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Bacharach GDA-400 Owner's Manual

1. 14 3 2 2 Channel Setup Entry dieere re e HR ro ARE UR 14 3 2 3 Fault Alarm 1 Alarm 2 Alarm 3 Set Up 14 3 2 4 Configure Menu to Define Channel eee 15 3 2 4 1 Name EUnits ASCII Data 5 16 3 2 4 2 Input Measurement Range ee eee eee eee eee eee eee 16 3 2 4 3 Decimal Point Resolution sees eee eee eee 16 3 2 4 4 Turning Off Unused Channels sss sese sese eee 16 3 2 5 5 Rm 17 3 26 Calibrate Input oett eta ee hen derent aer xe EUR o Te iae HK AER eee tudin 17 3 3 System Configuration Menus sese eee eee eee 18 3 3 1 Standard Optional Relay Setup Menus 19 3 3 2 Relay 2 ACK Acknowledge Horn Setup 20 3 3 3 Clock Delays Menu tee ere Ur ed e 20 3 3 4 Communications Menu esse ss ssss sees esse sees eee seer eenn 21 3 3 5 Analog Setup MON THT 21 3 4 System Security eene che eaae ne o cae rae aeuo ge che 22 4 DISPLAY TO DEVICE enne then antt essa ssh essa sese esos stessa assess sse sees 23 4 1 Motherboard Interface PCB cccsscc
2. 58 1 25 EngraUnits LEL CH4 28 9 6 Dxpseno eem pO nits Hold UP key 5 sec to enter CAL Sra CAL MODE info screen Press CAL key e Ed 2 ue Use to change SPAN GAS value 1 8 to view Offset Gain constants and SELECT NEXT Return to ca OPServe live counts reading channel 3 wectannel 3 Hold UP key 5 sec Hold UP key 5 sec Back to DATA EDIT to Select DISPLAY selectch tocaL APRIS AFF ly SVAL 58 1 25 then press EDIT Eun its NEXT KEY Eun its NEXT REMOVE Ensraunits LEL CHa M tive readins cunits d 9 CAL GAS EDIT to Set ZERO Ve ce E NEXT SPAN CAL Mode NEXT EXIT CAL Mode Pn S EDIT ETT IT ZERO Cal Fails IFZERO Cal OK If SPAN Cal Fails If SPAN Cal OK ns y show for 5 seconds show for 5 seconds SPHH CAL L CAL ies Successful Limit Exceeded Successful see Figure 3 6 Calibration Procedure Flow Chart 3 3 System Configuration Menus Several items needing configuration are not specific to either channel but affect the entire GDA 400 system These are located in the SYSTEM menus group shown in the dotted line box in Figure 3 0 System menus are accessed through the System SETUP menu shown in Figure 3 7 by pointing to the desired item and pressing EDIT 18 Instruction 5700 9000 GDA 400 4 Channel Controller SYSTEM SETUP BS Relay Setur Hck Horn Set up Clock Belays Communications InFut
3. 37 6 4 Wireless Modbus Slave Modenas n e a aee aie e a i aaae iar EREET Ee 37 6 5 ea Ee T EA EE EE et te ette E NE E A 38 6 5 1 Dipole and Collinear Antennas css eee eee 38 6 5 2 Yagl Anitehn nias fs veces d eie qe teg or densi ce ai exe coda oa orsa 38 6 5 3 Mounting Near Other ANtennas ccccccccccccsssssscececececsesssaeseeececsesesaeseeeesceeseeaeeeseeeees 39 6 5 4 Coax Cables sir os mr tetro Ee os RAE codes ERAT DU EFC er PER Ra FERAIS 39 6 6 Surge Protection and Grounding sss esse see eee eee eee 39 6 6 1 Antenna Grounding zassiieeies ie eter er ea tet t eve RARUS 40 6 6 2 Connections to Other Equipment sss eee ee eee eee eee 40 T SERVICE CENTERS weccscditececcsiscccssdectceconsbecessdidedecsvenccedsdedevecsvescvessvededecstencsessvelevecavencvedsvedavecssesetedstetese 41 Instruction 5700 9000 GDA 400 4 Channel Controller 1 Important Safety Issues The following terms and symbols are used in this manual to alert the operator of important instrument operating issues WARNINGS gt This symbol is intended to alert the user to the presence of important operating and maintenance servicing instructions This symbol is intended to alert the user to the presence of dangerous voltage amounts within the instrument enclosure that may be of sufficient magnitude to constitute a risk of electric shock This symbol signifies the system s ground termina
4. utrut S5Setur Track Hegsative Figure 3 7 System Setup Menu 3 3 1 Standard Optional Relay Setup Menus The menu shown in Figure 3 8 allows for configuring of both the standard Relay 1 and Relay 2 motherboard relays and the six optional relays on the discrete relay option PCB P N 5700 0015 Both standard and optional relays are programmed in this menu Select the relay to be configured by pointing the arrow at the top menu item and pressing EDIT The field will scroll through all eight possible relays 2 standard and 6 optional RELAY SETUP Standard Felay B Fault Votes Alarm 1 Votes Alarm 2 Wotes Alarm 3 Wotes Failsafe Quer Ride Ge LD G Kk NU Ch1H2 Figure 3 8 Relay Setup Menu Fault Alarm 1 Alarm 2 Alarm 3 menus in Figure 3 8 offer additional voting flexibility by controlling the channel alarm combinations that will trip the selected relay Each Votes entry requires this quantity of channels for each type alarm be active before this relay is activated As illustrated in Figure 3 8 Standard Relay 1 activates when any 2 channels have Alarm 1 conditions while in addition any one channel has an Alarm 2 condition And since the Over Ride menu see description below contains the Ch1A2 entry Standard Relay 1 also activates if alarm 2 on channel 1 trips Fault Votes and Alarm 3 Votes values are 0 therefore Fault and Alarm 3 conditions will not affect this relay Votes f
5. The Measurable Difference GDA 400 4 Channel Controller Instruction 5700 9000 Installation Operation Maintenance Rev 1 September 2012 Product Leadership Training Service Reliability GDA 400 4 Channel Controller Instruction 5700 9000 WARRANTY Bacharach Inc warrants to Buyer that at the time of delivery this Product will be free from defects in mater ial 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 one 1 year 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
6. menus and all configuration data is retained in non volatile memory during power interruptions The GDA 400 front panel is shown in Figure 2 0 displaying the bar graph data screen The five button symbols below the display are magnetically activated using the supplied magnetic wand without opening the enclosure Opening the enclosure door provides access to the touch keypad as shown in Figure 2 1 GDA 400 Gas Alarm Controller COMMON LEVEL STATUS ALARMS LED s CIF NM 5 5 LEL CH4 L CAL IN PROGRESS 7 Oxygen 1 co o Magnetic Keypad Es Keypad buttons behind door Figure 2 0 Front Panel GDA 400 4 Channel Controller Instruction 5700 9000 P2 Programming Header Common Alarm Level LED s LED Indicators ALARM 1 3 m 1 KEYPAD Enaraunits Al ALARM 2 CAL IN PROGRESS 28 9 ALARM 3 Oxygen FAULT ALARM Quad Screen Shown NEXT key to cw LCD Contrast display Bar Graph or Trend screens adjustment SW1 SW5 are the magnetic keypad allowing operator interface w o opening the enclosure Touch key access requires opening the enclosure UP DOWN NEXT EDIT RESET CAL Figure 2 1 Touch Keypad 2 1 Data Display Screens The GDA 400 Controller offers three modes for displaying monitored data Each is shown in Figure 2 2 Engrg Unit Screen Bar Graph Screen Ch Trend Screen 38 1 Engraunits Chx
7. 38 CO 38 1 25 EngrauUnits CH4 FAULT LEL CH4 Press Next Press Next returns RI FL Press Next L L S to scroll Ch to EUnit Screen 280 9 Dxygen Trend ee Screens Oxegen rem CO foal Fem CO R2 AL Engrg Unit Screen has flashing alarm Bar Graph Screen has lines across Trend Screen shows most recent 30 icons for Al H2 FL fail bars to graphically indicate monitored minutes trend one channel per screen Menu Item in the SYSTEM group values relative to their alarm set points Press NEXT key to advance to next controls if these reading display or channel Alarm levels shown as block negative values dashed lines across each screen Figure 2 2 Engineering Unit Screen 2 1 1 Engineering Unit Screen The GDA 400 Engineering Unit screen shown in Figure 2 2 allows each channel s value and its 10 digit Eunits tag to be viewed simultaneously A2 and FL icons at the lower right of each reading flash if ALARM 1 2 3 or FAULT alarms have activated for this channel 2 1 2 Bar Graph Screen Values are displayed graphically as bar graphs with alarm levels indicated by vertical dashed lines across each bar The bar graph screen is useful for emphasizing current reading relative to the channel s alarm set point Live readings and their Eunits appear above each bar graph Instruction 5700 9000 GDA 400 4 Channel Controller 2 1 3 Trend Screen The GDA 400 al
8. 4 GHz Radio Modem 900 MHz Radio Modem Figure 6 1 35 GDA 400 4 Channel Controller Instruction 5700 9000 6 2 RADIO SETUP MENU Radio modules must be connected to the GDA 400 s radio option board for RADIO SETUP Pressing the EDIT key with the arrow pointing to the Communications menu brings the COMM SETUP menu to the screen With the arrow pointing at Configure Radio press enter again to enter the RADIO SETUP menu Figure 6 2 e Hop Channel may be set from 1 32 using the GDA 400 keypad and assigns the pseudo random radio frequency hopping pattern A transceiver will not go InRange of or communicate with a transceiver operating on a different Hop Channel e System ID may be set from 1 255 using the GDA 400 keypad and is similar to a password character or network number and makes network eavesdropping more difficult A transceiver will not go InRange of or communicate with a transceiver operating on a different System ID e Mode may be set for CLIENT or SERVER For a single GDA 400 communicating to up to four battery powered GDX 350 RF transceivers Mode must Server To prolong battery life GDX 350 RF s sleep most of the time and therefore may not be Servers If an application calls for multiple GDA 400 locations only one may be set for Server and all others must be Clients This single Server transmits a beacon which all of the network s Clients synchronize to ONLY ONE SERVE
