PMA KS 800 Functional Description
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PMA KS 800 Functional Description

Multi-temperature controller
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  • Page 2 ©PMA Prozeß- und Maschinen-Automation GmbH. Printed in Germany All rights reserved. No part of this document may be reproduced or published in any form or by any means without prior written permission by the copyright owner. A publication of PMA Prozeß- und Maschinen-Automation GmbH Subject to change without notice PMA Prozeß- und Maschinen-Automation GmbH...

  • Page 3: Table Of Contents

    Multi-Temperature-Controller KS 800 Contents Introduction ........... . .
  • Page 4 Multi-Temperature-Controller KS 800 Self-tuning several controllers in a group ......8.5.1 Starting the group self-tuning ......
  • Page 5 Multi-Temperature-Controller KS 800 23.2.4 C180 analog signal allocation ......23.2.5 C190 digital signal allocation ......
  • Page 6 Multi-Temperature-Controller KS 800 9499 040 49211...

  • Page 7: Introduction

    (e.g. 8-channel three-point stepping controller and digital in- puts). Basic structure The basic KS 800 structure for control function handling is shown below. The unit is divided into four main groups: input functions...

  • Page 8: Functions

    Multi-Temperature-Controller KS 800 Signal distribution The conditioned input signals are passed to the controller cyclically (together with the relevant control parameters). Functions Sequence control The sequence control describes the statuses and priorities in the control algorithm and the condi- tions and signals for other function statuses.

  • Page 9: Input Signal Processing

    0...1000°C ) not acc. to DIN The lower measuring limit of KS 800 is 0 mV for all thermocouple types, i.e. 0°C or 32°F. The upper measuring limit is the upper operating temperature of the relevant thermocouple type. The thermocouples are monitored for wrong polarity and break.

  • Page 10: Resistance Thermometer

    Multi-Temperature-Controller KS 800 2.3.2 Resistance thermometer Resistance thermometers of type PT 100 to DIN/IEC 751 can be connected in 2 or 3-wire circuit. The lower measuring limit is -100°C. The upper measuring limit is +850°C. The thermometer current is approx. 0,25 mA.

  • Page 11: Measurement Value Correction

    Multi-Temperature-Controller KS 800 Measurement value correction A method which permits zero offset, gain adjustment both combined by 4 parameters is used. X2out X2in X1out X1in Measured input value The parameters can be determined for any working points: X1in old displayed start value...

  • Page 12: Application Examples

    Multi-Temperature-Controller KS 800 2.4.1 Application examples: The units can be any variables. 1. Gain adjustment The straight line from 0 ... 900 shall be 105 instead of 100 in working point 100. x1in and x1out = 0 , x2in = 100 and x2out = 105.

  • Page 13: Digital Input Signals

    Multi-Temperature-Controller KS 800 2.5.3 Digital input signals Signal description Conn. terminal Active with Par1/Par2 IN/OUT13 C700_1 = 3 W/W2 IN/OUT16 C190_1 = 1 Coff IN/OUT14 C190_2 = 1 Leck IN/OUT15 C500_2 = 4 Par1/Par2: Parameter switch-over. Each controller can contain 2 parameter sets, which can be activated by selection.

  • Page 14: Controller Block Diagram

    Multi-Temperature-Controller KS 800 Controller block diagram Function for each controller (8 x per unit) Sequence control Controller status control Adaptation Start-up circuit Sequence control Controlled adaptation Controller self-tuning Mean value for output control Closed loop control Signaller 1 output Signaller 2 output...

  • Page 15: Set-Point Functions

    Setpoint processing for set-point control The effective set-point for KS 800 is handled by various pre-processing functions, before it is used for the control algorithm. When the controller is switched on, the non-volatile set-point Wnvol is effective, i.e. Wvol = Wnvol.

  • Page 16: Function Block Protocol

    Function block protocol Data structure Due to the large variety of information processed in KS 800, logically related data and actions are grouped in function blocks. A function block has input and output data, parameter and confi- guration data. 41 function blocks are defined for KS 800. They are addressed via fixed block addresses (FB no.).

