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4.3

Motorized Valve Control

Information.

•

Motorized valve control with or without feedback – position-proportioning (with
feedback) or boundless (without feedback).

•

Ratio and bias settings can be applied to adjust the range of valve travel (position-
proportioning only).

•

Deadband setting – adjustable to minimize hunting of the motorized valve.

CONFIGURATION…

P.I.D. Output

Desired Valve Position

Engineering Range

Ratio Setting

(0.010 to 9.999)

Bias Setting

(within Eng. range)

100

A 1.0

B 0.5

C –25%

B 0%

Ratio

Bias

Proportional

Bandwidth*

A 0%

100%

Valve

Travel

Limits

75%

25%

Valve

Travel

Limits

50%

Valve

Travel

Limits

Valve
Open

Valve

Closed

C 0.5

Fig. 4.2 Position-Proportioning Schematic Diagram

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Содержание C310

Страница 1: ...derutilized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing Rentals Demos In s...

Страница 2: ...Universal Process Controllers C300 and C310 Programming Guide IM C300 PG_7 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 3: ...of an accident occurring when operating in conditions of high pressure and or temperature 5 Chemicals must be stored away from heat protected from temperature extremes and powders kept dry Normal saf...

Страница 4: ...ss Control only 13 4 4 2 Regulator Data Page 14 4 5 Set Up Process Variable 15 4 5 1 Set Up Process Variable Input Page COMMANDER 300 16 4 6 Set Up Remote Set Point Page 20 4 7 Set Up Position Feedbac...

Страница 5: ...e Installation manual includes an Installation Record which should be completed as a log of the electrical installation The record is useful when carrying out initial instrument programming and can be...

Страница 6: ...to return to the Operating Page dISPLY bndLSS PAGE C ProP OUtPUt or C PrOP 100 3 110 5 ACKNLG ALArMS P StAt PAGE PrOFLE StAtES SECOdE PAGE SELF tunE ContrL PAGE PrOFLE PrOGr SEt POINtS POStN F bACK rE...

Страница 7: ...2 A program consists of up to 30 12 for C301 99 for C302 segments Each segment has a starting and finishing set point level giving a maximum of 31 13 for C301 100 for C302 levels For identification pu...

Страница 8: ...ment Set the required value for the segment finish start level The units are display units between display zero and full scale Advance to the next parameter Segment Time Period if more segments are to...

Страница 9: ...rammable Set Point Types Ratio Bias Limits Fixed Set Point 1 Fixed Set Point 2 Digitally Selectable Set Points Adjustable limits Adjustable limits Engineering Range Ratio Setting 0 010 to 9 999 Bias S...

Страница 10: ...tomatically Local Set Point Value Set the value required within the limits set above The decimal point position is set automatically to that set in the Set Up Display Page see Section 4 8 Set Point Tr...

Страница 11: ...Set Point Tracking Enable If Remote Set Point Tracking is enabled and the controller is in Remote mode the Local set point tracks the remote set point When the controller is in Remote Set Point Tracki...

Страница 12: ...tiplies the remote set point input by the ratio value set Set the required remote set point ratio between 0 010 and 9 999 in 0 001 increments Remote Set Point Bias Adjust Enable This frame enables or...

Страница 13: ...t type is changed from Local to Remote or Dual the display shows the difference bALNCE between the Local set point value and the Remote or Dual set point value When Remote set point is selected and if...

Страница 14: ...nimize hunting of the motorized valve 4 CONFIGURATION P I D Output Desired Valve Position Engineering Range Ratio Setting 0 010 to 9 999 Bias Setting within Eng range 100 50 0 A 1 0 B 0 5 C 25 B 0 Rat...

Страница 15: ...ffset as a percentage of the valve travel Set the required feedback bias between 100 0 and 100 0 Deadband Deadband is set as a percentage of the position feedback span between 0 0 and 10 0 to produce...

Страница 16: ...ndefinitely in the absence of raise or lower commands When a deviation from set point is introduced the regulator is driven for a length of time equivalent to the proportional step The regulator is th...