9. ARE EXCLUSIVE AND ARE GIVEN AND ACCEPTED IN LIEU OF ANY AND ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND 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 isa registered trademark of Bacharach Inc All other trademarks trade names service marks and logos referenced
10. Analog Setup Menus 3 4 System Security Menu A 4 digit Pass Code entered and confirmed in this menu item locks all menus Viewing menus is not denied but attempts to edit variables flashes the Locked message on the LCD Authorized individuals locking the system should first enter a name phone or other contact information into the 12 character field on the top line of the Security screen To lock or unlock the system the correct 4 digit authorization number must be entered into the Pass Code field It is very important to remember the 4 digit code since the factory must be consulted if it is lost SYSTEM SECURITY Contact Pass Code Unlocked Figure 3 13 System Security Menu 22 Instruction 5700 9000 GDA 400 4 Channel Controller 4 Display to Device Connections 4 1 Motherboard Interface PCB The GDA 400 Motherboard shown below in Figure 4 1 is the interface between the Display CPU assembly and all other system I O devices The Display CPU assembly attaches to the motherboard with 4 standoffs and connects via ribbon cable to S1 Input options described in sections 4 1 1 and 4 1 2 are available that may be installed into the Input Option P1 connector located on the lower left side of the motherboard The middle position P2 connector is for the 4 20mA Output option P N 5700 0019 and the right position P3 connector is for the Discrete Relay option P N 5700 0015 Other optional devices such as
11. C N uc L RET Z r s L2 GND 100 240 VAC DRY CONTACTS TB4 5 amp resistive SPDT form C dry contact relay outputs Use appropriate diode snubber devices when switching inductive loads Universal 100 240VAC Important GND terminal 3 must be tied to earth for correct shielding of incoming signals HAZA RISK OF ELECTRICAL SHOCK RD A SHOCK DISCONNECT OR TURN OFF POWER BEFORE SERVICING THE EQUIPMENT Figure 4 1 Motherboard 4 2 Input Output Optional PCBs P1 P2 and P3 connectors on the motherboard offer unique positions for I O options described in this section A screen appears briefly after power up indicating which I O options are connected The P1 position accepts either the 4 Analog Input option P N 24 Instruction 5700 9000 GDA 400 4 Channel Controller 5700 0014 or the Bridge Sensor Input option P N 5700 0020 Both have default Input Min Max menu see section 3 3 4 settings of 400 2000 counts P2 is reserved only for the 4 20mA Output option P N 5700 0019 and P3 is reserved only for the Discrete Relay option P N 5700 0015 Connector locations relative to each option s mounting screws prevent incorrect installation 4 2 1 Optional Analog Input PCB 5700 0014 IMPORTANT This PCB P N 5700 0014 may only be installed into motherboard position P1 Analog input PCB option P N 5700 0014 shown in Figure 4 2 allows for interfacing GDA 400 s to field transmitters having 4 20
12. Quad 4 20mA output card 5700 0017 RS 232 RS 485 Modbus RTU output card 5700 0029 50 Watt Power Supply 5700 0030 120 Watt Power Supply 5700 0032 900MHz wireless kit w dipole antenna 5700 0033 2 4GHz wireless kit w collinear antenna 5700 0040 900MHz antenna base station collinear 5700 0041 2 4GHz antenna base station collinear 5700 0042 900MHz antenna dipole 5700 0043 2 4GHz antenna collinear 5700 0044 900MHz antenna Yagi 5700 0045 2 4GHz antenna Yagi 5700 0046 Antenna lightning protector 5700 0047 N to RP SMA connector adapter 5700 0048 15ft LMR 195 N type male to RP SMA male cable 5700 0049 75ft RP TNC low loss coax antenna cable 5700 0050 50ft RP TNC low loss coax antenna cable 5700 0051 25ft RP TNC low loss coax antenna cable 5700 0052 15ft RP TNC low loss coax antenna cable 11 GDA 400 4 Channel Controller Instruction 5700 9000 3 Basic Operation The GDA 400 s graphic LCD displays monitored data which in combination with the 5 button keypad serves as the system s operator interface All GDA 400 configuration variables are entered with this operator interface using SETUP menus accessed by pressing EDIT from either data screen This Setup mode may be exited manually by pressing NEXT or automatically when no keys are pressed for 5 minutes Alarm relays and front panel alarm LED indicators remain active during the Setup mode Alarm LED s flash upon new alarms and become steady after Acknowledged by pressing
13. be as long as 120 minutes Delays are useful in many applications to prevent nuisance alarms and unwanted cycling into and out of alarm conditions e Low Trip is set for NO for increasing alarms or YES for decreasing alarms to determine if the alarm activates upon exceeding or falling below the set point e Latching determines either manual or automatic alarm reset operation YES requires a manual Alarm Reset to unlatch the alarm even though an alarm condition no longer exists YES also causes this alarm s common relay front panel LED and optional discrete relay to latch NO allows all outputs for this alarm to automatically reset after the alarm condition clears Common alarm LED indicators on the left side of the front panel indicate the status of Al A2 and A3 alarms The common Fault LED is on the lower right side of the front panel Any new alarm event causes the associated LED to flash until an Alarm Reset occurs causing an acknowledged steady on condition Operators should recognize new alarms by a flashing LED Alarm Reset also acknowledges or deactivates audible devices driven by the AUDIBLE ALARM option connector J2 see Figure 4 1 3 2 4 Configure Menu to Define Channel The channel setup menu proceeding after the alarm menus is CONFIGURE It allows setting Name and EUNIT 10 digit ASCII fields defines the measurement range with ZERO and SPAN entries number of Decimal Points of resolution the reading will have and whether or not
14. on the sensor Gain settings for each jumper position are as follows no jumpers 1 LO 7 MED 12 24 Multiple jumpers have an additive affect upon gain so for example the LO and MED jumpers together provide a gain of 19 Initial setup is now complete and normally only requires repeating if a sensor is replaced Final calibration of this channel may now be performed using the GDA 400 s electronic Cal Mode feature described in section 3 2 5 Optional 4 20mA Input Notes for Ch s 3 amp 4 TR1 Ch3 100 ohm 4 20mA terminator TR2 Ch4 100 ohm 4 20mA terminator Install TR1 or TR2 only for 4 20mA Inputs Move JP5 or JP6 to 4 20 left side Ch3 mA Input TB1 8 TB1 9 Ch4 mA Input TB1 11 TB1 12 Shields may be tied to PCB mounting screw EXC1 EXC2 EXC3 EXC4 Set EXC Sensor Excitation pots R2 R12 R22 R32 for correct Sensor volts between R amp Aterminals for channels 1 2 3 amp 4 BAL1 BAL2 BAL3 BAL4 Set BAL Sensor Balance pots R3 R13 R23 R33 for correct ZERO readings for channels 1 2 3 amp 4 Ej E is Set Coarse Gain jumpers JP1 JP2 JP3 JP1 2 JP4 for correct sensor millivolts for channels 68 sz 1 2 384 L CE amp 5 j IPG 2m Zz Figure 4 4 Quad Channel Bridge Sensor Input 4 2 4 Optional Discrete Relay PCBs 5700 0015 IMPORTANT This PCB P N 5700 0015 may only be installed into motherboard positio
15. the channel is Active 15 GDA 400 4 Channel Controller Instruction 5700 9000 CHHHHEL x CONFIG B Hame 19 digits ELUHIT digits SP arn 169 Decimal Pts BH Channel Active YES Figure 3 4 Channel Configure Menu 3 2 4 1 Name EUnits ASCII Data Fields The first two items in this menu are for entering the 10 character channel Name and engineering unit ASCII fields Name should describe the channel s data in user terminology such as tag number or other description Eunits should define the units of measure for what this channel is to display Section 3 2 describes how to modify these fields using the keypad 3 2 4 2 Input Measurement Range The Zero Span menu entries allow configuration of the measurement range displayed by this channel Measurement Range defines the range of the input signal s engineering units For example if a channel s input is 4 20mA from a transmitter monitoring 0 to 10ppm chlorine then the Zero value should equal 0 000 and the Span value equal 10 00 Four digits must be entered so trailing 0 s may appear here that are not displayed on other data screens These menus work hand in hand with Min Max Raw Counts menus described in section 3 3 4 3 2 4 3 Decimal Point Resolution Resolution of the displayed channel value is configured in this menu by setting the number of digits trailing the decimal point Displayed readings are limited to a maximum of four digits
