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Manual Marathon Computer AACC 2000

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  • Marathon Computer AACC 2000 - page 1

    Marathon Monitors Inc. AACC 2000 (Carbon) Monitor / Controller Installation and Operation Handbook COPYRIGHT © 1998 MARATHON MONITORS INC ...

  • Marathon Computer AACC 2000 - page 2

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 2 Part # F200047 COPYRIGHT © 1998 MARATHON MONITORS INC. 3100 East Kemper Road, Cincinnati, Ohio 45241 1-800-322-4444 (513) 772-7788 FAX: (513) 772-7853 No part of this document may be stored or reproduced by any means whatsoever without prior written permission of Marathon Monitors Inc. All tra ...

  • Marathon Computer AACC 2000 - page 3

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 3 Table of contents: SAFETY and EMC INFORMATION ................................................................... 4 Installation Safety Requirements ........................................................................... 5 Installation requirements for EMC .................................. ...

  • Marathon Computer AACC 2000 - page 4

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 4 SAFETY and EMC INFORM ATION Please read this section carefully before installing the controller This controller is intended for industrial temperature and process control applications where it will meet the requirements of the European Directives on Safety and EMC. Use in other applications, or ...

  • Marathon Computer AACC 2000 - page 5

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 5 Installation Safety Requirements Safety Symbols Various symbols are used on the instrument , they have the following meaning: Caution, (refer to the accompanying documents) Functional earth (ground) terminal ! The functional earth connection is not required for safety purposes but to ground RFI ...

  • Marathon Computer AACC 2000 - page 6

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 6 Overcurrent protection To protect the internal PCB tracking within the controller against excess currents, the AC power supply to the controller and power outputs must be wired through the fuse or circuit breaker specified in the technical specification. Voltage rating The maximum continuous vo ...

  • Marathon Computer AACC 2000 - page 7

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 7 Where damage or injury is possible, we recommend fitting a separate over-temperature protection unit, with an independent temperature sensor, which will isolate the heating circuit. Please note that the alarm relays within the controller will not give protection under all failure conditions. Gr ...

  • Marathon Computer AACC 2000 - page 8

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 8 Technical Specification Environmental ratings Panel sealing: Instruments are intended to be panel mounted. The rating of panel sealing is IP65, (EN 60529), or 4X, (NEMA 250). Operating temperature: 0 to 55 o C. Ensure the enclosure provides adequate ventilation. Relative humidity: 5 to 95%, non ...

  • Marathon Computer AACC 2000 - page 9

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 9 General Main PV Input range: + 100mV, 0 to 10Vdc (auto ranging) and 3 wire Pt100. Calibration accuracy: The greater of + 0.2% of reading, + 1 LSD or + 1 o C. Cold junction compensation >30:1 rejection of ambient temperature, (for thermocouple i/p). Electrical safety Standards: E N 61010, Ins ...

  • Marathon Computer AACC 2000 - page 10

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 10 ...

  • Marathon Computer AACC 2000 - page 11

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 11 Installation AACC 2000 1/4 DIN controller Figure 1 - 3 Ratchets Display screen Panel retaining clips Case Terminal covers Label Latching ears Panel sealing gasket ...

  • Marathon Computer AACC 2000 - page 12

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 12 Outline dimensions Model 2000 The electronic assembly of the controller plugs into a rigid plastic case, which in turn fits into the standard DIN size panel cut-out shown in Figures 1-3 and 1-4. 150mm 5.91in 96mm 3.78in 96mm 3.78in Panel cut-out 92 x 92 mm 3.62 x 3.62 in -0 +0.8 -0 +0.03 Recom ...

  • Marathon Computer AACC 2000 - page 13

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 13 Introduction Model AACC 2000’s are high stability, process controllers with self and adaptive tuning. They have a modular hardware construction which accepts up to three plug-in Input/Output modules and two interface modules to satisfy a wide range of control requirements. Two digital inputs ...

  • Marathon Computer AACC 2000 - page 14

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 14 All electrical connections are made to the screw terminals at the rear of the controller. If you wish to use crimp connectors, the correct size is AMP part number 349262-1. They accept wire sizes from 0.5 to 1.5 mm 2 (16 to 22 AWG). A set of connectors is supplied with the controller. The term ...

  • Marathon Computer AACC 2000 - page 15

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 15 The display below shows a typical wiring diagram for the AACC2000 Carbon Controller: Typically a series of letters appear after the part number, see chart below. D – Dual Relay A – Analog Output X – Not Installed C – Communications I – Analog Input (typically in position 3) ...

