Smoke Controller Manual ENG.cdr
Contents
1. Xf F f m 10 d log Xf or m 10 d log xXu depending on which input is chosen for the control HFC or AIO where U1 U2 F d areparameters of the controller defining respectively clear reference level for clear reference level for clear reference level for f and distance between the sender and receiver of the optical system Monitoring mode will be set anytime the controller is restarted by powerup or by Res button Switching to Monitoring mode from PARAMETERS mode is also possible by pressing and holding the 4 button The PARAMETERS mode gives access to all parameters of the controller needed to set up the profile control and view of measured data Pressing will enter the Monitoring mode and the display will read Parameters Sy 1 000 My Sy 1 000 My off Sm 0 300 Mm All 36 parameters are placed on 18 lines by two per line The blinking cursor can be used to navigate to the mnemonics of the desired parameter Pressing again will move the cursor onto the value of the selected parameter and it can be modified by the arrow keys The arrow keys are multi speed and when held down the value can be changed more rapidly The new value of the parameter will be saved and set by pressing the 2 button once more and the cursor will move back to the mnemonics 5 Display screens of the controller in Monitoring mode In Monitoring mode the controller constantly reads the status of the fire detector test t2. again will put the cursor in the position of changing the value of the selected parameter by the means of the arrow keys The controller has a RS232 unit to provide connection to a PC and allow for a more sophisticated proceeding of the fire test tunnel data There is a special communication protocol which specifies the way the controller constantly sends out the values of the parameters of the smoke tunnel Thus computer systems and applications can be developed for collecting all this data and proceed with archiving and displaying it 2 Technical specifications 2 1 Inputs 00 07 discrete 0 24 V 20 mA AI0 AI1 AI2 analog with variable 0 5 V amplification coefficient Ko 1 to6 AIO AII only programmable offset AJ3 analog for Pt100 thermistor 15 to 250 C HFC counting input 0 5 V 55000 Hz 2 2 Outputs O1 alarm opto isolator open collector 0 30V 20mA O2 airing opto isolator open collector 0 30V 20mA Ra blinding open collector 0 30V 20mA Rb control open collector 0 30V 20mA 2 3 Indication inner and technological parameters 2x16 LCD smoke alarm and ramping light diodes 2 4 Parameters technological 10 items feedback 4 items bias 10 items inner 10 items 2 5 Communication interface to PC RS 232C 2 6 Keyboard 2 7 Power supply 2 8 Size 2 9 Ambient temperature 8 keys membrane 187 242 V 48 62 Hz 96x96x135 mm Oto 50 C 3 Keyboard and Indic
3. used for the control variables off AIO and AIL on HFC and AIL acceleration rate per minute for ramping onm 0 000 5 000 defines the type of blinding o ff no blinding same on reset ot startup of the controller b11 blinking mode of blinding accordingto PU and Pd on blinding constantly on until MD change time in seconds for blinding on Conly if MD b11 00 0 99 9 time in seconds for blinding off Conly if MD b11 00 0 99 9 reference level for analoginput AIO 0 000 5 000 time in seconds to integrate the control variables 2 10 reference level for analoginput AI1 0 000 5 000 number of responses by the tested detector before waiting before airing and the actual airing 2 0 RC Kp Td Ti rt ri rd TC reference level for counting input HFC 0 55000 type of remote control on RS232C o ff no remote control only data is sent out on RS232C by the controller on fullremote control on RS232C proportional PID feedback coefficient 00 0 99 9 differential PID feedback constant in seconds 00 0 99 9 integral PID feedback constant in seconds 000 999 preliminary time before control starts in seconds 00 0 99 9 after pressing RUN the controller will output only the bias value ri for rt seconds After that the green diode will light up to indicate start of the actual control initial value of output bias in percent 00 0 99 9 acceleration rate of output bias in percent pe
4. 139 Control Byte gt lt 23 176 117 Control Byte 210 gt lt 23 176 117 Control Byte 210 gt with following explanation of the symbols mod and d V denote the arithmetic operations modulo and division SP is the set value t isthe temperature in the tunnel rounded to tenths of degree X X denote arbitrary byte bit dyn indicates if the controller is in ramping mode 1 ramping 0 static prg indicates ifthe controller is in PARAMETERS mode pid indicates that RUN is pressed and a new control routine is requested ramp indicates that Run is pressed and the set value is ramped but the endpoint is not reached yet wai t indicates that the controller still waits to start the actual control routine and the preliminary time rt has not passed yet Anormal smoke control operation should send the flags in the following order dyn 1 pid 0 ramp 0 wait 1 initial startup or manual reset pid 1 ramp 1 wait 1 Run ispressed and preliminary time rt running pid 1 ramp 1 wait 0 actualcontrol on ramp started pid 1 ramp 0 wait O endoframping and waiting for reset 10 8 Mechanical connection and mounting The controller is assigned for mounting on facet panels of electrical units The slot for mounting should have a square shape of 92 0 6 x 92 0 6 mm To secure the controller on the panel use the attaching screws The connector pin attachment of the controller is pictured on its rear panel The connecting w
