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GASMAX II + GDS-IR Operation & Maintenance Manual, Revision 1.1

Page 39

ALARM STATUS WORD BIT DEFINITION

Alarm Status Word

Bit 0

Ch 1 Alarm 1 (1), no alarm (0)

Bit 1

Ch 1 Alarm 2 (1), no alarm (0)

Bit 2

Ch 1 Fault (1), no fault (0)

Bit 3

Reserved

Bit 4

Ch 2 Alarm 1 (1), no alarm (0)

Bit 5

Ch 2 Alarm 2 (1), no alarm (0)

Bit 6

Ch 2 Fault (1), no fault (0)

Bit 7

Reserved

Bit 8

Relay 1 Energized (1), no relay (0)

Bit 9

Relay 2 Energized (1), no relay (0)

Bit 10

Relay 3 Energized (1), no relay (0)

Bit 11-15

Reserved

TRANSMITTER STATUS WORD BIT DEFINITION

Transmitter Status Word

Bit 0

Ch 1 Active (1), Ch 1 inactive (0)

Bit 1

Ch 2 Active (1), Ch 2 inactive (0)

Bit 2

Secure Level (1), no security (0)

Bit 3

Marker Tx LED (1), no marker (0)

Bit 4-11

Reserved

Bit 12

Relay 1 Failsafe (1), normal (0)

Bit 13

Relay 2 Failsafe (1), normal (0)

Bit 14

Relay 2 Acknowledge (1), normal (0)

Bit 15

Lock (1), not locked (0)

CHANNEL FLOATING POINT DEFINITION

Содержание GASMAX II + GDS-IR

Страница 1: ...5 Butler Road League City TX 77573 409 927 2980 409 927 4180 Fax ww gdscorp com Operation and Maintenance Manual GASMAX II GDS IR GASMAX Gas Detector with GDS IR Infrared Sensor for Combustibles and Carbon Dioxide ...

Страница 2: ...BEFORE OPERATING OR SERVICING ATTENTION POUR DES RAISONS DE SÉCURITÉ CET ÉQUIPEMENT DOIT ÊTRE UTILISÉ ENTRETENU ET RÉPARÉ UNIQUEMENT PAR UN PERSONNEL QUALIFIÉ ÉTUDIER LE MANUE D INSTRUCTIONS EN ENTIER AVANT D UTILISER D ENTRETENIR OU DE RÉPARER L ÉQUIPEMENT REVISION HISTORY Revision 1 0 7 24 16 Initial Release Revision 1 1 6 29 18 Updated wiring diagrams Copyright 2016 GDS Corp All Rights Reserved...

Страница 3: ... CALIBRATION ______________________________________________________ 20 6 MAINTENANCE_____________________________________________________ 23 7 USER MENUS ______________________________________________________ 24 8 TROUBLESHOOTING ________________________________________________ 34 9 MODBUS INTERFACE ________________________________________________ 36 10 SPECIFICATIONS _____________________________...

Страница 4: ...T 20 FIGURE 5 2 LOCAL GDS IR CALIBRATION SETUP 21 FIGURE 5 3 REMOTE GDS IR CALIBRATION SETUP 21 FIGURE 6 1 GDS IR DISASSEMBLY CLEANING 23 FIGURE 7 1 MAIN MENU FLOWCHART 24 FIGURE 7 2 SYSTEM CONFIG MENU 25 FIGURE 7 3 SENSOR LIFE TRANSMISSION FORMAT 26 FIGURE 7 4 ALARM SETTINGS MENU 27 FIGURE 7 5 RS 485 MODBUS MENU 28 FIGURE 7 6 SENSOR SETTINGS MENU 28 FIGURE 7 7 CLOCK DELAY MENU 29 FIGURE 7 8 CONTR...

