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Omega Engineering CN9400 manuel d'utilisation

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Table des matières du manuel d’utilisation

  • Page 1

    http://www .omega.com e-mail: info@omega.com ® U ser ’ s Guide CN9400 Dual Display Autotune T emperature Contr oller omega.com TM OMEGA ® OMEGAnet SM On-Line Service Internet e-mail http://www .omega.com info@omega.com It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that apply . OMEGA is constantly pursuing[...]

  • Page 2

    Safety Information SAFETY INFORMA TION INST ALLA TION Designed for use: UL873 - only in products where the acceptability is determined by Underwriters Laboratories Inc. EN61010-1 / CSA 22.2 No 1010.1 - 92 T o offer a minimum of Basic Insulation only . Suitable for installation within Catagory II and III and Pollution Degree 2. SEE ELECTRICAL INST A[...]

  • Page 3

    Safety Information SAFETY INFORMA TION INST ALLA TION Designed for use: UL873 - only in products where the acceptability is determined by Underwriters Laboratories Inc. EN61010-1 / CSA 22.2 No 1010.1 - 92 T o offer a minimum of Basic Insulation only . Suitable for installation within Catagory II and III and Pollution Degree 2. SEE ELECTRICAL INST A[...]

  • Page 4

    FUNCTIONS MENU Functions Menu INSTRUMENT ADJUSTMENTS T o enter or exit program mode : Press ▲ ▼ together for 3 seconds T o scroll through functions : Press ▲ or ▼ T o change levels or options : Press ✱ ▲ together or ✱ ▼ together T o view setpoint: Press ✱ T o increase setpoint: Press ✱ ▲ together T o decrease setpoint: Press ?[...]

  • Page 5

    2 Select unit. Press and hold ✱ and use the ▲ or ▼ buttons to scroll through the unit selection list until the correct unit is displayed. Release the buttons. The display will read selected unit e.g. Press ▲ once The display will now read 3 Select SP1 (Main setpoint output device) Note: Dual Relay and Dual SSd Output Options Models CN9411 a[...]

  • Page 6

    Introduction INTRODUCTION The CN9400 is a 1/16 DIN dual display , dual output miniature controller with PID control strategy . Control can be optimised with a single shot autotune either on initial warm-up or at setpoint. The second setpoint can be configured in a variety of alarm modes or PID Heat-Cool strategy . A programmer offers a single ramp [...]

  • Page 7

    Overview OVER VIEW INST ALLA TION The Model CN9400 controller is designed to be mounted in a 1/16 DIN panel cut-out. See the INST ALLA TION section. SET -UP After installation the controller requires programming with the following information: T ype of Input Sensor Operating unit (C or F etc) T ype of Output Device T emperature Setpoint Note: The c[...]

  • Page 8

    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 [...]

  • Page 9

    Set-up SET -UP 5 This section details the four step initial configuration that enables control with factory PID settings to start, once the setpoint has been entered. POWER-UP On power -up the controller will display the self test sequence and brief display blanking 1 SELECT INPUT SENSOR Press and hold ✱ and use either the ▲ or ▼ buttons to s[...]

  • Page 10

    Menu Navigation MENU NA VIGA TION T o change an option value or setting Press and hold the ✱ button, then press ▲ to increase or ▼ to decrease the value or select the next option. Note: Check the new option value before moving to another function or exiting program mode. T o change levels Press and hold ▼ to scroll through the functions unt[...]

  • Page 11

    Autotune AUTOTUNE Select the most appropriate method of Autotune , T une or T une at Setpoint, to suit the application. Note: The proportional cycle-time can be pre-selected before starting Autotune, see PROPORTIONAL CYCLE-TIME . The TUNE program should be run with the load cool. The output is cycled at 75% of the setpoint value to avoid any oversh[...]

  • Page 12

    Autotune The TUNE A T SETPOINT program will now start. The upper display will alternate tune and the process temperature. The lower display will read the setpoint value. Note: During tuning the main setpoint (SP1) LED will flash. When the TUNE A T SETPOINT program is complete the upper alternating display stops and only the process temperature is d[...]

  • Page 13

    Proportional cycle-time The choice of cycle-time is influenced by the external switching device or load. eg. 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 metho[...]

  • Page 14

    If this cycle-time is suitable press and hold both ▲ and ▼ buttons for 3 seconds to enter it into the controllers memory . If the calculated cycle-time is not compatible with the switching device press and hold the ✱ button then press and hold ▲ or ▼ until a more suitable cycle-time is displayed. Release the buttons, then press and hold b[...]