  • Page 17: Structure Of Configuration Words

    Multi-Temperature-Controller KS 800 Structure of configuration words The configuration words listed in the following code tables comprise several partial components which can be transmitted only in common. The data in the table must be interpreted as follows: Example Code Descr.
  • Page 18 Multi-Temperature-Controller KS 800 To A: Unit_State1 Bit no. Name Allocation Status "0" Status "1" "0" always "0" instrument status online configuration D2...D4 "0" always "0" parameter update "1" always "0" parity To B: DP Err Bit no. Name Allocation Status "0"...
  • Page 19 Multi-Temperature-Controller KS 800 To D: SWopt Version "10³" "10²" "10" "1" Basic version Water cooling To E: SWCod "10³" "10²" "10" "1" 7th digit 6th digit 5th digit 4th digit Example: Value "SWCod = 7239" means that the software for the addressed instrument contains code number 4012 157 239xx.
  • Page 20 Multi-Temperature-Controller KS 800 To H: State_alarm_out Bit no. Name Allocation Status "0" Status "1" Relay 1 Relay 2 Relay 3 do 1...12 AL Alarm output short circuit OUT1...OUT12 HCscAL Alarm output heating current short circuit "ß" always "0" "1" always "1"...

  • Page 21: Controller Statuses And Status Priorities

    Multi-Temperature-Controller KS 800 Controller statuses and status priorities The priorities are sorted according to ascending order (0=low; 7=high) Priority 0 automatic (low) The controller is in automatic mode (control operation). Set-point definition is possible. Priority 1 Tune, run Self-tuning is active and handles the self-tuning procedure independently.

  • Page 22: Priority 2 Tune, Error

    Multi-Temperature-Controller KS 800 Priority 2 Tune, error When the controller self-tunging was finished or cancelled with an error, the controller switches over to manual mode and outputs a constant correcting variable with the value of stable correc- ting variable YOptm. Adjustment of the manual correcting value via interface is not possible in this status.

  • Page 23: Priority 7 Y_Track

    Multi-Temperature-Controller KS 800 Priority 7 Y_Track During the Y_Track status, the controller tracks the correcting variable to a pre-defined value. The function is handled internally by the controller. The operating principle is described exactly in section Cascade control. Priority 8 Controller off (high)

  • Page 24: Automatic - Manual Switch-Over

    Multi-Temperature-Controller KS 800 Automatic - manual switch-over According to determination, automatic - manual switch-over via the interface is possible. The controller statuses resulting from the signal priority are as follows: Priority Controller Y-Track Controller Sensor failure Controller status manual Automatic...

  • Page 25: Self-Tuning For Single-Loop Controllers

    Multi-Temperature-Controller KS 800 Self-tuning for single-loop controllers For determination of the optimum control parameters, controller self-tuning is possible. Optimi- zation can be started and finished from automatic or manual mode. It is also active with the start- up circuit configured.

  • Page 26: Start From Automatic Mode

    Multi-Temperature-Controller KS 800 8.1.3 Start from automatic mode After starting, the stable correcting variable YOptm is output and the controller waits, until the process is at rest. When "process at rest" was detected, self-tuning starts automatically. During this time, the set-point can be changed.

  • Page 27: Set-Point Monitoring

    Multi-Temperature-Controller KS 800 Set-point monitoring For keeping the process at a safe state, continuous monitoring prevents the set-point from being exceeded. When exceeding the set-point, self-tuning is cancelled, an error message is genera- ted, the controller switches over to manual mode and the stable correcting variable YOptm is output.

  • Page 28: Common Start Of The Cooling Attempt For All 3-Point Heating/Cooling Controllers

    Multi-Temperature-Controller KS 800 8.5.4 Common start of the cooling attempt for all 3-point heating/cooling controllers After group controller self-tuning was started by the coordination function, no further controller coordination is required. Exception: If 3-point heating/ cooling controllers participate in the attempt, the cooling attempt of these controllers is started in common by the coordinator function.

  • Page 29: Controlled Adaptation

    Multi-Temperature-Controller KS 800 Increase separationof Cancellation: Optimisation cancelled due to exceeded set- process value (X) and point risk. set-point (W) during start-up. Finished: Optimisation cancelled due to exceeded set-point risk (reversal point not reached so far safe estimation). increase Ymax or Cancellation: reduce YOptm.

  • Page 30: Control Function Parameters

    Multi-Temperature-Controller KS 800 Control function parameters The default parameters marked with x are adjusted dependent of version. Signaller 2-pnt. 3-pnt. con- 3-pnt. 1 output 2 outputs contr. troller stepp.con- heat./cool. troller Para- Range Default meter 0,1...999,9 0,1...999,9 0...9999 0...9999 0,4...999,9 0,4...999,9...