Страница 5: ...URE 12 6 GDS IR RAIN SHIELD P N 20 0236 HORIZONTAL MOUNT 48 FIGURE 12 7 GDS IR RAIN GUARD P N 3000 9005 VERTICAL MOUNT KOOZIE 48 FIGURE 12 8 WIRING DIAGRAM LOCAL GDS IR SENSOR 49 FIGURE 12 9 WIRING DIAGRAM REMOTE GDS IR SENSOR 3 WIRE INTERFACE 50 FIGURE 12 10 WIRING DIAGRAM REMOTE GDS IR SENSOR 4 WIRE INTERFACE 51 FIGURE 12 11 WIRING DIAGRAM LOCAL GDS IR USING P N 20 0235 INTERFACE PCB 52 FIGURE 1...

Страница 6: ...s monitor is designed and constructed to measure the level of certain gases in ambient air Accuracy in atmospheres containing steam or inert gases cannot be guaranteed The GDS IR may be mounted vertically or horizontally Do not mount the GDS IR upside down Do not paint transmitter or sensor assembly Do not operate the GASMAX II GDS IR if its enclosure is damaged or cracked or has missing component...

Страница 7: ... enhanced diagnostics not found in previous generation products On board non volatile memory retains all configuration data during power interruptions Two independent 4 20 mA outputs allow for easy connection to control systems or other alarm instrumentation Additional output options include alarm relays and single channel MODBUS slave interface Built in user prompted calibration makes it easy for...

Страница 8: ...y Key Features Certified for use in Class I Division 1 Groups B C D hazardous areas CSA performance certified C22 2 No 152 Approved for use in SIL 2 safety systems Standard 4 to 20 mA output current source Requires no routine span calibration Continuous self test automatically indicates a fault Multi layered filtering system protects optics from dirt and water ingress Straight optical path elimina...

Страница 9: ...ed flush against a wall GDS Corp recommends that the GDS IR sensor be located in such a way as to allow air to flow past the sensor from any direction In addition space around the GDS IR will allow a Rain Guard p n 3000 9005 to be installed if necessary The type of gas to be detected will determine the recommended height above ground To detect heavy gases such as propane or ethylene mount the sens...

Страница 10: ...vailable between the GASMAX display and the GDS IR then the combination will work but the GDS IR hardware zero will have to be done locally at the GDS IR junction box See the chapter on Drawings and Dimensions for details of the remote wiring options HAZARDOUS AREA INSTALLATION GASMAX II monitors and GDS IR Infrared Sensors are certified for use in Class 1 Division 1 hazardous areas Installation i...

Страница 11: ...Ground connects to TB2 4 Channel One 4 20mA output is available on TB2 2 and Channel Two 4 20mA output is available on TB2 3 GDS Corp always recommends using shielded wire for signal and power cable Figure 3 1 GASMAX II GDS IR Power Signal Wiring ibbon to isplay IO Power upply Bridge ensor E COM C PW O O G B B TB2 1 12 30VDC Input TB2 2 Channel 1 4 20mA Out TB2 3 Channel 2 4 20mA Out TB2 4 Power S...

Страница 12: ...activates if either Channel 1 or Channel 2 exceed the programmed alarm 1 threshold and cannot be acknowledged Relay K2 activates if either Channel 1 or Channel 2 exceed the programmed alarm 2 threshold and can be acknowledged reset from the front panel or via TB3 Relay K3 indicates sensor failure and is always failsafe normally open held closed Remote Alarm Reset TB3 can be used to acknowledge an ...

Страница 13: ...ts of wiring terminals for MO B and B signals daisy chain power wiring requires that two wires be installed in the and G terminals on the G M I O Power Supply board This can be difficult if wire sizes are larger than 18ga Further the addition of multiple MODBUS and power wires inside the GASMAX enclosure can create problems and possibly damage components if the display has to be forced into place ...

Страница 14: ...Junction Box The MODBUS wiring junction box is attached to the GASMAX either on the bottom fitting or one of the side fittings depending on installation requirements Specify BOTTOM LSIDE or RSIDE when ordering See Fig 4 8 Figure 3 5 MODBUS Junction Box Installation Options G B G B PW to G M MO B to G M ibbon to isplay IO Power upply 33 PW I COM PW O O G B B I G B G B MO B I MO B I MO B O MO B O ...