5. Industrial electronic yet ens V Bulgaria Pleven 5800 27 Osogovo s EMA tel fax 359 64 870172 tel 359 64 870170 e mail office vema bg com http vema bg com Programmable controller VPC844 for fire detector test tunnels PROGRAMMABLE CONTROLLER VPC844 USER S MANUAL 1 Introduction The microprocessor programmable controllers VPC844 offer optimal comfort of service and visualization of parameters and processes in fire detect test tunnel They are designed to control the level of smoke thickness in a fire detect test tunnel in both static and dynamic mode The smoke level is measured by one frequency and two voltage sensors and controlled by one of the discrete outputs VPC844 controller has analog input for measuring the temperature in the tunnel via thermistor Pt 00 Output signal for smoke level control is transistor open collector There are three more output of the same type airing optoisolated blinding and alarm optoisolated Technological data of the fire detect test tunnel are displayed on four screens in Monitoring mode including the level of smoke thickness temperature responses from fire detectors as long as some of the inner parameters of the controller in PARAMETERS mode The parameters of VPC844 can be accessed and changed by the inbuilt keyboard Pressing will invoke the PARAMETERS mode of the controller and using the arrow keys any parameter can be chosen by the display cursor Pressing
6. Xu Xf defined according to the following formulas Xu U1 U y U2 U Xf F f where f and Ware the values of the inputs HFC AIO AIl and m 10 d log Xf or m 10 d 1og Xu depending on the control input HFC or AIO The parameter d denotes the distance between the sender and the receiver of the optical system 5 3 Screen 3 Monitoring control values m 0 421 M 0 417 y 0 921 yY 0 917 y 0 994 T 23 7 M 0 094 T 23 7 when control on HFC A I0 when controlon ATI Mm sta dyn My sta dyn The first line of this screen indicates the current measured value and the set value of the controlled variable m or y according to the Mm and My parameters The set value will be indicated only during the control procedure e g after pressing the RUN button and the initial preliminary time passed Outside the actual control procedure and during the preliminary state the set value will be indicated as The second line will display the current value of the non controlled variable and the current temperature in the tunnel When no thermistor is connected to AI3 the display willread T Coff 5 4 Screen 4 Captured readings of m and y onresponse by the digital inputs no si gn al so far no response from the detectors so far since T 24 1 the last reset of the controller by Res button only one detector has responded on input 2 2m 0 174 5 The controller jumps automatically to this screen to display
7. ation VPC8 amp 44 controller is equipped with two line LCD indication for displaying the values and mnemonics of the parameters and data of the fire detect test tunnel and the controller itself Three light diodes indicate the following processes smoke red diode alarm yellow diode dynamic mode ramping green diode Controller s keyboard has eight keys four arrows and the buttons 4 Res CRdy and Run The user can navigate through four screens in Monitoring mode using the arrow keys In PARAMETERS mode all parameters can be accessed and changed using the H button Res button restarts the controller and sets it in Monitoring mode Rdy button serves for picking clear reference levels in Screen 1 in Monitoring mode RUN button starts anew control procedure of the controller according to the current parameters 4 Controller modes and basic parameters VPCS amp 44 controller can work in two modes Monitoring and PARAMETERS Monitoring mode serves for checking the value of the fire detect test tunnel parameters in four screens User must choose which input signal pair lt HFC AI1 gt or lt AI0 AI1 gt will define the data on the screens using the parameter Mf see PARAMETERS of the Controller Thus the following parameters will be defined frequency f measured by the HFC input voltage measured by analog input AIO voltage U measured by analog input AI Xu U1 Y U2 U
8. ires must be isolated and of minimal cross section of 0 35 to 0 75 mm The following figure explains the proper way of connecting eos olan INPUTS VPC844 OUTPUTS ncn Ral Rel Ro Rojotefotfozfoze 82320 11
