7200 Plus Two Channel Controller - User Manual
Contents
1. 10 of 62 P N 087 0039 Rev E Aug 09 7200 Plus SCOT T Instruction Manual e TB5 Terminals for AC power input AC power must be 100 240VAC 0 45A 50 60Hz Terminal 3 must be grounded to earth The Display CPU assembly attaches to the motherboard with 4 standoffs and connects via ribbon cable to S1 Input options that may be installed into the Input Option P1 connector located on the lower left side of the motherboard are an Analog Input PCB or a Bridge Sensor Input PCB The P2 connector may have an optional 4 20mA Output PCB The P3 connector may have an optional Discrete Relay PCB Another optional device that may be connected to the motherboard is MODBUS RTU RS 485 interface 2 1 2 Internal Display Assembly Removing the enclosure door provides access to the Internal Display Assembly Refer to Figure 2 4 Arrows below the bars indicate alarm trip point values making it easy to identify channels at or near alarm The direction the horizontal 45 degree arrow side points indicates either a HIGH as shown on Channel 1 or LOW as shown on Channel 2 trip Left and Right hand arrows located at the ends of each bar graph point towards Channel Alarm LED s on the front panel SW1 SW5 can be pressed to activate the switches instead of using the magnetic wand when the Internal Display Assembly is accessible e Programming Header Channel 1 Channel 2 Alarm LED s Channel 1 Alarm LED s Alarm 1 Z2 PPM H25 Alarm 1 dy Alarm 2 A2. Instruction Manual JONVIVE CHO Note JP3 Ch1 or JPA Ch2 must be set to the correct position of the input source If a 4 20mA loop is in use R1 Ch1 or R2 Ch2 must have amp a 100 ohm resistor installed SIGNAL 7 GAN AC Power POSITIVE NEGATIVE Source In 3 Wire Transmitter Typical Figure 2 9 3 Wire Transmitter Typical to Bridge Sensor Input PCB 16 of 62 P N 087 0039 Rev E Aug 09 7200 Plus SCOT T Instruction Manual 2 1 4 4 20 mA Analog Output The Dual Channel 4 20 mA Analog Output PCB P N 093 0436 option may be installed at P2 on the Motherboard Refer to Figure 2 10 i 1 gt FT US Optional 4 20mA Output Notes 4 20mA Outputs are sourcing and 24 VDC power must not be supplied by the receiver device EL cH1 CH2 Co 4 20mA OUTPUTS Figure 2 10 4 20mA Analog Output PCB Each channel output will transmit 4mA for 0 readings and 20mA for 100 readings If the 7200 Plus primary power is 100 240 VAC 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 Diagnostics menu Refer to Paragraph 4 4 1 4 for more details Loop drive capability is 750 ohms with nominal 85 240 VAC power or 24 VDC power as
3. Instruction Manual This Page Left Intentionally Blank 6 of 62 P N 087 0039 Rev E Aug 09 7200 Plus SCOT T Instruction Manual 2 Introduction The Scott Health amp Safety 7200 Plus Two Channel Controller is designed to display and control alarm event switching for up to two sensor points Inputs are typically a 4 20mA signal from a transmitter or signals from sensors directly The 7200 Plus is equipped with 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 alerts is also standard Two standard 5 amp alarm relays are configurable via the Alarm Voting menu to make relays 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 alerts can be 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 Scott Health amp Safety 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 using displayed menus and the keypad All configuration data is retained in non volatile memory during power interruptions The five button symbols below the display are magnetically activated using the supplied magnetic wand without opening the enclosure Ope