16. with a polarity sign Auto ranging displays the highest resolution allowed by this menu s decimal point entry For example a range of 0 to 100ppm and two decimal points reads 0 00 at Oppm and 100 0 at 100ppm This may be undesirable due to the high resolution at zero unless the sensor s output is extremely stable If decimal points are limited to one the Oppm reading becomes 0 0 and the 100ppm reading remains 100 0 Resolution may be limited further by setting decimal points to 0 where in the above example Oppm reads 0 and 100ppm reads 100 3 2 4 4 Turning Off Unused Channels The Channel Active menu entry asks if this channel is to be utilized OFF causes the controller to never process inputs applied to this channel and no alarms are tripped or data displayed Inactive channels have a line drawn through them on the Setup screen to indicate it 1s turned off 16 Instruction 5700 9000 GDA 400 4 Channel Controller 3 2 5 CAL Setup Menu The GDA 400 CAL MODE feature supports pushbutton calibration of zero and span values This feature should be utilized only when there are no other zero span controls within the monitoring system since it is inappropriate to calibrate a signal at more than one point Therefore if calibration will be performed at another transmitter or monitoring device the GDA 400 CAL MODE feature should not be used The CAL SETUP menu allows for entering of the correct Zero and Span Gas set point values needed to calibrate t
17. 04 2 NA Chan2 Fault Alarm 12005 2 NA Chan2 Alarm 1 12006 2 NA Chan2 Alarm 2 12007 2 NA Chan2 Alarm 3 12008 2 Chan3 Fault Alarm 12009 2 NA Chan3 Alarm 1 12010 2 NA Chan3 Alarm 2 12011 2 NA Chan3 Alarm 3 12012 2 NA Chan4 Fault Alarm 12013 2 NA Chan4 Alarm 1 12014 2 NA Chan d Alarm 2 12015 2 NA Chan4 Alarm 3 12016 2 NA Standard Relay 1 12017 2 NA Standard Relay 2 12018 2 NA Optional Relay 1 12019 2 NA Optional Relay 2 12020 2 NA Optional Relay 3 12021 2 NA Optional Relay 4 12022 2 NA Optional Relay 5 12023 2 NA Optional Relay 6 12024 2 NA Input Fault Relay 12025 2 NA Read Only Registers Product ID 30001 4 NA Returns the numeric value 1000 for product ID Firmware value 30002 4 NA Return a numeric value for firmware value as Version divided by 100 D2A Chan 1 31001 4 NA D2A Chan 2 31002 4 NA D2A Chan 3 31003 4 NA D2A Chan 4 31004 4 NA 12 bit value representing the D2A value of 800 0 to 4000 100 after all cal features are applied 30 Instruction 5700 9000 GDA 400 4 Channel Controller Chan 1 Status 31005 4 NA Chan 2 Status 31006 4 NA Chan 3 Status 31007 4 NA Chan 4 Status 31008 4 NA 16 bit status word bit assignment for each channel ALARMI BELOW BIT BITI ALARM2 BELOW BIT BIT2 ALARM3 BELOW BIT BIT3 ALARMI LATCH BIT BITS ALARM2 LATCH BIT BIT6 ALARM3 LATCH BIT7 WIRELESS INPUT BIT4 CHANNEL DISABLED BIT BIT9 CHANNEL CAL BIT BIT10 System Status Word 31009 4 NA 16 bit status word bit ass
18. 3 Divisor 41036 3 NA Chan 4 Zero Real 41037 3 NA Chan 4 Zero Divisor 41038 3 NA Chan 4 Span Real 41039 3 NA Chan 4 Span Divisor 41040 3 NA Chan 4 Fault Alarm Real 41041 3 NA Chan 4 Fault Alarm Divisor 41042 3 NA Chan 4 Alarm 1 Real 41043 3 NA Chan 4 Alarm 1 Divisor 41044 3 NA Chan 4 Alarm 2 Real 41045 3 NA Chan 4 Alarm 2 Divisor 41046 3 NA Chan 4 Alarm 3 Real 41047 3 NA Chan 4 Alarm 3 Divisor 41048 3 NA Memory ASCII Strings User Info Chan 1 40401 40405 3 NA User Info Chan 2 40406 40410 3 NA User Info Chan 3 40411 40415 3 NA User Info Chan 4 40416 40420 3 NA 10 ASCII characters 2 per register assigned to the unit identifier read as bytes EUNITS Chan 1 40421 40425 3 NA EUNITS Chan 2 40426 40430 3 NA EUNITS Chan 3 40431 40435 3 NA EUNITS Chan 4 40436 40440 3 NA 10 ASCII characters 2 per register assigned to the engineering units read as bytes Chan 1 ASCII Reading 40441 40443 3 NA Chan 2 ASCII Reading 40444 40446 3 NA Chan 3 ASCII Reading 40447 40449 3 NA Chan 4 ASCII Reading 40450 40452 3 NA 6 ASCII characters 2 per register reflecting the display readout Firmware Version Version 40453 40455 3 NA 5 ASCII characters 2 per register reflecting the firmware version 4 4 Optional External 24VDC 50 Watt Power Supplies Some applications may require 24VDC power in excess of the 12 watts supplied by the GDA 400 NEC Class 2 FIFTY WATT external supplies are available for Division 1 and Division 2 potentially hazardous area installat
19. 700 0020 may only be installed into motherboard position P1 The Quad Channel Bridge Sensor Input option P N 5700 0020 shown in Figure 4 4 allows these sensors to be connected directly to the GDA 400 without additional signal conditioning or transmitters Each channel is equipped with a bridge amplifier balance potentiometer and an adjustable switching regulator for setting the correct sensor excitation voltage A 3 position coarse gain jumper allows setting the gain of the bridge amplifier Fault supervision circuitry forces the GDA 400 into a FAULT condition upon sensor failure or removal This option may also be configured to accept 4 20mA inputs into channels 3 and 4 to allow mixing sensors and current loops into the same board Placing either channel s 2 position LEL 4 20mA jumper JP5 or JP6 into the 4 20mA position and installing the associated precision 100 ohm socketed resistor allows 4 20mA signals to be applied to the mA mA terminals see Optional 4 20mA notes in Figure 4 4 Precision 100 ohm resistors are taped to the inside of the GDA 400 enclosure Bridge sensors require the nitial Setup calibration procedure described in section 4 2 3 After performing the one time only nitial Setup all subsequent calibrations are by the GDA 400 s electronic Cal Mode menus see section 3 2 5 Sensors mounted locally to the GDA 400 normally do not require nitial Setup since it is performed at the factory 4 2 3 Bridge Sensor Initial S
20. BBs Time 1rii54 22 Date 0519 07 Figure 3 10 Clock Delays Menu 3 3 4 Communications Menu The COMM SETUP menu allows setting of the system s modbus Slave ID or RTU address requires Modbus option PCB see Section 3 2 This s ave port may be used to transfer GDA 400 data to a modbus master device such as a PC PLC DCS or even other Bacharach Inc Controllers such as the 16 Channel ST 71 The slave port is addressable allowing many GDA 400 controllers to be connected to a single RS 485 cable A converter is available to make this port also compatible with Ethernet TCP IP networks The entire modbus database including registers and supported Function Codes is documented in Section 4 3 1 See Section 4 for COMM SETUP menu descriptions for WIRELESS GDA 400 networks SYSTEM SETUP p COMM SETUP ress Relay Setur Edit Rz Hck4Horn Setur Slave ID Clock Delays Communications In Fut Outeut Setur Track Hedative HO Figure 3 11 Communications Menu 3 3 5 Analog Setup Menu The systems ANALOG SETUP menus in Figure 3 12 allow for setting of the 11 bit A D analog to digital counts and the 10 bit D A digital to analog counts for each of the four channels Use the Set Channel entry to scroll to the desired channel using the EDIT key The live A D counts value for the channel selected is also shown on the bottom of this screen The default sett
21. D SERVER ANALOG SETUP Set Channel 1 4 Set Input Min Max Set utrut Input Tyre Analog Rmt Kmitter ID 661 ALD Counts 441 Wein Counts INPUT SETUP 400 Max Counts 2000 Figure 3 0 Configuration Menus Wein Counts DUTPUT SETUP 200 Counts 1000 13 GDA 400 4 Channel Controller Instruction 5700 9000 3 2 1 GDA 400 Setup Configuration Menus The SETUP menu shown in the middle of Figure 3 0 and in Figure 3 1 is reached by pressing EDIT with any data display present This is the entry level screen to ALL Channel System and Security menus It also shows the revision of firmware operating in the GDA 400 Use the UP DOWN keys to move the pointer to the desired menu and press the EDIT key SETUP firmware mreu3 Channel 1 amp Channel 2 Channel 3 Channel 4 System Security History Figure 3 1 Setup Menu 3 2 2 Channel Setup Entry Menu The CHANNEL menu shown below in Figure 3 2 allows configuration of all variables for the selected channel These are Fault Alarm 1 Alarm 2 Alarm 3 Configure and CAL Setup Channel x SETUP Fault Hlarm 1 Hlarm 2 Hlarm 3 Configure CAL Setur Figure 3 2 Channel Menu 3 2 3 Fault Alarm 1 Alarm 2 Alarm Set up Menus Alarms 1 2 and 3 have identical menus The only difference between each is A1 front panel LED
22. Dual 4 20mA Each Input option listed may also be configured for 4 20mA Inputs See drawings for details on each lt Loceng SUPPLY n INPUT 3WamsMAX 4 T i Lun RESET Available for 10 30VDC primary power input May also be used as battery back up to AC primary power source TIE TB5 GND to EARTH Dry contact input for use with optional remote Alarm Reset switch Wires must be shorter than 10 feet amp shielded if longer than 2 feet Terminal 24 VDC Terminal is open collector 100mA driver for use with optional 100 decibel piezo annunciator Universal Switching Power Supply PS1 Ribbon Cable to Display Assembly 4 20mA OUTPUT OPTION See dwg 10 0223 i RELAY 1 Indicator e RELAY 2 Indicator UL TB1 TB2 J2 1 2 1 2 JS S d 1 AUDIBLE L ax J ALARM OPTION POWER 7 OUTPUT LA J2 TB3 24 VDC power output for remote devices such as transmitters lights relays etc 350mA MAX see Figure 3 0 Instruction 5700 9000 2 Channel Controller MotherBoard DATA LOGGER PORT Ce Connections to J1 amp J3 are not covered by CSA J1 Common O TP1 0 volts DISCRETE RELAY OPTION Note If installed this option blocks access to the fuse and must be removed to replace fuse WARNING For continued protection against fire replace only with same type and rating of fuse 3snd dv 2 AMP FUSE 5 x 20mm TB3 TB4 N