9. length rev reverse smoke rises with decreasing of the control impulse length 7 RS232C data protocol VPC844 controller constantly sends out on the RS232 interface port data for the main variables of the fire detector test tunnel Data is sent 9600 bps 8 bits 1 stop bit no parity check Each 100 ms a packet of 4 bytes is sent out where the fourth byte always is the checksum XOR of the previous three in order to guarantee the data integrity packet lt Bytel Byte2 Byte3 Byte4 gt Byte4 Bytel Byte2 Byte3 There are 12 different data packets with number of each data packet Byte3 127 After the 12 packets the controller sends out two control packets with Byte3 117 so the total of 14 packets is sent in cyclic order lt m 1000 mod 256 m 1000 div 256 128 Control Byte gt lt Cy 1000 mod 256 y 1000 div 256 129 Control Byte gt lt SP 1000 mod 256 SP 1000 div 256 130 Control Byte gt lt t 10 150 mod 256 t 10 150 div 256 131 Control Byte gt lt f mod 256 f div 256 132 Control Byte gt lt F mod 256 F div 256 133 Control Byte gt lt AI0 1000 mod 256 CAI0 1000 div 256 134 Control Byte gt lt AI1 1000 mod 256 AI1 1000 div 256 135 Control Byte gt lt U1 1000 mod 256 U1 1000 div 256 136 Control Byte gt lt U2 1000 mod 256 U2 1000 div 256 137 Control Byte gt lt x x x dyn prg pid ramp wait X 138 Control Byte gt lt in8 in7 in6 ins in4 in3 in2 inl X
10. r minute 00 0 99 9 cycle time for PWM in seconds Hw 0 00 1 25 0 The control of output smoke is defined by parameter HW If it is 00 0 then the way of control will be PWM with period TC When Hw gt 0 then the way of control is FM with impulse of ON length HW and period according to the output value of the control unit In this case the minimal period maximal smoke thickness will be HQ and maximal period hysteresis ofsmoke willbe HS Hw Hq Hs d Al width of the ON state of the impulse in seconds when FM 00 0 99 9 minimal period for FM Hw gt Q 00 0 99 9 maximal period for FM Hw gt 0 00 0 99 9 distance between the sender and the receiver of the optical system 0 00 2 50 alarm band if controlled variable deviates more than Al from the set value the yellow diode willlightup 0 999 V1 programmable reference voltage subtracted from the signal before ADC reading onanaloginput AIO 0 000 5 000 Dv ADC linear correction value inthousandths 0 250 default 100 V2 programmable reference voltage subtracted from the signal before ADC reading onanaloginput AI1 0 000 5 000 TO time to wait in seconds before airing after the NO th response on digital inputs 00 0 99 9 fc frequency correction of the quartz resonator 0 5000 default 4320 the resonator frequency mustbe 18 000 000 100xfc HZ Mp _ direction of control nor normal smokerises with increasing of the control impulse
11. the captured readings of m and y more than one detector responded second 2m 0 174 and first in this case and the last two im 0 181 k captured readings of mand y are displayed This screen indicates the values of m and y on each response from the inputs i e each time a tested detector in the tunnel has responded The number of the responded line will be indicated as a first digit on the display line The controller will jump to this screen on each response if it is in Monitoring mode The captured readings are displayed in successive order but only the last two at most will be viewed on the screen After the No th response the controller will wait To seconds then stop the control routine and set the airing output to take the smoke out of the tunnel 6 Parameters of the controller and their range Sy My Sm Mm dy Mf dm MD Pu Pd Ul Nd U2 No set value or ramp endpoint of y 0 000 5 000 type of control ony off the control is not on y variable Sta static control ony set value will be Sy dyn ramping ony from the current value to Sy for dy per minute set value or ramp endpoint of m 0 000 5 000 type of control on m off thecontrol is not on m variable Sta static control on m set value will be Sm dyn ramping on m from the current value to Sm for dm per minute acceleration rate per minute for ramping ony 0 000 5 000 defines which pair of control inputs will be
12. unnel and displays the data over four different screens On initial startup the first screen is viewed Navigation to the other three and vice versa is performed by using the corresponding arrow buttons 5 1 Screen 1 Preliminary readings in clear environment to get reference levels F 42134 Uu 0 487 u 4 134 Uu 0 487 F 44100 U 0 480 U 4 100 U 0 480 when HFC and ATI are selected when AIO and ATI are selected parameter Mf on parameter Mf off This is the first screen of the controller on powerup First line will indicate the current values of the selected pair of control inputs counting HFC f in Hz or voltage input AIO in Volts and the second voltage input AIl in Volts The second line will show the corresponding reference levels for the inputs parameters U1 U2 and F This screen can be used by the user to select new reference levels Pressing the Rdy button will copy the current measured values of the inputs to the reference levels U1 U2 or F U2 These parameters can be modified further in PARAMETERS mode ifneeded This screen will be view when the controller is reset by pressing the Res button 5 2 Screen 2 Current readings of m y and Xf Xu m 0 034 y 0 987 m 0 034 y 0 987 Xf 1 009 m y 0 42 Xu 1 043 m y 0 48 when HFC and ATI are selected when AIO and ATI are selected parameter Mf on parameter Mf off This screen serves to display the current values of the variables m y
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