4. System SECURITY Contact Name Blind Mode NO Pass Code Unlocked Press EDIT to advance to next menu Press NEXT to go back to previous menu Press UP or DOWN to navigate cursor Figure 4 1 Relas 1 Relay 1 OR AND OUR Set Relay Logic Ch2 AL sa qu dii Chi Ri Chi R2 Chi R3 Relas 2 Relay 2 OR AND OUR Set Relay Logic ChA gt Fail Safe NO Ch2 R2 Horn STEADY e E Acknowledge NO Chi H2 Chi AS Horn Piezo Piezo On YES Horn ACK NO COMMUNICATIONS RTU ID 1 Clock Delays Startup Delay 695 Cal Delay 695 Time 98 34 22 Date 82 19 83 m Diagnostics WeDurut Zero Output Span Input Min Max Common Relays Discrete Relays Menu Structure of the 7200 Plus 39 of 62 OFF Delay Bm Low Trir NO Latching NO Channel 1 CONFIG Name User Info PUNIT 10 digits ero Span 109 Decimal Pts Channel Active YES Ch 1 CAL SETUP Zero Gas 9 0 Span Gas 50 0 Set UNITY Gain CAL Offset 0 009 CRL Gain 1 000 P N 087 0039 Rev E Aug 09 SCOT T 7200 Plus Instruction Manual 4 2 Data Display Screens The primary source of operator interface with the 7200 Plus is through the LCD Display Data can be monitored using any one of three screens Select the NEXT key to cycle between Data Displays screens Main Data Screen Ch Trend Screen Blind Mode Screen 29 H2S 29 een ET du 88 34 22 02 19703 SN NEXT NEXT Ala
5. Gain settings for each jumper position are as follows no jumper 1 right 7 middle 21 left 41 Multiple jumpers have an additive affect upon gain so the right and middle jumpers together provide a gain of 28 1 2 4 5 6 712 2 o e 390080 Ses m R A R A mA m 777 CH1 CAT BEAD CHZCAT BEAD PIN s x E N A 7 I l o I w gt gt z o m N 3ONY TVY8 ZHO Ef rav SLIOA gt g YOSNAS HO rav SLIOA YOSNIS ZHO OY Set Jumper with 50 Span gas to read 9 to 1 2V Figure 3 8 Coarse Gain Jumper Setting Further calibration of this sensor now requires only typical calibration as described in Paragraph 3 7 33 of 62 P N 087 0039 Rev E Aug 09 SCOT T 7200 Plus Instruction Manual 3 7 Calibration Calibration from the 7200 Plus should normally be performed on sensors only Typical calibration of remote transmitters should occur at the transmitter WARNING OPERATING A DETECTOR THAT HAS EXCEEDED ITS CALIBRATION DATE CAN CAUSE FALSE READINGS OF DETECTED GASES READINGS OBTAINED WHILE UNIT IS OUT OF CALIBRATION ARE INVALID AND COULD LEAD TO DEATH OR INJURY WARNING LOCAL ALARMS ARE INHIBITED IN THE 7200 PLUS WHILE IN CALIBRATION MODE VERIFY THE ENVIRONMENT IS CLEAN AND FREE OF HAZARDOUS GASES AND TOXINS OR HAVE MONITORING PERFORMED BY ANOTHER UNIT PRIOR TO CALIBRATING FAILURE TO DO SO COULD LEAD TO INJURY OR DEATH CAUTION THE CALIBRATION MODE IN THE 7200 PLUS SHOULD ONLY B
