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Bacharach GDX-350 Owner's Manual

1. SYSTEM SECURITY 71 SMART SENSOR We Contact Name Secure Level LOW D 166 Pass Code Zero a SH XXXXXX Unlocked Born On 10705706 Last Cal 04705707 NEST key to Exit Historical CAL data Will be Deleted EDIT to Accert HEST to Abort r INSTALL SENSOR Down ag is 8rY 12 18 oot 687157607 12 55 Sn END OF LOG SMART SENSOR info menu only available with Smart sensor installed RADIO SETUP 9 6MH2 RADIO SETUP 988MHz Hor Channel 1 32 Rer Edit Remote ID 1 255 Wellakeur Time 366s System ID 1 255 Down RadioStatus gt Ta Multirles 1 idaho RF Handshaking OFF Tx Power 18mlU 1WURTT r RADIO STATUS 7 7 Server In Range or No Server Found Power 3 57 Volts NEXT key to exit WARNING Variables in the Technicians Only menu are critical for correct operation A thorough understanding of each variable is required READ amp UNDERSTAND THE MANUAL Technicians Only menus discussed in Section 6 Figure 5 2 Configuration Menu Tree RF Model 34 P N 5600 9001 Rev 2 GDX 350 Sensor Transmitter 5 2 Configuration Using the Magnetic Wand Passing the magnetic wand past the EDIT key from either data display screen displays SETUP PAGE 1 as shown in Figure 5 3 The UP DOWN keys maneuver the pointer while EDIT enters sub le
2. Most installations utilize locally mounted dipole antennas as shown in Figure 2 6 An option is available for a 6 foot riser to increase the height of the antenna 6 feet above the GDX 350 Extreme cases may require special order of directional antennas mounted in such a way to allow aiming towards the base station antenna Minimize obstructions between the GDX 350 and the base station antenna Dipole Antenna Straight R SMA Dipole Antenna Explosion Proof Antenna Bushing EM RP SMA Division 2 Compliant Division 1 Compliant Figure 2 6 Local Antennas 900MHZ Shown P N 5600 9001 Rev 2 21 GDX 350 Sensor Transmitter 2 6 Water Proofing Antenna Connection Waterproof all outdoor coax connectors using a three layer sealing process of initial layer of adhesive PVC tape followed by a second layer of self vulcanizing weatherproofing tape such as 3M 23 with a final layer of adhesive PVC tape see Figure 2 7 1 Attach antenna to 2 Wrap 20 24 strip 3 Wrap 20 24 strip A Wrap 24 28 strip RP SMA fitting PVC electrical 3M 23 tape order PVC electrical tape onto hub nut 1000 2314 onto tape over all amp base of antenna PVC tape Figure 2 7 Water Proofing Antenna Connections 2 System Grounding Direct grounding of the GDX 350 enclosure via a good electrical connection to a well designed grounding system is essential This will protect your system reduce the damage that can occur during lightning strikes
3. 2 years from date of shipment consumables not included Power Supply Integral non rechargeable 3 6 volt 19AH lithium D cell battery Certification Power Consumption lt 2mA during sleep mode 40mA during receive beacon mode up to 1 amp during 1 watt transmit mode Transmit power may be set from 10mW to 1 watt RF Specifications Transmit TX Power 30dBm at highest 1W power setting Transmit power may be set from 10mW to 1 watt Receive RX Sensitivity 100 dBm Radio Frequency Hopping occurs between 902 MHz and 928 MHz Memory Non volatile E memory retains configuration values in the event of power outages P N 5600 9007 Rev 2 15 GDX 350 Sensor Transmitter 1 10 Sensor Specifications Gas Sensor Measuring Range Display Resolution Span Point Default Low Alarm High Alarm Response Time T90 0 1000 ppm Q O EC 100 ppm 35 ppm 70 ppm 50 s Oz 0 25 0 1 20 9 19 5 18 5 30 s EC 0 99 9 SO opm EC 0 1 ppm 5 0 ppm 2 0 ppm 4 0 ppm 45 s 0 99 9 NO ppm EC 0 1 ppm 5 0 ppm 1 0 ppm 2 0 ppm lt 5s PH 0 5 ppm 0 01 ppm 1 00 ppm 0 30 ppm 0 60 ppm 60 s 0 C 0 CH 0 ie OR o 25 LEL 10 LEL 20 LEL lt 60s 0 100 LEL 0 500 ppm 1 25 LEL 10 LEL 20 LEL lt 60 s Z I O GA e d 1 ppm 25 ppm 25 ppm 50 ppm lt 5S 16 P N 5600 9007 Rev 2 GDX 350 Sensor Transmitter 2 INSTALLATION INSTRUCTIONS 2 1 Sensor Location Factors such a
4. e Maximum RF TX power setting 30 dBm 1 Watt e RF RX sensitivity 100 dBm this is a constant e Antenna gain standard equipped dipole 2 1dBi x 2 4 2dBi So the system operating margin is 30 100 4 2 134 2 dBm This is enough to transmit 10 miles if freespace was the only loss in the system For this to be the case the antennas must be mounted with a combined height greater than 95 ft above all obstructions including the ground to keep the Fresnel zone clear In practice however there are many losses in the system besides just freespace and it is recommended there be at least 20dB extra system operating margin RF Rules of Thumb e Doubling the range with good RF Line of Site LOS requires an increase of 6 dB e Doubling the range without good RF LOS requires an increase of 12 dB 2 5 Antenna Selection and Location A site survey using an RF spectrum analyzer and test radios is highly recommended The location of the antenna is very important Ensure the area surrounding the proposed location is clear of objects such as other antennas trees or power lines which may affect the antenna s performance and efficiency It is also vital that you ensure the support structure and mounting arrangement is adequate to support the antenna under all anticipated environmental conditions The choice of appropriate mounting hardware is also important for both minimizing corrosion and maintaining site inter modulation performance
5. GDX 350 Sensor Transmitter 3 INITIAL START UP 3 1 Model Name When power is applied to the GDX 350 it will briefly show a 10 digit ASCII model and company name during start up The name can be edited in the Transmitter Configuration menu by editing the Model field Figure 3 1 shows how to access the menu for setting the 10 digit ASCII model name which is displayed briefly after power is applied to the GDX 350 RF shown To access from any data display press and hold the NEXT key for 5 seconds until the screen appears requesting a special key sequence 4 UP keystrokes AMITTER CONFIG Enter Key Sequence HOLD Lo access menu D Inrut 027 TOXIC NEXT KEY Model 10 digits 5 SECONDS NEXT key to Exit See Manual HELP Figure 3 1 Transmitter Configuration Menu 3 2 Initial Toxic Oxygen Sensor Monitor Start Up GDX 350 Toxic Oxygen Monitors which are factory equipped with a local Simple or Smart electrochemical sensor rarely require adjustments other than routine calibrations to provide accurate readings However after installation the following check should be performed to ensure proper operation In addition alarm levels Measurement Name ASCII fields and other variables may require attention by users in order to best serve their application 3 3 Initial Toxic Oxygen Sensor Monitor Span Check Prior to the initial Routine Sensor Calibration described in Section 4 1 on page 29 a coarse SPAN gas reading ve
6. The Measurable Difference GDX 350 Sensor Transmitter Instruction 5600 9001 Installation Operation Maintenance Rev 2 October 2012 Product Leadership Training Service Reliability GDX 350 Sensor Transmitter WARRANTY Bacharach Inc warrants to Buyer that at the time of delivery this Product will be free from defects in material and manufacture and will conform substantially to Bacharach Inc s applicable specifications Bacharach s liability and Buyer s remedy under this warranty are limited to the repair or replacement at Bacharach s option of this Product or parts thereof returned to Seller at the factory of manufacture and shown to Bacharach Inc s reasonable satisfaction to have been defective provided that written notice of the defect shall have been given by Buyer to Bacharach Inc within two 2 years after the date of delivery of this Product by Bacharach Inc Bacharach Inc warrants to Buyer that it will convey good title to this Product Bacharach s liability and Buyer s remedy under this warranty of title are limited to the removal of any title defects or at the election of Bacharach to the replacement of this Product or parts thereof that are defective in title The warranty set forth in paragraph 1 does not apply to parts the Operating Instructions designate as having a limited shelf life or as being expended in normal use e g filters THE FOREGOING WARRANTIES ARE EXCLUSIVE AND ARE GIVEN AND A
7. 5 14 ee ee Re 44 5 15 Modbus Register and Function Code Summary esses nennen 45 SUE SVSIEM SECURIY RE t m 49 6 SERVICECENTER ae 49 VVV 4 P N 5600 9001 Rev 2 GDX 350 Sensor Transmitter 1 OVERVIEW 1 1 Stand alone and Wired Networks The GDX 350 is a fixed point monitor designed to provide continuous monitoring of hazardous gases in the workplace Monitored values are displayed in their engineering units as well as graphically such as bar graphs or 30 minute trends see Figure 1 1 uu WWW ALMRST UP Q AiM1 ALM2 FAIL NEXT UP atmi ALM2 FAIL NEXT NEXT key toggles readout LEL Measurement Name DOWN CAL DOWN CAL Figure 1 1 Engineering Units Data Displays Bar Graph Left 30 Minute Trend Right Input types include electrochemical toxic and oxygen sensors catalytic bead combustible sensors MOS solid state sensors as well as various millivolt volt and 4 20 mA inputs Sensors supplied by the factory include an 8 wire Smart Sensor interface capable of configuring data uploads to the GDX 350 Traditional 3 wire Simple sensors without the smart interface are also supported by the GDX 350 Its advanced microcontroller electronics and superior graphic LCD operator interface offer enhanced diagnostics and fault analysis not possible in competing products The GDX 350 provides a standard 4 20 mA output signal for connection to control systems or other alarm instrumentation Available options
8. Figure 2 8 A small ribbon cable is attached with sufficient length to allow access to the I O PCB mounted in the bottom of the enclosure Power and signal connections are to TB2 where 24 VDC Signal and Common wires must be connected A blocking diode protects the GDX 350 if polarity of the power supply is reversed but it will not operate 4 Reassemble the GDX 350 Follow the procedures and recommendations in the receiver and l power supply manuals to complete the installation 5 Be sure the GDX 350 enclosure and conduit are properly grounded Apply power and observe that the GDX 350 functions o TP1 BRIDGE SENSOR TB2 3 wire xmtr apply 10 30 VDC between PWR amp GND OUT 4 20 s source output TB2 2 Toxic O2 TB2 3 Bridge TB1 Simple Bridge sensor input Sensor excitation volts between REF amp ACT S1 Smart Bridge sensor input only Figure 2 8 5600 0006 I O Power Supply 3 Wire 4 20 mA Assembly 2 9 Alarms RS 485 Modbus Option Installation The optional Alarms RS 485 Modbus board P N 5600 0007 supplies two level alarm relays a FAULT relay and an RS 485 Modbus RTU slave port Figure 2 9 This board is piggybacked behind the Display Assembly P N 5600 0005 as shown in Figure 2 8 Addition of this option requires 3 wire mode 4 20 mA operation and thereby requires the I O Power Supply board P N 5600 0006 Figure 2 8 This is because relays and RS 485 circuits require much more power than 2 wire 4