Страница 15: ...h 4 20mA output shares the same common ground and are therefore not isolated from each other This board is connected piggyback to the back of the GASMAX II Display Assembly GASMAX II units may be field upgraded with this option at any time NOTE THE ISOLATED 4 20MA AND MODBUS RELAY BOARDS SHARE THE SAME CONNECTOR AND THEREFORE CANNOT BE INSTALLED AT THE SAME TIME Figure 3 6 Optional Isolated 4 20mA...

Страница 16: ... II arranged in a quadrant around the LCD display these are labeled NEXT EDIT DOWN CAL and UP To activate or press a magnetic switch swipe the magnetic wand near the switch For the balance of this manual the term press will be used to describe activation of any key via the magnetic wand Figure 4 1 Gasmax Single Channel Display Pressing the NEXT key causes the GASMAX display to switch display scree...

Страница 17: ...calibration is critically important to the continued safe operation of any gas detection system See Chapter 6 for more information on calibration Figure 4 4 Accessing Cal Mode NOTE TAKE CARE WHEN APPLYING CALIBRATION GAS TO THE GASMAX WHILE NOT IN CALIBRATION MODE THIS WILL CAUSE AN INCREASE IN THE 4 20MA OUTPUT SIGNAL AND MAY RESULT IN UNINTENDED AND UNEXPECTED ALARM CONDITIONS MORE INFORMATION O...

Страница 18: ...TS value is shown at the top and Alarm 1 and Alarm 2 levels are shown as dotted A1 and dashed A2 lines PROGRAMMING ALARM SETTINGS GASMAX II gas monitors have front panel LED indicators for ALARM 1 ALARM 2 and ALARM 3 FAULT as well as optional alarm relays Alarm processing will trigger an alarm condition when the input exceeds the programmed value and includes hysteresis to keep the alarm from rapi...

Страница 19: ...ALARM 3 USE AS 3rd ALARM ALARM 3 is typically used to indicate FAULT conditions that suggest sensor failure or out of measurement range conditions However some applications require a third level alarm he LARM 3 menu is identical to ALARM 1 and ALARM 2 and may be set to trip at any level NOTE ALARM 3 WILL ALSO TRIP WITH MISSING OR FAILED SENSORS REGARDLESS OF THE PROGRAMMED LEVEL VALUE FINAL TRANSM...

Страница 20: ...SMAX II calibration guidelines Calibration accuracy is only as good as the calibration gas accuracy GDS Corp calibration gases are traceable to NIST National Institute of Standards and Technology Never use calibration gas that has passed its expiration date Check the SPAN GAS VALUE setting and make sure it matches the calibration gas See Fig 6 2 Always use a GDS Corp calibration cup that completel...

Страница 21: ...rd combustible gases 4 A magnetic wand CALIBRATION SETUP The GDS IR infrared sensor has a barbed push on cal gas inlet fitting on the bottom of the sensor Attach the fixed flow regulator and flexible tubing as shown below Calibration may be performed on the GDS IR sensor in either the vertical or horizontal configuration Figure 5 2 Local GDS IR Calibration Setup Figure 5 3 Remote GDS IR Calibratio...

Страница 22: ... 1 For dual channel units press the NEXT key on the GASMAX until that the DATA Display screen for the GDS IR channel is shown 2 Enter CAL MODE by pressing the DOWN CAL key and within 5 seconds press the EDIT key The screen will display an APPLY ZERO message With zero air still flowing to the GDS IR press the EDIT key to complete the ZERO calibration 3 If the zero calibration value is within limits...

Страница 23: ...low The cover unscrews counterclockwise when viewed from below Inspect the hydrophobic filter for any buildup of dirt or dust If the filter requires cleaning carefully unscrew the setscrew and slide the filter down and away from the GDS IR Clean the filter using compressed air Reinstall the filter setscrew and sensor cover If the sensor indicates a fault condition remove the sensor cover and filte...

Страница 24: ...N MENU GASMAX II setup variables are stored in non volatile memory and can be modified by the end user to better match a particular application The GASMAX II Main Menu tree is shown below To access the Main Menu swipe the magnetic wand over the EDIT key Figure 7 1 Main Menu Flowchart ...