23. ETUP menus configured to share the same hopping channel 0 32 and System ID 0 255 to communicate AII Bacharach wireless transceivers utilize a Server Client network where Clients synchronize their hopping to the Server The Server transmits a beacon at the beginning of every hop 50 times per second Client transceivers listen for this beacon and upon hearing it will indicate InRange with the LED on the radio modem board and synchronize their hopping with the Server Each network should consist of only one Server There should never be two servers on the same RF Channel number 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 as opposed to a battery powered GDX 350 RF utilizing a sleep mode and Servers typically should be centrally located since all Clients must receive the beacon in order to communicate ANTENNA 10124547 IN RANGE ue 5 e S m ASSY 10 0355 AL 0010 1274 IN RANGE Ue 5 9 ea 9 m 0 eee RADIO MODULE 0 4 RADIO A 4 MODULE DO ad 4 B 4 d ANTENNA 2
24. FIED fuse or current limiter is required to be installed as per local or national codes Markings for positions of the switch or breaker should state T for on and O for off Clean using only a damp cloth with no solvents Equipment not used as prescribed within this manual may impair overall safety Instruction 5700 9000 GDA 400 4 Channel Controller 2 General Description The Bacharach Inc GDA 400 Four Channel Controller is designed to display and control alarm event switching for up to four inputs Inputs are typically voltage or 4 20mA current from transmitters monitors or other analog output devices The GDA 400 is equipped with a Fault and three alarm levels per channel with features such as ON OFF delays latching relays and alarm Acknowledge A dedicated horn driver circuit for a local audible annunciator 1s also standard Two standard 5 amp alarm relays are able to be configured via the Alarm Voting menu to cause relays to trip based upon various alarm combinations Real Time Clock and Calendar are also standard Options such as 4 20mA outputs discrete relays for each alarm and audible annunciators are easily added RS 485 Modbus RTU or Ethernet Modbus TCP ports are also available for sending data to PC s PLC s DCS s or other Bacharach Inc controllers A 128 x 64 pixel graphic LCD readout displays monitored data as bar graphs 30 minute trends and engineering units System configuration is accomplished via user friendly
25. Modbus RTU RS 485 Ethernet and a data logger may also be installed to connectors located on the Motherboard The Motherboard PCB contains a 24 VDC universal input 100 240 VAC switching power supply with up to 350mA available at the TB3 Auxiliary Power Output terminals If AC power is unavailable or if a DC battery back up supply is needed TB1 provides terminals for DC power input Blocking diodes isolate internal and external DC supplies as shown in Figure 4 0 See section 2 2 1 for additional power source information Universal Input Power Supply In 2 Amp 250V 5x20mm fuse located under DC Out terminal cover WARNING For continued protection against fire replace only with same type and rating of fuse To Local Controller Circuits To optional 24VDC Terminals OS SHOCK HAZARD TNT Coy 115 RISK OF ELECTRICAL e SHOCK DISCONNECT OR gone POR A SORO HE TURN OFF POWER INPUT OUTPUT AC POWER BEFORE SERVICING THE only with AC Primary Power EQUIPMENT Figure 4 0 Power Supply Connections TB2 offers field terminals for a remote alarm reset switch The motherboard also includes standard alarm relays 1 and 2 K1 and K2 and their indicating LED s TB4 provides field wiring terminals for these relays 5 is for connection to the 100 240 VAC power source 23 GDA 400 4 Channel Controller IRS R85 ETHERNET OPTION L SENSOR INPUT OPTIO Combination Cat bead Toxic Dual Cat bead Dual Toxic
26. R PER NETWORK COMM SETUP RADIO SETUP Press Configure Radio Hor Channel B2 Wireless Receiver Sustem ID B2 Wireless HM DBLUS TH Power WATT Slave ID xxx Mode CLIEHT SERVER Radio configuration menu only displayed with RF module present on motherboard Figure 6 2 6 3 WIRELESS RECEIVER MODE Wireless Receiver mode is exclusively for wireless communication to our GDX 350 RF wireless sensor transmitters In Receiver mode the radio connects to the GDA 400 s Mother board and receives input data from up to four GDX 350 RF sensor transmitters Wired and wireless inputs may be mixed between the GDA 400 s four channels so it is possible to also accept wired signals from analog input option PCBs described in section 4 2 Input Output Optional PCBs Use the WIRELESS setting shown at right of Figure 6 3 ONLY FOR COMMUNICATION TO GDX 350 WIRELESS TRANSCEIVERS GDX 350 RF s transmit 200 counts for 0 and 1000 counts for 100 full scale readings so Input Min Max menu values should be 200 and 1000 factory default The Rmt Xmitter ID menu entry must match the Remote Id address setting in the GDX 350 RF providing data to this GDA 400 channel Voltage level of the 3 6 volt lithium battery in this GDX 350 RF is also displayed on the ANALOG SETUP screen below the Rmt Xmitter Id 36 Instruction 5700 9000 GDA 400 4 Channel Controller SYSTEM SETUP AHALOG SETUP Relays Setur Set Channel 1 4 Ez Ack Horn Setur Set Ineut Min Max Clo
27. are normally mounted to a metal bracket which should be grounded to the GDA 400 earth connection Surge energy induced into the antenna will be drained first by the mount s ground connection second by the outside shield of the coax cable to the ground connection on the radio and third by the internal conductor of the coax cable via the radio electronics This third earth path causes damage unless the other two paths provide a better earth connection allowing surge energy to bypass the electronics When an antenna is located outside of a building and outside of an industrial plant environment external coax surge diverters are recommended to further minimize the effect of surge current in the inner conductor of the coax cable Coax surge diverters have gas discharge element which breaks down in the presence of high surge voltage and diverts any current directly to a ground connection A surge diverter is not normally required when the antenna is within a plant or factory environment as the plant steelwork provides multiple parallel ground paths and good earthing will provide adequate protection without a surge diverter 6 6 2 CONNECTIONS TO OTHER EQUIPMENT Surges can enter the wireless unit from connected devices via I O serial or Ethernet connections Other data devices connected to the wireless unit should be well grounded to the same ground point as the wireless unit Special care needs to be taken where the connected data device is remot
28. at 123 4 is returned as 1234 Decimal devisor is returned as 1 10 100 or 1000 for decimal position of 1 2 3 or 4 where 123 4 would return the devisor value 10 Chan 1 Zero Real 41001 Chan 1 Zero Divisor 41002 Chan 1 Span Real 41003 Chan 1 Span Divisor 41004 Chan 1 Fault Alarm Real 41005 Chan 1 Fault Alarm Divisor 41006 Chan 1 Alarm 1 Real 41007 Chan 1 Alarm 1 Divisor 41008 Chan 1 Alarm 2 Real 41009 Chan 1 Alarm 2 Divisor 41010 Chan 1 Alarm 3 Real 41011 Chan 1 Alarm 3 Divisor 41012 Chan 2 Zero Real 41013 Chan 2 Zero Divisor 41014 Chan 2 Span Real 41015 Chan 2 Span Divisor 41016 Chan 2 Fault Alarm Real 41017 Chan 2 Fault Alarm Divisor 41018 Chan 2 Alarm 1 Real 41019 Chan 2 Alarm 1 Divisor 41020 Chan 2 Alarm 2 Real 41021 Chan 2 Alarm 2 Divisor 41022 Chan 2 Alarm 3 Real 41023 Chan 2 Alarm 3 Divisor 41024 WWWWW WWW 0 U9 WWW WWW WW U9 W 32 Z ZZZ ZZZ ZZZ Z Z 4 4 4 4 Z ZZZ ZZZ ZZ Z gt gt gt K gt gt KK K K K gt gt Z Z Instruction 5700 9000 GDA 400 4 Channel Controller Chan 3 Zero Real 410251 3 NA Chan 3 Zero Divisor 41026 3 NA Chan 3 Span Real 41027 3 NA Chan 3 Span Divisor 41028 3 NA Chan 3 Fault Alarm Real 41029 3 NA Chan 3 Fault Alarm Divisor 41030 3 NA Chan 3 Alarm 1 Real 41031 3 NA Chan 3 Alarm 1 Divisor 41032 3 NA Chan 3 Alarm 2 Real 41033 3 NA Chan 3 Alarm 2 Divisor 41034 3 NA Chan 3 Alarm 3 Real 41035 3 NA Chan 3 Alarm
29. bber devices shouid be used for switching inductive oads 4 2 5 Optional 4 20mA Analog Output Board 5700 0019 IMPORTANT 7his PCB P N 5700 0019 may only be installed into motherboard position P2 An optional 10 bit 4 20mA analog output board shown in Figure 4 6 may be added Each channel s output will transmit 4mA for 0 readings and 20mA for 100 readings If the GDA 400 primary power is 100 240 VAC or at least 24 VDC 4 20mA outputs are capable of driving 20mA through a 750 ohm load Outputs are self powered and DC power should not be provided by the receiving device Precision calibration of the 4 20mA output DAC digital to analog converter is accomplished via the Analog Setup menu as described in section 3 3 4 28 Instruction 5700 9000 Optional 4 20mA Output Notes 4 20mA Outputs are sourcing and 24 VDC power must not be supplied by the receiver device Loop drive capability is 750 ohms with nominal 85 240 VAC power or j 24 VDC power as the Controller 59 CH1 CH2 primary power supply GDA 400 4 Channel Controller TB1 T82 1 2 3 4l 1 2 4 O O O SIS S S O d CH3 CH4 4 20mA OUTPUTS Figure 4 6 Analog Output Board 4 3 MODBUS RS 232 RS 485 Interface Option 25700 0017 The Modbus option PCB P N 5700 0017 adds both RS 232 and RS 485 Modbus RTU slave ports Figure 4 7 shows this optional PCB which mounts to connectors on the upper left corner of the GDA 400 moth