9. The magnetic keypad allows non intrusive calibrations be performed by one person without opening the enclosure A real time clock amp calendar feature allows logging of calibrations alarm trips communication faults and other events for review on the LCD readout Compatible sensors include an 8 wire Smart Sensor interface capable of configuration data uploads to the monitor Traditional Simple sensors without the smart interface are also supported A separate PC compatible USB Interface device allows Smart sensors to be loaded with configuration variables via a PC and upload this data to the GDX 350 This configuration data includes alarm set points range target gas calibration constants and other variables required to match a specific application For Simple sensors without the smart interface the USB device allows direct GDX 350 configuration from a PC Additional features include e On screen radio status icons indicate Server In Range Server Out of Range Server Previously Out of Range and Low Battery conditions e No potentiometer or jumper settings required All setup is with menus accessed via the LCD magnetic keypad operator interface without opening the enclosure e Field adjustable alarm levels flash front panel LED indicators for HIGH WARN FAIL conditions Alarm relays are not available with this low power model e CAL MODE provides on screen prompts when to apply cal gas during calibrations e S
10. include an Alarm Relay RS 485 Modbus board or an isolated 4 20 mA output Non volatile memory retains all configuration data during power interruptions The magnetic non intrusive calibration can be easily performed by a single person without opening the enclosure A standard Real Time Clock and Calendar feature allows data logging of calibrations and alarm events for recall to the LCD readout or over the serial port Only periodic calibration checks are needed to assure dependable performance The operator interface is very intuitive with the LCD displaying data both graphically as bar graphs trends as well as in engineering units Figure 1 1 Additional features include e No potentiometer or jumper settings required All setup is completed through display menus accessed via the LCD magnetic keypad operator interface without opening the enclosure Field adjustable alarm levels may be high low fault fail safe latching and acknowledgeable New alarms cause front LEDs to flash and become steady after acknowledgement CAL MODE advises when to apply gas during calibrations One half hour trend screen shows rate of change of gas exposures Sensor life bar graph automatically updates after each SPAN calibration Modular design allows for efficient installation as well as plug in sensors that allow a change in target gas after installation New smart sensors are recognized by the GDX 350 and prompt users to either upload new configuration da
11. 20 mA loops can deliver P N 5600 9007 Rev 2 23 GDX 350 Sensor Transmitter CAUTION Alarm relays have dry contacts and power must be supplied from an external source Contacts are rated for RESISTIVE loads Inductive loads such as contactor coils or motors may cause contact arcing which shortens life and emits RFI into the sensor signals Use appropriate arcing snubbers and MOVs across inductive loads and keep wiring away from signal wires External wiring to TB3 Remote Alarm Reset should be shielded and protected from noise spikes to prevent false Alarm Reset Remote Alarm Reset CE Q 8 P Alarm ModBus Option Relay 1 Ki K1 A Installs RS 485 Terminating Resistor B Omits RS 485 Terminating Resistor Relay 2 K2 RS 485 A amp B terminals are connected internally for easier IN OUT cabling S Is no connect for shield to continue Relay 3 KS O O O O OOOO cO oOo N 9 Cc A C N TB1 Figure 2 9 Alarm Relays Modbus Option P N 5600 0007 Alarms RS 485 Modbus Option Installation Unscrew the cover on the GDX 350 explosion proof enclosure Loosen the two thumbscrews holding the display assembly in place and remove A small ribbon cable is attached with sufficient length to access the back of the Display assembly where the Alarms RS 485 Modbus board option is located Itis possible to use only relays only RS 485 or both Relay terminals are labeled NO normally open NC n
12. 9007 Rev 2 47 GDX 350 Sensor Transmitter VARIABLE ALIAS READ FUNCTION CODE WRITE FUNCTION CODE Gei 2Disor 40M SSCA ronan Alam Real aos a nm CmviMamsDWay 4016 J nm CmmiWameiGanRed am a nm Can 1 Manual Can onor am nm Can Manual Offset Ren 4119 nm Ger Manual Offset Divsor am 4 oo NA chan 2CalZeroRea aa a wm KR AIAI AIAI R RY BR 48 P N 5600 9007 Rev 2 GDX 350 Sensor Transmitter Binary Cal Data VARIABLE READ FUNCTION CODE WRITE FUNCTION CODE emp no a nm eu mos a o o o eu noa a O o Cm2mDMN me 4 NW Cm2 amp DWAX mmm a a Crnzozamin mor a O nu epp mos a nu 1 Min and Max calibration points for the A D and D A converters 5 16 System Security The SYSTEM SECURITY menu offers two levels of protection A LOW level allows CAL MODE sensor calibrations but requires the 4 digit Pass Code prior to altering menus HIG2H level locks the entire menu database and the CAL Mode until the correct Pass Code is entered LOW and HIGH security levels always allow viewing of configuration menus but they may not be changed Contact Name is a 12 character ASCII field available for displaying a phone or name of personnel who know 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 SYSTEM SECURITY B Contact
13. Configuration Menus Menu Item Description May be edited to contain virtually any 16 character ASCII field It is typically Measurement Name used to describe the monitored point by user tag or other familiar terminology Engineering Units May have up to a 10 character ASCII field Many common gases have pre configured Eunits based upon the sensor type Each may be edited in this menu as described in Configuration Using the Magnetic Wand in section 5 2 on page 35 Zero 0 Defines the reading to be displayed when 4 mA 0 is the GDX 350 output P N 5600 9001 Rev 2 35 GDX 350 Sensor Transmitter Menu Item Span 100 Decimal Points Cal Span Value Readout Deadband Track Negative Linearization Data Menu Item Backup Config Restore Config Cal Marker 36 Enter to access menu 4 TIMES aelinearize NO TROU Data Point 1 NEXT key to Exit Input Out put See Manual Description Defines the reading to be displayed when 20 mA 100 is the GDX 350 output The highest reading allowed is 9999 Included is a negative polarity sign and one decimal point Polarity is only indicated for negative readings sets the resolution of the LCD readings and may be for 0 1 or 2 Example ZERO readings for 0 1 and 2 DPs respectively are 0 0 0 and 0 00 Sets which upscale value must be applied when performing Span calibrations Allows for forcing of low values to continue to read zero This is us
14. JAON WO TE 04 Uunjay LX3N YXXXX Ud 40sua8s 53 YM peKe dsip vog MEG IER anjen eds 42S I03 KXXXXKX ENnIEN UES TED XXXX sSjunoj j41unj Bgurpee4 gott 98S G Aen dN PIOH 1103 usu TVO BUEN 4ueuaunseay 7771 191 A c AVIdSIa VIVO P N 5600 9001 Rev 2 32 GDX 350 Sensor Transmitter 9 SETUP MENU CONFIGURATION 5 1 Menus Database Configuration All GDX 350 configuration variables are stored in its menu database Many menu items will contain default values from the factory and require changes to better match a user s particular application GDX 350 menus may be configured from the magnetic keypad The GDX 350 s configuration menus are shown below Pressing EDIT from either data display enters the LEL or EC SETUP PAGE 1 menu we Key Sequence 4 consecutive UP strokes LEL INPUT 1 SYSTEM CONFIG PG 1 SYSTEM CONFIG PG 2 soe CURVE POINTS B Gasten Confia Pheasurement Hame 16 um PResdout Deadband amp Enter key Sequence pkey Alarm Settings Eunits SEMA O DOWN Track Negative HO EDIT Lo access menu mes WeLinearize N
15. SM JOMJ9N BIM S8v SM 25 P N 5600 9001 Rev 2 GDX 350 Sensor Transmitter 2 10 Isolated 4 20 mA Output Option The optional Isolated 4 20 mA option P N 5600 0009 as shown in Figure 2 11 provides dual 4 20 mA outputs that are electrically isolated from sensor inputs and the 24 VDC power source Each 4 20 mA output shares the same common terminal and are not isolated from one another This board is piggybacked behind the Display Assembly P N 5600 0005 as seen in Figure 2 2 Addition of this option requires 4 wire mode 4 20 mA operation and thereby requires the use of an I O Power Supply board Figure 2 8 Isolated 4 20mA Output Option Iso 4 20mA Out Figure 2 11 Isolated 4 20 mA Output Option P N 5600 0009 2 11 Sensor Installation The GDX 350 Smart Sensor interface uses proven electrochemical technology for toxic oxygen and catalytic bead for LEL In addition a tiny memory IC is incorporated into GDX 350 factory supplied Smart sensors allowing them to contain the entire database of GDX 350 parameters onboard the replaceable Smart Sensor assembly Figure 2 12 Electrochemical and catalytic bead smart sensors both plug into the Smart Sensor Head that connects to GDX 350 electronics with its 8 conductor Smart Sensor Interface cable Figure 2 12 Smart EC or Bridge Sensor element Smart Sensor Head Base Sensor Head Cap Ground Wire N E Orange Sensor 1 Yellow Sensor
16. and reduce noise 2 8 3 Wire 4 20 mA Mode Installation WARNING GDX 350s equipped with the I O Power Supply board P N 5600 0006 only operate as 3 or 4 wire 4 20 mA transmitters and are not compatible with 2 wire intrinsically safe installations Such units should not be combined with IS Sensor Heads without flame arrestors unless the area is classified as non hazardous GDX 350s equipped with the I O Power Supply P N 5600 0006 and Alarms Modbus option P N 5600 0007 are NRTL certified as suitable for Div 1 and 2 Groups B C and D explosion proof installations with the IS Sensor Head or with any sensor head with an equivalent CSA certification 3 wire sourcing transmitters require an additional dedicated 24 VDC wire The 4 20 mA loop current is then delivered or sourced from the transmitter output and the receiver device must not provide 24 VDC from its input terminal When the GDX 350 is equipped with the bottom I O Power Supply board P N 5600 0006 shown in Figure 2 8 the 2 wire 4 20 mA output is disabled and one of the boards 3 wire outputs must be used TB2 terminal 2 is for ECHEM toxic oxygen 3 wire 4 20 mA output signals while the TB2 terminal 3 is for LEL 3 wire 4 20 mA output signals 22 P N 5600 9001 Rev 2 GDX 350 Sensor Transmitter STEP 3 WIRE 4 20 mA MODE INSTALLATION Unscrew the cover on the GDX 350 explosion proof enclosure Loosen the 2 thumbscrews holding the display assembly in place and remove it refer to