Страница 25: ...eadings and may be set for 0 1 or 2 For example ZERO readings for 0 1 2 decimal points displays as 0 0 0 0 00 CAL SPAN VALUE sets the engineering units value of the calibration gas GDS Corp recommends that the calibration gas value be between 25 and 75 of full scale Calibrating at 100 of scale is not recommended READOUT DEADBAND forces low values to continue to read zero This is useful when there ...

Страница 26: ...R DATA allows the user to manually upload the entire smart sensor database to the GASMAX II from the smart sensor CAL MARKER allows the user to set the 4 20mA output value that is transmitted during ZERO and SPAN calibration This setting is limited to between 2ma and 20mA and is a useful way to indicate to a GDS controller that the unit is in CAL MODE TX SENSOR LIFE causes the GASMAX II 4 20mA out...

Страница 27: ...ter tripping at 20 ppm the value must drop below 15 ppm to reset ON DELAY allows entering a maximum 10 second delay before this alarm becomes active This is useful for preventing nuisance alarms caused by brief spikes beyond the set point OFF DELAY allows entering a maximum 120 minute delay before clearing an alarm after the alarm condition is gone This is useful for continuing an alarm function s...

Страница 28: ...rical CAL data and sets sensor life to 100 after initial calibration of the new simple sensor The GASMAX II Smart Sensor interface will automatically detect new Smart Sensors and this menu is therefore not available with a Smart Sensor connected RECALL CAL HISTORY recalls each successful calibration These dates may be reviewed by scrolling with the UP DOWN keys R S 4 8 5 M O D B U S S E T U P R T ...

Страница 29: ...e zone during installation to make sure that time stamped Event Log entries are correct Figure 7 7 Clock Delay Menu TIME adjusts time of day in hours minutes and seconds DATE adjusts date in month day year WARM UP DELAY sets the amount of time from power on until the 4 20mA output signal begins to track the sensor output Default setting is 60 seconds Maximum value is 255 seconds CAL PURGE DELAY se...

Страница 30: ...n against operation by unauthorized personnel or those with malicious intent Figure 7 10 System Security Menu CONTACT NAME is a 12 character ASCII field available for displaying a phone or name of personal who knows the Pass Code Lost Pass Codes may be recovered by entering the locked security menu and holding the UP key for 5 seconds The 4 digit code appears near the bottom of the screen SECURE L...

Страница 31: ... key for 5 seconds until the screen appears requesting the special key sequence WARNING TARGET GAS MONITORING AND ALARM PROCESSING ARE NOT ACTIVE WHILE IN THIS MENU Figure 7 11 Xmitter Config Menu O2 TOXIC when set to YES enables the Oxygen Toxic channel Channel 1 LEL CURRENT when set to YES enables the LEL Current channel Channel 2 OUTPUT ZERO SPAN TRIM provides a way to precisely set the GASMAX ...

Страница 32: ...refore if the sensor is mounted some distance away from the GASMAX II the excitation voltage may have to be higher to compensate for losses in field wiring S E N S O R B A L A N C E R e a d i n g 3 C o u n t s 4 9 6 U P D N t o C h a n g e N E X T t o E x i t S E N S O R V O L T A G E V o l t s 2 0 4 U P D N t o C h a n g e N E X T t o E x i t W A R N I N G H i g h v o l t a g e m a y d a m a g e ...

Страница 33: ...ues and for standard sensors and applications these values should not be changed ZERO CAL VALUE should always be set to RAW MIN MAX COUNTS is factory preset and should not be changed MARKER ACTIVE enables an input level monitor on the channel 2 input if the input is set to accept a 4 20mA signal If Marker Active is set the YES the following actions may be programmed to occur when the input signal ...

Страница 34: ...channel 2 combustible Verify that controller MI and M count settings are correct MI counts should be which corresponds to 4mA and MAX counts should be which corresponds to m Verify that the G M MO B address matches the address programmed into the controller s channel configuration CONTROLLER SHOWING MODBUS COMM ERROR Check for incorrect MO B polarity swap and B if unsure no damage will occur Verif...

Страница 35: ...ct factory 10 Linearization Data CRC Fail Error in system data file Contact factory SOFTWARE RESET COLD BOOT If the G M display shows nonsense characters or one or more of the settings appear to be corrupted performing a Cold Boot will restore the default values in the non volatile memory and may clear the problem o perform a Cold Boot perform one of the two following procedures Disconnect power H...