30. between the thick cable and the radio connection The polarity of these antennas is the same as the main axis and they are normally installed vertically They can be mounted horizontally horizontal polarity however the antenna at the other end of the wireless link would need to be mounted perfectly parallel for optimum performance This is very difficult to achieve over distance If the antenna is mounted vertically it is only necessary to mount the other antennas vertically for optimum coupling this is easy to achieve Dipole and collinear antennas provide best performance when installed with at least 1 to 2 wavelengths clearance of walls or steelwork The wavelength is based on the frequency Wavelength in meters 300 frequency in MHz Wavelength in feet 1000 frequency in MHz Therefore 900 MHZ antennas require at least 2 3 meter 2 feet and 2 4GHz 15 cm 6 inches Antennas may be mounted with less clearance but radiation will be reduced It is important for the antenna mounting bracket to be well connected to earth or ground for good lightning surge protection 6 5 2 YAGI ANTENNAS Yagi antennas are directional along the central beam of the antenna The folded element is towards the back and the antenna should be pointed in the direction of the transmission Yagis should also be mounted with at least 1 to 2 wavelengths of clearance from other objects The polarity of the antenna is the same as th
31. ccssssececsececeeseeeeceeaececeeeeeceeueeeceeaaececeeseeceeaeeeceeaeeeseenaeens 23 4 2 Input Output Optional PCBs 24 4 2 1 Optional Analog Input 5700 0014 isses enne ennt nnns 25 4 2 2 Optional Bridge Sensor Input Board 45700 0020 26 4 2 3 Bridge Sensor Initial Setup 26 4 2 4 Optional Discrete Relay PCBs 5700 0015 ener nnne 27 4 2 5 Optional 4 20mA Analog Output Board 45700 0019 28 4 3 MODBUS RS 232 RS 485 Interface Option 85700 0017 29 4 3 1 MODBUS Register and Function Code Summary esses enne 30 4 4 Optional External 24VDC 50 Watt Power Supplies sees 33 5 WALL Se auis leto isi 34 6 ADDING THE WIRELESS RADIO KIT OPTION eene ee eene en enne enhn nean thes ossa sensato essen 35 GDA 400 4 Channel Controller Instruction 5700 9000 6 1 Introduction re S se mr E Rare e Mes ved ee Exe 35 6 2 Radio Set p MHU eere eem Ere 36 6 3 Wireless Receiver ERR EORR RENE E eph MATIS 36 6 3 1 Radio Status Alarms Wireless Receiver
32. ck Delays Set Outeut Min Max Communications Irnrut Tyre WIRELESS W InrutzOutrut Setur Rmt Amitter ID 001 Track Hedative HO Counts 441 AID Counts at bottom are most recent transmitted value from the wireless monitor Figure 6 3 6 3 1 RADIO STATUS ALARMS WIRELESS RECEIVER MODE When an GDA 400 channel s Input Type is set for WIRELESS in addition to processing the GDX 350 RF s 10 bit counts value it also receives status bits indicating Communications Error Low Battery and C 6 4 Communications Error Each channel s 30 minute trend screens Figure 6 4 are very useful for diagnosing wireless problems since it indicates amount of time since the most recent transmission was received The down arrow on top of the trend screen resets to far right each time a transmission is received by that channel When not in alarm GDX 350 RFs transmit each 5 minutes so the arrow should never progress past the 5 minute interval The GDA 400 activates the channel s FAULT alarm and indicates ComErr if no transmission has been received in 18 consecutive minutes Low Battery status indicates the GDX 350 RF s integral 3 6V lithium D cell has dropped to below 3 3V and should be replaced very soon LoBatt is indicated on the GDA 400 s LCD readout and the Alarm 3 LED flashes Relays are not energized by low battery conditions The actual battery voltage of each GDX 350 RF may be seen in the ANALOG SETUP screen d
33. d to on the motherboard TB3 terminals 1 and 2 on the motherboard provide a maximum of 12 watts output for powering auxiliary external devices such as relays lights and monitors see Figure 4 0 Power consumed from TB3 must be included when calculating system power consumption IMPORTANT 7B3 only provides 24VDC power when AC is primary power 24 VDC terminals on the Analog input option P N 5700 0014 may also be used to power external transmitters and these loads must also be calculated into the overall power budget These terminals receive power from both the integral AC DC power supply and the external TB1 supply as shown in Figure 4 0 Some applications may require 24VDC power in excess of that which is available from the GDA 400 s integral AC power supply and thereby require an external AC DC supply NEC Class 2 50 watt external supplies are available for Division 1 and Division 2 potentially hazardous area installations and both also include a NEMA 4X weather rating 2 2 2 Relays Two mechanical dry contact common Form C relays are standard and may be mapped to various alarm events as described in section 3 3 1 GDA 400 s may also be equipped GDA 400 4 Channel Controller Instruction 5700 9000 with optional solid state common Form A relays for applications requiring non arcing switching Solid state relays are recommended for switching of highly inductive loads A six mechanical dry contact Discrete Relay option board
34. e direction of the orthogonal elements For example if the elements are vertical the Yagi transmits with vertical polarity In networks spread over wide areas it is common for a central unit to have an omni directional antenna and the remote units to have Yagi antennas In this case as the omni directional antenna will be mounted with vertical polarity then the Yagi s must also have vertical polarity Care needs to be taken to ensure the Yagi is aligned correctly to achieve optimum performance 38 Instruction 5700 9000 GDA 400 4 Channel Controller Two Yagis can be used for a point to point link In this case they can be mounted with the elements horizontally to give horizontal polarity There is a large degree of RF isolation between horizontal and vertical polarity approx 30dB so this installation method is a good idea if there is a large amount of interference from another system close by transmitting vertical polarity An important mounting tip if a Yagi has drainage holes in the dipole element do not mount the antenna with the drainage 6 5 3 MOUNTING NEAR OTHER ANTENNAS Avoid mounting your network s antenna near any other antenna even when the other antenna is transmitting on a different radio band High RF energy of the transmission from a close antenna can deafen a receiver This is a common cause of problems with wireless systems Because antennas are designed to transmit parallel to the ground rather than
35. e from the wireless unit requiring a long data cable As the data device and the wireless unit cannot be connected to the same ground point different earth potentials can exist during surge conditions There is also the possibility of surge voltages being induced on long lengths of wire from nearby power cables Surge diverters can be fitted to the data cable to protect against surges entering the wireless unit The same principle applies to I O devices that are not close to the wireless unit the risk of surge increases 40 Instruction 5700 9000 7 Service Centers United States 8621 Highway 6 Hitchcock TX 77563 Ph 724 334 5051 Fax 724 334 5723 Email help MyBacharach com 41 GDA 400 4 Channel Controller EACHARACH 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 sos Printed in U S A Registered Trademark of Bacharach Inc
36. erboard TB1 provides two pairs of T Rx terminals and a floating terminal for shield continuation This makes it easy to multi drop GDA 400 s onto an RS 485 cable without doubling wires into the same screw terminals RS 232 interface may be made by connecting to DB9 connector S1 Section 4 3 1 lists all modbus registers and their function codes 5700 0017 option RS 232 Connector Schematic NC no connect Shortedto 8 7 Shorted to7 8 NC 9 gt H JP2 Term Resistor 5 Select RS 485 Terminal Schematic NC no connect TB1 8 TIRX B NC for shield continuation A TIRX B RS 485 Transceiver ET RS 232 Transceiver Follow correct IEEE RS 232 and RS 485 installation guidelines when using the JP1 selects either RS 232 or RS 485 operation JP2 installs RS 485 terminating resistor end of cable only TB1 RS 485 terminations 51 zRS 232 terminations Figure 4 7 MODBUS PCB 29 GDA 400 4 Channel Controller Instruction 5700 9000 4 3 1 MODBUS Register and Function Code Summary The following table identifies the available modbus RTU register locations and function codes VARIABLE ALIAS READ FUNCTION CODE WRITE FUNCTION CODE Read Write Coils Alarm Ack Reset 2001 1 5 Note After writing a TRUE to this register the GDA 400 automatically returns it to FALSE Read Only Discrete Chan Fault Alarm 12001 2 NA Chan 1 Alarm 1 12002 2 NA Chan Alarm 2 12003 2 NA Chan Alarm 3 120
