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Appendix 3

Modbus Register Specification for COMBI 16 cCAN system

Function code 03 used througout to access these 16 bit unsigned registers
Baud rate 4800,9600,19200

No parity

2 stop bits
2 channel known as Duty and standby

(RS485)

Register

definition

Data

Units

0

watchdog counting

integer

none

int 250 usec counter

4-20 chan

1 to 16

integer

Gas value * 10

as per 17 to 32

4-20 chan

17 to 32

gas 1-16 units

see gas number table

units

will have zero for unused

4-20 chan

33

low alarm bits

1-16 channel

1=alarm (bit 0 is chan 1 etc)

4-20 chan

34

high alarm bits

1-16 channel

1=alarm (bit 0 is chan 1 etc)

4-20 chan

35

overange alarm bits

1-16 channel

1=alarm (bit 0 is chan 1 etc)

4-20 chan

36

Sensor fail

1-16 channel

1=alarm (bit 0 is chan 1 etc)

Can Chan

40 to 104

integer

Gas value * 10

as per 105 to 168

Can Chan

105 to 168

gas 1-64 units

see gas number table

units will have zero for unused

Can Chan

169

low alarm bits

1-16 channel

1=alarm (bit 0 is chan 1 etc)

Can Chan

170

low alarm bits

17-32 channel

1=alarm (bit 0 is chan 17 etc)

Can Chan

171

low alarm bits

33-48 channel

1=alarm (bit 0 is chan 33 etc)

Can Chan

172

low alarm bits

49-64 channel

1=alarm (bit 0 is chan 49 etc)

Can Chan

173

high alarm bits

1-16 channel

1=alarm (bit 0 is chan 1 etc)

Can Chan

174

high alarm bits

17-32 channel

1=alarm (bit 0 is chan 17 etc)

Can Chan

175

high alarm bits

33-48 channel

1=alarm (bit 0 is chan 33 etc)

Can Chan

176

high alarm bits

49-64 channel

1=alarm (bit 0 is chan 49 etc)

Can Chan

177

over range alarm bits

1-16 channel

1=alarm (bit 0 is chan 1 etc)

Can Chan

178

over range alarm bits

17-32 channel

1=alarm (bit 0 is chan 17 etc)

Can Chan

179

over range alarm bits

33-48 channel

1=alarm (bit 0 is chan 33 etc)

Can Chan

180

over range alarm bits

49-64 channel

1=alarm (bit 0 is chan 49 etc)

Can Chan

181

Sensor fail

1-16 channel

1=alarm (bit 0 is chan 1 etc)

Can Chan

182

Sensor fail

17-32 channel

1=alarm (bit 0 is chan 17 etc)

Can Chan

183

Sensor fail

33-48 channel

1=alarm (bit 0 is chan 33 etc)

Can Chan

184

Sensor fail

49-64 channel

1=alarm (bit 0 is chan 49 etc)

item

222

system status

bit 0 = global sensor fail
bit 1 = spare
bit 2 = system fault
bit 3 = battery power lost
bit 4 = main power lost
bit 5 =
bit 6 =
bit 7 =
bit 8 = modbus comms fail
bit 9 = l
bit 10 = CAN bus fail
bit 11 = spare
bit 12 = spare
bit 13 = spare
bit 14 = spare
bit 15 = spare

Can Addresses

1 to 64

Can Sensors

65 to 128

Reserved for more

129 to 200

Spare

201 to 209

Panels (default=201)

210 to 255

Spare

Appendix 4

Event numbers are as follows:

chanfail

0-15

chanhialarm

16-31

chanloalarm

32-47

chanoralarm

48-53

Canchanfail

54-69

Canchanhialarm

68-83

Canchanloalarm

84-99

Canchanoralarm

100-115

main_power_alarm 117
can_bus_alarm 118
battery_alarm 119
clear_event_log 120
panelreset

121

37

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Содержание Combi

Страница 1: ...Combi OPERATING HANDBOOK TECHNOLOGIES LTD C925 Manual No 194D1C Issue P v2 www gds technologies co uk Tel 44 0 113 286 0166 Fax 44 0 113 287 8178 Email sales gds technologies co uk ...