Страница 17: ...g range span to produce a deadband around the control set point value This reduces hunting of the regulator Set the required value between 0 0 and 10 0 Position Feedback Indication Enable Select INdCt...

Страница 18: ...ONFIGURATION Input Type Linearizer Type Linearizer Units Linearizer Range Display Range 5 2 3 2 RTD THC N THC B THC E THC J THC T THC S THC R THC K None Programme Filter F C RTD THC Current Voltage Mi...

Страница 19: ...Thermocouple rtd Resistance thermometer For thermocouple applications using an external fixed cold junction select millivolt input type Linearizer Type Select the linearizer type required NONE No lin...

Страница 20: ...selected at Linearizer Units above within the limits detailed in Table 4 1 If these limits are exceeded LIN Or linearizer overrange is displayed in the Operating Page see Table 5 1a of the Operating G...

Страница 21: ...e minimum in electrical units within the limits detailed in Table 4 2 Broken Sensor Protection Drive In the event of a fault being detected on the input the process variable is driven in the direction...

Страница 22: ...cted O P The controller reverts to Manual mode when an error is detected and the control output value changes to the Default Control Output value following Default Control Output Set the default outpu...

Страница 23: ...T thermocouple tC J Type J thermocouple tC L Type L thermocouple tC E Type E thermocouple tC b Type B thermocouple tC N Type N thermocouple rtd Resistance thermometer SQrt Square root 3 2 x 3 2 5 2 x...

Страница 24: ...te set point is driven according to the Broken Sensor Protection Drive Select the drive required NONE for no drive UP for upscale drive or dN for downscale drive Fault Detection Level Percentage Remot...

Страница 25: ...l point position required for both the position feedback range full scale and range zero values Position Feedback Range Zero Set the position feedback range zero value within the limits of Table 4 2 s...

Страница 26: ...efault action HOLd The controller reverts to Manual mode and holds the valve position existing when the fault was detected Return to top of Set Up Position Feedback Input Page or Advance to Set Up Dis...

Страница 27: ...alues In the example shown above set the decimal point position to show increments of 0 1 bar i e 250 0 Display Zero Set the display value which represents the minimum process variable input signal be...

Страница 28: ...e 4 CONFIGURATION Page header Current Proportioning Output Current Proportioning Output Maximum Set the maximum analog output value between 0 0 and 20 0mA in 0 1mA increments Current Proportioning Out...

Страница 29: ...ram Start End Levels Segment Duration Segment Start End Levels Program Repeat Hysteresis Profile Program Page Refer to Operating Guide Section 4 15 Page 48 Section 4 14 Page 45 These pages are not dis...

Страница 30: ...mal Point Display Page Control Action Display High Low Limits Decimal Point Bar Graph Increment Per Bar Display Units Current Output Page Power Fail Indication Enable Logic Inputs Configured Output Fi...

Страница 31: ...4 6 bNdLSS boundless motorized valve without position feedback If bNdLSS selected the self tune facility is not available and the Self tune Page cannot be accessed see Fig 4 7 Control Mode Select the...

Страница 32: ...oning Analog Output Heat Output Cool Output Process P D Control Terms Process Variable Set Point COMMANDER 300 Open Relay Close Relay Boundless Integral Valve Feedback Process P I D Control Terms Proc...

Страница 33: ...ontrol output value required when power down state is MANUAL and power failure mode is MANUAL Set the control output value required following a power failure between 0 0 and 100 0 in increments of 0 1...

Страница 34: ...t power up at the value set in the Auto to Auto frame or LAST Manual Manual Value set in Manual to Manual Output frame or output value prior to power down if LAST selected Table 4 3 Power up and Power...

Страница 35: ...in Automatic mode If the control output is below this limit when Automatic mode is selected the output is allowed to stay at its current level but is not allowed to go any lower Once the control outpu...

Страница 36: ...t decreases as process variable increases Eng Range 0 100 Direct Acting PV Output increases as process variable increases Output Eng Range ACtN c dir ACtN h rEV HEAtCL Fig 4 8 Heat Cool Control Action...