37. escribed above in section 6 3 Calibrations performed at the ST 48 RF force a transmission of the Calibration bit which is indicated on the GDA 400 s LCD readout by Rmt Cal Alarms are inhibited until the Calibration bit is cleared 18 minutes 5 minutes Chx ComErr PPM Figure 6 4 WIRELESS MODBUS SLAVE MODE Wireless MODBUS allows one or many GDA 400s to function as wireless modbus slaves by selecting wireless MODBUS in the COMM SETUP menu Figure 6 3 These wireless networks require a modbus master such as a DCS HMI or other Bacharach controller also equipped with a radio modem One transceiver must be 37 GDA 400 4 Channel Controller Instruction 5700 9000 designated as Server and all others as Clients No special configuration is required by the master or slave since this is a standard modbus network However radios must have the same Hop Channel and System ID settings to communicate The entire GDA 400 modbus database including registers and supported Function Codes is documented in section 4 3 6 5 ANTENNA SELECTION 6 5 1 DIPOLE AND COLLINEAR ANTENNAS These antennas are connected to the Radio via a length of coax cable If the cable is larger than 6mm diameter 1 4 inch do not connect the cable directly to the radio connection on the GDA 400 enclosure Thick cables have large bending radii and sideways force on the connector can cause a poor connection Use a short flexible pigtail
38. etup Bridge sensors vary widely in power requirements and sensitivity It is therefore important to configure each channel to match the sensor with which it will operate Sensors attached to the GDA 400 enclosure at the factory have already had Initial Setup l Prior to connecting remote sensors apply power to the system Measure the voltage between each channel s A and R terminals and set the Voltage Adjust potentiometers for the correct sensor excitation voltage remove GDA 400 terminal cover This may range from 1 5 volts to 7 5 volts depending upon sensor specifications Sensors may be damaged by accidental over voltage conditions It is recommended the Voltage Adjust potentiometer screws be covered by a dollop of RTV or similar material after completion of this procedure 2 Remove system power and connect sensor wires to the A C R terminals Reapply system power and confirm correct voltage across each sensor s A and R 26 Instruction 5700 9000 GDA 400 4 Channel Controller terminals Note if sensor wires are long it will be necessary to measure the excitation voltage at the sensor end to compensate for IR voltage losses in the wiring 3 With zero cal stimulus on that sensor adjust it s Balance potentiometer for a ZERO reading on the LCD 4 Apply 50 span stimulus to the sensor and allow the reading to stabilize Place the 3 position Coarse Gain jumper into the position which reads between approximately 45 and 65 with 50
39. he channel These are entered in the same engineering units as input range Ch x CAL SETUP 34 Calibrate Gas a a Gas gh Set UNITY Gain CAL Offset 4 888 CAL Gain 1 668 Figure 3 5 CAL Setup Menu 3 2 6 Calibrate Input Menu The CAL MODE flow chart shown in Figure 3 6 is designed to make calibration quick easy and error free Optional 4 20mA outputs if equipped transmit 1 5mA during CAL MODE and 4mA during the subsequent CAL DELAY to prevent external alarms during calibration Local GDA 400 alarm relays are inhibited during CAL MODE Unintentional calibrations may be reset by the Set UNITY menu item Set UNITY resets Cal OFFSET to 0 and Cal GAIN to 1 which is useful for returning the calibration to a known starting place Sensor aging may be monitored by recording zero and span readings at Unity Gain when the sensor is new and again later when degradation may have occurred CAL MODE automatically exits if no keystroke is detected after 5 minutes Use the following step by step procedure to perform ZERO and SPAN calibrations 1 To enter the CAL MODE from any data display press the dual purpose DOWN CAL key Use the UP DOWN keys to select the channel to calibrate 2 Stimulate the monitor to be calibrated with an appropriate ZERO calibration standard Observe the screen s live reading and when it is stable press the EDIT key to perform the ZERO calibration 3 Ifthe ZERO ca
40. he next position within a field When the field is complete EDIT clears the cursor and loads the field into non volatile memory where it is retained indefinitely Without a cursor present the NEXT key closes any open menus in reverse order and returns the LCD to the data display 12 Instruction 5700 9000 GDA 400 4 Channel Controller Engrg Unit Screen 3B 25 EngrguUnits LEL CH4 AL FL 28 9 Foal Oxygen rem CO R2 1 Bar Graph Screen Press Next 30 1 Engraunits AULT ALEL CH4 20 9 rini PPM CO Press Next to scroll Ch Trend Screens Ch Trend Screen Chx 38 1 rem CO Press Edit to enter menu levels amp Next to reverse direction SETUP firmware reu Channel 1 Channel 2 Channel 3 Channel 4 System Security History Select Item press Edit Press Edit Channel x SETUP 7 Fault Alarm 1 Alarm 2 Hlarm 3 We Configure CAL Setur Select Item press Edit SYSTEM SETUP Relay Setur R2 Hck Horn Setur Clock Delays Communications Ingut Q utrut Setur Track Negative gt SYSTEM SECURITY 4 BB Contact Name Pass Code Unlocked HISTORY records up to 65 8 per page real time events such as Alarms Trips Alarm Acknowledgment pressing Alarm Reset button Calibrations amp P
41. herein belong to their respective owners Instruction 5700 9000 GDA 400 4 Channel Controller TABLE OF CONTENTS 1 IMPORTANT SAFETY ISSUES eae roa eu n reo e esr eaa ee oer eno rone eoe oae sopor eee oar eae 5 2 GENERALE DESCRIPTION ere oi eroe Pe Nt po Se Une aea Sep euo ga Vo eese cero eren 7 2 1 Data 5 5 oi Ar ote ord 8 21 1 Engineering Unit 8 2 1 2 Bar 8 24 3 Trend Screen reine 9 2 2 SDECITI CATIONS xc 9 2 2 1 Power Supply Requirements nn isses ennt nnns nnn 9 2 22 Relays ote tree eti e abe ee 9 2223 Ambient Temperature Ranges ree rore t esee 10 2 2 4 Humidity Rame oerte tree dere eee EP fei ore ere ek a 10 22 5 JAltit de ieri eR ER 10 2 2 6 Housings Installation Categories 10 2 2 7 Approvals e corre Paes aenea co ae nep 10 2 3 Accessories 11 3 BASIC OPERATION c 12 3 1 Setup Menu Configuration esse ee eee eee ee ee eee eee eee 12 3 2 Changing Menu Variables Using the Keypad sss sese ee eee 12 3 2 1 GDA 400 Setup Configuration
42. ignment for system status TRACK NEGATIVE BITO WIRELESS RECEIVER BIT1 SECURITY LOCK BIT15 Alarm Status Word 31010 4 NA 16 bit status word bit assignment for system status CHANI FAULT BITO CHANI ALARMI BIT1 CHANI ALARM2 BIT2 CHAN ALARM3 BIT3 CHAN2 FAULT BIT4 CHAN2 ALARMI BITS CHAN2 ALARM2 BIT6 CHAN2 ALARM3 BIT7 CHAN3 FAULT BIT8 CHAN3 ALARMI BIT9 CHAN3 ALARM2 BIT10 CHAN3 ALARM3 BIT11 CHAN4 FAULT BIT12 CHAN4 ALARMI BIT13 CHAN4 ALARM2 BIT14 CHAN4 ALARMG BITIS LED Blink Status 31011 4 NA Bit set to 1 LED Blinking bit set to 0 LED is steady ON CHANI FAULT BITO CHANI ALARMI BIT1 CHANI ALARM2 BIT2 CHAN ALARM3 BIT3 CHAN2 FAULT BIT4 CHAN2 ALARMI BITS CHAN2 ALARM2 BIT6 CHAN2 ALARM3 BIT7 CHAN3 FAULT BIT8 CHAN3 ALARMI BIT9 CHAN3 ALARM2 BIT10 CHAN3 ALARM3 BIT11 31 GDA 400 4 Channel Controller Instruction 5700 9000 CHAN4 FAULT BIT12 CHAN4 ALARMI BIT13 CHAN4 ALARM2 BIT14 CHAN4 ALARM3 BIT15 Relay Status 31012 4 NA Note 1 energized 0 deenergized STANDARD RELAY 1 BITO STANDARD RELAY 2 OPTION RELAY 1 BIT2 OPTION RELAY 2 BIT3 OPTION RELAY 3 BIT4 OPTION RELAY 4 BIT5 OPTION RELAY 5 BIT6 OPTION RELAY 6 BIT7 COMMON FAULT no relay BIT8 Reserved BIT9 Reserved BIT10 Reserved BIT11 Reserved BIT12 Reserved BIT13 Reserved BIT14 Reserved BIT15 VARIABLE ALIAS READ FUNCTION CODE WRITE FUNCTION CODE Memory Reals Notes 41001 41040 Real represents float value without the decimal point such th
43. indicators are yellow while A2 and A3 are red Typical applications often have set at a WARN level at a HIGH level and at a higher SHUT DOWN level However it is important to understand that there is no functional difference between Al A2 and A3 and since their configuration menus are identical therefore only one is shown in Figure 3 3 The Fault menus are identical to Al A2 A3 except Fault alarms are always low trips alarm activates as input goes below the set point and Fault alarms may not be set for latching operation 14 Instruction 5700 9000 GDA 400 4 Channel Controller Alarm 1 2 3 menus are identical FAULT Setur Alarm x 5etur B Fault Level B Set Point zB Delas Hs Delay As OFF Delay OFF Delay Ar Low TrirF HO Latchina HO Figure 3 3 Alarm and Fault Menus e Set Point is entered in engineering units and determines the value in which the alarm trips For example if a channel monitors 0 50 ppm 5 and the desired alarm level is 10 ppm the correct entry is 10 00 A one percent dead band prevents alarm chatter This means after tripping an alarm the input must move at least 1 of full scale back through the setpoint for the alarm to auto reset e The ON Delay OFF Delay entries allow ON and OFF time delays to affect how long the trip point must be surpassed before an alarm event transition occurs ON delays are limited to 10 seconds while OFF delays may