6. This Page Left Intentionally Blank 56 of 62 P N 087 0039 Rev E Aug 09 7200 Plus SCOT T Instruction Manual Appendix B Multiplying K Factors Multiplying K factors can be used to simulate response to a combustible in terms of a readily available compressed calibration gas such as propane in air These conversion factors are calculated estimates only They are intended to serve as a guide to show approximate typical response of a sensor to the particular gas needed for calibration Table B 1 and B 2 display K Factors of gases relative to propane calibration For measurements critical to determining a health or explosive flammable hazard a sensor should always be calibrated using the specific gas or vapor to be measured There is no other way to ensure reliable readings Too many parameters are involved to make any single simple conversion factor accurate WARNING FOR MAXIMUM SAFETY IN DETERMINING EXISTENCE OF AN EXPLOSIVE FLAMMABLE OR HEALTH HAZARD YOUR PARTICULAR INSTRUMENT SHOULD BE CALIBRATED USING THE SPECIFIC GAS VAPOR TO BE MEASURED IF YOUR INSTRUMENT HAS AN AGENCY APPROVED CERTIFICATION E G FACTORY MUTUAL CSA ETC FAILURE TO CALIBRATE ON THE SPECIFIC GAS HAZARD TO BE MONITORED MAY VOID THE CERTIFICATION THE RESULTS OBTAINED WHEN USING THE K FACTORS ARE APPROXIMATE AND MUST NOT BE INTERPRETED AS REPRESENTING HIGHLY ACCURATE LEL PERCENTAGES MULTIPLYING K FACTORS IS ADEQUATE FOR GENERAL DETECTION OF COMBUSTIBLE GAS
7. to 103 Full Scale 197 0 amp 1003 100 D2A Chan 1 31003 4 N A D2A Chan 2 31004 4 N A 10 bit value representing the D2A value of 0 to 1023 after all cal features are applied 51 of 62 P N 087 0039 Rev E Aug 09 SCOTT 7200 Plus Instruction Manual Table A 1 MODBUS Register and Function Code Summary Variable Code Alias Read Function Code Write Function Chan 1 Status 31005 4 N A Chan 2 Status 31006 4 N A 16 bit status words bit assignment for each channel ALARM1 BELOW ALARM2 BELOW ALARM3 BELOW ALARM1 LATCH ALARM2 LATCH ALARMS LATCH ALARMS ACTIVE CHANNEL DISABLED CHANNEL CAL BITO BIT1 BIT2 BITS BIT4 BITS BIT6 BIT7 BIT8 System Status Word 31007 4 N A 16 bit status word bit assignment for system status PIEZO_DRIVE BIT6 HORN_ACK BIT7 K1 HORN DRIVE BIT8 K2 HORN DRIVE BIT9 K1 HORN PULSE BIT10 K2_HORN_PULSE BIT11 K1_FAILSAFE BIT12 K2_FAILSAFE BIT13 K2 ACK BIT14 LOCK BIT15 Alarm Status Word 31008 4 N A 16 bit status word bit assignment for system status P N 087 0039 Rev E Aug 09 CHAN1 ALARM1 BITO CHAN1 ALARM2 BIT1 CHAN1 ALARMS BIT2 CHAN2 ALARM1 BIT3 CHAN2 ALARM2 BIT4 CHAN2 ALARM3 BIT5 RELAY_1 BIT6 REIAY 2 BIT7 52 of 62 7200 Plus SCOT T Instruction Manual Table A 1 MODBUS Register and Function Code Summary Variable Code Alias Read Function Code Write Functi
8. 6 Ammonia 0 7 Methyl Alcohol CH40 1 1 Benzene CcHe 1 5 Methyl Chloride CHsCI 0 7 Butadiene CaHs 1 5 Methylene Chloride CH2CI 1 5 Butane CaHio 1 1 Methyl Ethyl Ketone CHO 1 8 Cyclohexane CsH2 15 Methyl Fluoride 1 1 Dichloromethane CH2Clz iis Pentane CsHi2 1 3 Note 1 2 Dichloropropane CsHeCle 1 5 Propane CsHs 1 0 Difluoromethane 0 9 Propylene CsHe 1 2 Ethane C2He 0 8 Propylene Dichloride CsHeCle 1 5 Ethyl Alcohol C2HeO 1 1 Propylene Oxide CsHeO 1 4 Ethylene C2Ha 0 9 Styrene CsHs 3 95 Ethylene Oxide C2H4O 1 1 Toluene CzHs 1 7 Heptane C7His JP 4 gasoline 1 9 Vinyl Chloride C2HsCI 1 2 Hexane C eH 4 1 7 O Xylene CsHio 3 0 Notes 1 Check gas readings include 10 