17. most recent transmitted value from the wireless monitor Figure 5 14 5 10 System Security The SYSTEM SECURITY menu in Figure 5 14 offers two levels of protection A LOW level allows CAL MODE sensor calibrations but requires the 4 digit Pass Code prior to altering menus HIGH level locks the entire menu database and CAL Mode until the correct Pass Code is entered LOW and HIGH security levels always allow viewing of configuration menus but they may not be changed Contact Name is a 12 character ASCII field available for displaying a phone or name of personal who know 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 SYSTEM SECURITY Contact Name Secure Level Lol Pass C ass Lode e Unlocked Figure 5 15 System Security Menu 5 11 LCD Contrast Adjustment LCD Contrast Adj May be set for optimum viewing using the menu shown in Figure 5 16 CONTRAST UP DOWN to change NEXT to EXIT Figure 5 16 LCD Contrast Adjust Menu P N 5600 9001 Rev 2 43 GDX 350 Sensor Transmitter 5 12 HELP Screen The HELP screen contains several pages of information describing how to operate the GDX 350 This is the bottom menu on page 1 of the SETUP screen 5 13 Diagnostics Diagnostics menus Access requires a special key sequence of four consecutive UP IMPORTANT Gas monitoring and alarm pr
18. on a different System ID Allows up to 5 consecutive repeats of EVERY transmission The default setting of 1 should only be increased if there is no other way to improve communications TX Multiples Gees l l See success Power consumption increases with radio transmissions and battery life will be affected by raising the TX Multiples setting Affects the way RF transmissions are made by the GDX 350 This menu may be set for OFF default or ON OFF requires no acknowledge from the receiving server ON should be used only when transmitting to a single receiving server such as a GDA 400 or GDA 1600 Controller Since ON creates an acknowledge hand shake returned from the receiver only one receiver is allowed to avoid data collisions of the acknowledge signal If an acknowledge is not received by the GDX 350 it transmits repeatedly up to 16 times RF HANDSHAKING OFF may be used for any application but is required when transmitting to a Server and other receiver Client radios RF HANDSHAKING ON always transmits the packet A times and does not require any acknowledge returned by the receivers 900MHZ models only May be set for 10 mW 200mW 400mW and 1 watt Since GDX 350s are battery powered the TX Power setting should be as low as possible to sustain reliable communication The maximum TX Power setting is 30db 1 watt TX Power and each time TX power is reduced by half antenna transmit power is reduced by 3dB 2 4GH
19. seconds during alarm conditions P N 5600 9001 Rev 2 7 GDX 350 Sensor Transmitter 1 3 2 RF Comm Cycle and Conserving Battery Life Most of the GDX 350 s battery power is consumed as the radio communicates to the wireless network Each Comm cycle consists of the following operations Awake the radio in receive mode listen for the Server s beacon synchronize to the Server s hopping frequency to become In Range SIT transmit data packet out the antenna and return to sleep mode This sequence takes from 0 25 to 1 second to complete If the radio fails to synchronize hopping upon the initial attempt it waits 6 seconds and tries again then waits 6 seconds and tries once more If the third attempt fails the Out of Range S icon appears and the GDX 350 returns to its Comm cycle Out of Range will also be logged into the Event Log Transmit power levels are adjustable 900MHx models only and the lower the power setting the longer the battery will last Every 6 seconds the monitor performs a sniff test to detect level of target gas present at the sensor At each sniff test the Zzz s Sleep Mode icon is briefly replaced by an RS icon At this time the readout updates to indicate gas value measured at the sniff test The radio stays OFF if the gas value does not trip A1 or A2 alarms Except when the Wakeup Time menu expires maximum of 5 minutes the radio turns on receives the Server s beacon and transmits its data Th
20. shown in Figure 5 9 SENSOR SETTINGS INFO INSTALL NEW SENSOR INSTALL NEW SENSOR B install Sensor gt EDIT to install Historical CAL data Recall Cal History gt New Sensor EDIT Will be Deleted Input Type SMART gt New Sensor 01 28 04 Any other key EDIT to Accept Recent Cal 04 05 04 to Exit NEXT to Abort Sensor Life A CALIBRATION DATES Record 22 of 22 CAL Date 04 05 04 UP DOWN to scroll NEXT to EXIT SMART SENSOR Type Cat Bead Span 10 0 Zero 0 SN XXXXXX Born On 01 28 04 Last Cal 04 05 04 ANY key to Exit Figure 5 9 Sensor Information Menus P N 5600 9001 Rev 2 39 GDX 350 Sensor Transmitter Menu Item Description Should always be performed when a new simple sensor is installed This deletes historical CAL data and sets sensor life to 100 after initial calibration Install New Sensor of the new simple sensor The GDX 350 Smart sensor interface will automatically detect new smart sensors and this menu is therefore not available with a smart sensor connected Recall Cal Histor Recalls each successful calibration These dates may be reviewed by scrolling Y with the UP DOWN keys Indicates which type of input or sensor the GDX 350 is configured to accept and is pre configured at the factory There are four Input Type possibilities Input Type consisting of bridge EC negative EC positive and 4 20 mA all are Smart Sensors Smart Sensors upload sensor type and other data to t
21. 2 Red Sensor 3 Green Spare Brown 3 3V Vcc Blue Clock White Data Black Common Bridge Sensor Catalytic Bead Industry standard infrared series 7 EC toxic oxygen Sensor 8 Conductor Smart Replacement Tool Sensor Interface Cable Onboard Memory IC interfaces to serial data bus Stores all data required to display amp alarm monitored values Figure 2 12 Smart Sensor Head Assembly 26 P N 5600 9001 Rev 2 GDX 350 Sensor Transmitter CAUTION Smart sensor heads with electrochemical toxic oxygen sensors must connect to S1 located on the back of the Display Assembly P N 5600 0005 as seen in Figure 2 2 N Smart sensor heads with catalytic bead combustible sensors must connect to S1 located on the optional I O PCB assembly Figure 2 8 Smart Sensors are automatically recognized by the GDX 350 The Smart Sensor identification screen in Figure 2 13 is shown after power up upon installation of a new smart sensor or by viewing INPUT type in the SENSOR SETTINGS INFO menu in Section 5 6 on page 39 SMART SENSOR Cat Bead 10 0 0 XXXXXX On 01 28 04 Cal 04 05 04 ANY key to Exit ERROR CODE 01 Incorrect Sensor installed Install correct sensor or update transmitter SEE MANUAL EDIT key to update Any other to abort If installed sensor type does not match transmitter database Figure 2 13 Smart Sensor Info ERROR Screens P N 5600 9001 Rev 2 27
22. 2 84 CAL Date 405 204 Warm Ur Sec 188 Cal Purge Sec 166 UP DOWH to scroll HEXT to EXIT CONTRAST SMART SENSOR UP DOWN to change Ir Cat Bead SMART SENSOR info menu only Sero a available with Smart sensor installed HEST to EXIT SH MR KEKE Born On 14 0504 ANY key to Exit ak WARMING H DIAGHOSTICS OUTPUT STIMULATOR Enter Key Sequence PRESS 9 ing will i i Lo access menu 4 TIMES Be ae dirina EL uic oe Nutrut SECH sek i 1 NEXT keu to Exit diagnostic mode EDIT to change EDIT t ti See Manual HELP Any other to exit SYSTEM SECURITY 7 ACTUATE RELAYS D Contact Hame Secure Level LOW ro ae Pass Code Relay 3 OFF Unlocked WARNING Variables in the Technicians Only menu are critical for correct operation A thorough understanding of each variable is required READ amp UNDERSTAND THE MANUAL Technicians Only menus discussed in Section 6 Figure 5 1 Configuration Menu Tree P N 5600 9001 Rev 2 33 GDX 350 Sensor Transmitter Pressing EDIT from either data display enters the EC SETUP PAGE 1 menu EC INPUT PG 1 System Config Alarm Settings Sensor Information Clock Delaus Communications Security Y LCD Contrast Adj Technicians ONLY Battery 3 5974 Uer RFxx m EC INPUT PG 2 SYSTEM CONFIG PG 2 A BReadout Deadband GG Track Negative NO SYSTEM CONFIG PG 1
23. CCEPTED IN LIEU OF I ANY AND ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ll ANY OBLIGATION LIABILITY RIGHT CLAIM OR REMEDY IN CONTRACT OR TORT WHETHER OR NOT ARISING FROM BACHARACH S NEGLIGENCE ACTUAL OR IMPLIED The remedies of the Buyer shall be limited to those provided herein to the exclusion of any and all other remedies including without limitation incidental or consequential damages No agreement varying or extending the foregoing warranties remedies or this limitation will be binding upon Bacharach Inc unless in writing signed by a duly authorized officer of Bacharach Register your warranty by visiting www MyBacharach com NOTICE Product improvements and enhancements are continuous therefore the specifications and information contained in this document may change without notice Bacharach Inc shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing performance or use of this material No part of this document may be photocopied reproduced or translated to another language without the prior written consent of Bacharach Inc Copyright 2012 Bacharach Inc All Rights Reserved BACHARACH is a registered trademark of Bacharach Inc All other trademarks trade names service marks and logos referenced herein belong to their respective ow
24. D 1 255 RadioStatus Clock Delays TX Multiples Power 3 54 Volts C j 1 We Communications RF Handshaking OFF security T4 Power 16mbl 1WATT NEXT key to exit Figure 5 11 Radio Setup Menu 40 P N 5600 9007 Rev 2 GDX 350 Sensor Transmitter Menu Item Description May be set from 1 32 and assigns the pseudo random radio frequency hopping pattern A transceiver will not go In Range of or communicate with a transceiver operating on a different Hop Channel Different hop channels can be used to prevent radios in one network from listening to transmissions of another Installations having more than one Server network should also have different hop Hop Channel channels for each network 2 4GHZ variation Hop channels on 2 4 GHZ models may be set between 0 and 39 Hop channels 0 19 includes EU low band frequencies 2406 2435MHZ Hop channels 20 39 includes EU high band frequencies 2444 2472MHZ IMPORTANT EXPLORE WHAT FREQUENCIES ARE APPROPRIATE FOR THE FINAL LOCATION OF ANY WIRELESS SYSTEM May be set from 1 255 and acts as the RTU address for this particular GDX 350 Remote ID Controller channels receiving this monitor s data must also be configured with this matching Remote ID address May be set from 1 255 and is similar to a password character or network number System ID and makes network eavesdropping more difficult A transceiver will not go In Range of or communicate with a transceiver operating
