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Overview

CYCLE-TIME

The choice of cycle-time is influenced by the external  switching

device or load. e.g. contactor, SSR, Valve. A setting that is too long

for the process will cause oscillation and a setting that is too short

will cause unnecessary wear to an electro-mechanical switching

device.

Cycle-time selection methods

The following methods of cycle-time selection may be used:

Autotune calculated 

After 

Autotune

has been run and completed the calculated cycle-

time can be manually accepted or adjusted to suit the switching

device. For selection method see

Select Autotune Calculated

Cycle-time

.

Pre-select autotune cycle-time

The controller can be programmed to automatically accept the

calculated 

Autotune

cycle-time. For selection method see 

Pre-

Select Automatic Acceptance of Any Autotune Cycle-time

.

Pre-select before autotune

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 Before Autotune

.

Factory set

To use the 20 sec 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 ACCURACY  

Functions and options

The facilities of the controller are selected from the multi-level menu

using the front panel mounted buttons.

Note:

It is advisable to study this section before any

programming is undertaken.

Each level within the multi-level menu offers different functions, see

FUNCTIONS MENU

for menu of main functions. Each function has a

range of user selections or options, see 

FUNCTION LIST

for

functions and options details.

The controller has two modes, program mode and operating mode.

When in program mode the controller can be programmed with

settings and functions to suit the application. When in operating

mode the controller uses the setting and functions entered in the

program mode to control the application and also displays both the

process variable and setpoint temperatures. For full details on how

to program the controller see 

VIEWING AND SELECTING

FUNCTIONS.

Note:

In this manual the letter k is represented by the

character

K

4

Содержание CN9400

Страница 1: ...http www omega com e mail info omega com User sGuide CN9400 Dual Display Autotune Temperature Controller...

Страница 2: ...MMER 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 MESSAGES 14 Recommenda...

Страница 3: ...RICAL INSTALLATION P29 P30 It is the responsibility of the installation engineer to ensure this equipment is installed as specified in this manual and is in compliance with appropriate wiring regulati...

Страница 4: ...y Off on C O M M S S E T T I N 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 m...

Страница 5: ...uration into controller memory Press and hold both and buttons for 3 seconds The upper display will now alternate ParK and measured variable temperature eg 23 ParK is displayed because a setpoint has...

Страница 6: ...ed software package designed for PC supervision of up to 32 instruments for remote adjustment configuration cloning saving and retrieving settings to files and logging and charting in real time CN9 SW...

Страница 7: ...oller 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 The results are meas...

Страница 8: ...lect Cycle time Before Autotune Factory set To use the 20 sec factory set cycle time no action is needed whether Autotune is used or not Further information can be programmed into the controller see S...

Страница 9: ...Relay and Dual SSd Output Options Models CN9411 and CN9422 have their outputs pre configured see page 22 Press and release the button the controller will now display Press and hold the button and usin...

Страница 10: ...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 level within the multi level menu of...

Страница 11: ...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 changed...

Страница 12: ...s temperature is displayed The PID values are entered automatically The process temperature will rise to setpoint and control should be stable If not this may be because optimum cycle time is not auto...

Страница 13: ...ller 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 Before Autotune...

Страница 14: ...isplayed in the lower display Note A indicates that no cycle time exists Press and hold to scroll to tunE The controller will now display Press and hold the button and use to select either on or At SP...

Страница 15: ...o scroll to 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 controlle...

Страница 16: ...he 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 Sele...

Страница 17: ...ON 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 The annunciator may be d...

Страница 18: ...point entered Action Enter setpoint 2 SP1 set to ON OFF in Action Select proportional mode Note To reset and clear error press together briefly to cancel message FAIL LATER DURING AUTOTUNE CYCLE The t...

Страница 19: ...nd the variance deviation maximum and minimum temperature are displayed and constantly updated in Using the CheK Control accuracy monitor To start the monitor select Note During monitoring either retu...

Страница 20: ...s the cycling of on off control Heater power is reduced by time proportioning action across the proportional band Function Options Factory settings shown in brackets oFF 0 1 to 60 minutes 5 0 SP1 inte...

Страница 21: ...he ramp rate on oFF hoLd Switches the ramp on or off or hold at last ramp value oFF 0 to 1440 min Sets the soak time SP2 OPERATING PARAMETERS see pages 12 13 Function Options Factory settings shown in...

Страница 22: ...limit cooling SP2 OPERATING MODES see page 12 13 nonE dV hi dV Lo bAnd FS hi FS Lo Cool Main SP2 operating mode Function Options Factory settings shown in brackets nonE LtCh hoLd nLin Subsidiary SP2 m...

Страница 23: ...eating and Direct for cooling applications 19 LEVEL 3 OUTPUT CONFIGURATION Note Read only after initial configuration rSET ALL full reset to factory settings required to change subsequently Function O...

Страница 24: ...25 0 0 to 25 sensor f s Zero sensor error see SPAn oFF on Select control accuracy monitor Var hi Lo Read control accuracy monitor 20 LEVEL 3 continued Function Options Factory settings shown in bracke...

Страница 25: ...ons and options may be read Function Options Factory settings shown in brackets Press to access following functions Auto StAY Program mode auto exit switch Auto exit returns display to normal if 60 se...

Страница 26: ...e 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...

Страница 27: ...egy 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 adjus...

Страница 28: ...in Multi zone applications 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 t...

Страница 29: ...linear inputs 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 Vd...

Страница 30: ...d 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 the controller and in re...

Страница 31: ...el assembly rated NEMA4 IP66 provided that the panel is smooth and the panel cutout is accurate the mounting instructions are carefully followed DIN PANEL CUTOUT 1 16 DIN panel cutout size 45 0mm 0 6m...

Страница 32: ...mly by 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...

Страница 33: ...CN9411 Output Device 2 Output Device 3 DUAL SSd MODEL CN9422 Output Device 1 Output Device 1 Dual relay or dual SSd model options CN9411 CN9422 are fully detailed on page 22 ELECTRICAL INSTALLATION 29...

Страница 34: ...ctive 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 disconne...

Страница 35: ...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 36: ...utes 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 250ac resis...

Страница 37: ...ification misapplication misuse or other operating conditions outside of OMEGA s control Components which wear are not warranted including but not limited to contact points fuses and triacs OMEGA is p...

Страница 38: ...es Tel 33 130 621 400 FAX 33 130 699 120 Toll Free in France 0800 4 06342 e mail france omega com Servicing Europe USA and Canada Sales Service 1 800 826 6342 1 800 TC OMEGASM Customer Service 1 800 6...

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