  • Page 31: Signaller

    Multi-Temperature-Controller KS 800 Signaller Signalling function The signalling function is a controller function and must be specified for each individual controller by configuration C100_3. This configuration can be used for processes with low Tu and small Vmax. The control oscilla- tions can be determined by: X0 = Xmax ×...

  • Page 32: Two-Point Controller

    Multi-Temperature-Controller KS 800 Two-point controller The parameters required for this controller are tranferred from: Function block controller type no.:91, function Parameter set x, function number 6 and 7. (Function number 6 = parameter set 1; function number 7 = parameter set 2) Abbr.
  • Page 33 Multi-Temperature-Controller KS 800 Xp1 = 100% 100% direct working- point Y0 inverse x, w The static characteristic of the two-point controller is identical with the one of the continuous controller. The difference is that a duty cycle instead of a linearly variable current signal is output (relay contact, control output 0/24V).

  • Page 34: Three-Point Dpid Controller

    Multi-Temperature-Controller KS 800 Three-point DPID controller The parameters required for this controller are transferred from: Function block controller type no.:91, function Paramset x, function number 6,7. Abbr. Description Range Default Proportional band 1 0,1...999,9 % 100 % Integral time 1 0...9999 sec...
  • Page 35 Multi-Temperature-Controller KS 800 The figures show the static characteristic for inverse and direct action with Tn = 0. Direct / in- verse switch-over only causes an exchange of the outputs for "heating/cooling". The terms "hea- ting" and "cooling" are used accordingly for all similar processes (batching acid/lye, ...). The neutral zone is adjustable separately for the trigger points (Xsh1, Xsh2) and need not be sym- metrical to the set-point.

  • Page 36: Three-Point Stepping Controller

    Multi-Temperature-Controller KS 800 Three-point stepping controller In order to match the adjusted Xp1 to the motor actuator travel time, the travel time Tm must be adjusted. The smallest positioning step of the controller is 0,1sec. Adjusting the neutral zone With excessively frequent output switching, the neutral zone X can be increased.
  • Page 37 Multi-Temperature-Controller KS 800 In the figure below, the static characteristics of the three-point stepping controller configured as inverse and direct is shown. The hysteresis shown in this figure is practically without importance, however, it can be calculated from the adjustable pulse length Tpuls <10ms.
  • Page 38 Multi-Temperature-Controller KS 800 Controller structure: Three-point stepping controller Controller configuration C101 CMode 0, CDiff 0, Cfail 1, CAnf 0 Controller configuration C100 CFunc 07, CType 0, Wfunc 0 Function block controller type no.:91, function Algorithm function no.: 3 neutral zone in % referred to X0...X100 of variable input 1 actuator response time in sec Tpuls min.

  • Page 39: Forcing Of Switching Outputs

    Forcing of switching outputs Input and output "forcing" means determination of the input or output level from a control system. With KS 800, the outputs for heating (OUT1...OUT8) and cooling (OUT9...OUT12 and IN/OUT13...IN/OUT16) can be "forced" (only output forcing). As a general rule, outputs which are not used for a control function are enabled for forcing:...

  • Page 40: Continuous Controllers

    Multi-Temperature-Controller KS 800 Continuous controllers With KS 800, up to 8 outputs can be used as continuous controllers. Standard current or stan- dard voltage output signal is dependent of hardware. With standard current signal, switch-over between "dead zero" (0...20 mA) or "live zero"...
  • Page 41 Multi-Temperature-Controller KS 800 Xp1 = 100% 100% direct working- point Y0 inverse x, w PD-behaviour ( Tn = 0 ) The working point is determined with X=W output Y = 50% +Y0. For keeping the process lined out, a certain amount of energy dependent of set-point is required.

  • Page 42: Water Cooling

    Multi-Temperature-Controller KS 800 Water cooling KS 800 is equipped with a special control algorithm for water cooling which is activated if con- figured accordingly. This setting is possible separately for each channel. The evaporation effect occurs only above defined temperatures. Water cooling below these temperatures can be disabled.
  • Page 43 Multi-Temperature-Controller KS 800 Definitions: Duration of cooling pulse (Parameter) The cooling pulse duration is constant. It is adjusted by parameterT (which is already puls provided). (min. switch-on pulse with 3-point stepping controllers). Dependent of the control function configuration, the signification of T...