  • Marathon Computer AACC 2000 - page 16

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 16 Sensor input connections The connections for the various types of sensor input are shown below. Fig 1- 7 Sensor input connections PLUG-IN MODULE CONNECTIONS Module 1, 2 and 3 Module positions 1, 2 and 3 are plug-in modules. They can be either two terminal modules of the types shown in Table 1- ...

  • Marathon Computer AACC 2000 - page 17

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 17 Two terminal modules Note: Module 1 is connected to terminals 1A and 1B Module 2 is connected to terminals 2A and 2B Module 3 is connected to terminals 3A and 3B. Terminal identity Module type A B C D Possible functions Relay: 2-pin (2A, 264 Vac max.) Unused Heating, cooling, alarm, program ev ...

  • Marathon Computer AACC 2000 - page 18

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 18 Four terminal modules Note: Module 1 is connected to terminals 1A, 1B, 1C and 1D Module 2 is connected to terminals 2A, 2B, 2C and 2D Module 3 is connected to terminals 3A, 3B, 3C and 3D Module type Terminal identity Possible functions A B C D lay: changeover (2A, 264 Vac max.) Heating, coolin ...

  • Marathon Computer AACC 2000 - page 19

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 19 C onnections for Process Value 3 in module position 3 The diagrams above show the connections for the various types of input. The input will have been configured in accordance with the ordering code. Figure 1- 8 Connections for Process Value 2 (PV2) Volts or mV inputs + − 0-1.6Vdc High Imped ...

  • Marathon Computer AACC 2000 - page 20

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 20 Communication module 1 The Models AACC 2000 will accept a plug-in communications modules. The possible module types are shown in the table below. The serial communications can be configured for either Modbus, or MMI protocol. Communication s module 1 Terminal identity (COMMS 1) Module type HA ...

  • Marathon Computer AACC 2000 - page 21

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 21 Wiring of 2-wire EIA-485 serial communications link Com Note: All resistors are 220 ohm 1/4W carbon composition. Local grounds are at equipotential. Where equipotential is not available wire into separate zones using a galvanic isolator. Use a repeater (KD845) for more than 32 units. A B PC MM ...

  • Marathon Computer AACC 2000 - page 22

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 22 ...

  • Marathon Computer AACC 2000 - page 23

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 23 OPER ATION This chapter has nine topics: • FRONT PANEL LAYOUTS • BASIC OPERATION • OPERATING MODES • AUTOMATIC MODE • MANUAL MODE • PARAMETERS AND HOW TO ACCESS THEM • NAVIGATION DIAGRAM • PARAMETER TABLES • ALARMS ...

  • Marathon Computer AACC 2000 - page 24

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 24 FRONT PANEL LAYOUTs Figure 2- 1 Model AACC 2000 front panel layout Page Scroll Down Up Button Button Button Button 26.0 20.0 ...

  • Marathon Computer AACC 2000 - page 25

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 25 Button or indicator Name Explanation OP1 Output 1 When lit, it indicates that the output installed in module position 1 is on. This is normally the heating output on a temperature controller. OP2 Output 2 When lit, it indicates that the output installed in module position 2 is on. This is norm ...

  • Marathon Computer AACC 2000 - page 26

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 26 Basic operation Switch on the power to the controller. It runs through a self-test sequence for about three seconds and then shows the process value, in the upper readout and the setpoint , in the lower readout. This is called the Home display. Process Value (PV) Setpoint Figure 2- 4 Home disp ...

  • Marathon Computer AACC 2000 - page 27

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 27 Operating modes The controller has two basic modes of operation: • Automatic mode in which the output is automatically adjusted to maintain the temperature or process value at the setpoint. • Manual mode in which you can adjust the output independent of the setpoint. You toggle between the ...

  • Marathon Computer AACC 2000 - page 28

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 28 Automatic mode You will normally work with the controller in automatic mode. If the MAN light is on, press the AUTO/MAN button to select automatic mode. The AUTO light comes on Power on x 2 The Home display Check that the AUTO light is on. The upper readout shows the measured temperature. The ...

  • Marathon Computer AACC 2000 - page 29

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 29 MANUAL MODE If the AUTO light is on, press the AUTO/MAN button to select manual mode. The MAN light comes on. Power on x 2 The Home display Check that the MAN light is on. The upper readout shows the measured temperature, or process value. The lower readout shows the % output. To adjust the ou ...

  • Marathon Computer AACC 2000 - page 30

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 30 PARAMETERS AND HOW TO ACCESS THEM Parameters are settings, that determine how the controller will operate. For example, alarm setpoints are parameters that set the points at which alarms will occur. For ease of access, the parameters are arranged in lists as shown in the navigation diagram on ...