44. ing for A D counts is 400 for minimum and 2000 for maximum This is based on a 0 20mA input providing 0 2000 counts 100 counts per mA input e Min Counts Max Counts entries in the INPUT SETUP menus define the input A D counts range for Zero and Span readings as described in section 3 2 4 1 The default settings for each analog channel are 400 to 2000 counts Standard inputs yield 400 counts at 4mA and 2000 counts at 20mA but for example if a special application requires the Zero reading at 6mA input and the Span reading at 18mA input the correct A D Min Max Raw counts would be 600 to 1800 00 21 GDA 400 4 Channel Controller Instruction 5700 9000 e Min Counts Max Counts entries in the OUTPUT SETUP menus define the output D A counts range for Zero and Span readings as described in section 2 2 4 1 OUTPUT SETUP menus are only used when the GDA 400 is equipped with the 5700 0019 4 20mA output option Section 4 2 Ideally 200 to 1000 yields a 4 20mA output but slight modifications may be needed to provide precise 4mA and 20mA values for each channel SYSTEM SETUP ANALOG SETUP 7 INPUT SETUP Relay Setur We Set Channel 1 4 R2 Ack Horn Setur Set Inrut Min Max Bw Min Counts 468 Clock Delays Set Output Max Counts 2888 Communications Input Tyre Analog lneut Outeut Setur Track Negative NO _ Counts 441 OUTPUT SETUP BS Min Counts 268 Max Counts 1008 Figure 3 12
45. ions and both also include a NEMA 4X weather rating 33 GDA 400 4 Channel Controller Instruction 5700 9000 5 Wall Mount Enclosure The GDA 400 wall mount NEMA 4X enclosure is shown in Figure 5 0 Non metallic enclosures are not grounded by metal conduit For internal ground points to be grounded to earth the TB5 GND terminal must have a proper earth ground connection see Figure 4 1 CAUTION NONMETALLIC ENCLOSURE DOES NOT PROVIDE GROUNDING BETWEEN CONDUIT CONNECTIONS USE GROUNDING TYPE BUSHINGS AND JUMPER WIRES ALL FIELD WIRING MUST HAVE INSULATION SUITABLE FOR AT LEAST 250V 7 25 Clap Loter c dypical Front View Notes Moteriol Polycorbonote Side View Bottom View Figure 5 0 Wall Mount Enclosure 34 Instruction 5700 9000 GDA 400 4 Channel Controller 6 Adding the Wireless Radio Kit Option 6 1 Introduction The GDA 400 s ave serial port may be connected to a FHSS Frequency Hopping Spread Spectrum wireless radio modem shown in Figure 6 1 There are two different frequency options offered 900 MHz 5700 0032 e 2 4 GHz 5700 0033 The radio kit options allow two separate modes of wireless operation These are e Wireless Receiver section 6 2 accepting data from GDX 350 RF sensor transmitters e Wireless Modbus Slave section 6 3 providing data to a modbus master master side of network requires additional radio Each transceiver on a wireless network must have its RADIO S
46. l DC refers to direct current voltages VAC refers to alternating current voltages Read and understand the contents of this manual prior to operation Failure to do so could result in serious injury or death SHOCK HAZARD Disconnect or turn off power before servicing this instrument NEMA 4X wall mount models should be fitted with a locking mechanism after installation to prevent access to high voltages by unauthorized personnel see Figure 4 0 Only the combustible monitor portions of this instrument have been assessed by CSA for 122 2 No 152 performance requirements This equipment is suitable for use in Class I Division 2 Groups A B C and D or non hazardous locations only EXPLOSION HAZARD Substitution of components may impair suitability for Class I Division 2 EXPLOSION HAZARD Do not replace fuse unless power has been switched off or the area is known to be non hazardous EXPLOSION HAZARD Do not disconnect equipment unless power has been switched off or the area is known to be non hazardous Use a properly rated CERTIFIED AC power cable installed as per local or national codes For DC powered units DC power must be from a SELV rated source GDA 400 4 Channel Controller Instruction 5700 9000 A certified AC power disconnect or circuit breaker should be mounted near the controller and installed following applicable local and national codes If a switch is used instead of a circuit breaker a properly rated CERTI
47. libration is successful CAL MODE automatically proceeds to the SPAN check 4 Apply the correct SPAN calibration standard After the reading is stable press the EDIT key to perform a SPAN calibration 17 GDA 400 4 Channel Controller Instruction 5700 9000 WARNING The SPAN calibration standard used must match the value specified since this is the reading the GDA 400 will indicate after a successful SPAN calibration The SPAN calibration value may be edited if it becomes necessary to apply a different calibration standard to set SPAN see Span Calibration in section 3 2 5 5 Ifthe SPAN calibration is successful the display flashes REMOVE CAL GAS and starts the CAL DELAY 6 CAL MODE will be complete after the end of the CAL DELAY The flow chart in Figure 3 6 illustrates the above procedure UP CAL NEXT and EDIT labels indicate keystrokes CAL DOWN is a dual purpose key The CAL MODE information screen 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 set point calibration values may also be edited from this screen Holding the UP key for 5 seconds during CAL MODE displays this screen Unity Gain may be used at anytime to cancel incorrect calibrations and start again Unity means Offset 0 00 and Gain 1 00 ANY DATA DISPLAY
48. mA or voltage outputs Remove socketed 100 ohm R1 R4 terminators for 0 4 VDC max voltage inputs The 5700 0014 utilizes a 12 bit A D converter such that 4mA provides 400 counts and 20mA 2000 counts Min Max raw count menus default to 400 2000 but may be adjusted between 0 4095 as described in the A D Min Max Raw discussion in section 3 3 4 and TB2 provide each channel s terminals for receiving analog inputs and 2 also provides 4 terminals connected to the GDA 400 internal 24 VDC power supply for powering external transmitters Figure 4 3 shows correct wiring for both 2 wire and 3 wire transmitters R1 Ch1 100 ohm 4 20mA terminator R2 Ch2 100 ohm 4 20mA terminator R3 Ch3 100 ohm 4 20mA terminator Ch4 100 ohm 4 20mA terminator Spare 7 Spare 100 ohm 4 20mA terminator These 5 resistors are socketed for easy replacement Terminators are connected between each channel s HI amp LO terminals LO 24VDC Power Supply Common 24VDC 24VDC Power Supply output 0 HI CH1 CH3 HI LO LO 24VDC 24VDC CH2 CH4 HI LO LO 4 20mA INPUTS Figure 4 2 Analog Input PCB Option 25 GDA 400 4 Channel Controller Instruction 5700 9000 Signal Signal Common H 24 VDC Pwr 24 VDC Pur 2 Wire 4 20mA Transmitter 3 Wire 4 20mA Transmitter Figure 4 3 Wiring Schematic 4 2 2 Optional Bridge Sensor Input Board 5700 0020 IMPORTANT This PCB P N 5
49. n P3 The optional Discrete Relay PCB shown in Figure 4 5 adds six 5 amp form C relays Each relay is fully programmable as described in section 3 3 1 Many GDA 400 applications utilize the standard equipped Relay 1 Relay 2 see section 2 3 1 and do not require optional discrete relays All mechanical dry contact relays are rated at 5 Amp for 28 VDC and 250 VAC RESISTIVE loads 27 GDA 400 4 Channel Controller Instruction 5700 9000 IMPORTANT Appropriate diode DC loads or MOV AC loads snubber devices must be installed with inductive loads to prevent RFI noise spikes AC or DC power supplies to relays on the Discrete Relay PCB option P N 5700 0015 must be the same for each relay Example 24VDC should not be the power switched by one relay and 115VAC by others Note When installed this option blocks access to the fuse and must be remove to replace a blown fuse WARNING For continued protection against fire replace only with same type and rating of fuse K1 K2 K3 K4 K5 amp K6 are programmable as described in Section 2 3 1 TB1 terminals 1 4 7 10 13 amp 16 are Normally Open Contacts for K1 K6 TB1 terminals 2 5 8 11 14 amp 17 are Normally Closed Contacts for K1 K6 TB1 terminals 3 6 9 12 15 amp 18 are Common pole Contacts for K1 K6 E O O O BST Figure 4 5 Discrete Relay PCB o E 9 8 z g 2 Contacts are rated for 5 amp resistive loads Arc suppressing snu
50. ollow the logical AND function Failsafe Default set for YES causes this relay to be energized when its voting requirements are false no alarm condition and de energized when the alarm vote requirements are true The primary benefit of Failsafe is loss of power places the relay contacts into the alarm condition Over Ride menu allows for entering of one of the 16 different alarms that will trip this relay regardless of the Votes entries There are four channels with four alarms per channel and any one of these alarms may be used as the Over Ride This feature is useful when one channel s alarm has more significance than the others 19 GDA 400 4 Channel Controller Instruction 5700 9000 3 3 2 Relay 2 ACK Acknowledge Horn Setup Menu e The Horn SETUP menu controls how each alarm type Fault and Alarms 1 through 3 will affect the horn driver circuit connected to J2 on the motherboard Choices are OFF STEADY or PULSE Warning level alarms might be set to pulse the horn with high alarms set for steady Personnel then know which alarm level is present by hearing the pulsing or steady horn e Relay 2 Acknowledge Default set to ON allows Relay 2 to be deactivated during alarm conditions by an Alarm Reset This is useful if another audible device is being driven by the relay The acknowledge feature is not available for Relay 1 since it is often used for driving a warning light and Relay 2 for driving a horn It could be dangerou