25. Log OFF Delay am Lou Trir NO Latching NO ALARM EVENT LOG 08712707 83 08 15 07 12 18 SnFIt Display Event Log 08 12 87 08715707 12 55 Sn OK ci Event Log 7127 Get RD Toon 08 12 07 END OF LOG Range Icon indicates prior Out of Range tee 15 G condition yy Reset to using this ler by S Reset to SI using 02 12 07 16 43 4313 87 82 48 menu Figure 5 7 Alarm Settings Menus Menu Item Description Enters the engineering unit value where the alarm trips It may be negative and trip when monitored values fall out of range in this direction A3 has a default negative 5 of range Set Point with Low Trip set for YES This makes it function as a FAULT alarm and trip when the monitored value is more than 5 out of range Has a minimum value of 1 and a maximum value of 10 It is useful for Dead Band preventing alarm cycling of 0 100 ppm if Dead Band equals 5 and the set point is 20 ppm after tripping at 20 ppm the value must drop below 15 ppm to reset point Allows entering a maximum 120 minute delay before clearing an alarm after the OFF Delay alarm condition is gone This is useful for continuing an alarm function such as operation of an exhaust fan for a period of time after the alarm condition clears Default set to YES Causes the alarm to trip as the value falls below the set point Latchin Default set to YES Causes the alarm to remain active even after the condition is 9 g
26. Name Secure Level LOW Pass Code Unlocked Figure 5 19 System Security Menu 6 SERVICE CENTER United States Bacharach Inc 621 Hunt Valley Circle New Kensington PA 15068 Phone 724 334 5000 Fax 724 334 5764 Email helo MyBacharach com P N 5600 9001 Rev 2 49 The Measurable Difference Headquarters 621 Hunt Valley Circle New Kensington PA 15068 7074 Toll Free 800 736 4666 Tel 1 724 334 5000 FAX 1 724 334 5001 Website www MyBacharach com E mail help MyBacharach com ISO 9001 Printed in U S A Registered Trademark of Bacharach Inc
27. O Sensor Information Zero No Eunits Linearization Data gt Hea Data Point 1 Clock Delass Sran C185 Eunits Backur Config gt HEXT key to Exit a Input 16 06 Diagnostics Decimal Points A Restore o Upload gt Dutrut 10 00 HELF Instructions Cal Sean Wal DD Cal Marker 3 BBmH See Manual HELP y TH Sensor Life HO L Simple Sensor Installed Smart Sensor Installed LEL INPUT 2 E SH E A A so SETTINGS 1 e n bo Alarm 1 2 3 menus Modbus RS485 Part RE J DESA Bend i ecuritu qu Alarm 3 Fail gt OH Delay Hs e e Relay Confia gt OFF Delas Bm mart sensor only Firmware Rew Event gt Bes HO o EVENT LOG gegt 68712704 GEP AL IN BP Ciselay Event Log 88riz 64 05551 Az IN riser Event Los BA ENS rizr E RS485 MODBUS SETUP RELAY CONFIG Cm ce udi TD tn E i Ar d as 12rag 16 43 ALOUT au ate ailsafe 08713704 82 85 AS IH Parity Hone K2 Acknowledge HO Stor Bit 1 EZ Refresh ff Down E3 always Failsafe u p 08713704 92 15 ASOUT INSTALL SENSOR menu not Zn K available with Smart sensor installed END OF LOG SENSOR SETUPAINFO q p INSTALL SENSOR INSTALL SENSOR Me beset Sense gt EDIT to install Historical CAL data tee GE Har ser lars Hew Sensor EDIT Will be Deleted neu ure Cat Bea Hew Sensor E1 28 04 Any other key EDIT to Accert Ge Cal ne to Exit HEXT to Abort ensor Life O m CLOCK DELAY SETUP CALIBRATION DATES Tine 12 35 42 Record 22 of 22 Date B4 2
28. P Relay Setur k2 AckcHorn Setur B Configure Radio E SE Wireless Receiver stem PIRE aM TX Pouer 1WATT Mode CLIENT SERVER li Communications d ire less MODBUS Input Output Setup Slave ID xxx Track Negative HO Radio configuration menu only displayed with 10 2454 RF module present on motherboard Figure 5 13 42 P N 5600 9007 Rev 2 GDX 350 Sensor Transmitter GDA 400 base stations must have their Communications menus set for Wireless Receiver mode as shown in Figure 5 12 In Receiver mode the GDA 400 may have 1 4 channels configured to receive input data from 1 4 GDX 350 sensor transmitters Channel input type is configured in the ANALOG SETUP menu located within the Input Output Setup menus as shown in Figure 5 13 GDX 350s transmit 200 counts for 0 and 1000 counts for 100 full scale readings so Input Min Max menu values should be 200 amp 1000 The Rmt Xmitter ID menu entry must match the Remote Id address setting in the GDX 350 providing data to this GDA 400 channel Voltage level of the 3 6 volt lithium battery in this GDX 350 is also displayed on this screen The most recent A D Counts value is displayed at bottom of the screen SYSTEM SETUP AHALOG SETUP Relay Setup Set Channel 1 4 R2 Hck 4Horn Setur Set Input Min Max ClockzDelaus Set Qutrut HMin Max Communications BS Input Tare WIRELESS gt Inrut Qutrut Setur inei big pP MA to RT 5i Track Hegative HO A D Counts A D Counts at bottom are
29. W Enter User Info 16 Ue Eunits KKRRKKKRKK 10 DOWN Zero Da a Backur Config gt Span 860 154 Restore Config gt Decimal Points a Urload Sensor Data Cal Span Val 38 1 ALARM SETTINGS yr ALARM x SETUP Alarm 1 2 3 menus Alarm 1 Set Point 20 are identical Hlarm 2 gt Dead Band 1 Alarm 3 Fail gt ON Delay Bs Event Log gt Der Dt en ow Trir EAD Latching HO ALARM EVENT LOG W eDisrlas Event Log Clear Event Log i Reset Range Icon CONTRAST Range Icon indicates prior Out of Range condition gi d Reset to IS using this UP DOWN to change menu Edit 03712707 63 17 Power 03712707 83 51 A2 IN 0838712707 03 55 ACK 88712787 84 16 AZOUT 03712707 4 23 DutR9g 98712787 15 746 InRn3 88712787 16 43 Ai IN 38713787 82 88 ALOUT NEST to EXIT kL _ INSTALL SENSOR menu not available with Smart sensor installed r SENSOR SETUP INFO Edit INSTALL NEW SENSOR SMART SENSOR Installl Recall Cal History gt Input Tyre EC Nes 5 Installed 61 28 67 Recent Cal 8465707 Sensor Life EDIT to install New Sensor Edit Any other key to Exit CLOCK DELAY SETUP m CALIBRATION DATES B gt Tine 12 35 42 Record 22 of 22 Date 88 22 07 CAL Date 04705707 Warm Up Sec 68 Cal Purge Sec 68 UP DOWN to scroll NEXT to EXIT
30. Z variation The TX Power menu is not available in 2 4GHZ models and RF Handshaking is fixed at 50mW TX Verbose Unavailable for firmware revisions 3 09 and earlier Menu is new to firmware revision 3 09 and determines how often the radio is activated WHEN THERE IS NOT AN A1 or A2 LEVEL ALARM The default value is 300 seconds 5 minutes but this may be reduced to as low as 6 seconds Intervals are rounded up to the nearest 6 seconds regardless of the menu entry example 50 second entry transmits every 54 seconds Wakeup Time IMPORTANT More frequent RF transmissions deplete the battery N faster P N 5600 9001 Rev 2 41 GDX 350 Sensor Transmitter Menu Item Description Opens another screen that shows if the RF GDX 350 is In Range of the Server and Radio Status what the battery voltage is Battery voltage is also displayed on the EC INPUT PG 2 screen TX Multiples Menu settings are available to improve communications reliability by increasing the quantity and power of wireless transmissions TT IMPORTANT Ensure proper selection and location of antennas before increasing TX Multiples and TX Power settings Battery life N will be reduced by increasing these settings Proper selection and TX Power location of antennas contributes much more to successful communications without sacrificing battery life than these settings F 5 9 Base Stations Figure 5 12 shows correct settings for the GDA 1600 bas
31. ansmitter Memory ASCII Strings VARIABLE ALIAS READ FUNCTION CODE WRITE FUNCTION CODE So a O Gei ASCIIReading 404204042 3 nm EUNTSChan aaor 3 mw UNTSChmz anna 3 na 1 16 ASCII characters 2 per register assigned to the unit identifier read as bytes 2 6 ASCII characters 2 per register reflecting the display readout 3 10 ASCII characters 2 per register assigned to the engineering units read as bytes Byte Variables VARIABLE ALIAS READ FUNCTION CODE WRITE FUNCTION CODE 1 2 bytes representing Pre Amp HiByte and PGA LoByte settings Firmware m ALIAS READ FUNCTION CODE WRITE FUNCTION CODE 1 4 ASCII characters 2 per register reflecting the firmware version Memory Reals NOTE Real value represents float value without the decimal point such as 123 4 is returned as 1234 Decimal divisor is returned as 1 10 100 or 1000 for decimal position of 1 2 3 or 4 where 123 4 would return the value 10 VARIABLE ALIAS READ FUNCTION CODE WRITE FUNCTION CODE Chan iCalzZeroReal m NA CmeiCaZeeDwsr moa a nn CmmiCaSpnRed aos 4 nm ea iCal Span Dvsor ae a nm CmmizeoRed aos a ww AIAI BR A rcran 1ZeroDivsor aos a mm rchaniSpanReal aor a NA rcran Span ivisor mos a o o Crantfautre 495 a NA CmeiFaDWgo 400 a w CranthamtRe 4o a NA CmiMamiDweg 40m a nm Sir BIBI A iN P N 5600
32. cable There is also a slender 4 conductor cable between the RF Module PCB and the battery I O PCB bolted to the bottom of the enclosure Cable to Battery Board MMCX RF Connector 900MHZ RF Module Smart electro chemical sensor input Figure 1 4 RF Module PCB P N 5600 9001 Rev 2 9 GDX 350 Sensor Transmitter 1 4 Safety Information Read Before Installation and Applying Power SIPIPIPIFIFIPIPIPI A E 10 IMPORTANT Users should have a detailed understanding of GDX 350 operating and maintenance instructions Use the GDX 350 only as specified in this manual otherwise the detection of gases and resulting protection provided may be impaired Read the following WARNINGS prior to use WARNING Calibrate with known target gas at start up and check on a regular schedule at least every 90 days More frequent inspections are encouraged to spot problems such as dirt oil paint grease or other foreign materials on the sensor head WARNING Do not use the GDX 350 if its enclosure is damaged or cracked or has missing components WARNING Make sure the cover internal PCBs antenna and field wiring connections are securely in place before operation WARNING Use only a sensor assembly compatible with the GDX 350 and approved by Bacharach Inc WARNING Periodically test for correct operation of the system s alarm events by exposing the monitor to a targeted gas concentration above the High Alarm set
33. de Summary The following tables identify GDX 350 Modbus register locations and function codes Chan 1 designations represent the EC channel while Chan 2 represents the LEL 4 20 mA Input channel Read Only Discretes VARIABLE ALIAS READ FUNCTION CODE WRITE FUNCTION CODE erg Immo nm Crnzhamt 204 0 20 mn einen me mn NO RM RM NM Nh Crn2rat 1 mee M 0 xw 2 M hg 3 2 M ha w o M ronan iCaiMode 1 340 2 om Cme2caMwe on 0 2 M SE Read Write Coils VARIABLE ALIAS READ FUNCTION CODE WRITE FUNCTION CODE Note After writing a TRUE to this register it resets back to FALSE automatically NO RM NM Bh NO Read Only Registers VARIABLE ALIAS READ FUNCTION CODE WRITE FUNCTION CODE EE 3p 4 nm pute au na tte 3a 4 NA mismas mos 4 nm BI EI BI RY A ronan 2staus 3006 0 4 M falar Status Word sor a M reene 3m nm roan isensortie 3e 4 M KR RL AR Chan 2 Sensor Life 300 4 Chan 1 Sensor Temperature 31011 Chan 2 Sensor Temperature 31012 1 Calibrated 10 bit value representing the D2A value of O to 1023 for 25 to 105 FS 200 096 and 1000710094 IMPORTANT Read registers 31001 31002 to create readings that match GDX 350 display values These should also be read by GDX 1600 Modbus masters 2 10 bit value representing the A2D value of O to 1023 before calibration constants are applied