Страница 2: ...n 19 Setting the Time to Alarm 19 Setting Alarm Levels 19 Setting number of Decimal Places 19 Setting the 4 20mA Deadband 19 Alarm Relay off timers 20 Voting Relays 20 Time Weighted Alarms 20 Defaulting Sections of the Panel 21 Default the Whole Panel from Power Up 21 Repeater on CAN2 only 21 Installation 22 Siting the Sensors Sensor Cable Routing 24 Equipment Installation Guides 25 Service Routin...

Страница 3: ...ding a text description of the location of a sensor are programmable via user and engineer s menus and retained when power is off These parameters are reloaded at the next power up so that the system will perform as it did previously The Combi panel also has two RS485 Modbus channels and can send data when requested to do so to a Modbus master controller thus allowing independent system management...

Страница 4: ... four relays labeled OPT5 6 7 and 8 can also be used for time weighted average alarms covering the requirements of 15 minute and 8 hour measurements Additionally all 8 onboard relays and the first 16 of the external relays have a programmable delay to de energise parameter which for example allows for fan evacuation of a space containing detected gas These relays and the first 16 relays on the rem...

Страница 5: ... levels which are user selectable High Low and Over range Combi Panel Outputs RS232 data log up to 10 meter CAN bus up to 1Km Modbus slave to an external Modbus Master up to1Km 9600 baud Optional Relay card up to an additional 64 relays Common Low alarm relay DPCO or Group 1 Common High alarm relay DPCO or Group 2 Common Over Range alarm relay SPCO or Group 3 Fault relay SPCO or Group 4 OPT G5 LTE...

Страница 6: ...tton 4 will stop the cycle on the current sensor for 999 seconds If a new alarm occurs the display will show this sensor The type of gas and the text associated with this sensor is displayed The third line displays the number of alarms and faults present in the Combi system Normally these are zero Additionally the number of 4 20 and Addressable sensors in the system are displayed The fourth line d...

Страница 7: ...ailed CAN fail I Amber on if any addressable sensor has stopped communicating Modbus fail I Amber on if the Modbus master has stopped communicating System Inhibit I Amber on if the system is not checking alarms Sensor Inhibit X Amber on if any sensor has been inhibited Watchdog I Amber on if the processor has had a watchdog reset Power I Green on if power applied Fault X on if a fault exists Alarm...

Страница 8: ...99 seconds When in engineer s mode it is used to increment parameters which are being modified Button 5 is the DOWN button Used when decrementing items in the engineer s menu Button 6 is the DIM button It is used for dimming the LED s and LCD backlight and will toggle between full brightness and the dim level previously set in the engineer s menu DIM can be used at any time except when doing an LE...

Страница 9: ...ressed 4 times or as per customer requirement Changing the engineers password is described later The user password cannot be changed Combi System Menu Index See Appendix 1 for further details Note User menu only contains items shown in red Engineer s menu contains all items 1 View Modbus Reg 2 Set Clock 3 Inhibit all Sensors 4 View Modbus txrx 5 Refresh Rate 6 Edit Company Text 7 Lamp Test 8 Relay...

Страница 10: ...er the Addressable channel text selection Again the buttons are used in exactly the same way to change the text description for networked Addressable sensors SELECT 3 when pressed will exit the manual mode and save the text changes in non volatile memory on the main PCB and return to the ENGINEER S menu See also DATA to and from a PC using Hyper terminal which allows a much quicker method of editi...