51. ower Applied 118187 119147 116197 162487 192467 162487 192487 162467 02 30 19 02 21 43 02 12 22 23 36 56 2510115 25156152 23135611 25 56117 Ch2Ai0 LCLRCK Ch2Ail Ch4Aio Ch4R1I Ch4A20 Ch4A30 Ch4BRi IM Press Edit QUAD Channel Controller Menu Tree Press Next returns to EUnit Screen System Menus Press Edit gt RELAY SETUP Standard Oret Relay 1 WeFault Votes a Alarm 1 Votes 1 Alarm 2 Votes 4 Alarm 3 Votes a Failsafe HO L Over Ride HONE p R2 ACK HORN SETUP FAULT Setur Fault Level 1 ON Delay Os OFF Delay Bn Alarm 1 2 3 menus are identical Alarm x Setur B Set Point 28 ON Delay s OFF Delay Low Trir NO Latching NO m CHANNEL x CONFIG 1 1 1 1 1 1 i Fault OFF BR Hane 16 digits Alarm 1 PULSE ERIT 16 dim Alarm 2 STEADY 1 era Decimal Points at Channel Active VES 1 1 CLOCK DELRVS Ch CAL SETUP 1 Calibrate BP Alarm Refresh Os Zero Gas Warm Ur Delay 68s gt Span Gas 520 8 Cal Delas 6s 1 Set UNITY Gain Time 17 34 22 1 CAL Offset 6 088 Date 08 19 07 CAL Gain 1 888 i COMM SETUP RADIO SETUP Press Slave ID Edit WeHor Channel Wire le Receiver Radio menus only when 10 2454 radio module is installed em I
52. r ground connection Surges are electrical energy following a path to earth and the best protection is achieved by draining the surge energy to earth via an alternate path Wireless devices need to have a solid connection to earth via a ground stake or ground grid if the soil has poor conductivity Solid connection means a large capacity conductor not a small wire with no coils or sharp bends All other devices connected to the GDA 400 need to be grounded to the same ground point There can be significant resistance between different ground points leading to very large voltage differences during lightning activity Many wireless units are damaged by earth potential surges due to incorrect grounding 39 GDA 400 4 Channel Controller Instruction 5700 9000 It is very difficult to protect against direct lightning strikes but the probability of a direct strike at any one location is very small Unfortunately power line surges and electromagnetic energy in the air can induce high voltage surges from lightning activity several miles away 6 6 1 ANTENNA GROUNDING Electromagnetic energy in the air will be drained to ground via any and every earth path An earth path exists between the antenna and the GDA 400 and to protect against damage this earth path current must be kept as small as possible This is achieved by providing better alternate earth paths It is important to ground the antenna to the same ground point as the GDA 400 Antennas
53. s if an operator acknowledged the horn AND the light since no indication of the high alarm condition remains e Local Piezo Default set to ON causes the tiny local piezo adjacent to the LCD to mimic the J2 horn output 2 ACK HORH SETUP gt Fault OFF Alarm 1 PUL ZE Alarm 2 STEADY Alarm 3 OFF kelas 2 ACK OH Local Piezo Figure 3 9 Acknowledge Horn Setup Menu 3 3 3 Clock Delays Menu These GDA 400 timers accommodate inputs that may require varying times to stabilize after power is applied and after calibrations are complete e Alarm Refresh menu allows reactivation of Acknowledged alarms after the time period expires This feature is used primarily to restart audible alarm devices after having been silenced by an acknowledge function via serial port or pressing the Alarm Reset button An entry of 0 seconds effectively disables the Alarm Refresh function e Warm Up Delay menu allows for setting how long alarm relays remain disabled after power is applied e Cal Delay determines how long alarm relays are inhibited after completing a calibration e Time and Date menu items are for setting the correct time and date The GDA 400 is equipped with a 24 hour clock and calendar Time of day must be entered in 24 hour mode For example 6 00 00 PM is indicated as18 00 00 20 Instruction 5700 9000 GDA 400 4 Channel Controller CLOCK DELAYS B Alarm Fefresh Hs Warm Ur Delay Bs Cal Delay
54. see section 4 1 4 provides dedicated Form C relays for ALARM 1 ALARM 2 and FAULT for both channels All mechanical dry contact relays are rated at 5 Amp for 28 VDC and 250 VAC RESISTIVE loads IMPORTANT Appropriate diode DC loads or MOV AC loads snubber devices must be installed with inductive loads to prevent RFI noise spikes Optional solid state relays are rated at 2 Amp 12 280 VAC 600Vpk Relay wiring should be kept separate from low level signal wiring 2 2 3 Ambient Temperature Range 25 to 50 degrees C 2 2 4 Humidity Range 0 to 90 R H Non Condensing 2 2 5 Altitude Recommended up to 2000 meters 2 2 6 Housings Installation Categories e NEMA 4X wall mount for DIV 2 Groups A B C D Category II and pollution degree 3 NEMA 4X IP66 e NEMA 7 wall mount for DIV 1 and 2 Groups B C D includes O Ring in door to satisfy NEMA 4 rating ncludes standard non intrusive magnetic keypad 2 2 7 Approvals CSA C22 2 No 1010 1 and ISA 882 02 CSA C22 2 No 152 for combustibles UL 1604 C22 2 No 213 Div 2 Groups A B C D EN55011 and EN61000 CE Mark CSA File 219995 and may be seen at CSA International org 10 Instruction 5700 9000 2 3 Accessories Part Number Description GDA 400 4 Channel Controller 5700 0014 Quad 4 20mA input card 5700 0020 Quad bridge sensor input card 5700 0015 Alarm relay output card 5700 0019
55. so provides 30 minute trend screens for each channel as shown in Figure 1 2 Live readings and their Eunits are displayed across the top of each trend screen Channel numbers are shown in the upper right and are selected by the NEXT key A2 and A3 alarm levels appear as horizontal dashed lines across the screen 2 2 Specifications 2 2 1 Power Supply Requirements The GDA 400 s primary power may be either 10 30 VDC or 100 240VAC All models are equipped with an integral AC input 24 VDC 15 watt output switching power supply AC power requirements are 100 240 VAC 50 60 Hz 0 45 amp max including inrush and 20 watt maximum steady state applied to TB5 on the motherboard If AC power is not available the primary power may be 10 30 VDC applied to TB1 on the motherboard A back up DC power source may also be connected to TB1 for automatic switchover if the AC power source fails See Figures 4 0 and 4 1 for wiring information The basic GDA 400 consumes only 1 5 watts of 10 30 VDC power Optional features such as relays and analog outputs increase power consumption as described below e P N 5700 0014 Analog Input PCB option add wattage for each monitor connected to this board s 24 VDC terminals e P N 5700 0015 Discrete Relay PCB option add 1 5 watt e P N 5700 0019 4 20mA Output PCB option add 1 watt e P N 5700 0020 Bridge Sensor Input PCB option add wattage of each sensor attached With an AC primary power source connecte
56. the ALARM RESET key A SECURITY menu offers a password feature to prevent tampering with GDA 400 parameters A sign on screen appears briefly after power is applied that indicates what type input output options the unit is configured with 3 1 Setup Menu Configuration Variables inside the CHANNEL see section 3 2 and SYSTEM see section 3 3 menu trees allow the GDA 400 to be configured for a wide range of monitoring applications Select the desired menu by scrolling with UP DOWN and then EDIT to enter each menu Figure 3 0 illustrates the menu tree for configuring Channel and System specific variables Channel variables affect only the specific channel selected while System variables are related to features not specific to any channel 3 2 Changing Menu Variables Using the Keypad Upon entering a menu a pointer controlled by the UP DOWN keys indicates the selected variable Some are simple YES NO or ON OFF entries toggled by pressing the EDIT key Others such as Channel ID and Eunits fields may have many ASCII character possibilities Allowed ASCII characters are ordered as follows ABCDEFGHIJKLMNOPQRSTUVWXYZ V abcdefghijklmnopqrstuvwxyz blank space amp 0123456789 a Notice the often used blank character is located after lower case 7 and before the exclamation point EDIT places a cursor under the item and UP DOWN scrolls through each allowed entry The NEXT key moves the cursor to t
57. up or down vertical separation between antennas is a lot more effective than horizontal separation If mounting near another antenna cannot be avoided mounting it beneath or above the other antenna is better than mounting beside it Using different polarity to the other antenna 1f possible will also help to isolate the RF coupling 6 5 4 COAX CABLES If a coax cable connects to the antenna via connectors it is very important to weatherproof the connection using sealing tape Moisture ingress into a coax cable connection is the most common cause of problems with antenna installations A three layer sealing process is recommended an initial layer of electrical PVC tape followed by a second layer of self vulcanizing weatherproofing tape with a final layer of electrical PVC tape Allowing a drip U loop of cable before the connection is also a good idea The loop allows water to drip off the bottom of the U instead of into the connection reduces installation strain and provides spare cable length in case later the original connectors need to be removed the cable cut back and new connectors fitted Avoid installing coax cables together in long parallel paths Leakage from one cable to another has a similar effect as mounting an antenna near another antenna 6 6 SURGE PROTECTION AND GROUNDING Voltage surges can enter the GDA 400 via the antenna connection power supply connection connections to other equipment and even the earth o

Bacharach GDA-400 Owner's Manual

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