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Improving Control Accuracy

IMPROVING CONTROL ACCURACY

Temp

Maximum

Time

Variance

VAr

0.1

Minimum

The following functions are to assist engineers with
machine development, commissioning and troubleshooting.

SP1.P

READ SP1 OUTPUT PERCENTAGE POWER

Poor control may be due to incorrectly sized heaters.

SP1.P

(Level 2) constantly displays the output

percentage power applied, which at normal setpoint should
ideally be within 20 - 80% to achieve stable control.

CHEK

CONTROL ACCURACY MONITOR

This measures the control stability, to within 0.1 °C/°F.

The monitor is started using

CHEK

(Level 3) and the

variance (deviation), maximum and minimum temperatures
are displayed and constantly updated in

READ

Using the

CHEK

Control accuracy monitor

To start the monitor select

CHEK

Note:

During monitoring either return to normal operation
or remain in program mode.

To view monitor readings: index to

READ

The display will alternate between

READ

and

Var°

Press and hold

✱

, the display will alternate between

Var°

and the variance displayed in degrees (e.g. 0.6)

Press and hold

✱

and press

▲

once, the display will

alternate between

VAr°

and the maximum

hi°

displayed

in degrees (e.g. 320.3)

Press and hold

✱

and press

▲

once, the display will

alternate between

VAr°

and the minimum

Lo°

displayed

in degrees (e.g. 319.7)

CHEK

oFF

stops monitor retaining readings

CHEK

resets readings.

On de-powering

CHEK

resets to

oFF

and

READ

is zeroed.

Содержание CALCOMMS 3300

Страница 1: ...Operating Manual CAL Controls Temperature Controllers CAL 3300 and 9300 Autotune Temperature Controllers...

Страница 2: ...ycle time 9 PROGRAMMER 11 Ramp Soak 11 SECOND SETPOINT SP2 12 SP2 as an alarm 12 SP2 subsidiary mode 13 SP2 as a proportional output 13 SP2 alarm condition table 13 SP2 alarm annunciator 13 ERROR MESS...

Страница 3: ...ect critical functions from tampering ULTIMATE SAFETY ALARMS Do not use SP2 as the sole alarm where personal injury or damage may be caused by equipment failure WARRANTY CAL Controls warrant this prod...

Страница 4: ...G S P R O G R A M M E R S E T T I N G S S P 2 S E T T I N G S HAND PL 1 PL 2 SP2 A SP2 B DISP HI SC LO SC INPT UNIT LEVL 2 SP1 P Read SP1 output 0 to 100 read only SP1 manual output 0 to 100 proporti...

Страница 5: ...ed out from a black background and options are shown in bold italic eg TUNE and ParK Q u i c k S t a r t Note In this manual the letter k is represented by the character K 1a Note During the following...

Страница 6: ...nd SSd Q u i c k S t a r t QUICK START 1b 4 To enter initial configuration into controller memory Press and hold both and buttons for 3 seconds The display will now alternate ParK and measured variabl...

Страница 7: ...llers and the easy to use CALCOMMSTM is a graphic WINDOWSTM based software package designed for PC supervision of up to 32 instruments for remote adjustment configuration cloning saving and retrieving...

Страница 8: ...lication the controller will need to be tuned using the built in AUTOTUNE feature Autotune teaches the controller the main characteristics of the process and learns by cycling the output on and off Th...

Страница 9: ...factory set cycle time no action is needed whether Autotune is used or not Further information can be programmed into the controller see SECOND SETPOINT RANGING AND SETPOINT LOCK IMPROVING CONTROL AC...

Страница 10: ...ately display selected range eg C and unit 3 TO SELECT SP1 Main setpoint output device Note Dual Relay and Dual SSd Output Options Models 3311 9311 and 3322 9322 have their outputs pre configured see...

Страница 11: ...ds to return to display mode check the Menu Navigation summary above and try again The facilities of the controller are selected from the multi level menu using the front panel mounted buttons Each le...

Страница 12: ...may be too close to ambient to produce good results when the process is already hot and the cooling rate is slow when controlling multi zone or heat cool applications to re tune if the setpoint is ch...

Страница 13: ...rocess temperature will rise to setpoint and control should be stable If not this may be because optimum cycle time is not automatically implemented To set the cycle time see PROPORTIONAL CYCLE TIME T...

Страница 14: ...ne The controller can be programmed manually with any cycle time between 0 1 and 81 sec This cycle time will not be changed by any Autotune functions For selection method see Pre Select Cycle time Bef...

Страница 15: ...nd A is displayed Note A indicates that no cycle time exists Press and hold to scroll to TUNE The controller will now alternately display TUNE and oFF Press and hold the button and use to select eithe...

Страница 16: ...roll to SPRN Press and hold then press to select On Exit program to enter settings into memory and commence ramp to target setpoint Notes In Ramp on configuration if power is removed from the controll...

Страница 17: ...en the temperature rises above setpoint to a pre set temperature above scale minimum FS Lo sets off alarm signal when the temperature falls below setpoint to a pre set temperature above scale minimum...