  • Marathon Computer AACC 2000 - page 31

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 31 can return to the current list header at any time can by pressing . To step to the next list header, press once again. ...

  • Marathon Computer AACC 2000 - page 32

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 32 Parameter names In the navigation diagram, each box shows the display for a selected parameter. The Operator parameter tables, later in this chapter, list all the parameter names and their meanings. The navigation diagram shows all the parameters that can, potentially, be present in the contro ...

  • Marathon Computer AACC 2000 - page 33

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 33 Navigation Diagram (Part A) (THE PARAMETERS THAT APPEAR DEPEND UPON HOW THE CONTROLLER HAS BEEN CONFIGURED) Home List 20 .0 20.0 OP 100.0 m-A Auto rEF 1 Probe List Prob LIST PF 0.1 OFFS 0.01 H-CO 10.0 Ptc 10 Pmu 10 AIin 10 Care List CArE LIST Care Prt.r 0.0 tmin 0.1 Pti 1OFF imp.h 10.0 Ptrt 10 ...

  • Marathon Computer AACC 2000 - page 34

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 34 Autotune List Atu n tunE OFF Adc mAn PID List Pid LiSt G.SP 500 SEt PID.1 Pb 5 Ti 300 Td 60.0 rES 0.0 Hcb Auto Lcb Auto rEL Pb2 10 Ti.2 300 Td.2 500 rES.2 0.0 Hcb2 Auto Lcb2 Auto rEL.2 1.00 FF.Pb 0.0 FF.du 100.0 Motor List mtr LiSt tm 30.0 In.t OFF bAcT OFF mP .T Auto U.br DWn Setpoint List SP ...

  • Marathon Computer AACC 2000 - page 35

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 35 Input List iP LiSt FiLT OFF FLt.2 1P.1 PU.1P OFF FLT.3 OFF CAL FACT ofs1 0F ofs2 0 mv.1 0 mv.2 0 mv.3 0 cjc1 0 L1.1 0 L1.2 0 L1.3 0 PVSL 1P1 Output List oP LiSt OP.Lo 0.0 OP.Hi 100.0 OPrr OFF FOP 0.0 CYC.1 20.0 hYS.1 1.0 onT.1 Auto CYC.2 5.0 hYS.2 1.0 onT.2 Auto db 0.0 Sb.OP 100.0 Comms List c ...

  • Marathon Computer AACC 2000 - page 36

    P OP 19 1 OP 10 d OP 1. Access List ACCS LiST codE PASS GoTo OPEr ...

  • Marathon Computer AACC 2000 - page 37

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 37 PARAMETER TABLES Name Description Home list Home Measured value and Setpoint OP OP % Output level SP SP Target setpoint (if in Manual mode ) m-A m-A Auto-man select reF reF Customer defined identification number + Extra parameters, if the ‘Promote’ feature has been used (see Chapter 3, Edi ...

  • Marathon Computer AACC 2000 - page 38

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 38 Name Description User User User list n1 n1 user parameter #1 n2 n2 user parameter #2 n3 n3 user parameter #3 n4 n4 user parameter #4 n5-15 n5-15 user parameter #5 - 15 Name Description AL AL Alarm list 1 1 - - - - - - Alarm 1 setpoint value 2 2 - - - - - - Alarm 2 setpoint value 3 3 - - - - - ...

  • Marathon Computer AACC 2000 - page 39

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 39 tunE tunE One-shot autotune enable drA drA Adaptive tune enable drA.t drA.t Adaptive tune trigger level in display units. Range = 1 to 9999 Adc Adc Automatic Droop Compensation (PD control only) ...

  • Marathon Computer AACC 2000 - page 40

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 40 Name Description Pid Pid PID list G.SP G.SP If Gain Scheduling has been enabled (see Chapter 4), this parameter sets the PV below which ‘ Pid.1 ’ is active and above which ‘ Pid.2 ’ is active. SEt SEt ‘ Pid.1 ’ or ‘ Pid.2 ’ selected Pb Pb Proportional Band ( SEt 1 ) (in display ...

  • Marathon Computer AACC 2000 - page 41

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 41 Name Description SP SP Setpoint list SSEL Select SP 1 to SP16 , depending on configuration SP 1 Setpoint one value SP 2 Setpoint two value SP L Setpoint 1 low limit SP H Setpoint 1 high limit SP2.L Setpoint 2 low limit SP2.H Setpoint 2 high limit SPrr Setpoint Rate Limit Hb.ty Holdback Type fo ...