34. e base w 4 20 mA output x 2 3 wire base w 4 20 mA output and Modbus x 1 2 wire base x 8 2 wire base w 900 MHz wireless x 9 2 wire base w 2 4 GHz wireless X 1 3 wire base w 4 20 mA output x 2 3 wire base w 4 20 mA output and Modbus x 1 2 wire base x 8 2 wire base w 900 MHz wireless x 9 2 wire base w 2 4 GHz wireless x 1 3 wire base w 4 20 mA output x 2 3 wire base w 4 20 mA output and Modbus x 1 2 wire base x 8 2 wire base w 900 MHz wireless x 9 2 wire base w 2 4 GHz wireless GDX 350 Sensor Transmitter Description Number Options x GDX 350 PH X 5601 307x x E A Transmitter Part 3 wire base w 4 20 mA output 3 wire base w 4 20 mA output and Modbus 2 wire base 2 wire base w 900 MHz wireless 2 wire base w 2 4 GHz wireless 3 wire base w 4 20 mA output GDX 350 CH X Catalytic 2000 20 Re GDX 350 CH 5600 321x X IR S x GDX 350 CO 5600 322x x GDX 350 C3H3 5600 323x X IR X 3 wire base w 4 20 mA output and Modbus 3 wire base w 4 20 mA output 3 wire base w 4 20 mA output and Modbus 3 wire base w 4 20 mA output 3 wire base w 4 20 mA output and Modbus 3 wire base w 4 20 mA output 1 2 1 8 9 zeman X 1 3 wire base w 4 20 mA output 5600 31 1x x 2 2 wire base w 4 20 mA output and Modbus GDX 350 H5 X 1 2 wire base 0601 311x x 8 2 wire base w 900 MHz wireless x 9 2 wire base w 2 4 GHz wirele
35. e replaced by following the procedure in Figure 1 3 Power switch SW 1 on the Battery PCB applies battery power to the RF monitor SW1 should be OFF if the monitor is to be out of service for long periods IMPORTANT Do not turn SW1 ON until the controller designated as Server is fully the Server controller IMPORTANT DO NOT ATTEMPT TO CHARGE THIS BATTERY OR REPLACE WITH operational and ready to communicate to the RF equipped GDX 30s Battery life is reduced if the RF equipped GDX 30 is on for long periods while unable to communicate to JE ANY OTHER THAN THE APPROPRIATE PART FROM BACHARACH 8 P N 5600 9001 Rev 2 GDX 350 Sensor Transmitter Main Power Switch Batt Replacement Procedure Disconnect battery cable if equipped Disconnect sensor cable connecting sensor head to monitor Remove two retaining clamp screws and remove clamp from battery OBSERVE CORRECT BATTERY POLARITY Replace old battery only with new lithium D Cell DO NOT ATTEMPT TO CHARGE BATTERY Re connect sensor cable P1 is not polarized Re connect battery P2 cable to Assy po OO N gt Battery Spade terminals NOO Cable to OEM Optional Smart Sensor Cable to RadioBoard Figure 1 3 Battery I O PCB 1 3 4 900 MHz RF Module The RF equipped GDX 350 s RF module mounts piggy back to the back of the Display assembly as shown in Figure 1 4 The MMCX RF connector connects to the antenna fitting s pigtail coax
36. e station s Data From menu to receive data from RF GDX 350s Each controller channel s Remote ID must match the GDX 350 s Remote ID setting in order for its VALUE to appear on the desired controller channel The GDX 350 counts value equals 75 counts or 15 696 during CAL MODE Enabling the GDX 350 s INPUT MARKER menu as shown on the right menu in Figure 5 12 causes the GDA 1600 controller to indicate IN CAL when the GDX 350 has its CAL MODE activated Input Reg set for VALUE means this GDA 1600 channel reads the GDX 350 s monitored gas value If the Input Req menu is set for BATT this GDA 1600 channel reads the battery voltage from the GDX 350 with the same Remote ID To properly display battery voltage the GDA 1600 s engineering unit range should be 0 5 00 VDC Even if this channel reads VALUE from the GDX 350 the battery voltage is displayed at the bottom of this GDA 1600 menu as shown in Figure 5 12 Channel KX Channel xx Channel xx Measurement Name INPUT DATA FROM INPUT MARKER Alarm 1 a WIRELESS RF Marker Enable Y Alarm 2 Min Raw nazaa Marker 15 62 Alarm 3 HaxRaw 1688 Mark Hs IN CAL Data From Remote ID 1 255 Sensor life H Linearize Marker Menu Conf igure Input Rea VALUE Battery 3 57u Entry Menu Wireless Monitor Marker menu Figure 5 12 GDA 1600 Base Station Data From Menu FIGURES 5 13 and 5 14 show correct settings for a GDA 400 base station to receive data from RF GDX 350s SYSTEM SETUP COMM SETUP RADIO SETU
37. eful when there are small amounts of background gases that cause fluctuating readouts above zero The highest amount of deadband allowed is 5 The 4 20 mA output is not affected by this menu item Default set to NO Causes negative values to read the Zero 0 value in data displays The CAL MODE readout displays negative values regardless of this setting and negative values below the Fault set point will still cause the Fault alarm to trip The 4 20 mA output always locks at 4 mA when the reading is negative Allows nonlinear signals to be linearized by entering the correct curve into the GDX 350 Figure 5 5 If Linearize is set for NO the CURVE POINTS menu data is not used and no linearization is applied When YES the CURVE POINT entries are used and a straight line approximation is calculated between each of the 9 entries 0 input always provides 0 output and 100 input always provides 100 output To prevent accidental data entry a special keystroke sequence of 4 consecutive UP keys is required to enter this menu CURVE POINTS Key Sequence PRESS Figure 5 5 Linearization Menu Description Allows users to store the entire current GDX 350 menu database into non volatile memory for restoration later in the case that incorrect values are accidentally entered or uploaded Restores the GDX 350 menu database to the values from the most recent Backup Configuration This menu item is only available if a smart sensor is n
38. ensor life bar graph updates after each SPAN calibration indicating when to replace old Sensors e Half hour trend screen shows rate of change of gas exposures e Modular design affords efficient installation and plug in sensors allow changing target gases even after installation e New smart sensors are recognized by the GDX 350 which prompts users to either upload new configuration data or continue with data from the previous smart sensor e Missing sensors trip the FAIL alarm e Compatible sensors are industry proven for fast response and long life 6 P N 5600 9001 Rev 2 GDX 350 Sensor Transmitter Engrg Units Bar Graph Engrg Units 30 Minute Trend HUE WW UP am alm Fail NEXT 18 pemH2S ALM RST UP ami 9 Ld O NEXT Radio Status Icons S2 Indicates sleep mode NEXT key Indicates Server In Range E toggles Ka Range status updates after each 4 t 5 6 readout ransmission 5 min s or 6 sec s IS Indicates Server Out of Range FFI H S lt Radio Receiving oo i EE E Radio Transmitting d Measurement Name n Indicates at some previous time e server was out of range Requires reset to Server In Range icon Low Battery indicator DOWN CAL LoBat Figure 1 2 Data Displays RF Version SHOWING Radio Status 1 3 The RF Transmitter and Client Server Wireless Networks Wireless transceivers utilize a FHSS Frequency Hopping Sp
39. ese routine transmissions allow the controllers to confirm a good wireless comm link even when no alarms exist If A1 or A2 alarms do exist during the sniff test the radio wakes receives the Server s beacon and transmits its data immediately The following list identifies each of the conditions that cause the radio to transmit e Every 5 minutes or faster depending upon Wakeup Time menu when there is no A1 or A2 alarm IMPORTANT The receiving controller reports Comm Error if the monitor does not reply for periods of greater than 18 minutes A3 and FAIL alarms do not increase radio transmission rates e Every 6 seconds if there is an A1 or A2 level alarm Upon entry into CAL MODE a 75 counts value 15 6 FS is transmitted Receivers indicate IN CAL when 75 counts is the input for a channel 200 to 1000 counts represents O to 100 of full scale e Upon ENTRY into CAL PURGE a 200 counts value 0 FS is transmitted NOTE To prevent A1 amp A2 low trip alarms oxygen ranges transmit 20 9 readings upon entry into CAL PURGE e Holding the magnet to the UP key for gt 8 seconds forces a transmission of the current reading value 1 3 3 RF BATTERY I O PCB WITH POWER SWITCH The RF electronics consists of the lower Battery I O PCB Figure 1 3 connected by a cable to the upper Display assembly with RF Module PCB Figure 1 4 The 3 6 volt lithium D cell battery will continuously power the unit for up to one year and may b
40. he GDX 350 and may be viewed on the SMART SENSOR information screen NewSensor Displays the date when a new sensor was last installed Recent Cal Displays the most recent calibration date 5 7 Clock Delay Setup The GDX 350 is equipped with a Real Time Clock and Calendar Time and Date and must be set to correctly match its location They are set at the factory in a 24 hour format but may require adjustment to match the location s time and date after shipment Follow the procedure in Configuration Using the Magnetic Wand in Section 5 2 on page 35 Warm Up and Cal Purge time delays are also available to prevent unwanted alarm trips Figure 5 10 shows the menu for these items CLOCK DELAY SETUP 77 B Time 12 35 42 Date 04 22 04 Warm Up Sec 12 0 Cal Purge Sec 10 0 Figure 5 10 Clock and Calendar Delay Timer Menu 5 8 Communications Setup RF Communications The Communications menu provides access to RADIO SETUP menus described below Hop Channel and System ID settings must match these settings in the Server Remote ID must be unique to each GDX 350 Items tagged with an asterisk affect power consumption and may have significant affects upon battery life EC INPUT PGI RADIO SETUP 90 MHZ RADIO SETUP 900MHZ RADIO STATUS System Config Hor Channel 1 32 server In Range or Alarm Settings ii Remote ID 1 255 Wakeur Time 388s No Server Found Sensor Information Sustem I