Страница 11: ...ibited The 4 and 2 buttons are used to turn the inhibit ON and OFF respectively Pressing SELECT 3 moves the selection to the CAN networked sensors and the buttons are used in the same way Pressing SELECT 3 again returns to the ENGINEER S menu Changing the direct gas type 18 Each of the sixteen 4 20mA inputs can have a different gas type which can be changed using ENGINEER S menu 18 When selected b...

Страница 12: ...UgM3 31 Microgram per metre cubed oil mist B2H6 32 Diborane 0 1ppm SiH4 33 Silane 0 5ppm Ph3b 34 Phosphene 0 1ppm F2 35 Flourine 0 5ppm NF3 36 Nitrogen Triflouride 0 50ppm LEL M 37 LEL per metre 0 5 SW Input 38 Switch input 0 100 Displays as SW input when not in Alarm and SW Active when in Alarm Note use channel text to describe this switches function refrig 39 0 1000ppm refrigerant e g R22 benzin...

Страница 13: ...acceptable level of illumination in subdued control room conditions The DIM 6 button on the main panel when pressed will toggle the brightness between maximum and dimmed for both The level to which dimming occurs can be set via the User Menu number 11 This shows the current brightness setting and then using the UP 1 and DOWN 5 buttons a new dim level can be set and this is shown on the LCD and on ...

Страница 14: ...ate on an event as an individual relay 1 to 64 Alternatively the first 16 relays can be programmed to use patterns See ENGINEER S menu 23 Event to Relay Modbus set up and indicators Modbus is a means of obtaining data from the gas detection system via a MODBUS master controller The Combi system is a SLAVE to the commands received from the master via two RS485 twisted pair communication cables When...

Страница 15: ...D data to it and accept button presses from the repeater thus allowing remote operation of the combi panel Pressing SELECT 3 again returns to the ENGINEER S menu Modbus baud rate Using ENGINEER S menu 34 the baud rate used by Modbus can be changed Pressing UP 1 and DOWN 5 will alter the baud rate Pressing SELECT 3 returns you to the ENGINEER S menu The Modbus protocol for the data packets received...

Страница 16: ...ed in the event log Event log 9 The events listed in appendix 1 are logged internally in the COMBI system A total of 99 events can be stored and viewed later either on the LCD or on a PC using Hyper terminal When this 99 event memory is full the oldest event is replaced by the new event so this history of events always represents the last 99 incidents Using ENGINEER S menu number 9 this event memo...

Страница 17: ...for Windows XP START PROGRAMS ACCESSORIES COMMUNICATIONS HYPERTERMINAL and set the hyper terminal to the active COM port at 8 data bits no parity 1 stop bit no handshake then select Transfer and Capture text a filename is suggested to save the data to You can change this filename as required and do take note of which directory it is going to be stored in then press the start button and the PC is n...

Страница 18: ...it can now be sent back to the panel using ENGINEER S menu 29 PC to panel Again Hyper terminal is used but this time the Transfer Send text file option is used When prompted choose your modified text file as the one to send and then the text should start to flow The output seen on the Hyper terminal screen consists of the command letters received so strings of T or H etc are seen which lets you kn...

Страница 19: ...ust the zero on the LCD Pressing SELECT 3 moves to the next step which is Apply span gas and use the UP 1 and DOWN 5 buttons to change the gain until the reading is correct on the LCD for the applied gas The gas values used in this case are the peak values from the sensors and this gives the ability to apply gas to a number of sensors before returning to the Combi panel to adjust thus allowing one...

Страница 20: ...nu 15 for addressable alarm levels Menu 15 for addressable sensors Use UP 1 and DOWN 5 to choose a sensor which requires an alarm change Use 4 and 2 to adjust the low alarm point Pressing SELECT 3 will then request you to set the High alarm point Pressing SELECT 3 again allows the Over Range alarm to be set Use the RESET button 7 to select RISING and FALLING alarm Pressing SELECT 3 again will exit...