Страница 36: ... D2A Raw 31001 4 N A 10 bit value 200 4mA 1000 20mA Ch 2 D2A Raw 31002 4 N A 10 bit value 200 4mA 1000 20mA Ch 1 A2D Raw 31003 4 N A 10 bit value from A D converter Ch 2 A2D Raw 31004 4 N A 10 bit value from A D converter Ch 1 Status 31005 4 N A See Channel Status Word definition Ch 2 Status 31006 4 N A See Channel Status Word definition Alarm Status Word 31007 4 N A See Alarm Status Word definiti...

Страница 37: ... Cal Zero Real 41001 3 N A Real value without decimal point Ch 1 Cal Zero Divisor 41002 3 N A Divisor 1 10 100 or 1000 Ch 1 Cal Span Real 41003 3 N A Ch 1 Cal Span Divisor 41004 3 N A Ch 1 Zero Real 41005 3 N A Ch 1 Zero Divisor 41006 3 N A Ch 1 Span Real 41007 3 N A Ch 1 Span Divisor 41008 3 N A Ch 1 Fault Real 41009 3 N A Ch 1 Fault Divisor 41010 3 N A Ch 1 Alarm 1 Real 41011 3 N A Ch 1 Alarm 1 ...

Страница 38: ...D2A MIN 41043 3 N A Ch 1 D2A MAX 41044 3 N A Ch 2 A2D MIN 41045 3 N A Ch 2 A2D MAX 41046 3 N A Ch 2 D2A MIN 41047 3 N A Ch 2 D2A MAX 41048 3 N A CHANNEL STATUS WORD BIT DEFINITION Channel Status Word Bit 0 Alarm 1 Below 1 Alarm 1 Above 0 Bit 1 Alarm 2 Below 1 Alarm 2 Above 0 Bit 2 Alarm 3 Below 1 Alarm 3 Above 0 Bit 3 Alarm 1 Latch 1 Alarm 1 not latch 0 Bit 4 Alarm 2 Latch 1 Alarm 2 not latch 0 Bi...

Страница 39: ...eserved Bit 8 Relay 1 Energized 1 no relay 0 Bit 9 Relay 2 Energized 1 no relay 0 Bit 10 Relay 3 Energized 1 no relay 0 Bit 11 15 Reserved TRANSMITTER STATUS WORD BIT DEFINITION Transmitter Status Word Bit 0 Ch 1 Active 1 Ch 1 inactive 0 Bit 1 Ch 2 Active 1 Ch 2 inactive 0 Bit 2 Secure Level 1 no security 0 Bit 3 Marker Tx LED 1 no marker 0 Bit 4 11 Reserved Bit 12 Relay 1 Failsafe 1 normal 0 Bit ...

Страница 40: ...ource outputs with fault and overrange indication Maximum loop resistance is 750 ohms with standard 24VDC supply Fault output 0 0 mA for all fault conditions Optional Output Relay MODBUS interface with 3x 5A SPDT programmable alarm relays Dual isolated 4 20mA outputs Single or dual input MODBUS slave interface no relays Temperature Electronics 40 C to 60 C See Sensor Manual for additional details ...

Страница 41: ...O C C O K K3 MO B elay 3 3 B Isolated ual m Output E Out E Out EC Out EC Out Isolated m I O Power Supply Ch1 Ch2 10 0233 420 Toxic 4 20mA 10 0233 D4 4 20mA 4 20mA 20 0148 GDS IR interface PCB Display 10 0232 GASMAX Display Yellow Enclosure 10 0160 GASMAX Enclosure MODBUS Relay Board 10 0234 MODBUS Relays 2000 0135 MODBUS only ISOLATED 4 20mA Board 10 0250 Dual 4 20mA Output Sensor GDS IR 1 110 1 M...

