change the setpoint value 1 Press the SET UP key the Message Area will display one of whichever is appropriate to the input range used 2 Use the Up and Down keys to change the setpoint value in the lower display as required 3 When the setpoint value is set as desired press the SET UP key again to return to the initial display 4 1 ...

Page 16: ...ode with the RUN and HLD indicators OFF press the SET UP key until the Message Display shows and the lower Main Display shows 2 Press the MODE and Up keys to change the lower Main Display to indicating that the Self Tune facility is now activated To de activate the Self Tune facility press the SET UP key to obtain the same Message Display as above then press the MODE and Up keys simultaneously to ...

Page 17: ... shows 2 Press the MODE and Up keys to change the lower Main Display to indicating that the Pre Tune facility is now activated NOTES 1 If the process variable is within 5 of the input span from the setpoint the Pre Tune facility cannot be activated and any attempt to do so will have no effect 2 Since the Pre Tune facility is a single shot operation it will automatically de activate itself once the...

Page 18: ...power output value which may then be adjusted using the Up and Down keys Whilst manual control is being exercised the power output display is included in the displays available in Base Mode and Program Run Mode To cancel manual control press the SET UP and MODE keys simultaneously whereupon the power out value display and the Power Message Display will disappear and the Digital Controller Programm...

Page 19: ...n 9 and then b to show a Message Display To return to Program Define Mode and re start the Program Define Controller Define Exit display cycle press the MODE key to return to Base Mode press the SET UP key If an incorrect lock value is entered a return is made to Base Mode Program parameters are divided into three categories a Those common to all programs global parameters b Those common to all se...

Page 20: ...f no Real Time Clock 0 00 or Time 0 01 24 00 if Real Time Clock fitted 0 00 Cold Start 2 1 00 or Time Warm Start 3 RTC Time 4 Defines Real Time Clock initial setting hours minutes 0 10 24 00 RTC Day 4 Defines Real Time Clock initial setting day of week Sun Mon tuE Wed thu Fri or SAt External Selection Defines functions which may be controlled externally No external selection Program selection only...

Page 21: ...d on ramps only on soaks only or on both ramps and soaks On ramps and soaks On soaks only On ramps only Pre x60 Defines whether the timebase for the program is pre selected to be hours minutes or minutes seconds NOTE This parameter setting is over ruled by the external x60 input No pre selection Minutes seconds Hours minutes Timer RTC only Selects de selects timer control of program Timer control ...

Page 22: ...8 4 Figure 8 1 Guaranteed Soak Operation ...

Page 23: ...m 5 J06 Join to Program 6 J07 Join to Program 7 J08 Join to Program 8 REP Repeat Marker End End Marker Event 2 Defines the states of the four Event Outputs for this segment Four bit binary number 0 inactive 1 active 8 5 Program Number 1 to 8 Segment Number 1 to 16 Event 1 Event 2 Event 3 Event 4 1 If a segment is set to be a Join Marker a Repeat Marker or an End Marker the next depression of the S...

Page 24: ...ng End Markers or longer by creating program sequences with Join Repeat and End Markers The only limit to the size of a program sequence is a maximum length of 121 active segments plus seven Join Markers plus one End Marker i e all eight programs joined to make one program sequence Segments follow a free format in that ramp or dwell can be followed by dwell or ramp completely as desired Consider t...

Page 25: ...onsider the case in which Program 1 is set to perform two cycles and is joined to Program 2 When Program 1 is run the result would be If Program 2 were now set to perform ten cycles the result would be Now with Program 2 set to perforn ten cycles if the End Marker of Program 2 were changed to a Repeat Marker Segment Time Ramp Rate set to REP the result would be 8 7 PROGRAM 1 5 active segments 1 En...

Page 26: ...re ending the sequence A program ending in an End Marker hence by definition the last program in the sequence will perform its cycle count on the entire program sequence before ending that sequence 8 7 EXITING PROGRAM DEFINE MODE The operator may exit from Program Define Mode by pressing the MODE key until the Exit prompt appears in the Message Display then pressing the SET UP key which will cause...

Page 27: ...Base Mode or Program Run Mode 3 Press the MODE key If the instrument has been configured to have only one Lock Code entry into Controller Define Mode is immediate and no further action is needed If the instrument is configured to have two Lock Codes one for Program Define Mode one for Controller Define Mode the Lower Main Display will show 0 and the Message Display will show 4 Use the Up and Down ...

Page 28: ...r Current Output 1 power level Read only not adjustable Output 2 Power 2 Current Output 2 power level Read only not adjustable Proportional Band 1 PB1 Portion of input span in which Output 1 power level is proportional to the offset process variable value see Figure 9 1 0 0 ON OFF Control to 999 9 of input span Default 10 0 Proportional Band 2 PB2 Portion of input span in which Output 2 power leve...