Страница 18: ...N STATES IN ALARM CONDITION SP2 ALARM ANNUNCIATOR When an SP2 alarm mode is selected in SP2 A the alarm annunciator AL is displayed alternating with the process temperature during alarm condition Note...

Страница 19: ...setpoint 2 SP1 set to ON OFF in CYC T Action Select proportional mode Note To reset and clear error press together briefly to cancel message FAIL LATER DURING AUTOTUNE CYCLE The thermal characteristic...

Страница 20: ...he variance deviation maximum and minimum temperatures are displayed and constantly updated in READ Using the CHEK Control accuracy monitor To start the monitor select CHEK on Note During monitoring e...

Страница 21: ...eresis 25 sensor maximum Proportional control eliminates the cycling of on off control Heater power is reduced by time proportioning action across the proportional band INT T oFF 0 1 to 60 minutes 5 0...

Страница 22: ...o 9995 deg hour Sets the ramp rate SPRN on oFF hoLd Switches the ramp on or off or hold at last ramp value SOAK oFF 0 to 1440 min Sets the soak time SP2 OPERATING PARAMETERS see pages 12 13 SET 2 0 to...

Страница 23: ...SP2 percentage power limit cooling SP2 OPERATING MODES see page 12 13 SP2 A nonE dV hi dV Lo bAnd FS hi FS Lo Cool Main SP2 operating mode SP2 B nonE LtCh hoLd nLin Subsidiary SP2 mode latch sequence...

Страница 24: ...ect Reverse Select Reverse on SP1 for heating and Direct for cooling applications 19 LEVEL 3 OUTPUT CONFIGURATION Note Read only after initial configuration rSET ALL full reset to factory settings req...

Страница 25: ...GS page 24 25 ZERO 0 0 to 25 sensor f s Zero sensor error see SPAn CHEK oFF on Select control accuracy monitor READ Var hi Lo Read control accuracy monitor 20 LEVEL 3 continued TECH Ct A CT b Ct 1 Ct...

Страница 26: ...ks all functions unrestricted LEVL VEr TECH SP LK Note Locked functions and options may be read Press to access following functions PROG Auto StAY Program mode auto exit switch Auto exit returns displ...

Страница 27: ...ability to change the allocation of SP1 to terminals 5 and 6 To make this selection during the initial configuration in either QUICK START page 1b or SET UP page 5 start from step 3 3 TO SELECT SP1 Ma...

Страница 28: ...strategy is to maintain smooth control of the process during transition from heating to cooling This is achieved by using PID control for heating and cooling with the proportioning bands linked by an...

Страница 29: ...lications When tuning multi zone applications like extruders distortions due to thermal interaction between adjacent zones can be minimised by running autotune on all controllers at the same time CALI...

Страница 30: ...are in mV If your transducer provides an output in mA this should be converted to mV by feeding the controller input via a high stability one ohm resistor see figure page 26 Other low Vdc signals can...

Страница 31: ...is the same at each end and enter this plus or minus value as a ZERO adjustment Should there be a difference between the two readings a further adjustment of the SPAN setting can be made 1 Power up t...

Страница 32: ...mounting instructions are carefully followed DIN PANEL CUTOUT SIZES 1 32 DIN panel cutout size 45 0mm 0 6mm 0 0mm 1 77in 0 02in 0 0in wide 22 2mm 0 3mm 0 0mm 0 87in 0 01in 0 0in high 9 5mm 0 374in max...

Страница 33: ...the recesses on each side and pull A screwdriver can be used as a lever if required 4 When refitting the bezel assembly it is important to press it firmly into the sleeve until the latch clicks in ord...

Страница 34: ...311 Output Device 2 Output Device 3 DUAL SSd MODELS 3322 9322 Output Device 1 Output Device 1 Dual relay or dual SSd model options 3311 3322 and 3322 9322 are fully detailed on page 22 ELECTRICAL INST...

Страница 35: ...earth or not be accessible Live parts should not be accessible without the use of a tool When fitted to the final installation an IEC CSA APPROVED disconnecting device should be used to disconnect bot...

Страница 36: ...Crosil NiSil 0 25 tc r R 0 to 1600 C 32 to 2912 F Pt 13 Rh Pt 2 0 tc s S 0 to 1600 C 32 to 2912 F Pt 10 Rh Pt 2 0 tc t T 200 250 C 273 482 F Copper Con 0 25 Resistance thermometer rtd 200 400 C 273 75...

Страница 37: ...ter 15 minutes settling time Output devices SSd SSd1 SSd2 solid state relay driver To switch a remote SSR 5Vdc 0 15 15mA non isolated Miniature power relay form A SPST contacts AgCdO rLY and rLY1 2A 2...

Страница 38: ...or written permission from CAL Controls Ltd Whilst every effort has been made to ensure the accuracy of the specifications contained in this manual due to our policy of continuous develpment CAL Contr...

Страница 39: ...Mead Road Hitchin Herts SG5 1RT UK Tel 44 0 1462 436161 Fax 44 0 1462 451801 email support cal controls co uk http www cal controls com CAL Controls Inc 1580 S Milwaukee Avenue Libertyville IL 60048...

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