41. ive the server s beacon in order to communicate Correct planning and design of wireless systems are imperative for ensuring a successful installation It is highly recommended that a site drawing indicating location of monitors and base station line of site obstructions and sources of RF interference be submitted when requesting a quotation 1 3 1 Radio Status Icons Zzz s S IS Figure 2 1 shows the data displays and identifies radio status RS icons which appear on the LCD of RF configured GDX 350s RS icons along with the TXD led see Figure 1 2 are useful diagnostic tools for evaluating RF communication Status conditions indicated by the RS icon are Sleep Mode Zzz s Server In Range S server s beacon received at most recent attempt Server Out of Range server s en not received at most recent attempt Server Previously Out of Range and Low Battery kt The Server Previously Out of Range icon is useful in determining if intermittent communication failures are a result of this monitor having problems receiving the Server s beacon The duration and frequency of out of range conditions are stored in the Event Log table Low Battery conditions also flash the FAIL LED It is important to understand RS icons only update as the TXD LED flashes indicating an RF transmission has occurred The adjustable see Wakeup Time menu RF transmission rates are typically each 5 minutes but increase to each 6
42. le P N 5600 9001 Rev 2 13 GDX 350 Sensor Transmitter 1 7 Calibration Gas Part Number Gas Name Chemical Formula Concentration 25 LEL 1 8 System Design Specifications Category System Design Specification Supply Voltage 10 to 30 volts e With a typical 0 5 watt Bridge Sensor 100 mA nominal 24 VDC Power Consumption e Relays RS 485 Modbus Option Board 40 mA per relay 120 mA total with all 3 energized RS 485 use adds 20 mA Memory Non volatile E2 memory retains configuration values on power outages Loop 750 ohms maximum at nominal 24 VDC power Resistance Three configurable form C SPDT relays rated for 5 amp at 30 VDC or 240 VAC RESISTIVE Relay 1 and Relay 2 level alarms may be configured for HIGH or LOW trip for normally energized Failsafe or normally de energized and for latching or non latching Relays Optional Relay 3 is always normally energized for failsafe operation therefore loss of power to the GDX 350 will be indicated as a FAULT condition or motors may cause contact arcing which emits RFI into the sensor signals Use appropriate snubbers and MOVs across inductive loads and keep wiring away from signal CAUTION Relays are rated for RESISTIVE loads Inductive loads such as contactor coils wires 14 P N 5600 9001 Rev 2 GDX 350 Sensor Transmitter 9 General Specifications Category General Specifications Product Type GDX 350 transmitter monitor f
43. ners 2 P N 5600 9007 Rev 2 GDX 350 Sensor Transmitter TABLE OF CONTENTS iz SOO VV c S 5 1 1 Stand alone and Wired Networks AA 5 1 2 Seele 6 1 3 The RF Transmitter and Client Server Wireless Nebworks nenne nenn nennen 7 1 3 1 Radio Status Icons Zzz s ISl IS Fl Gi 7 1 3 2 RF Comm Cycle and Conserving Battery te 8 1 33 RE BATTERY I O PGB WITH POWER SWITCH gege Seege 8 1 34 900 MHZ ee Kleed 9 1 4 Safety Information Read Before Installation and Applying Power 10 1 5 orderning Ta tel ue EE 11 1 6 Replacement Parts and ACcessories nenne nenne nenne nnnnnnnne sensisse snas 13 1 7 CAINE ALONG AS ee EE 14 1 8 System DESIGN Weeer e EE 14 1 9 General SDCCIUCATOMNS EE 15 12102 lt SCHSOF el leen EE 16 2 INSTALLATION INSTRUC TIONS ii 2 ar 17 2 1 SEMSOMLOCALION eate ccs 17 2 2 Mounting TAG ENCIOSUG em err x 17 2 2 1 Stand alone and Wired Network 17 2 2 2 IRE VVIFCIESS NeDWOIKS EE 18 2 3 Transmission Range 4 20mA Signals c cccccsccceececsecceseeceseecaueecaueecseeeeseesaueesaeeesseeeees 20 2 4 Transmission Range RF Antenna Gonals nenne nennonennenenn nennen 20 2 9 Antenna Selection and Location ccccccccsscccssceceseecseeccseecaueecaueesaeeesseeseseesausesaueesseeeseeesees 21 2 6 Water Proofing Antenna Connection 22 022200 22000000 00000 nnnno nenne nennen nnne nenne ne
44. nnen nnne nnns 22 2 f SV SOM COMMA ING DEE 22 2 8 3 Wire 4 20 mA Mode Installation A 22 2 9 Alarms RS 485 Modbus Option Installaton nenne nenn nennen 23 2 10 Isolated 4 20 mA Output Option oie ee nee bu cst Messen 26 ZAG SEnSorlInStalalon EE 26 3 EE etlech 28 321 Model DEET 28 3 2 Initial Toxic Oxygen Sensor Monitor ZGtoart Up nenne nenn nennen 28 3 3 Initial Toxic Oxygen Sensor Monitor Span Check 28 4 OPERATING INSTRUCTIONS u nue Chu T cu PY cocer Ec Tace eoa ecu E ee CE ge E Dae us 29 4 1 Routine Sensor CallDratloris xt rope ooo En 29 4 2 Alarm lee EE 31 4 3 Alarm 3 Understanding Fault Level Operation cccccccccccceeceseeeeaeeeeeeeeseeeeseeeeseeeeaeenaes 31 5 SETUPMENU CONFIGURATION ebessen 33 5 1 Menus Database Configuration cccccccsecccseecssceceuceceueeceeeeceeceucecsueesaueesueeenaeessueesseeenaaes 33 5 2 Configuration Using the Magnetic Wand 35 DA System Configuration OTT 35 5 4 AE SOWING Str ae ea ee ee a ee ee 37 9 5 Relay Configuration If Eoumpped nenne nenne nnnnnnnne nenne nenne nennen 39 5 6 SNE la tel d e EE 39 5 7 Clock Delay SUN EE 40 5 8 Communications Setup RF Communications nenne nenne nenne nenne nennen 40 5 9 Base Statl hs a ee a ra eu 42 SIE cuire AD 43 95 11 ee M Tt 43 9425 HELP Screen uii neos m iata ue oa rM LII EI Oe ce En 44 P N 5600 9001 Rev 2 3 GDX 350 Sensor Transmitter 3 18 EE 44
45. oceed to the SPAN check Once ZERO CAL is successful the unit automatically proceeds to SPAN CHECK If NEXT is pressed now it will exit the CAL routine However if NEXT is pressed when first in CAL it will skip ZERO CAL and go to SPAN CHECK Apply the correct SPAN gas at 0 5 liters min After the reading is stable approximately 1 minute press the EDIT key to perform a SPAN calibration what the GDX 350 will indicate after a successful SPAN calibration The Cal Span Value may be edited if it becomes necessary to apply a different gas concentration see Cal Span Value in Section 5 3 on page 35 WARNING The SPAN gas used must match the value specified since this is o Once the SPAN calibration is successful the display flashes REMOVE CAL GAS and starts the CAL PURGE delay 6 CAL MODE will be complete after the end of the CAL PURGE delay 30 P N 5600 9001 Rev 2 GDX 350 Sensor Transmitter 4 2 Alarm Operation GDX 350s have front panel LED indicators for Alarm 1 Alarm 2 and Alarm 3 An optional Relay Modbus board P N 5600 0007 adds K1 K2 and K3 relays for these alarms CAUTION GDX 350 Alarm LED indicators function even without the presence of the 5600 0007 Relay option With 3 Wire 4 20 mA operation alarm LEDs flash when new and becomes steady after the operator selects ACKNOWLEDGE by pressing the UP RESET key 4 3 Alarm 3 Understanding Fault Level Operation The A3 alarm is typically dedicated
46. ocessing are not performed while using the keystrokes There are two Diagnostics menus useful for driving outputs without exposing the sensor to the target gas The OUTPUT SIMULATION menu allows for setting of the 4 20 mA output to virtually any desired value This is useful for checking responses of devices receiving the GDX 350 s 4 20 mA output The ACTIVATE RELAYS menu allows for tripping of the alarm relays if equipped without tripping alarm set points with the target gas WARNING DIAGNOSTICS r OUTPUT STIMULATOR Alarm processing will EDIT We Output Stimulation Out put 4 0 mA be halted during Relay Test diagnostic mode EDIT to change Next to exit EDIT to continue Any other key to exit m ACTIVATE RELAY B Relay 1 OFF Relay 2 OFF Relay 3 OFF Figure 5 17 Diagnostics Menus 5 14 RS 485 Modbus Setup The RS 485 MODBUS SETUP menu allows setting the RTU address if RS 485 equipped for each GDX 350 on the RS 485 network Each GDX 350 must have a different RTU address when communicating on the same 2 wire cable Baud rate parity and stop bits are fixed at industry standard values of e BaudRate 9600 e Parity None e Stop Bits 1 RS485 MODBUS SETUP B RTU Address 1 Baud Rate 9600 Parity None Stop Bit 1 Figure 5 18 Modbus RS 485 Setup Menu 44 P N 5600 9007 Rev 2 GDX 350 Sensor Transmitter 5 15 Modbus Register and Function Co
47. one and only reset when the UP RESET key is pressed from a data display Allows entering a maximum 10 second delay before this alarm becomes active ON Delay This is useful for preventing nuisance alarms caused by brief spikes beyond the set 38 P N 5600 9001 Rev 2 GDX 350 Sensor Transmitter 5 5 Relay Configuration If Equipped Relay Config has the submenu shown in Figure 5 8 The optional relay PCB must be installed to access this menu or a HARDWARE NOT PRESENT message appears RELAY CONFIG Bk Failsafe K2 Failsafe NO K2 Acknowledge NO K2 Refresh Of f K3 always Failsafe Figure 5 8 Relay Configuration Menu Menu Item Description Default set for YES Means that the relay de energizes during alarm and K1 K2 Failsafe energizes with no alarm This is useful for signaling alarm when GDX 350 power is lost K3 is a FAULT alarm and is always failsafe Default set for YES Means that the UP RESET key RESET key during either data display will set K2 to the normal state EVEN when an Alarm 2 condition exists This is useful for silencing an audible device driven from K2 during the alarm condition K2 Acknowledge Default set for ON Causes an acknowledged Alarm 2 condition to reactivate K2 if it continues beyond the designated Refresh interval 0 99 minutes This feature insures against forgotten alarms after an Acknowledge 5 6 Sensor Information Sensor Information has the SENSOR SETUP INFO menus
48. or various gases Coverage Single sensor 40 foot diameter 5 Indicator lights AL1 AL2 Fail In Cal and RS 485 TXD and RXD Front Panel 64 x 128 Pixel LCD graphic display for gas readings 30 minute trend bar graphing engineering units and backlight Instrument enclosure suitable for Class 1 Div 1 and 2 Gr B C and D Security mode Locks out critical parameters Calibration Non intrusive calibration 4 20 output Signal 3 wire 4 20 mA Max loop resistance is 750 ohms 24 VDC Three configurable form C SPDT relays rated for 5 amp at 30 VDC or 240 VAC RESISTIVE Relay 1 and Relay 2 level alarms are configurable for HIGH or LOW trip for normally energized Failsafe or normally de energized and for latching or non latching Alarm relays Relay 3 is always normally energized for failsafe operation so loss of power to the unit will be indicated as a FAULT condition Communications RS 485 Modbus optional 4 20 mA standard 55 to 60 C 67 to 140 F 5 to 90 RH non condensing Power 10 30 VDC oma zvo O oO CSA certified for Division 1 and 2 hazardous area installations for explosion proof Class 1 Groups B C and D and intrinsically safe GDX 350 EC 2 wire loops only Class 1 Groups A B C and D Designed to meet CSA C22 2 No 152 for Combustibles Monitors and ISA 92 0 01 Part 1 for Toxic Monitors excludes ammonia Ammonia is for use in non classified areas only ATEX CE EExd IIB H2 T5
