omega.com User’s Guide TM ® OMEGA OMEGAnet SM On-Line Service http://www.omega.com Servicing North America: USA: ISO 9001 Certified One Omega Drive, Box 4047 Stamford, CT 06907-0047 Tel: (203) 359-1660 FAX: (203) 359-7700 e-mail: info@omega.com Internet e-mail info@omega.com For immediate technical or application assistance: Canada: 976 Bergar Laval (Quebec) H7L 5A1 Tel: (514) 856-6928 FAX: (514) 856-6886 e-mail: canada@omega.
INDEX SAFETY INFORMATION ULTIMATE SAFETY ALARMS 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 To offer a minimum of Basic Insulation only. Suitable for installation within Catagory II and III and Pollution Degree 2. Do not use SP2 as the sole alarm where personal injury or damage may be caused by equipment failure.
INDEX SAFETY INFORMATION ULTIMATE SAFETY ALARMS 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 To offer a minimum of Basic Insulation only. Suitable for installation within Catagory II and III and Pollution Degree 2. Do not use SP2 as the sole alarm where personal injury or damage may be caused by equipment failure.
FUNCTIONS MENU it y ex pla .5) todis ity t (0 au m r itiv dEr. m a ing (6) s l a g ; a n r a k 3 g r Y se .0 x L32 ve loc LEV -A on pro ; StA tive to 1 y a 1 to le le rity E; ab Off; pla dir; ab Auto riva 0.1 cu non De Dis Se Dis Dis L AL LEVL 4 LOCK PROG NO.AL DIS.S DER.S ly) n do Setpoint 1 Output indicator (green) Process temperature (PV) or Function (green) Setpoint temperature (SP) or Option (orange) Setpoint 2 Output indicator (red) * u d.2 .2r 1 d; d r; 1 2i i. i; 1 s r f/ a 2 .
QUICK START 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. 4 To enter initial configuration into controller memory Press and hold UNIT *C The display will now read PARK SPI.D 0 NONE 3 Select SP1 (Main setpoint output device) To display setpoint Press and hold ✱ The displays will now read unit (eg.
INTRODUCTION I n t r o d u c t i o n Serial communication is available as an option, and the easy to use CN9-SW is a graphic WINDOWSTM based 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.
OVERVIEW INSTALLATION AUTOTUNE The Model CN9400 controller is designed to be mounted in a 1/16 DIN panel cut-out. See the INSTALLATION section. To precisely control an application 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. The results are measured and used to calculate optimum PID values which are automatically entered in the controller memory.
CYCLE-TIME O v e r v i e w 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. Functions and options The facilities of the controller are selected from the multi-level menu using the front panel mounted buttons.
SET-UP 3 TO SELECT SP1 (Main setpoint output device) This section details the four step initial configuration that enables control with factory PID settings to start, once the setpoint has been entered. Note: Dual Relay and Dual SSd Output Options Models CN9411 and CN9422 have their outputs preconfigured.
M e n u N a v i g a t i o n MENU NAVIGATION 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 offers different functions, see FUNCTIONS MENU page A3. Each function has a range of user selections or options, see FUNCTION LIST pages 16–22 In operating mode, the upper (green) display reads process temperature (PV) and the lower (orange) display reads setpoint temperature (SP).
AUTOTUNE Select the most appropriate method of Autotune , Tune or Tune at Setpoint, to suit the application. TUNE PROGRAM Temp Setpoint Note: The proportional cycle-time can be pre-selected before starting Autotune, see PROPORTIONAL CYCLE-TIME.
When the TUNE program is complete the upper alternating display stops and only the process 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 automatically implemented. To set the cycle time see PROPORTIONAL CYCLE-TIME. A u t o t u n e Start TUNE AT.
PROPORTIONAL CYCLE-TIME 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 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.
If this cycle-time is suitable press and hold both ▲ and ▼ buttons for 3 seconds to enter it into the controllers memory. To Pre-Select Cycle-time Before Autotune Before selecting Autotune, enter program mode. 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 both ▲ and ▼ buttons for 3 seconds to enter it into the controllers memory.
PROGRAMMER RAMP-SOAK Deg. 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. Target setpoint Deg. Soak Ramp °/hour Ramp °/hour Target setpoint Soak Time Time Press ▲ and ▼ buttons for 3 seconds to enter program entry point Exit program to enter settings into memory and commence ramp to target setpoint.
SECOND SETPOINT (SP2) dV.hi sets off alarm signal when temperature rises above a pre-set temperature above the setpoint. The second setpoint SP2 can be used to trigger an alarm or as a proportional control output. S e t p o i n t TO CONFIGURE SP2 AS AN ALARM Enter program mode. Select level 2 then followed by the required option below: Deviation high alarm SP2.A Deviation low alarm Deviation band alarm SP setpoint SP setpoint Y° ✱ ✱ FS.