  • Marathon Computer AACC 2000 - page 42

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 42 Name Description oP oP Output list Does not appear if Motorised Valve control configured. OP.Lo Low power limit (%) OP.Hi High power limit (%) OPrr Output Rate Limit (% per sec) FOP Forced output level (%) CYC.H Heat cycle time (0.2S to 999.9S) hYS.H Heat hysteresis (display units) ont.H Heat ...

  • Marathon Computer AACC 2000 - page 43

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 43 Name Description inFo inFo Information list - continued rES.L Logging Reset - ‘ YES / no ’ The following set of parameters is for diagnostic purposes. mCt Processor utilisation factor w.OP W orking output FF.OP Feedforward component of output VO PID output to motorised valve P OP Proportio ...

  • Marathon Computer AACC 2000 - page 44

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 44 Alarms Alarm annunciation Alarms are flashed as messages in the Home display. A new alarm is displayed as a double flash followed by a pause, old (acknowledged) alarms as a single flash followed by a pause. If there is more than one alarm condition, the display cycles through all the relevant ...

  • Marathon Computer AACC 2000 - page 45

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 45 Diagnostic alarms These indicate that a fault exists in either the controller or the connected devices. Display shows What it means What to do about it EE.Er EE.Er Electrically Erasable Memory Error: The value of an operator, or configuration, parameter has been corrupted. This fault will auto ...

  • Marathon Computer AACC 2000 - page 46

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 46 Table 2- 2b Diagnostic alarms ...

  • Marathon Computer AACC 2000 - page 47

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 47 ACCESS LEVELS This chapter describes the different levels of access to the operating parameters within the controller. There are three topics: • THE DIFFERENT ACCESS LEVELS • SELECTING AN ACCESS LEVEL • EDIT LEVEL THE DIFFERENT ACCESS LEVELS There are four access levels: • Operator lev ...

  • Marathon Computer AACC 2000 - page 48

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 48 SELECTING AN ACCESS LEVEL Access to Full, Edit or Configuration level s is protected by a password to prevent unauthorised access. If you need to change the password, see Chapter 6, Configuration . Access list header Press until you reach the access list header ‘ ACCS ’ . Press Password en ...

  • Marathon Computer AACC 2000 - page 49

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 49 Level selection The ‘ Goto ’ display allows you to select the required access level. Use and to select from the following display codes: OPEr : Operator level FuLL : Full level Edit : Edit level conF : Configuration level Press If you selected either ‘ OPEr ’ , ‘ FuLL ’ or ‘ Edit ...

  • Marathon Computer AACC 2000 - page 50

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 50 Returning to Operator Level To return to operator level from either ‘ FuLL ’ or ‘ Edit ’ level, repeat entry of the password and select ‘ OPEr ’ on the ‘ Goto ’ display. In ‘ Edit ’ level, the controller will automatically return to operator level if no button is pressed fo ...

  • Marathon Computer AACC 2000 - page 51

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 51 Promoting a parameter Scroll through the lists to the required parameter and choose the ‘ PrO ’ code. The parameter is then automatically added (promoted) into the Home display list. (The parameter will also be accessible, as normal, from the standard lists.) A maximum of twelve parameters ...

  • Marathon Computer AACC 2000 - page 52

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 52 This sheet intentionally left blank ...

  • Marathon Computer AACC 2000 - page 53

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 53 TUNING Before tuning, please read Chapter 2, Operation , to learn how to select and change a parameter. This chapter has five topics: • WHAT IS TUNING ? • AUTOMATIC TUNING • MANUAL TUNING • COMMISSIONING OF MOTORISED VALVE CONTROLLERS • GAIN SCHEDULING WHAT IS TUNING ? In tuning, you ...

  • Marathon Computer AACC 2000 - page 54

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 54 AUTOMATIC TUNING Two automatic tuning methods are provided in the AACC 2000: • A one-shot tuner, which automatically sets up the initial values of the parameters listed in Table 4-1 on the previous page. • Adaptive tuning, which continuously monitors the error from setpoint and modifies th ...

  • Marathon Computer AACC 2000 - page 55

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 55 Typical automatic tuning cycle Calculation of the cutback values Low cutback and High cutback are values that restrict the amount of overshoot, or undershoot, that occurs during large step changes in process variable (for example, under start-up conditions). If either low cutback, or high cutb ...

  • Marathon Computer AACC 2000 - page 56

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 56 MANUAL TUNING If for any reason automatic tuning gives unsatisfactory results, you can tune the controller manually. There are a number of standard methods for manual tuning. The one described here is the Ziegler-Nichols method. With the process at its normal running process variable: 1. Set t ...