Страница 42: ...closure 20 0152 GDS IR Junction Box Interface PCB Sensor GDS IR 1 110 1 Methane GDS IR 1 111 1 Propane GDS IR 1 116 1 Ethanol GDS IR 1 132 1 Carbon Monoxide Contact GDS Corp for additional gases Sensor Accessories 20 0236 Rain Shield Horizontal Mount 2000 0057 Rain Guard Vertical Mount 1200 0811 Replacement hydrophobic filter 10 0270 Stainless steel duct mount ...

Страница 43: ...R Operation Maintenance Manual Revision 1 1 Page 43 12 DRAWINGS AND DIMENSIONS Figure 12 1 GASMAX II GDS IR Dimensions Local Vertical Sensor M E A S U R E M E N T N A M E 12 E E I I NPT 2x 5 00 2 5 Cal Gas Inlet xx 00 ...

Страница 44: ...SMAX II GDS IR Operation Maintenance Manual Revision 1 1 Page 44 Figure 12 2 GASMAX II GDS IR Dimensions Local Horizontal Sensor M E A S U R E M E N T N A M E 12 E E I I 5 00 2 5 Cal Gas Inlet xx 00 xx 00 ...

Страница 45: ...GASMAX II GDS IR Operation Maintenance Manual Revision 1 1 Page 45 Figure 12 3 GDS IR Dimensions Remote Vertical Sensor NPT 2x 5 00 2 5 xx 00 Cal Gas Inlet ...

Страница 46: ...GDS IR Operation Maintenance Manual Revision 1 1 Page 46 Figure 12 4 GDS IR Dimensions Remote Vertical Sensor with Duct Mount 5 0 2 5 15 25 6 7 Cal Gas Inlet 27 NPT Customer Supplied Tubing Fittings Optional 8 25 ...

Страница 47: ...GASMAX II GDS IR Operation Maintenance Manual Revision 1 1 Page 47 Figure 12 5 GDS IR Duct Mount Hole Cutout Pattern ...

Страница 48: ...GASMAX II GDS IR Operation Maintenance Manual Revision 1 1 Page 48 Figure 12 6 GDS IR Rain Shield p n 20 0236 Horizontal Mount Figure 12 7 GDS IR Rain Guard p n 3000 9005 Vertical Mount Koozie 4 5 5 10 ...

Страница 49: ...DS IR Operation Maintenance Manual Revision 1 1 Page 49 Figure 12 8 Wiring Diagram Local GDS IR Sensor ibbon to isplay IO Power upply m Input PW I COM PW O O G B B Use magnetic wand or local pushbutton to Set Zero ...

Страница 50: ...ual Revision 1 1 Page 50 Figure 12 9 Wiring Diagram Remote GDS IR Sensor 3 wire Interface ibbon to isplay IO Power upply m Input PW I COM PW O O G B B Use magnetic wand or local pushbutton to Set Zero at IR Sensor IR Zero Unavailable at Display ...

Страница 51: ... Page 51 Figure 12 10 Wiring Diagram Remote GDS IR Sensor 4 wire Interface ibbon to isplay IO Power upply m Input PW I COM PW O O G B B Use magnetic wand or local pushbutton to Set Zero at Display Use magnetic wand or local pushbutton to Set Zero at IR Sensor ...

Страница 52: ...e Manual Revision 1 1 Page 52 Figure 12 11 Wiring Diagram Local GDS IR using p n 20 0235 Interface PCB ocal G I ibbon to isplay IO Power upply 33 B E COM C PW O O G B B I rom rom rom 3 m Output V Input Power Common ocal G I Infrared ensor ...

Страница 53: ... Manual Revision 1 1 Page 53 Figure 12 12 Wiring Diagram Remote GDS IR using p n 20 0235 Interface PCB emote G I ibbon to isplay IO Power upply 33 B E COM C PW O O G B B I rom rom rom 3 m Output V Input Power Common emote G I Infrared ensor ...

Страница 54: ...GASMAX II GDS IR Operation Maintenance Manual Revision 1 1 Page 54 Figure 12 13 Wiring Diagram Dual Remote GDS IR ibbon to isplay IO Power upply 33 PW I COM PW O O G B B I ...

Страница 55: ......

Страница 56: ...GDS Corp 1245 Butler Road League City TX 77573 409 927 2980 409 927 4180 Fax ww gdscorp com ...

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