SUBSIDIARY SP2 MODE: SP2.B Latch/sequence or non-linear cool. Latch alarm LtCh In level 1 select and then set the setpoint (SP2) value (y°). SET.2 Alarm type Sequence alarm hoLd Deviation When hoLd is selected, in any alarm mode, it prevents an alarm signal on power-up. The alarm is enabled only after the process temperature has reached setpoint. ON-OFF operating mode SP2 Output state SP2 LED state Proportional operating mode SP2 Output state SP2 LED state DV.HI DV.
ERROR MESSAGES SENSOR FAULT MANUAL POWER ERROR Upper display alternates: hAnd and FAiL SP1 set to ON/OFF in CYC.t Action: Select proportional mode IMMEDIATE FAIL ON AUTOTUNE START Upper display alternates: PV tunE and FAiL Lower display 0 1. No setpoint entered. Action: Enter setpoint Action: Note: 2. SP1 set to ON/OFF in Select proportional mode DATA HAND Action: 1. Change the conditions. eg. raise setpoint 2. Try 3. Check SP1.P percentage power (see IMPROVING CONTROL ACCURACY) 4.
IMPROVING CONTROL ACCURACY Using the CheK Control accuracy monitor To start the monitor select READ SP1 OUTPUT PERCENTAGE POWER ON Note: 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. During monitoring either return to normal operation or remain in program mode.
FUNCTION LIST (Levels 1 to 4) Note: A Functions Menu is shown on the cover fold-out A3 LEVEL 1 F u n c t i o n L i s t Function 16 Options Function Options INT.T oFF 0.1 to 60 minutes [5.0] SP1 integral time/reset Auto-corrects proportional control offset error [Factory settings] shown in brackets [Factory settings] shown in brackets SELECT AUTOTUNE TUNE [oFF] on ParK At.Sp Used to switch the Autotune feature on and off, to select ParK or Autotune at setpoint.
LEVEL 1 (continued) SP2 OPERATING PARAMETERS (see pages 12/13) Options CYC.T 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. OFST [0] to * °C/°F SP1 offset/manual reset * ±50% bAnd. Applicable in proportional and ON/OFF mode with integral disable: Int.t oFF.
LEVEL 2 Function SP2.B Function Options [Factory settings] shown in brackets Options [Factory settings] shown in brackets [nonE] LtCh hoLd nLin Subsidiary SP2 mode: latch/sequence Non-linear cool proportional band F u n c t i o n L i s t MANUAL CONTROL MODES SP1.P HAND PL.1 PL.2 0 to 100 % ‘read only’ Read SP1 output percentage power DISP [1] 0.1 Select display resolution: for display of process temperature, setpoint, OFSt, Set.2, hi.SC, LoSC.
LEVEL 3 BURN Sensor burn-out/break protection Caution: Settings affect fail safe state. OUTPUT CONFIGURATION Function Options [uP.SC] dn.SC 1u.2d 1d.2u SP1 Upscale Downscale Upscale Downscale SP2 Upscale Downscale Downscale Upscale [Factory settings] shown in brackets SP1.D [nonE] rLY SSd Select SP1 output device rLY1 rLY2 SSd1 SP2.D [nonE] SSd rLY Read SP2 output device (read only) rLY2 rLY1 SSd2 Select output modes: Direct/Reverse Caution: Settings affect fail safe state. [1r.2d] 1d.
LEVEL 3 (continued) Function F u n c t i o n L i s t REU.L 20 Options Select SP1/2 LED indicator modes [1n.2n] 1i.2n 1n.2i 1i.2i SPAN [Factory settings] shown in brackets SP1 Normal Invert Normal Invert TECH SP2 Normal Normal Invert Invert [0.0] to ±25% sensor maximum Sensor span adjust For recalibrating to a remote standard e.g. External Meter, data logger. See ADVANCED SETTINGS page 24,25. ZERO [0.
LEVEL 4 Access to level 4 is gained through Press and hold ▲ and ▼ for 10 seconds. Function [Factory settings] shown in brackets Press ▼ to access following functions VER in level 3. [Auto] StAY Program mode auto-exit switch Auto-exit returns display to normal if 60 seconds of key inactivity, select StAY to disable NO.AL [oFF] on Disable SP2 alarm annunciator -ALSelect on to disable -AL- DIS.
FACTORY SET OUTPUT OPTIONS DUAL RELAY OR DUAL SSd OUTPUT MODELS The table below details the factory set output options. rLY2 is a 1A electromechanical relay, and SSd1/SSd2 is an identical second SSR drive output. 3 4 rLY1 (2A) 5 6 To make this selection during the initial configuration in either QUICK START (page 1b) or SET-UP (page 5), start from step 3.
ADVANCED SETTINGS From cold (normal procedure on a new installation) Enter setpoint and allow the process to reach the setpoint using factory settings for heating only. Autotune at setpoint Make the following pre-settings: HEAT COOL STRATEGY CONFIGURATION Level 1 set Using DAC to 1.0 CYC.T to 10 and CYC.2 to 10 SP2.A Cool option Level 2 set SP2.