  • Page 15

    Programmer RAMP-SOAK This feature enables the controller to ramp up or down from current temperature to a target setpoint at a pre-determined rate. It then controls at the target setpoint for an adjustable soak period before switching off the heat output. Set Ramp rate ( 0 to 9995 deg/hour) Press ▲ and ▼ buttons for 3 seconds to enter program e[...]

  • Page 16

    The second setpoint SP2 can be used to trigger an alarm or as a proportional control output. TO CONFIGURE SP2 AS AN ALARM Enter program mode. Select level 2 then followed by the required option below: dV .hi sets off alarm signal when temperature rises above a pre-set temperature above the setpoint. dV .Lo sets off alarm signal when temperature fal[...]

  • Page 17

    Second Setpoint SUBSIDIARY SP2 MODE : Latch/sequence or non-linear cool. Latch alarm LtCh When activated, the alarm latches until manually reset, even though the alarm condition may have disappeared. Sequence alarm hoLd When hoLd is selected, in any alarm mode, it prevents an alarm signal on power -up. The alarm is enabled only after the process te[...]

  • Page 18

    Error Messages ERROR MESSAGES T emp Setpoint Cycle 75% SP Start TUNE TUNE Tuning DAC PID New PID values entered Time (100% output) oS 1 oS 2 Ct A Ct b Ct 3 Ct 4 uS Ct 1 Ct 2 SENSOR F AUL T Upper display alternates: inPt and F AiL Indicates: thermocouple burnout RTD/Pt100 open or short circuit or negative over -range. Action: Check sensor/wiring NON[...]

  • Page 19

    Improving Control Accuracy IMPROVING CONTROL ACCURACY T emp Maximum Time Variance VA r ° hi ° ± 0.1 ° Minimum Lo ° The following functions are to assist engineers with machine development, commissioning and troubleshooting. READ SP1 OUTPUT PERCENT AGE POWER Poor control may be due to incorrectly sized heaters. SP1.P (Level 2) constantly displa[...]

  • Page 20

    Function List FUNCTION LIST (Levels 1 to 4) BAND T oo narrow (oscillates) increase T oo wide (slow warm up and response) decrease BAND Note: A Functions Menu is shown on the cover fold-out A3 LEVEL 1 F unction Options [Factory settings] shown in brackets SELECT AUTOTUNE [oFF] on ParK At.Sp Used to switch the Autotune feature on and off, to select P[...]

  • Page 21

    Function List F unction Options [Factory settings] shown in brackets A - - on.oF 0.1 - 81 sec [20] SP1 proportional cycle-time (see pages 9/10) Determines the cycle rate of the output device for proportional control. Select on.oF for ON/OFF mode. [0] to * °C/°F SP1 offset/manual reset * ±50% bAnd . Applicable in proportional and ON/OFF mode with[...]

  • Page 22

    Function List LEVEL 2 F unction Options [Factory settings] shown in brackets MANUAL CONTROL MODES 0 to 100 % ‘read only’ Read SP1 output percentage power [oFF] 1 to 100 % (not in ON/OFF) SP1 manual percentage power control For manual control should a sensor fail. Record typical SP1.P values beforehand. 100 to 0 % duty cycle [100] Set SP1 power [...]

  • Page 23

    Function List Sensor burn-out/break protection Caution: Settings affect fail safe state. SP1 SP2 [uP.SC] Upscale Upscale dn.SC Downscale Downscale 1u.2d Upscale Downscale 1d.2u Downscale Upscale Select output modes: Direct/Reverse Caution: Settings affect fail safe state. SP1 SP2 [1r.2d] Reverse Direct 1d.2d Direct Direct 1r.2r Reverse Reverse 1d.2[...]

  • Page 24

    Function List F unction Options [Factory settings] shown in brackets Select SP1/2 LED indicator modes SP1 SP2 [1n.2n] Normal Normal 1i.2n Invert Normal 1n.2i Normal Invert 1i.2i Invert Invert [0.0] to ± 25% sensor maximum Sensor span adjust For recalibrating to a remote standard e.g. External Meter , data logger . See ADV ANCED SETTINGS page 24,25[...]

  • Page 25

    Function List LEVEL 4 Access to level 4 is gained through in level 3. Press and hold ▲ and ▼ for 10 seconds. Enter level 4 at Lock , release ▲ and ▼ together . Display reads Program security using Lock Select from three Lock options: Press and hold ✱ , press ▲ to index. LEV .3 locks level 3 and 4 only- T echnical Functions. LEV .2 locks[...]

  • Page 26

    F ACTORY SET OUTPUT OPTIONS 22 DUAL RELA Y OR DUAL SSd OUTPUT MODELS The table below details the factory set output options. rL Y2 is a 1A electromechanical relay , and SSd1/SSd2 is an identical second SSR drive output. QUICK ST ART (page 1a) or SET -UP (page 5) follow steps 1 and 2 ignore step 3 and proceed straight to step 4. Factory Option CN941[...]