Page 29: ...vel Time plus 10 seconds Default 1 minute Recorder Output Scale Maximum 7 The value of the process variable or setpoint as applicable for which the recorder output is at a maximum 1999 to 9999 decimal point as for the process variable input range Default Input Range Maximum Recorder Output Scale Minimum 7 The value of the process variable or setpoint as applicable for which the recorder output is ...

Page 30: ...er than this value the alarm becomes active see Figure 9 2 input range from setpoint Default 5 input range units Alarm 1 Hysteresis Value Defines a hysteresis band on the safe side of the Alarm 1 value see Figure 9 3 1 LSD to 10 of input span 0 is an invalid value Process High Alarm 2 Value If Alarm 2 is a Process High Alarm the value of the process variable at or above which Alarm 2 will become a...

Page 31: ...nutes 59 seconds Default 99 minutes 59 seconds Scale Range Decimal Point 9 For linear inputs defines the decimal point position 0 XXXX 1 XXX X Default 2 XX XX 3 X XXX Scale Range Maximum 9 For linear inputs defines the scaled input value when the process variable input is at its maximum value 1999 to 9999 decimal point position as defined by Scale Range Decimal Point parameter see above Default 10...

Page 32: ...or ON OFF control on Output 1 only Diff 2 for ON OFF control on Output 2 only and Diff for ON OFF control on both Output 1 and Output 2 6 Internal software prevents a the Setpoint High Limit being given a value less than any setpoint value contained in the currently resident programs and b the Setpoint Low Limit being given a value greater than any setpoint value contained in the currently residen...

Page 33: ...9 7 Figure 9 1 Proportional Band and Deadband Overlap ...

Page 34: ...9 8 Figure 9 2 Alarm Operation ...

Page 35: ...rocess Alarm Inactive Alarm Active Alarm Inactive Hysteresis Band Hysteresis Band Process Alarm Value Alarm Setpoint Alarm Inactive Alarm Inactive Alarm Active Alarm Active Alarm Inactive Band Alarm Deviation Setpoint Hysteresis Band Alarm Inactive Alarm Active Alarm Inactive Process Alarm Setpoint Hysteresis Alarm Value Alarm Inactive Alarm Active Alarm Inactive Process Variable ...

Page 36: ...es active Subsequently the Loop Alarm facility repeatedly checks the process variable and the control output s When the process variable starts to change value in the correct sense or when the saturated output comes out of saturation the Loop Alarm is de activated For PID control the Loop Alarm Time T is always set to twice the value of the Reset Integral Time Constant parameter For On Off control...

Page 37: ... parameter is omitted from the display sequence if ON OFF control is not selected or Loop Alarm is disabled The default setting is 99 59 9 4 EXITING CONTROLLER DEFINE MODE The operator may exit from Controller Define Mode by pressing the MODE key until the Exit prompt appears in the Message Display then pressing the SET UP key which will cause a return to the mode from which entry was made NOTE An...

Page 38: ...efine Mode Automatic exit from 9 11 Entry from Base Mode or Program Run Mode 9 1 Entry from Program Define Mode 9 1 Exit from 9 11 Indication of entry 9 2 Controller Define Mode Parameters Read Only access from Base Mode 2 4 Read Only access from Program Run Mode 3 3 D Deadband 9 2 Delay State Indication of 3 1 Delay Time 8 2 Delay Time Remaining Display of 3 2 Derivative Time Constant 9 2 Down ke...

Page 39: ... Time 9 3 N Next Segment Jump to 2 1 3 2 Number of Cycles Completed Display of 3 2 O ON OFF Differential 9 3 Output 1 Cycle Time 9 3 Output 1 Power 9 2 Output 2 Cycle Time 9 3 Output 2 Power 9 2 Output Power Limit 9 3 Overlap 9 2 P Power Fail Recovery 8 2 Pre Tune Facility Limitations on use 6 1 Selection de selection 2 1 6 1 Status display 3 2 Process Variable Offset 9 2 PROG key Function 2 1 Pro...

Page 40: ...ion of 8 6 Reset 9 2 RTC Day 8 2 RTC Time 8 2 Run Hold key Function 2 1 S Scale Range Decimal Point 9 5 Scale Range Maximum 9 5 Scale Range Minimum 9 5 Segment Time Remaining Display of 3 2 Self Tune Facility Selection de selection 2 1 5 1 Status Display 3 2 SET UP key Function 2 1 Setpoint Adjustment of 4 1 Setpoint High Limit 9 3 Setpoint Low Limit 9 3 Soak Segment Setting of 2 1 Start On parame...

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