49. ormally closed and C common or the pole These designators correspond to the shelf or de energized state of the relays The FAULT relay is always failsafe meaning it is energized when there is not a fault condition and therefore its action is reverse of the designators RS 485 Modbus networks should be wired as shown in Figure 2 10 Each GDX 350 connected represents an RTU and must have a unique RTU address RTU addresses are assigned in the Modbus setup menu described in Section 5 14 on page 44 Cabling must be a daisy chain as opposed to a star pattern for reliable operation The end of line unit should have J1 installed in the A position for terminating resistor installation All others should have J1 in the B position NOTE Front panel Rx Tx LEDs are helpful troubleshooting tools 24 P N 5600 9001 Rev 2 GDX 350 Sensor Transmitter Bum SNQPOW Sgy SH 0L z eunbia SSOIPPY Z SSOIPPY SSSJppy pueog uodo p eog uodo p eog uodo uonenuiuoo pjaius Aejoy wey Aejoy wey ejos UJe v 9 qeo JO JJSULUOD Ou SIE ZAL t ShgpolN SngpoWN SngpoWN Bui qeo edap 9AuJe Ay dw s o Ajjeujejur S za L O Sj28uuoo Z Zg 9 Ajjeuj9 jur v cgl 0 SJOSUUOS ZgL NLY au jo pue je juo UL IIE SU SHWO g Lf JojsiseJ buneuruuej SU siejsur V LL SsseJppe NIM enbiun e aney 0 NLY yore Jes 0 nuauu dnjes snapoyy esf L S9JON J9 O u02 Od Od Soa unigpsseippy 0000 V Sg8T
50. ot installed The special keystroke sequence of 4 consecutive UP keys is also required to perform backup and restore operations Allows manual uploading of the entire smart sensor database to the GDX 350 Upload Sensor Data from the smart sensor Allows setting of the 4 20 mA output value during ZERO and SPAN calibrations at a level to prevent alarm trips by calibration values Three wire models may be set from 0 to 20 mA P N 5600 9007 Rev 2 GDX 350 Sensor Transmitter Menu Item Description TX Sensor Life Default is set for YES Causes the GDX 350 4 20 mA output to transmit a sensor life value after successful calibrations during the CAL PURGE delay see Section 4 1 on page 29 Normal operation is such that the GDX 350 transmits 4 mA during the CAL PURGE delay But with TX Sensor Life YES it transmits 4 mA for the first 10 seconds then for 5 seconds transmits a value between 4 mA and 5 mA with 4 mA equal to 0 sensor life and 5 mA equal to 100 sensor life see Figure 5 6 The output then returns to 4 mA for the remainder of the CAL PURGE delay For example if after a calibration the sensor life is 75 the GDX 350 transmits 4 75 mA during the 5 second interval NOTE TX Sensor Life should always be set for NO unless the 4 20 mA receiver is capable of 5 4 interpreting the sensor life signal The Bacharach Inc GDX 1600 Controller is capable of this function 4mA for 10 seconds after Cal Exit Then 4 5mA fo
51. p EB NA P N 5600 9001 Rev 2 45 GDX 350 Sensor Transmitter 3 16 bit status words bit assignment for each channel See below ALARM1_BELOW BITO ALARM2_BELOW BIT1 ALARM3 BELOW BIT2 ALARM1 LATCH BIT3 ALARM2 LATCH BIT4 ALARM3_LATCH BIT5 ALARM3 ACTIVE BIT6 CHANNEL DISABLED BIT7 CHANNEL_CAL BIT8 CHANNEL LINEARIZE BIT9 FAULT RELAY LATCH BIT10 DISPLAY NEGATIVE BIT11 TRANSMIT SENSOR LIFE ENABLED BIT12 4 16 bit status word bit assignment for system status See below CH1 ALM1 BITO CH1 ALM2 BIT1 CH1 FAULT BIT2 CH2 ALAM1 BIT4 CH2 ALM2 BIT5 CH2 FAULT BIT6 K1 STATUS BIT8 K2 STATUS BIT9 K3 STATUS BIT10 5 16 bit status word bit assignment for system status See below CHAN 1 ACTIVE BITO CHAN 2 ACTIVE BIT1 SECURE LEVEL BIT2 MARKER Tx LED BIT3 K1 FAILSAFE BIT12 K2 FAILSAFE BIT13 K2 ACK BIT14 LOCK BIT15 6 16 bit signed integer ranging from 1 to 100 where 1 indicates Cal Required 7 16 bit integer ranging from 1 to 4095 scaled for 55 to 125 degrees C Memory Floating Point VARIABLE ALIAS READ FUNCTION CODE WRITE FUNCTION CODE NOTE Returned as 15 bit plus sign Ze complement with 5 over underrange applied Consider over underrange when scaling values to be displayed at the workstation The following equation may be used to determine a value for display Display Value MODBUS Value Span Value Zero Value 1 1 zero Value Span Value Zero Value 05 32767 46 P N 5600 9007 Rev 2 GDX 350 Sensor Tr
52. point WARNING Do not expose the GDX 350 to electrical shock or continuous severe mechanical shock WARNING Protect the GDX 350 from dripping liquids and high power sprays WARNING Use only for applications described within this manual CAUTION Do not paint the sensor assembly or the transmitter CAUTION For safety reasons this equipment must be operated and serviced by qualified personnel only Read and understand instruction manual completely before operating or servicing P N 5600 9007 Rev 2 GDX 350 Sensor Transmitter 1 5 Ordering Information Transmitter Part Description Number Options X 1 3 wire base w 4 20 mA output 5600 301x x 2 3 wire base w 4 20 mA output and Modbus GDX 350 CO X 1 2 wire base 5601 301x x 8 2 wire base w 900 MHz wireless x 9 2 wire base w 2 4 GHz wireless x 1 3 wire base w 4 20 mA output 9600 302x x 2 3 wire base w 4 20 mA output and Modbus GDX 350 H2S x 1 2 wire base 5601 302x 9600 303x GDX 350 O 9601 303x 9600 304x GDX 350 NO 9601 304x 9600 305x GDX 350 NH3 9601 305x 9600 306x GDX 350 SO 9601 306x P N 5600 9007 Rev 2 1 x 8 2 wire base w 900 MHz wireless x 9 2 wire base w 2 4 GHz wireless x 1 2 wire base w 4 20 mA output x 2 3 wire base w 4 20 mA output and Modbus x 1 2 wire base x 8 2 wire base w 900 MHz wireless x 9 2 wire base w 2 4 GHz wireless x 1 3 wir
53. r 5 seconds Sensor Life Value J 4mA 0 life 5mA 100 life Bu 4mA Monitoring Monitoring Cal Marker Adjustable Calibrating Cal Delay Figure 5 6 Transmit Sensor Life Timing Diagram Alarm Settings The Alarm Settings page has the Alarm 1 2 3 Setups Relays and Event Log submenus shown in Figure 5 7 Alarm 1 Alarm 2 and Alarm 3 Fail menus are identical and therefore described only once in this section Relay Modbus P N 5600 0007 option installed dk IMPORTANT Alarm functions and their associated LEDs are active without the P N 5600 9001 Rev 2 37 GDX 350 Sensor Transmitter Alarm 1 2 3 menus are identical ALARM SETTINGS ALARM x SETUP RELAY CONFIG Balarm 1 gt Bset Point 20 Wek1 Failsafe NO Alarm 2 gt Dead Band 1 K2 Failsafe NO Alarm 3 Fail gt ON Delay Os K2 Acknowledge NO Relays Config gt OFF Delay Om K2 Refresh Of f Alarm Event Log gt Low Trip NO K3 always Failsafe Latching EVENT LOG Edit 08 12 04 03 17 A1 IN 08 13 04 02 18 A3OUT B Display Event Log 08 12 04 03 51 A2 IN END OF LOG Clear Event Log 08 12 04 03 55 ACK 08 12 04 04 16 A20UT 08 12 04 04 23 A1OUT 08 12 04 15 00 A1 IN 08 12 04 16 43 A10OUT 08 13 04 02 08 A3 nV Alarm 1 2 3 menus are identical ALARM SETTINGS ALARM x SETUP i Alarm i BW Set Point 26 Alarm 2 Dead Band r Hlarm 3 Fail ON Delay as Alarm Event
54. read Spectrum Server Client network where multiple clients synchronize their frequency hopping to a single server The Server transmits a beacon at the beginning of every frequency hop 50 times per second Client transceivers listen for this beacon and upon receiving it synchronize their hopping with the Server Since RF GDX 350s are powered by a small battery much care is taken to reduce power consuming RF transmissions to a minimum For this reason RF configured GDX 350s are unsuitable for Server operation and are always Clients Each GDX 350 wireless broadcast includes 10 bit monitored gas value battery voltage and a status byte This proprietary wireless protocol interfaces only to GDA 400 and GDA 1600 controllers Controllers are capable of functioning as Clients or Servers but only one Server is allowed per wireless network Multiple controllers may receive the same transmissions from RF configured GDX 350s but only one controller per wireless network may be configured as the Server Each transceiver on a wireless network must have its RADIO SETUP menus configured to share the same Hop Channel 0 32 and System ID 0 255 in order to communicate There should never be two servers with the same Hop Channel System ID settings in the same coverage area as the interference between the two servers will severely hinder RF communications The Server must be in a powered location and should be centrally located since all Clients must rece
55. rification or bump test should be performed after installation Apply an upscale gas value of at least 25 of full scale to the sensor For example if 0 100 ppm H5S is the measurement range apply at least 25 ppm but not more than 100 ppm Remember that this is only a coarse check and precision calibrations are performed in Routine Sensor Calibrations described in the following Section 4 1 28 P N 5600 9007 Rev 2 GDX 350 Sensor Transmitter 4 OPERATING INSTRUCTIONS 4 1 Routine Sensor Calibrations Calibration is the most important function for ensuring correct operation of the GDX 350 The CAL MODE flow chart shown in Figure 4 2 is designed to make calibration quick easy and error free The 4 20 mA output indicates CAL MODE by transmitting 1 5 mA for 3 wire installations It then transmits 4 mA during the subsequent CAL PURGE delay to prevent external alarms during calibration Local GDX 350 alarm relays if equipped are inhibited during CAL MODE CAL MODE automatically exits if no keystrokes are detected after 5 minutes Optional Remote Optional Cal Cup Calibration Adapter Process Cover Splash Guard or 0 5 Liter Min Flow Regulator Figure 4 1 Calibration Gas Input P N 5600 9001 Rev 2 29 GDX 350 Sensor Transmitter Follow these GDX 350 calibration guidelines e Calibration accuracy is only as good as the calibration gas accuracy Bacharach Inc recommends calibration gases with NIST National In
56. s air movement gas density in relation to air emission sources and environmental variables affect correct sensor location Air movement by fans prevailing winds and convection should be carefully evaluated to determine if a leak is more likely to raise gas levels in certain areas within the facility Vapor density of a gas determines if it will rise or fall in air when there are no significant currents Lighter than air gases should have the monitors mounted 12 18 inches 30 45 centimeters above the potential gas leak and heavier than air gases should be the same distance below the point of leakage Even though the GDX 350 is designed for rugged service sensors should be protected from water snow shock vibration and dirt 2 2 Mounting the Enclosure 2 2 1 Stand alone and Wired Networks The GDX 350 standard enclosure is a cast aluminum explosion proof NEMA 7 enclosure as shown in Figure 2 1 Dimensions in inches 4 61 34 N P T Hub 2 Places Universal Sensor Head Figure 2 1 GDX 350 Explosion Proof Housing Modular design simplifies the installation of the GDX 350 A top Display Assembly is mounted with captive thumbscrews and is easily removed to access field wiring terminals An optional Alarms Modbus board P N 5600 0007 mounts piggyback to the back of the Display Assembly The enclosure is equipped with two threaded 3 4 inch NPT conduit fitting outlet and pre drilled mounting flanges WARNING Qualified personnel sho