  • Marathon Computer AACC 2000 - page 57

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 57 Setting the cutback values The above procedure sets up the parameters for optimum steady state control. If unacceptable levels of overshoot or undershoot occur during start-up, or for large step changes in process variable, then manually set the cutback parameters ‘ Lcb ’ and ‘ Hcb ’ . ...

  • Marathon Computer AACC 2000 - page 58

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 58 Integral action and manual reset In a full three-term controller (that is, a PID controller), the integral term ‘ ti’ automatically removes steady state errors from the setpoint. If the controller is set up to work in two-term mode (that is, PD mode), the integral term will be set to ‘OF ...

  • Marathon Computer AACC 2000 - page 59

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 59 Motorized valve control The AACC 2000 can be configured for motorised valve control as an alternative to the standard PID control algorithm. This algorithm is designed specifically for positioning motorised valves. These are ordered pre-configured as Model numbers: • 2000/VC motorised valve ...

  • Marathon Computer AACC 2000 - page 60

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 60 C OMMISSIONING THE M OTORISED V ALVE C ONTROLLER The commissioning procedure is the same for both bounded and boundless control modes, except in bounded mode you must first calibrate the position feedback potentiometer, as described in the section below. Proceed as follows: 1. Measure the time ...

  • Marathon Computer AACC 2000 - page 61

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 61 configuration list. ‘ func ’ should be set to ‘ Vpos ’, ‘ VAL.L ’ must be set to ‘ 0 ’ and ‘ VAL.H ’ to ‘ 100 ’. Exit from configuration and you are now ready to calibrate the position feedback potentiometer. Proceed as follows. 1. In Operator level, press the AUTO/MAN ...

  • Marathon Computer AACC 2000 - page 62

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 62 Gain scheduling Gain scheduling is the automatic transfer of control between one set of PID values and another. In the case of the AACC 2000 controllers, this is done at a presettable process value. It is used for the more difficult to control processes which exhibit large changes in their res ...

  • Marathon Computer AACC 2000 - page 63

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 63 CONFIGUR ATION This chapter consists of six topics: • SELECTING CONFIGURATION LEVEL • LEAVING CONFIGURATION LEVEL • SELECTING A CONFIGURATION PARAMETER • CHANGING THE PASSWORDS • NAVIGATION DIAGRAM • CONFIGURATION PARAMETER TABLES. In configuration level you set up the fundamental ...

  • Marathon Computer AACC 2000 - page 64

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 64 Selecting configuration level There are two alternative methods of selecting Configuration level : • If you have already powered up, then follow the access instructions given in Chapter 3, Access levels . Alternatively, press and together when powering up the controller. This will take you d ...

  • Marathon Computer AACC 2000 - page 65

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 65 LEAVING CONFIGURATION LEVEL To leave the Configuration level and return to Operator level Press until the ‘ Exit ’ display appears. Alternatively, pressing and together will take you directly to the ‘ Exit ’ display Use or to select ‘ YES ’ . After a two- second delay, the display ...

  • Marathon Computer AACC 2000 - page 66

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 66 NAVIGATION DIAGRAM (PART A) Instrument List inST LiSt 2rFn CArB CTrL Pid TYPE ctrL AcT REU cool LIN TiTd SEc dtYP PU m-A D1SA r-h ENAB PwrF Fwd.t none SbrT SB.OP FOP no bcd nonE GSch no Process Value List PU ConF uniT ° C dEc.p nnnn rnGL 0 rnGH 2000 Input Config List iP ConF inPT htc CJC Auto ...

  • Marathon Computer AACC 2000 - page 67

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 67 AL4 FSH LTch on bLoc on Logic Config LAb ConF id LoG Func Man Alarms Config AA ConF id RELY Func nor SEnS nor IFSH yes 2FSL no AL3 no AL4 no Plus Event Outputs Comms 1 Config Ha ConF id CMS Func bAud 9600 PrTY nonE rES FuLL dELY no Comms 2 Config JA ConF id NONE Module1 Config 1A ConF id dCrE ...

  • Marathon Computer AACC 2000 - page 68

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 68 Module2 Config 2A ConF id dCrE Func OP2 UaL.L 0 UALH 100 uniT mA OuTL 4.0 OuTH 20.0 Module3 Config 3A ConF id dCrE Func H-CO inPT Hr1n imP off inPL 0.0 inPH 2.0 UALL 0 UALH 2000 Module4 Config 4A ConF id rELY Func DIG SEnS inu 1FSH YES 2FSL no AL3 no AL4 no Module Config 4C ConF id rELY Func D ...