Страница 37: ...igh Low Limit This limits the high or low level of the Cool control output when in Automatic mode depending on the Control Action Cool frame setting rEV is the low and dIr is the high setting If the c...

Страница 38: ...alue set in Configured Output below unless configured output is set to LASt If F SPt is selected two fixed set points are available see Fixed Dual Set Point 1 and Fixed Dual Set Point 2 below If F SPt...

Страница 39: ...ured Output Select the configured output between 0 0 and 100 0 in 0 1 increments or LASt If AUtMAN is selected for any of the logic inputs above the manual control output equals the Configured Output...

Страница 40: ...f process variable alarms Adjustable hysteresis value to prevent oscillation of alarm state 4 CONFIGURATION High Output Low Output Control Output Trip Point Alarm On Alarm Off Alarm On Alarm Off Hyste...

Страница 41: ...ive Trip Process Variable Hysteresis Value Low Deviation Positive Trip Value Alarm Off Alarm On Control Set Point Low Deviation Positive Trip Process Variable Hysteresis Value Low Deviation Negative T...

Страница 42: ...takes for the alarm state to be cleared once the alarm condition has been removed is also equal to T 1800 Trip Value Alarm On Alarm Off Falling Fast Rate Alarm On Alarm Off Rising Fast Rate 10 1 1 ho...

Страница 43: ...signed to the alarm identity selected above Refer to Figs 4 9 to 4 13 Select the alarm type NONE no alarm function HPrC high process LPrC low process HdEV high deviation LdEV low deviation HOUt high o...

Страница 44: ...is Dual set point PVFAIL process variable failure rSFAIL Remote set point failure PNFAIL position feedback failure INFAIL any input failure P HOLd alarm activated when program is on Hold Profile only...

Страница 45: ...ression is satisfied Alarm Relay 2 Assignment Up to 6 of the 10 alarms can be assigned to alarm relay 2 using a logic expression of up to 12 characters r logic OR n logic AND are brackets and W is the...

Страница 46: ...10 Up to 6 of the 10 alarms can be assigned to alarm relay 4 using a logic expression of up to 12 characters r logic OR n logic AND are brackets and W is the terminator Select the next character in th...

Страница 47: ...inimum Set the minimum retransmission value between 0 0mA and 20 0mA in 0 1mA increments Return to top of Retransmission Output Page or Advance to Scale Adjustment Page Page Header Cool Output Page Co...

Страница 48: ...ameters 50 of range span value when using Span Adjustment parameters 4 CONFIGURATION Page header Scale Adjustment Process Variable Scale Adjustment Reset Set YES and press to reset the process variabl...

Страница 49: ...o indicate that these parameters have been reset Remote Set Point Offset Adjustment Proceed as for Process Variable Offset Adjustment frame and apply the correct input for the spot calibration require...

Страница 50: ...at set in Position Feedback Range Zero frame in the Set Up Position Feedback Page If this value cannot be reached adjust the value in Position Feedback Range Zero frame to bring it within the offset b...

Страница 51: ...ord enables access to all programming pages Security Level 2 Set the required password between 0 and 1999 Tuning Password The tuning password enables access to the Self tune Control Profile States and...

Страница 52: ...s Page Header Set Up Process Variable Input Process Variable Input Type Select the input type required MU Lt Millivolt 2000 mV MAMP Current V OLt Voltage ohM Resistance tCPL Thermocouple rtd Resistanc...

Страница 53: ...s Ohms or Volts for the break point selected above It is not necessary to enter all 20 break points The instrument ignores any break point that has an electrical value lower than the previous one and...

Страница 54: ...offset at 50 C122 F in microVolts This feature allows automatic temperature compensation of thermocouple inputs Broken Sensor Protection Drive In the event of a fault being detected on the input the p...

Страница 55: ...lt NONE No default action HOLd The controller reverts to Manual mode when an error is detected The control output is held at the value existing when the error was detected O P The controller reverts t...

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