Страница 21: ...0 channels are displayed UP 1 and DOWN 5 buttons will display which groups this channel is in whilst the 4 and 2 buttons change the channel being viewed If a channel was in groups 1 and 3 then the display would be 1 3 If it was in groups 2 3 and 7 then the display would be 23 7 Pressing UP 1 or DOWN 5 changes this selection so keep pressing until the correct grouping for your application appears A...

Страница 22: ...kewise button pushes on the repeater are transmitted to the main panel and are used by the main panel as if they had been pressed locally To ensure the correct operation of the repeater it has to be set up in order to accept CAN from a main panel and also to know where to send its own CAN data It is a requirement that the CAN2 bus is used for repeaters leaving CAN1 for sensors and other devices Se...

Страница 23: ...tion of the room will of course alter the situation significantly but it should be remembered that if the ventilator is not at ceiling level a dangerous concentration can still occur between the top of the ventilator and the ceiling For heavier than air gases such as propane or butane the formation of dangerous layer occurs at ground level These gases tend to behave like water and will run down gr...

Страница 24: ... cable movement the mains cable within the enclosure should be restrained using a clamp Earth leads within the enclosure should be a minimum of 300mm longer than the mains Live and Neutral cores Field cables which are terminated within the control unit enclosure should be kept as short as possible and not allowed to cross over electronic components or the ribbon cable See Figures 2 3 and 5 for con...

Страница 25: ...k must be positioned on the very last sensor on each sensor cable run from the Combi Direct Sensors Sixteen direct sensor inputs each with three terminals are available for terminating the two or three wire sensors 4 20mA devices to the Combi The sensors connected to these direct inputs must operate in source mode only Combi panel will not work with sensors operating in sink mode Repeaters Repeate...

Страница 26: ...tes DO use the correct size and type of cable for the application screened cable for instrumentation DO keep signal cables away from power cables DO ensure that loop resistance values are not excessive DO ensure that the cable is of suitable quality for its intended environment DO avoid major sources of electrical interference when planning cable runs away from motors etc DON T exceed maximum cabl...

Страница 27: ...equipment manufacturers DO ensure continuity through junction boxes equipment housings Lightning DO keep instrument cables away from susceptible power and earth cables DO fit surge protectors in areas subject to severe electric storms Equipment DON T power up until commissioning DO check area classification for equipment suitability DO ensure correct IP rating for the environment DO check power re...

Страница 28: ...nation at either end DO record the cable loop resistance values to aid troubleshooting later Documentation DO record cable routing and equipment junction box locations DO track all changes by updating the system documentation DO keep records adjacent to the equipment 27 ...

Страница 29: ... to and that all other indicators are normal TWICE YEARLY MAINTENANCE SCHEDULE 1 All zeros at the control unit to be checked logged and aligned 2 Each detector to be gas tested and reading logged sensitivity checked 3 Field indicators to be tested 4 All alarm set points checked and re aligned 5 Lamp Test 6 All faulty parts replaced where required 7 All filter elements checked and replaced as neces...

Страница 30: ...enu 6 Edit Company Text The fourth line of the LED display alternates between time and company text This text can be edited to show the site or installer details 7 Lamp Test This menu will illuminate all front panel LED s on the main PCB and those on the remote LED board when connected When complete the PCB buzzer will sound and the menu exits Note that the LED test is done with DIM active to save...

Страница 31: ...dicates whether inhibited or not and the UP 1 and DOWN 5 buttons change the channel Note that only channels with active sensors can be inhibited Pressing SELECT 3 or timeout will move to the second part of this menu which allows addressable CAN sensors to be inhibited in the same way Pressing SELECT 3 will exit this menu 15 Addressable Alarm Levels The alarm levels for can sensors can be changed i...

Страница 32: ...CT 3 to start adjusting the zero for this sensor with no gas present UP 1 and DOWN 5 make minor adjustments and when reading of zero is achieved press SELECT 3 to move to a span adjustment apply span gas UP 1 and DOWN 5 will adjust the internal gain to make the reading correct according to the span gas applied Press SELECT 3 to exit this menu 21 Set 4 20 direct Alarm Levels Alarms occur when the g...