  • Page 44: Water Cooling Controller Self-Tuning

    Multi-Temperature-Controller KS 800 Control parameters T and T for the cooling controller There are important differences in the dynamic conditions for heating and cooling processes. Therefore, independent parameters for heating (X ) and cooling (X ) are determined during self-tuning with water cooling controllers. Switch-over is automatic when the correcting variable passes the zero with a hysteresis of 2% symmetrical to the zero.

  • Page 45: Cascade Control

    Multi-Temperature-Controller KS 800 Cascade control For cascade control, one master and one or several slave controllers the set-point of which is the analog master control output are used. As long as cascade control remains at two levels (1 master controller with 1 level slave control- lers) any combination is possible: from 1 master with 7 slaves up to 4 masters with 4 slaves.

  • Page 46: Controller Behaviour With Switch-Over

    Multi-Temperature-Controller KS 800 Special input signals of the cascade controller for cascade operation: Wext: The master provides a continuous output signal Ypid in 0 ... 100%, which is connected with the internal Wext input of the cascade controller - as configured in C180.

  • Page 47: Example Of Cascade Control With Up To 7 Slave Controllers

    Multi-Temperature-Controller KS 800 17.4 Example of cascade control with up to 7 slave controllers w_w2 Coff CASC_open wi_e "or" cfail Ypid Wext orun Master Slave 1 track_y y_track Standardisation 0...100% Xeffn w_w2 Coff wi_e CASC_open "or" cfail orun Wext Slave 2 Standardisation 0...100%...
  • Page 48 Multi-Temperature-Controller KS 800 Configuration of the master controller: C100_43 = 02 (master with output Ypid) C100_1 (set-point) C180_3 (no Wext) Configuration of slaves: C100_43 = any C100_1 (set-point / cascade) C101_2 (last mean Y) C180_3 (Wext = Ypid from master channel x=1-8) The operating principle is as described for simple cascade control.

  • Page 49: Start-Up Circuit

    Multi-Temperature-Controller KS 800 Start-up circuit The start-up function is a controller function and must be specified for each individual controller by configuration C101_1 = 1 (with start-up circuit). The start-up function only remains active if the controller runs in automatic mode; any other mode causes cancellation of the start-up function.
  • Page 50 Multi-Temperature-Controller KS 800 ANFAHR_HALTETZEIT status When the process value falls by > LCA (40K, fixed), the start-up circuit switches to the AN- FAHR_LIMIT_Y status. When the set-point for normal mode (W) falls below the requested start- up set-point (Wa), the holding time is cancelled and the start-up circuit switches to the AN- FAHR_OFF status.

  • Page 51: Mean Value Formation For The Output Hold Function

    Multi-Temperature-Controller KS 800 Mean value formation for the output hold function Mean value formation is only effective for configuration with C101_2 = 5. The parameters required for this purpose are transferred from: Mean value formation is a controller function and must be specified for each individual controller by configuration C101_2.

  • Page 52: Heating Current Monitoring

    Multi-Temperature-Controller KS 800 Heating current monitoring 20.1 Heating current monitoring The heating current monitor is limited to controller outputs 1...8 and provides monitoring for heating circuit undercurrent and actuator short circuit. Monitoring can be done at an adjustable cycle: All controllers except the one to be monitored are switched off (independent of control) and the heating current is measured.

  • Page 53: Heating Current Alarm, Reset And Quick Test

    Multi-Temperature-Controller KS 800 tting) and the measured value is transmitted in the 3. cycle. For electromechanical switching elements, the measurement time must be extended considering the inertia. This is by entry a "8" in the hundreds position (e.g. 854). The cycle time remains unchanged.

  • Page 54: Evaluation Of Heating Current Measurement

    Multi-Temperature-Controller KS 800 Evaluation of heating current measurement The measuring range of the heating current input is 30mA AC for direct connection to standard current transformers. Below HC100, specification which current (in A) actually flows when the current transformer delivers 30mA AC is required.

  • Page 55: Heating Current Scaling Factor

    A scaling factor is applicable to all converters in conjunction with KS 800. The KS 800 heating current input was initially designed for a converter with a transmission ratio of 1:1000, at a max. primary current of 30A, i.e. I = 30mA.