  • Page 27

    Advanced Settings Before embarking on the Advanced Settings, please familiarise yourself with the basic operation of the controller as described in this manual. The following instructions assume that the user understands how to make the initial configuration, can navigate through the Function Menu and successfully Autotune the controller in heating[...]

  • Page 28

    Advanced Settings Heat Cool Strategy Configuration (continued) If no improvement, return to the original value and; In level 1 halve the value of If the process hunts between heating and cooling, a deadband setting may be needed. Enter a small value, eg. 1 and observe the process. Increase the setting until hunting stops. Level 1 adjust value W ate[...]

  • Page 29

    Advanced Settings 2.5 Therefore adjust SP An to (-) 18 to correct error . Notes: (1) After making the adjustment the reading will immediately change. Allow time for the temperature to stabilise at T 2 before making any further adjustment. At this point, a ZEro adjustment may be needed, refer to step 1 above. (2) Check that the temperature correctly[...]

  • Page 30

    Advanced Settings 3 Allocate the output devices at function as described in SET-UP , enter the configuration into the memory and proceed as follows: Calculate the values for the controller settings for and using the example below as a guide: 4 to 7mV input from transducer is required to display 0 - 110 units Chose Linear Range Lin4 4-20mV = 0 to 10[...]

  • Page 31

    Mechanical Installation The CN9400 Controller is designed to be mounted in a 1/16 DIN panel cutout. The unit is sleeve mounted with the front bezel assembly rated NEMA4/IP66 provided that: ● the panel is smooth and the panel cutout is accurate; ● the mounting instructions are carefully followed. DIN P ANEL CUTOUT 1/16 DIN panel cutout size 45.0[...]

  • Page 32

    Mechanical Installation MINIMUM SP ACING MOUNTING T o mount a Controller proceed as follows: 1 Check that the controller is correctly orientated and then slide the unit into the cutout. 2 Slide the panel clamp over the controller sleeve pressing it firmly against the panel until the controller is held firmly . 3 The controller front bezel and circu[...]

  • Page 33

    Electrical Installation OUTPUT DEVICES T wo of the following output devices are fitted to the controllers, depending on the model. 1 Solid state relay drive (SSd/SSd1/SSd2) 5Vdc +0/-15%, 15mA non isolating T o switch a remote SSR (or logic) 2 Miniature power relay (rL Y/rLY1) 2A/250V resistive, Form A/SPST contacts. 3 Sub miniature power relay (rL [...]

  • Page 34

    Electrical Installation 30 ELECTRICAL INST ALLA TION (continued) EN61010 - /CSA 22.2 No 1010.1 92 Compliance shall not be impaired when fitted to the final installation. Designed to offer a minimum of Basic Insulation only . The body responsible for the installation is to ensure that supplementary insulation suitable for Installation Category II or[...]

  • Page 35

    Sensor Selection Option/Sensor type Sensor range Linearity Thermocouples tc b B 0 to 1800 °C 32 to 3272 F Pt-30%Rh/Pt-6%Rh 2.0 * tc E E 0 to 600 °C 32 to 1112 F Chromel/Con 0.5 tc J J 0 to 800 °C 32 to 1472 F Iron/Constantan 0.5 tc K K -50 to 1200 °C -58 to 2192 F Chromel/Alumel 0.25* tc L L 0 to 800 °C 32 to 1472 F Fe/Konst 0.5 tc n N -50 to [...]

  • Page 36

    Specification Thermocouple 9 types Standards: IPTS/68/DIN 43710 CJC rejection: 20:1 (0.05°/°C) typical External resistance: 100 Ω maximum Resistance thermometer RTD-2/Pt100 2 wire Standards: DIN 43760 (100 Ω 0°C/138.5 Ω 100°C Pt) Bulb current: 0.2mA maximum Linear process inputs mV range: 0 to 50mV Applicable to all inputs SM = sensor max[...]

  • Page 37

    FOR WARRANTY RETURNS, please have the following information available BEFORE contacting OMEGA: 1. P .O. number under which the product was PURCHASED, 2. Model and serial number of the product under warranty , and 3. Repair instructions and/or specific problems relative to the product. FOR NON-WARRANTY REP AIRS, consult OMEGA for current repair char[...]

  • Page 38

    http://www .omega.com e-mail: info@omega.com ® U ser ’ s Guide CN9400 Dual Display Autotune T emperature Contr oller omega.com TM OMEGA ® OMEGAnet SM On-Line Service Internet e-mail http://www .omega.com info@omega.com It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that apply . OMEGA is constantly pursuing[...]