  • Marathon Computer AACC 2000 - page 69

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 69 Module Config 6A ConF id rELY Func PMV inPT HiLn imP Auto inPL -0.2 inPH 1.8 UALL -200 UALH 1800 Custom Config CUST ConF in1 0.0 UAL1 0.0 in2 1.0 UAL2 200.0 in3 2.0 UAL.3 350.0 in8 7.0 UAL.8 800.0 Calibration Config CAL ConF cAL nonE UCAL NO Pt1L Pt1H OF1L 0.0 OF1H 0.0 Pt2L Pt2H OF2L 0.0 OF2H ...

  • Marathon Computer AACC 2000 - page 70

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 70 CONFIGURATION PARAMETER TABLES Name Description Values Meaning inSt inSt Instrument configuration ZrFn Instrument Function Carb % Carbon CtrL Control type Pid PID control On.OF On/off control VP Boundless motorised valve control - no feedback required VP b Bounded motorised valve control - fee ...

  • Marathon Computer AACC 2000 - page 71

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 71 gsch Gain schedule enable no yes Disabled Enabled pV pV Process value config unit Inststrument units 0 C Celsius 0 F Farenheit 0 k Kelvin dec.p Decimal places in the none Display units blanked displayed value nnnn nnn.n nn.nn None One Two rng.l Range low Low range limit. Also setpoint limit fo ...

  • Marathon Computer AACC 2000 - page 72

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 72 Linear Input Scaling − The next 4 parameters only appear if a linear or sq rt input is chosen. inp.L Input value low inp.H Input value high VAL.L Displayed reading low VAL.H Displayed reading high Name Description Values Meaning SP SP Setpoint configuration nSP Number of setpoints 2 , 4 , 16 ...

  • Marathon Computer AACC 2000 - page 73

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 73 AL AL Alarm configuration Values The controller contains four ‘soft’ alarms, which are configured in this list. Once configured, they can be attached to a physical output as described in the alarm relay configuration list, ‘ AA Conf ’ . AL1 Alarm 1 Type see Table A Ltch Latching no / Y ...

  • Marathon Computer AACC 2000 - page 74

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 74 Name Description Values Meaning LA LA Digital input 1 configuration Action on contact closure id Identity LoG.i Logic input Func Function of input nonE No function The function is active mAn Manual mode select when the input has a contact rmt Remote setpoint select closure to the common SP.2 S ...

  • Marathon Computer AACC 2000 - page 75

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 75 Name Description Values Meaning AA AA Alarm relay configuration id Identity rELy Relay output Func Function nonE No function dIG Digital output SEnS Digital output sense nor Normal (output energises when TRUE, e.g. program events) inv Inverted (output de-energises when TRUE, e.g. alarms) The f ...

  • Marathon Computer AACC 2000 - page 76

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 76 Name Description Values Meaning HA HA Comms 1 module config id Identity of the module installed cmS 2-wire EIA-485 For ‘ id id ’ = ‘ cms ’ (Digital communications) use this parameter table: Func Function mod Modbus protocol mAr Marathon Monitors protocol bAud Baud Rate 1200 , 2400 , 48 ...

  • Marathon Computer AACC 2000 - page 77

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 77 JA JA module config NO configuration required Name Description Values Meaning 1A 1A / b b / C C (1) Module 1 configuration id Identity of module installed nonE Module not fitted rELy Relay output dC.OP Non-isolated DC output (1) If a dual-, or triple-, channel LoG Logic/ output module is insta ...

  • Marathon Computer AACC 2000 - page 78

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 78 2. To invert a PID output, the Val. H can be set below the Val.L Name Description Values Meaning For ‘ id id ’ = ‘ dC.OP ’, ‘ dc.rE ’, or ‘ dc.OP ’ use this parameter table: Func Function nonE Function disabled HEAt Heating output COOL Cooling output PV Retransmission of PV wSP ...

  • Marathon Computer AACC 2000 - page 79

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 79 For ‘ id id ’ = ‘ Pot.i (i.e. potentiometer input module) use this parameter table: Func Function nonE Function disabled rSP Remote Setpoint Fwd.i Feedforward input rOP.h Remote OP power max. rOP.L Remote OP power min. VPoS Motorised valve position VAL.L Displayed value low equivalent to ...

  • Marathon Computer AACC 2000 - page 80

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 80 3A 3A / b b / C C Module 3 configuration As per module 2 configuration, plus ‘ id ’ = ‘ dC.iP ’ For ‘ id id ’ = ‘ dC.iP ’ use this parameter table. THIS INCLUDES THE SECOND PV FUNCTIONS Func Function nonE Function disabled rSP Remote Setpoint Fwd.i Feedforward input rOP.h Remot ...