  • Page 56: Alarm Handling

    Multi-Temperature-Controller KS 800 Alarm handling For each controller, four alarm trigger points can be adjusted independently (without determina- tion of names and abbreviations!). However, using the expressions used in the drawing is purpo- seful. The switching hysteresis is equal for all four trigger points.
  • Page 57 Multi-Temperature-Controller KS 800 W100 high alarm xsd1 xsd1 high/high alarm low/low xsd1 xsd1 Configuration word C600 and C601 determines which signal shall be monitored by the alarm function and how the alarm functions are used. Function block alarm type no.:46, function General, function number 0.

  • Page 58: Configuration

    Multi-Temperature-Controller KS 800 Configuration 23.1 General The KS800 controller configuration is described in this section. In the configuration, the function required for an application are selected from a variety of functions. By configuration, the basic structure for an application solution is determined. Digits which cannot be selected are marked by an "0".

  • Page 59: C101 Additional Controller Configuration

    Multi-Temperature-Controller KS 800 Wfunc: (set-point function) Set-point W Set-point/cascade W (with slave controller: W = Y from ma- ster controller) 23.2.1.1 C101 additional controller configuration (adjustable per controller) The following additional adjustments are possible via the additional controller configuration: C101...

  • Page 60: Control Loop Monitoring (Loop Alarm)

    Multi-Temperature-Controller KS 800 23.2.2 Control loop monitoring (loop alarm) (adjustable individually for each controller) Control loop monitoring can be activated individually for each controller. Hereby, the overall control loop comprising sensor, controller, switching element, (power) fuse, heatingg or cooling and all leads is monitored.

  • Page 61: C150 Heating Current And Output Monitoring

    Multi-Temperature-Controller KS 800 Control loop monitoring is controlled via configuration word C102: C102 Digit Description LoopOn Default Definition always LoopOn: control loop monitoring 23.2.3 C150 Heating current and output monitoring and additional configuration C151 (ad- justable for each unit) Adjustment of cycle time for heating current, leakage current and output monitoring (ad-...

  • Page 62: C151 Additional Heating Current Configuration

    Multi-Temperature-Controller KS 800 23.2.3.1 C151 additional heating current configuration (adjustable for each unit) The additional heating current configuration determines the output of the heating current statuses to the alarm output. C151 Digits Description DestHC DestLeck DestOuterror Default Determination always DestHC:...

  • Page 63: C190 Digital Signal Allocation

    Multi-Temperature-Controller KS 800 23.2.5 C190 digital signal allocation Control signals for set-point processing (adjustable for each controller) C190 Digits Description SCoff Sw/W2 Default Determination always Scoff: (switch off controller outputs of control function) controller can only be switched off via the interface separately for each individual...

  • Page 64: Inputs

    Multi-Temperature-Controller KS 800 23.3 Inputs In this main group, the signal inputs for the selected controller configuration are determined. Like with the control function configuration, a large number of applications can be covered by determi- nation of the main configuration.

  • Page 65: Input Scaling

    Multi-Temperature-Controller KS 800 23.3.2 Input scaling Input scaling is only possible with DC voltage input. With input scaling, different physical quanti- ties are allocated to the electrical input voltages for (span) start and end. (e.g. 0mV 0l/h and 80mV 1000l/h; 0mV...

  • Page 66: C205 Additional Configuration

    If the sensor of controller 8 is a ther- mocouple, compensating lead must be used up to KS 800. If the sensor is a resistance thermometer, copper lead can be used.

  • Page 67: C213 Sensor Failure

    Multi-Temperature-Controller KS 800 23.3.3.2 C213 sensor failure C213 Digits Description XFail Default Determination only with Fail = 3 (C205) XFail: (substitute value with sensor failure Numeric value: -999 ... 9999 23.3.3.3 C214 filter time constant C214 Digits Description Default Determination...

  • Page 68: Configuration Examples

    Multi-Temperature-Controller KS 800 23.4 Configuration examples 23.4.1 Thermocouples With a thermocouple, the type of temperature compensation, the TC value and the signal beha- viour with sensor break can be determined. The behaviour is determined with configuration word C205. Configuration of: C200, C205, C210, C213, C214 23.4.2 Resistance thermometer...

  • Page 69: Outputs

    Entry of output level via the interface (forcing) Cooling output of controller 5 Switch over parameter set 1/2, 1 input for all controllers configured accordingly General digital input, no processing in KS 800, evaluation via the system bus. Fkt_dio2: (IN/OUT14)

  • Page 70: Alarm Outputs

    Multi-Temperature-Controller KS 800 23.5.2 Alarm outputs OUT17...OUT19 23.5.2.1 Action C530 Used for configuration of the alarm output OUT17 ...OUT19 configuration (adjustable for each unit). C530 Digits Description Mode_do17 Mode_do18 Mode_do19 Default Determination always Mode_do17: (alarm output 1: OUT17) no alarm output...