Страница 33: ...elay PCB for smaller installations Pressing SELECT 3 will exit this menu 24 Relay off Timers Each of the 8 relays on the main PCB can have delayed de energise times and this menu allows you to set the delay in seconds Use UP 1 and DOWN 5 to select which of the 8 relays to set and then 4 and 2 to alter the time The minimum time is 1 second and the maximum is 255 seconds This feature is extended to ...

Страница 34: ...ged to a new value using the 4 and 2 button but only if an address link has been inserted This link should be removed afterwards Note If more than 1 device has a link inserted then all these will have their address change to the new one and will give rise to a duplicate error which must be resolved It may be required to use menu 16 which clears all unused sensor addresses from the panel such as af...

Страница 35: ...s menu allows you to change the Baud rate used by the Modbus default is 9600 The options are 19200 9600 4800 bits per second and these are altered using the UP 1 and DOWN 5 buttons Pressing SELECT 3 will exit from this menu 35 Set Power Alarms The panel detects both mains power and battery DC power When only one power source is in use it is convenient to disable the loss detection of the other sou...

Страница 36: ...6 6 6 6 6 6 6 6 6 6 6 6 second alrm 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 third alrm 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 35 Start of text file Any text can be put here up to 40 characters x16 the period of time that the sensor must detect the gas before it activates the control unit alarm x64 the period of time that the sensor must detect the gas before it activates the control unit alarm x16 Alarm direction ...

Страница 37: ...elays for 16 remote relay patterns d 1 2 d 2 2 d 3 2 d 4 2 d 5 2 d 6 2 d 7 2 d 8 2 d 9 2 d10 2 d11 2 d12 2 d13 2 d14 2 d15 2 d16 2 Delay for 8 local relays D 1 1 D 2 1 D 3 1 D 4 1 D 5 1 D 6 1 D 7 1 D 8 1 X 36 See above but for addressable sensors 33 48 See above but for addressable sensors 49 64 Defines the local relay number driven when these events occur Default state of mainboard relays 0 De en...

Страница 38: ...high alarm bits 17 32 channel 1 alarm bit 0 is chan 17 etc Can Chan 175 high alarm bits 33 48 channel 1 alarm bit 0 is chan 33 etc Can Chan 176 high alarm bits 49 64 channel 1 alarm bit 0 is chan 49 etc Can Chan 177 over range alarm bits 1 16 channel 1 alarm bit 0 is chan 1 etc Can Chan 178 over range alarm bits 17 32 channel 1 alarm bit 0 is chan 17 etc Can Chan 179 over range alarm bits 33 48 ch...

Страница 39: ...nsor output When programming the sensor processor the Run and Prog slide switch SW2 is set to Prog but under normal circumstances this switch should be in the Run position The Reset push button SW1 when pressed gives a hardware reset to the sensor processor This can be pressed at any time and the sensor reacts in the same way as if it had reset itself Sensor connector Reset 0V Unused RX TX 5V 9 wa...

Страница 40: ... Power Pack 11A 24vDC required for use with 21 or more sensors 200 003 G 20JF1 Flam Toxic Gas Sensor SAFE AREA Display H 40JF6 Flam Toxic Gas Sensor SAFE AREA I XDIF1 Flam Toxic Gas Sensor HAZARDOUS AREA J XDIWIN F1 Flam Toxic Gas Sensor HAZARDOUS AREA Ref Description Part No K 20JF1 Flam Toxic Gas Sensor SAFE AREA L 40JF1 Flam Toxic Gas Sensor SAFE AREA M 40JP1 Toxic Gas Sensor SAFE AREA N 9000JF...