  • Marathon Computer AACC 2000 - page 81

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 81 Linear Input Scaling − The next four parameters only appear if a linear input is chosen. inP.L Input value low inP.H Input value high VAL.L Displayed value low VAL.H Displayed value high Name Description Values Meaning 4 A 4 A / C C Module configuration As per module AA configuration 5 A 5 A ...

  • Marathon Computer AACC 2000 - page 82

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 82 Cust 8-point Custom Linearisation (1) in 1 Custom input 1 VAL.1 Linearisation Value representing in 1 in 8 Custom input 8 VAL.8 Linearisation Value representing in 8 Note: 1. Custom Linearisation is only available when ‘ 3a-Conf ’or iP- ConF list has ‘ inpt ’ set to ‘ mV .C ’, or ? ...

  • Marathon Computer AACC 2000 - page 83

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 83 Name Description Values Meaning CAL CAL Calibration In this mode you can 1. Calibrate the instrument using a mV source - rcAL or ref source cal. 2. Offset the calibration to account for errors in actual sensor measurement and a ref sensor - UCAL or user calibration 3. Return to factory set cal ...

  • Marathon Computer AACC 2000 - page 84

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 84 Select ‘ YES ’ with or YES Start calibration Wait for calibration to buSy Busy calibrating complete. donE PV input calibration completed FAIL Calibration failed Note . When a DC input module is installed for the first time, or there is a requirement to change one, then the microprocessor i ...

  • Marathon Computer AACC 2000 - page 85

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 85 User calibration This chapter has five topics: • WHAT IS THE PURPOSE OF USER CALIBRATION? • USER CALIBRATION ENABLE • OFFSET CALIBRATION • TWO POINT CALIBRATION • CALIBRATION POINTS AND CALIBRATION OFFSETS To understand how to select and change parameters in this chapter you will nee ...

  • Marathon Computer AACC 2000 - page 86

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 86 User Calibration Enable The User calibration facility must first be enabled in configuration level by setting the parameter ‘ UCAL ' in the input conf list to ' YES '. This will make the User calibration parameters visible in Operator ‘ FuLL ’ level. Select configuration l ...

  • Marathon Computer AACC 2000 - page 87

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 87 Offset calibration Offset calibration is used to apply a single fixed offset over the full display range of the controller. To calibrate, proceed as follows: 1. Connect the input of the controller to the source device to which you wish to calibrate. 2. Set the source to the desired calibration ...

  • Marathon Computer AACC 2000 - page 88

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 88 Set Offset 1 Use or to set the offset value of Process Value 1 (PV1). The offset value is in display units Press Set Offset 2 Use or to set the offset value of Process Value 2 (PV2), if configured . The offset value is in display units. Press The table below shows the parameters which appear a ...

  • Marathon Computer AACC 2000 - page 89

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 89 Two-point calibration The previous section described how to apply a offset, or trim, calibration, which applies a fixed offset over the full display range of the controller. A two-point calibration is used to calibrate the controller at two points and applies a straight line between them. Any ...

  • Marathon Computer AACC 2000 - page 90

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 90 Select Low-point Calibration This is the Calibration Status display. This display shows that no input is selected for calibration. • nonE : No selection • ip1.L : Input 1 (PV1) calibration low-point selected • ip1.H : Input 1 (PV1) calibration high-point selected • ip2.L : In put 2 (PV ...

  • Marathon Computer AACC 2000 - page 91

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 91 Select High-point Calibration This is the Calibration Status display, again. Use / to select the parameter for the High-point Calibration of Input 1, ‘ ip1 .H ’. Press Adjust High-point Calibration This is the display for adjusting the High Calibration point of Input 1. The lower readout i ...

  • Marathon Computer AACC 2000 - page 92

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 92 Calibration points and Calibration offsets If you wish to see the points at which the User calibration was performed and the value of the offsets introduced, then these are shown in Configuration, in ‘ CAL- Conf ’. The parameters are: Name Parameter description Meaning pt1.L Low calibratio ...

  • Marathon Computer AACC 2000 - page 93

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 93 Parameter Table (Default) Home list Process Variable Target Setpoint Output power OP Auto/Manual Mode M-a Reference Number rEF Probe List Process Factor PF Milivolt Offset OFFS H-CO Compensation H-CO Probe Temperature Ptc Probe Millivolts Pmv Auxilliary Input Axin Care List Care CArE Measured ...