  • Page 71: Analog Outputs

    Multi-Temperature-Controller KS 800 23.5.3 Analog outputs In addition to the function as (analog) controller outputs, these analog outputs can output also other variables (transmitter function): process value set-point correcting variable forcing The dead zero (0...20mA) or live zero (4...20mA) output range is determined in common for all analog outputs (in C904) and independent of use (allocation) of the individual outputs.

  • Page 72: C600, C602, C603, C604 Type Of Alarms

    Multi-Temperature-Controller KS 800 23.5.3.1 C600, C602, C603, C604 type of alarms In C600, C602, C603 and C604, the alarm type is configured (adjustable individually for each controller). With common alarm configuration selected in C904, there is only C600, which is valid for all alarms.

  • Page 73: C601 Alarm Target

    Multi-Temperature-Controller KS 800 23.5.3.2 C601 alarm target In C601, the target for output of a trigger point to the output is configured (adjustable for each controller). C601 Digits Description DestLL DestL DestH DestHH Default Determination always always always always DestLL:...

  • Page 74: C700 Controller Self-Tuning

    Multi-Temperature-Controller KS 800 23.5.4 C700 controller self-tuning For adjustment of the type of controller self-tuning and type of controlled adaptation (adjustable for each unit). C700 Digits Description OMode OCond OGrp OCntr Default Determination OMode: (controller self-tuning) based on the calculated process characteristics Tu and Vmax.

  • Page 75: Additional Functions

    Note: Preset address "0" should not be changed. As this interface provides a "point-to-point connection", address changing is not purposefull. If this address is changed into an un- known address, building up the communication between PC and KS 800 again is very difficult.

  • Page 76: Com2 Interface

    Multi-Temperature-Controller KS 800 23.5.6 COM2 interface Address and Baudrate for the COM2-interface can be adjusted for each KS 800 via hardware or software. Hardware address adjustment is possible within "01" and "99". In position "00", the address stored in EEPROM is taken over during switch-on and can be changed via software. The ad- dress adjusted by switch position has priority and cannot be changed via software.

  • Page 77: C902 Baud Rate Com2 Bus Interface

    Multi-Temperature-Controller KS 800 23.5.6.1 C902 Baud rate COM2 bus interface The Baudrate of the serial interface COM2 (bus interface, sub-D connector) is configured in this configuration word (individually adjustable for each instrument). The Baudrate must be identical with master (PLC, operating unit) and KS800, otherwise, no communication is possible.

  • Page 78: C904 Mains Frequency, Alarm And Current Output Configuration

    Multi-Temperature-Controller KS 800 23.5.7 C904 mains frequency, alarm and current output configuration For optimum suppression of mains frequency interference, the mains frequency can be configured in Frq . From operating version 5 and instrument number 8385 (January 2002) configuration of the four limit values for each controller channel is possible individually on Alm-Ver : alarm source, funct- ion and error output.

  • Page 79: Special Functions

    Multi-Temperature-Controller KS 800 Annex Special functions For some users, KS 800 was equipped with special functions according to the user specifica- tions. These functions are not of general interest and need not be taken into account by the normal user.
  • Page 80 With the alarm limits switched off, the measurements are treated as if the range was not excee- ded, i.e. mean value formation is always provided. KS 800 does not recognize settings which do not make sense, e.g. two adjacent controllers are mean value controllers. These preclusions must be taken into account by the programmer.

  • Page 81: Configuration

    Multi-Temperature-Controller KS 800 24.1.1 Configuration This special function is activated in configuration word C100. Mean value formation is determined in digit 2. (For better clarity, the overall configuration word C100 is described again below.) C100 Digit Description CFunc Wfunc Default...

  • Page 82: Safety Limiter With Holding Function

    Safety limiter with holding function Each one of the 8 KS 800 controllers can be used as a safety limiter with holding function. If this alarm contact has responded once, it does not return to the "good condition" automatically. For de-activating the alarm, 2 conditions must be met: 1.
  • Page 84 Subject to alteration without notice. © PMA Prozeß- und Maschinen-Automation GmbH Printed in Germany 9499 040 49211 (11/2004) P.O.B. 31 02 29, D - 34058 Kassel Germany...

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