positive correction for calibration port calibration at 2000 cc per minute 2 Actual calibration field checks require use of factor shown on calibration gas cylinder to correct for actual concentration variations in calibration gas lots 58 of 62 P N 087 0039 Rev E Aug 09 SCOTT 7200 Plus Instruction Manual Table B 2 5 5V Sensor K Factors Span Gas 5 5V Sensor Type Gas Solvent Value Surrogate Gas P N 40011528 Standard LEL P N 40012111 Poison Resistant ACETALDEHYDE 45 1 N animes 1 40 ACETONE 33 FEN 40011528 ACETONE 33 je Ms 40011528 ACRYLONITRILE 42 tM EDU USES ACETYLENE 48 1 dee uui AMMONIA 45 Men 40011528 1 40 BENZENE 33 f id eb 40011528
9. Input 093 0436 Discrete Relay 093 0435 Discrete Relay 093 0434 Bridge Sensor Input 12 GND E 1 el 100 240 VAC DRY CONTACTS wo c uM WEE MEM 3 1 184 i 1785 10 30 Vdc power Dy contact input for 1 24 Vdc terminal for 24 Vdc power DA resistive SPDT Universal 100 input for primary noe ional remote optional 100db output for remote form C dry 240 Vac primary power or as back arm Reset Switch piezo annunciator devices such as contact relay power source I I I I I I I li i relays etc 35 mA Idiode snubber 13 must be tied to I I I I I lup to AC primary Shield wires or liransmitters lights loutputs Use GND terminal Ipower source Tie ground conduit runs i ITB5 GND to Earth lito protect from RFI Imax output Idevices when earth for proper I I sources Do not use li LI Iswitching inductive ishielding of input Io wires longer than 50i LLL loads 2____ signals ____ Figure 2 2 Motherboard 9 of 62 P N 087 0039 Rev E Aug 09 SCOT T 7200 Plus Instruction Manual e TB1 Terminals for DC power input DC power must be 10 30V DC max 3 Watts When connected without an AC power source at TB5 the DC power input is the primary power source for the 7400 plus When connected with an AC power source DC power inputted at TB1 is a backup in the event AC power input is lost CAUTION REGARDLESS OF AN AC POWER INPUT AT TBS POWER TO THE 7400 PLU
10. List SCOTT Acronym Definition Acronym Definition AC Alternating Current mA Milliamps A D Analog to Digital mm Millimeters ADC Analog to Digital Convertor MOV Metal Oxide Varistor American Standard Code for SS Information Interchange NG Net Appliedple C Common or the pole NC Normally Closed Relay Contact C Degrees Celsius NEC National Electrical Code CH Keane NEMA National Ke National Institute of Standards and CO Carbon Monoxide NIST Technology CPU Central Processing Unit NO Normally Open Relay Contact CSA Canadian Standards Association Oz Oxygen D A Digital to Analog PC Personal Computer DAC Digital to Analog Convertor PCB Printed Circuit Board dB Decibels PLC Programmable Logic Controller DC Direct Current ppm Parts per Million DCS Digital Control System R Resistance F Degrees Fahrenheit RFI Radio Frequency Interference GND Ground R H Relative Humidity HS Hydrogen Sulfide RTU Remote Telemetry Unit Hz TA RTV Room Temperature Vulcanization elastomer sealant Current SELV Safety Extra Low Voltage IEEE Institute of Flectronic amp Electrical TCP IP Transmission Control Engineers Protocol Internet Protocol VO Input Output VAC Volts Alternating Current LCD Liquid Crystal Display VDC Volts Direct Current LED Light Emitting Diode Vpk Peak Voltage LEL Lower Explosive Limit 5 of 62 P N 087 0039 Rev E Aug 09 SCO T T 7200 Plus