57. s up to 1500 feet but obstructions should be kept to a minimum 18 P N 5600 9001 Rev 2 GDX 350 Sensor Transmitter WARNING Qualified personnel should perform the installation according to applicable electrical codes regulations and safety standards Ensure correct cabling and sealing fitting practices are implemented Install the GDX 350 to a wall or bracket using the predrilled mounting flanges with I D 0 25 on 5 0 inch centers Figure 2 3 CAUTION The sensor head not shown in Figure 2 3 should never be installed pointing upwards The RF enclosure is NRTL certified for Division 1 hazardous area installations for explosion proof Class 1 Groups B C D see Figure 2 3 The RF version of the GDX 350 is designed to meet ISA 92 0 01 Part 1 for Toxic Monitors The standard RF antenna fitting has an RP SMA connector and is suitable for Division 2 classified areas An optional antenna is also available for Division 1 classified areas Figure 2 4 shows both antenna styles Dipole Antenna Straight R SMA Dipole Antenna Explosion Proof Antenna Bushing va RP SMA 3 Mtg holes 2 places 3 4 NPFT HUBS 3 places Division 2 Compliant Division 1 Compliant Figure 2 3 GDX 350 RF Version with Explosion Proof Housing Figure 2 4 Local Antennas 900MHZ Shown Bacharach offers a square aluminum plate with a magnet on each corner to bolt to the back of the GDX 350 s instrument enclosure The Magnetic Mo
58. ss 1 2 1 2 1 2 1 2 3 wire base w 4 20 mA output and Modbus 12 P N 5600 9001 Rev 2 GDX 350 Sensor Transmitter 1 6 Replacement Parts and Accessories Part Number Description 5600 0004 GDX Calibration Cup Sample Draw Adaptor 5600 0003 GDX Splash Guard Remote Cal Cup 0024 7059 Calibration Kit Regulator Tubing and Carrying Case no gas included 5600 5010 CO Uncalibrated Sensor Module 5600 6010 CO Pre Calibrated Smart Sensor Module 5600 5020 HS Uncalibrated Sensor Module 5600 6020 HS Pre Calibrated Smart Sensor Module 5600 5030 O5 Uncalibrated Sensor Module 5600 6030 O5 Pre Calibrated Smart Sensor Module 5600 5040 NO Uncalibrated Sensor Module 5600 6040 NO Pre Calibrated Smart Sensor Module 5600 5050 NH Uncalibrated Sensor Module 5600 6050 NH3 Pre Calibrated Smart Sensor Module 5600 5060 SO Uncalibrated Sensor Module 5600 6060 SO Pre Calibrated Smart Sensor Module 5600 5070 PH Uncalibrated Sensor Module 5600 6070 PH Pre Calibrated Smart Sensor Module 5600 5200 CH CAT Uncalibrated Sensor Module 5600 6200 CH CAT Pre Calibrated Smart Sensor Module 5600 5210 CH IR Uncalibrated Sensor Module 5600 6210 CH IR Pre Calibrated Smart Sensor Module 5600 5220 CO Uncalibrated Sensor Module 5600 6220 CO Pre Calibrated Smart Sensor Module 5600 5110 Ho Uncalibrated Sensor Module 5600 6110 H Pre Calibrated Smart Sensor Module 5600 5330 CsHs Uncalibrated Sensor Module 5600 6330 CsHs Pre Calibrated Smart Sensor Modu
59. stitute of Standards and Technology traceable accuracy to increase the validity of the calibration Do not use a gas cylinder beyond its expiration date Calibrate a new sensor before use Allow the sensor to stabilize before starting calibration approximately 5 minutes Calibrate on a regular basis Bacharach Inc recommends once every 3 months depending on use and sensor exposure to poisons and contaminants e Calibrate only in a clean atmosphere which is free of background gas Use the following step by step procedure to perform ZERO and SPAN calibrations The flow chart in Figure 4 2 illustrates the following procedure UP CAL NEXT and EDIT labels indicate keystrokes using the magnetic wand The CAL MODE information screen located on the top of the chart is available for advanced users to see Offset Gain calibration constants and live analog to digital converter A D counts Span Gas calibration values may also be edited from this screen Holding the UP key for 5 seconds during CAL MODE displays this screen Calibration history records are logged and may be viewed in the Sensor Information menu see Section 5 6 on page 39 ZERO and SPAN Calibrations Using the Cal Cup apply a clean ZERO gas or be sure there is no background target gas in the monitored area After the reading is stable approximately 1 minute press the EDIT key to perform a ZERO calibration If the ZERO calibration is successful press the NEXT key to pr
60. ta or continue with data from the previous smart sensor e Sensors are industry proven for fast response and long life P N 5600 9001 Rev 2 5 GDX 350 Sensor Transmitter 1 2 RF Wireless Networks IMPORTANT This section describes GDX 350 RF toxic oxygen monitors equipped with the RF Wireless Interface and RF firmware This battery powered device has no external power or signal wiring and is limited to self powered electrochemical sensors for toxic and N oxygen measurements Gas values are displayed in their engineering units as well as graphically as bar graphs or 30 minute trends Flashing front panel LEDs notify personnel when alarm levels have been reached Periodic calibration checks are needed to assure dependable performance The RF version of the GDX 350 functions on a license free 900MHz or 2 4GHz wireless Client Server networks and transmits monitored data to GDA 400 and GDA 1600 controllers Controllers must be equipped with the matching RF wireless modem and appropriate antenna to receive the transmissions Up to sixteen GDX 350 wireless monitors may communicate to one GDA 1600 and up to four to a GDA 400 Wireless networks requiring more than 16 points may consist of multiple controllers Advanced microcontroller electronics and superior graphic LCD operator interface offers enhanced diagnostics and fault analysis not possible in competing products Non volatile memory retains all configuration data during power interruptions
61. to FAULT conditions indicating sensor failures or out of measurement range conditions However some applications require a third level alarm The A3 menu is identical to A1 and A2 and may be set to trip at an upscale level value A3 will also trip with missing or failed sensors regardless of the level value true even with A3 configured as a level alarm and it must be realized that A3 level alarm CAUTION Missing or failed sensors always trip Alarm 3 and relay K3 if equipped This is events might be caused by the monitored level or by a missing or failed sensor P N 5600 9001 Rev 2 31 GDX 350 Sensor Transmitter Swen ZUSWauNnseayp LLL 131 H 3417 Josuss TH 4ssaoons 193 Weds Snua pue eys MO apoy eD Z p ounbis 109 S 390 40933 UH Weds 103434 shg ID 3n l3 MO I2 NVdS 31 LIC Spuooes G JO MOUS sie 129 NVdS 41 In4222822n5 lda 0432 b 390 304943 Wha 043z JOS 103434 MO led Spuooes G JO MOUS ONIZ 4I LIC sie 129 OM3Z 41 epo 71H23 LIXI LXIN NHdS 395 09 1193 S41una gurpesa4 ant s4run3 AV Idi VIVO 0 9289 Tans Alado A3 LXAN epo 71H23 HHdS lX3N 0432 395 09 1193 S41unes gurpeaeJ anti SLL UD mn Alday oes G Ae AN PIOH Osuas yi ebpug YUM you sjuejsuoo UIES J9SYO ees oj pue njea SYD NWdS eBueuo oj esn 3 xxxx u99J9S Oju
62. uld perform the installation according to applicable electrical codes regulations and safety standards Insure that correct cabling and seal N fitting practices are implemented Install the GDX 350 to a wall or bracket using the predrilled mounting flanges with I D 0 25 on 5 5 inch centers Figure 2 1 If conduit is rigid and able to support the weight of the GDX 350 the mounting bolts may be omitted WARNING The sensor should never be installed pointing upwards P N 5600 9001 Rev 2 17 GDX 350 Sensor Transmitter O Housing A 2 Wire 4 20mA TB1 Terminals Power Signal Terminals Terminals Isolated ModBus Smart Cat Bead 4 20mA Output Option Alarm Option Sensor Suppl V0 SC Connector Options mount piggy back to upply req d for DisplayAssy Both require Cat Bead or Alarm option I O Power Supply Smart Sensor Head oOo N IN E Optional Remote Calibration Adapter Zn u Splash Guard Optional Cal Cup Process Cover Figure 2 2 Outline Drawing Stand alone and Wired Version 2 2 2 RF Wireless Networks The standard enclosure for the RF version of the GDX 350 is a cast aluminum explosion proof NEMA 7 enclosure as shown in Figure 2 3 Modular design simplifies the installation The RF antenna should typically be mounted with line of site access to the controllers base station antenna If a good line of site angle is not possible the GDX 350s will usually still function properly at range
63. unt securely attaches the assembly to solid steel structure that is at least 6 inches wide P N 5600 9001 Rev 2 19 GDX 350 Sensor Transmitter Housing __ Display Assy Main Power Switch Cable to Battery I O Board Smart electro chemical sensor input RF Wireless Module Battery mounts piggy back to Up PCB Display Assy Figure 2 5 Outline Drawing RF Network Version 2 3 Transmission Range 4 20mA Signals The distance 4 20 mA signals can travel is dependent upon several factors including the cable gauge DC power supply voltage level and input impedance of the receiving device Note GDX 350 Controllers have 4 20 mA input resistance of 100 ohms 2 4 Transmission Range RF Antenna Signals The distance radio signals can travel is dependent upon several factors including antenna design transmitter power and Freespace losses In order for a wireless link to work the available system operating margin TX power RX Sensitivity Antenna gains must exceed the Freespace loss and all other losses in the system For best RF line of site the combined_height of both antennas must exceed the Fresnel zone diameter see below Distance Between Antennas Fresnel Zone Diameter Freespace Loss dB 1000 t G00 m IRAS m ile 1 8 kn term 8 5 mies km 68 20 7 m 0 miles 16km 55 29m 20 P N 5600 9001 Rev 2 GDX 350 Sensor Transmitter Example The RF radio modem has the following parameters
64. vels of menu items All SETUP menu items have at least one page of sub menus Items with sub menus are indicated by the gt symbol right arrow at the end of each line Edit menu items by pointing to them pressing the EDIT key to display the cursor pressing UP DOWN to change that character pressing NEXT to move the cursor pressing EDIT again to load the new item and remove the cursor Press NEXT to exit the sub menu To view SETUP PAGE 2 press the DOWN key with the pointer aimed at the bottom item on PAGE 1 LEL INPUT 1 LEL INPUT 2 A Wesystem Config B LCD Contrast Adj gt Alarm Settings Modbus RS485 Port gt Sensor Information EDIT Security gt Clock Delays Technicians ONLY gt Diagnostics HELP Instructions Firmware Rev qa Sensor Temp menu only present with Arctic smart sensor installed See section 7 1 Figure 5 3 Setup Menu Entry 5 3 System Configuration Menus The System Config group consists of two pages of menus as shown in Figure 5 4 Each item s description follows in this section SYSTEM CONFIG PG 1 SYSTEM COHFIG FG 2 A Piessurement Hame 16 BS Readout Deadband 8 Eunits BAAAAAASAA IO Track Negative NO Zero CHA Eunits en Data V ac EUR Ort 14 x E oe pies Restore available only Cal Sean Ual SA Cal Marker 3 88mA without smart sensor installed T Sensor Life Upload available only zwei e with smart sensor installed Figure 5 4 System

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