S e t t i n g s Heat Cool Strategy Configuration (continued) CALIBRATION TO ANOTHER INSTRUMENT If no improvement, return to the original value and; If the controller and instrument readings are different, the ZERO and/or SPAN function in Function Menu Level 3 will require adjustment. In level 1 halve the value of CYC.2 ZERO Adjust to make an equal adjustment across the full scale of the controller and to make a correction when the error increases/ decreases across the scale.
Calibration to Another Instrument (continued) 2.5 Therefore adjust SPAn to (-) 18 to correct error. To make a correction when there are different errors across the scale. Adjust using the SPAN function 2.1 Chose a temperature near the bottom and another near the top of the scale. (2) 2.2 Run the process at the lower temperature (T1). Note the error (E1) between the controller and the instrument readings. Note: For hi.SC settings see level 2.
9 – 1 2 + – 3 4 14 15 5Vdc 15mA 5 3 6 L N 7 8 1 1 ohm Chose Linear Range Lin4 4-20mV = 0 to 1000 units. INPT NONE Ensure that the Nominal Signal Span chosen is wider than the transducer’s actual signal span, and the Nominal Scale is wider than the full scale of the engineering units to be displayed. Nom. Signal Span 0–20 mV 4–20 mV 0–20 mV 4–20 mV 0–20 mV SP1.
MECHANICAL INSTALLATION 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. 20 mm (0.79) DIN PANEL CUTOUT M e c h a n i c a l The CN9400 Controller is designed to be mounted in a 1/16 DIN panel cutout. 1/16 DIN panel cutout size 10 mm (0.39) I n s t a l l a t i o n 45.0mm +0.6mm -0.0mm (1.77in. +0.02in. -0.0in.) wide 45.0mm +0.6mm -0.0mm (1.77in. +0.02in.
I n s t a l l a t i o n M e c h a n i c a l 28 MINIMUM SPACING MOUNTING To 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 4 screwdriver can be used as a lever if required.
ELECTRICAL INSTALLATION Designed for use with the following supply voltages: Two of the following output devices are fitted to the controllers, depending on the model. 100 - 240V 50-60 Hz 4.0 VA (nominal) +/-10% maximum permitted fluctuation 12V - 24V (AC/DC) +/-20% 4.5 VA Polarity not required 1 2 3 Solid state relay drive (SSd/SSd1/SSd2) 5Vdc +0/-15%, 15mA non isolating To switch a remote SSR (or logic) Miniature power relay (rLY/rLY1) 2A/250V resistive, Form A/SPST contacts.
I n s t a l l a t i o n E l e c t r i c a l ELECTRICAL INSTALLATION (continued) MODEL CN9412 TYPICAL CONNECTION DIAGRAM EN61010 - /CSA 22.2 No 1010.1 92 Compliance shall not be impaired when fitted to the final installation. The SSR driver output is allocated to SP1 and wired to switch the load (heater) using an SSR F1 Fuse: time lag type to IEC127. CSA/UL rating 250Vac Designed to offer a minimum of Basic Insulation only.
SENSOR SELECTION Sensor range Linearity 32 to 3272 F 32 to 1112 F 32 to 1472 F -58 to 2192 F 32 to 1472 F -58 to 2192 F 32 to 2912 F 32 to 2912 F -273 / 482 F Pt-30%Rh/Pt-6%Rh Chromel/Con Iron/Constantan Chromel/Alumel Fe/Konst NiCrosil/NiSil Pt-13%Rh/Pt Pt-10%Rh/Pt Copper/Con 2.0 * 0.5 0.5 0.25* 0.5 0.25* 2.0* 2.0* 0.25* -200 / 400 C -273 / 752 F Pt100/RTD-2 0.
SPECIFICATION S p e c i f i c a t i o n Thermocouple 9 types Standards: CJC rejection: External resistance: Resistance thermometer RTD-2/Pt100 2 wire Standards: Bulb current: Linear process inputs mV range: DIN 43760 (100Ω 0°C/138.5Ω 100°C Pt) 0.2mA maximum form A/SPST contacts (AgCdO) 2A/250ac resistive load 1A/250ac resistive load Upper, 4 Digits, high brightness green LED. 10mm (0.4”) high. Lower, 4 Digits, Orange LED. 9mm (0.35”) high Digital range -199 to 9999 Hi-res mode -199.9 to 999.
QUICK START WARRANTY / DISCLAIMER After power-up the controller requires programming with the following information: S t a r t Type of Sensor (See list of temperature sensors p.31) Operating unit (See list of units p.18) Allocation of Output Device to SP1/SP2 (Relay or SSd) Temperature Setpoint eg. Degrees When the above information has been programmed into the controller it will be operational with the following factory settings.
omega.com User’s Guide TM ® OMEGA OMEGAnet SM On-Line Service http://www.omega.com Servicing North America: USA: ISO 9001 Certified One Omega Drive, Box 4047 Stamford, CT 06907-0047 Tel: (203) 359-1660 FAX: (203) 359-7700 e-mail: info@omega.com Internet e-mail info@omega.com For immediate technical or application assistance: Canada: 976 Bergar Laval (Quebec) H7L 5A1 Tel: (514) 856-6928 FAX: (514) 856-6886 e-mail: canada@omega.