Страница 41: ...4 core Combi Network Controller Scans controls up to x16 combi panels CAN 2 Sensor line Sensors CAN 1 Sensors CAN 1 Sensors CAN 1 Sensors CAN 1 Sensors CAN 1 Sensors CAN 1 Sensors CAN 1 1 16 direct 1 64 Addressable CAN 2 CAN relay unit 4 relays Relay unit 2 x 32 relays CAN 2 ...

Страница 42: ...41 Fig 4 Circuit Board details Front Panel PCB Power supply and Input Outputs ...

Страница 43: ...onfiguration for TOX Board 24 Hi Lo 0v 4 20mA 4 20 IN SO SK 24 Hi Lo 0v Control Unit 4 20mA Input Sensor 3 Wire Direct 4 20mA Signal 24 Hi Lo 0v 4 20mA 24 Sig 0v Control Unit 4 20mA Input Sensor 2 Wire Direct 4 20mA Signal 24 Hi Lo 0v 4 20mA 24 Sig 0v 4 20 IN SO SK 4 20 IN SO SK 314mm 263mm 264mm 237mm 95mm b b b b b b b b b b b b b b ...

Страница 44: ...ws that this sensor has its alarms inhibited under the O H L the v represent the direction of the alarms L is falling and H and O are rising A under the letter represents a detected state so in this example the sensor would be in high alarm and a fault present 35 6 represents the value of the gas present at the sensor head Pressing R on the PC causes a reset to occur Gas type with address and seri...

Страница 45: ...t appears on the LCD the left magnet then puts the sensor into inhibit whilst the right magnet removes it The amber LED on the front panel under the LCD flashes when the sensor is inhibited When all magnets are removed the display will revert to normal operation The direction of the alarms is displayed as for rising and v for falling but these can be changed using left and right magnets together T...

Страница 46: ...hing 7 Connect RS232 pod to J3 connector and to a PC running HyperTerminal at 4800 baud 8 The terminal output screen shows continuous data output and allows input from the PC keyboard Pressing C enters calibration mode a Press SHIFT to initialise the sensor and reset to default Flam 100 LEL setting b Then press G to change the gas type to match the cell being used NOTE the range of the new gas has...

Страница 47: ...the right magnet removes it An amber LED on the front panel under the LCD flashes when the sensor is inhibited When all magnets are removed the display will revert to normal operation The left and right magnets together allow the calibration menu to be used Removing both magnets as instructed on the LCD presents the first part of this multi menu which is ZERO With no gas present use the left magne...

Страница 48: ...e recognised by the Combi system automatically on power up This can be checked in engineers menu 27 Setup Network The CAN relay must also be set up to copy a group of 4 relays on one of two 32 way external relay boards If a 32 way external relay unit is not being used the Combi system sees the 4 relays in the CAN relay as part of a virtual 32 way external board SW2 is used to select which group of...

Страница 49: ... Combi Processor Reset RS232 PC Connection Address Select Described below Fault LED activates if there is no communication to the panel MPU LED Pulses at 1Hz to show processor is still operating CAN LED Pulses when data is being transmitted to Control unit Redundant Switch option to be introduced in the future Test Pins to measure current output Note Load must be connected Address 230 Direct senso...

Страница 50: ...select a vacant user gas number 61 68 as the addressable sensor will overwrite data entered at the Combi panel d The range of the gas signal selected will have a default setting which can be changed by pressing R e Press A and enter CAN address of this sensor f Press N to toggle the number of decimal places between 1 and 2 i e dp 1 or dp 2 g Press B to toggle the deadband ON and OFF h Press F to t...

Страница 51: ...Main Controller Serial No Relay programmed or used Sensor No Add Direct I P Gas Type Location Common CAN Relay 32 Way Group 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 ...

Страница 52: ...ISO 9001 TECHNOLOGIES LTD GDS Technologies Ltd Fusion Point Ash Lane Garforth Leeds LS25 2GA Tel 44 0 113 286 0166 Fax 44 0 113 287 8178 sales gds technologies co uk www gds technologies co uk ...

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