  • Marathon Computer AACC 2000 - page 94

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 94 User List Number 1 n1 Number 2 n2 Number 3 n3 Number 4 n4 Number 5 n5 Number 6 n6 Number 7 n7 Number 8 n8 Number 9 n9 Number 10 n10 Number 11 n11 Number 12 n12 Number 13 n13 Number 14 n14 Number 15 n15 Alarm List Alarm 1 Setpoint 1--- Alarm 2 Setpoint 2--- Alarm 3 Setpoint 3--- Alarm 4 Setpoin ...

  • Marathon Computer AACC 2000 - page 95

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 95 PID List Gain Scheduler Setpoint G.SP Current PID Set Set Proportional Band PID1 Pb Intergal Time PID1 ti Derivative Time PID1 td Manual Reset rES Cutback High Hcb Cutback Low PID1 Lcb Relative Cool Gain PID1 rEL.C Proportional Band PID2 Pb2 Intergal Time PID2 ti2 Derivative Time PID2 td2 Manu ...

  • Marathon Computer AACC 2000 - page 96

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 96 Input List Filter 1 FiLt Filter 2 FLt2 Filter 3 FLT3 Calibration CAL CJC Temperature CJC Output List Low Power Limit OP.Lo High Power Limit OP.Hi Output Rate Limit Oprr Forced Output Power FOP Cycle time OP1 CYC.1 Hysteresis OP1 hYS.1 OP1 Minimum On Time ont.1 Cycle time OP2 CYC.2 Hysteresis O ...

  • Marathon Computer AACC 2000 - page 97

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 97 Configuration Mode Parameters Inst Conf Function: O2, %C, Dewpoint, Redox Zr.Fn Control Type CtrL Instrument type: Monitor/ Controller tYPE Control Action Act Control Time Units ti.td Manual Key Enable m-A dtYP dtYP Feedforward Type Fwd.t Bumpless PD Control Pd.tr Sensor Break Action Sbr.t For ...

  • Marathon Computer AACC 2000 - page 98

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 98 Alarm Conf Alarm 1 Type AL1 Alarm 1 Latch Ltch Alarm 1 Block bLoc Alarm 2 Type AL2 Alarm 2 Latch Ltch Alarm 2 Block bLoc Alarm 3 Type AL3 Alarm 3 Latch Ltch Alarm 3 Block bLoc Alarm 4 Type AL4 Alarm 4 Latch Ltch Alarm 4 Block bLoc LA/B Conf Logic Input A Ident id Logic Input A Slot Function Fu ...

  • Marathon Computer AACC 2000 - page 99

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 99 Module 2A Conf Module 2A Ident id Module 2A Slot Function Func Module 2A Low Value VAL.L Module 2A High Value VAL.H Output 2A units unit Module 2A Low Output Range Out.L Module 2A High Output Range Out.H Module 3A Conf Module 3A Ident id Module 3A Slot Function Func Module 3A Input Type inPt M ...

  • Marathon Computer AACC 2000 - page 100

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 100 Module 6A Conf Module 6A Ident id Module 6A Slot Function Func Module 6A Input Type inPt Module 6A Sensor break Impedance iMP Module 6A Input Value Low inP.L Module 6A Input Value High inP.H Module 6A Displayed Value Low VAL.L Module 6A Displayed Value High VAL.H CUST Conf Input 1 in 1 Value ...

  • Marathon Computer AACC 2000 - page 101

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 101 Special Parameters ABC Constant Transfer A Constant low 16 bits A Constant high 16 bits B Constant low 16 bits B Constant high 16 bits C Constant low 16 bits C Constant high 16 bits Transfer Location, 0 - 15 Transfer Action; 81=write, 82=read ...

  • Marathon Computer AACC 2000 - page 102

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 102 INDEX ACCESS LEVELS .......................................................................................... 46 Adaptive tune ....................................................................................... 38, 54, 73 Adjust low-point calibration ..................................... ...

  • Marathon Computer AACC 2000 - page 103

    Marathon Monitors Inc. AACC 2000 Carbon Nov. 1, 1997 103 Two-point calibration .................................................................................... 88 User calibration ............................................................................................... 84 ...

Manufacturer Marathon Computer Category Computer Monitor

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A complete manual for the device Marathon Computer AACC 2000, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Marathon Computer AACC 2000 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Marathon Computer AACC 2000.

A complete Marathon Computer manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

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2. Contents - index of all tips concerning the Marathon Computer AACC 2000, that we can find in the current document
3. Tips how to use the basic functions of the device Marathon Computer AACC 2000 - which should help us in our first steps of using Marathon Computer AACC 2000
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Marathon Computer AACC 2000
5. FAQ - Frequently Asked Questions
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