11. Non Condensing Altitude Up to 2000 Meters 6562 feet Housing Installation Categories NEMA 4X DIV 2 Groups A B C D Cat Il and pollution degree 3 NEMA 4x IP66 NEMA 7 DIV 1 Groups B C D with o ring in door to satisfy NEMA 4 Relays Common Form C dry contacts Standard 5 Amp for 28VDC and 250VAC Resistive Loads CAUTION APPROPRIATE DIODE DC LOADS OR MOV AC LOADS SNUBBER DEVICES MUST BE INSTALLED WITH INDUCTIVE LOADS TO PREVENT RFI NOISE SPIKES RELAY WIRING IS TO BE KEPT SEPARATE FROM LOW LEVEL SIGNAL WIRING FAILURE TO DO SO COULD CAUSE FAULTY RELAY ACTIVATION 21 of 62 P N 087 0039 Rev E Aug 09 SCO T T 7200 Plus Instruction Manual This Page Left Intentionally Blank 22 of 62 P N 087 0039 Rev E Aug 09 7200 Plus SCOT T Instruction Manual 3 Physical Installation 3 1 Installation Considerations 3 2 Mounting the 7200 Plus The standard 7200 Plus wall mounted unit is NEMA 4X rated The terminal cover must be installed with the bevel on top to prevent moisture from entering the internal components Two screws on the enclosure door must remain in place to maintain the rating of Class I Division 2 Groups A B C and D or non hazardous locations only Two 34 NPFT fittings are provided on the bottom side of the unit to route electrical connections and connect conduit Conduit runs should not be weight bearing Use provided mounting holes to wall mount the 7200 Plus Refer to Fi
12. SOUS 3 N A Chan 2 Span Divisor SIUS 3 N A Chan 2 Alarm 1 Real ere 3 N A Chan 2 Alarm 1 Divisor 91019 3 N A Chan 2 Alarm 2 Real LE 3 N A Chan 2 Alarm 2 Divisor 1018 3 N A Chan 2 Alarm 3 Real MS 3 N A Chan 2 Alarm 3 Divisor 41020 3 N A Binary Cal Data Chan 1 A2D MIN oe 3 N A Chan 1 A2D MAX Tee 3 N A Chan 1 D2A MIN aloa 3 N A Chan 1 D2A MAX uL 3 N A Chan 2 A2D MIN STE 3 N A Chan 2 A2D MAX 20028 3 N A Chan 2 D2A MIN Er 3 N A Chan 2 D2A MAX ee 3 N A Min and Max calibration points for the D A and A D converters Memory ASCII Strings User Info Chan 1 40401 40405 3 N A User Info Chan 2 40406 40410 3 N A 54 of 62 P N 087 0039 Rev E Aug 09 7200 Plus SCOT T Instruction Manual Table A 1 MODBUS Register and Function Code Summary Variable Code Alias Read Function Code Write Function 10 ASCII characters 2 per register assigned to the unit identifier as bytes EUNITS Chan 1 40411 40415 3 N A EUNITS Chan 2 40416 40420 N A 10 ASCII characters 2 per register assigned to the engineering units as read bytes Chan 1 ASCII Reading 40421 40423 3 N A N A Chan 2 ASCII Reading 40424 40426 6 ASCII characters 2 per register reflecting the display readout Firmware Version Version 40427 40428 3 N A 4 ASCII characters 2 per register reflecting the firmware version 55 of 62 P N 087 0039 Rev E Aug 09 SCO T T 7200 Plus Instruction Manual
13. The MODBUS option PCB P N 093 0438 adds both RS 232 and RS 485 MODBUS RTU slave ports NOTE FOLLOW CORRECT IEEE RS 232 AND RS 485 INSTALLATION GUIDELINES WHEN USING THE MODBUS INTERFACE OPTION Refer to Figure 2 12 RS 232 Connector Schematic NC no connect S1 NC 1 gt TXD 2 gt RXD 3 gt GND 4 gt NC 5 gt 3 d NC 6 gt RS 232 d Shorted to 8 7 a E Shorted to 7 8 JP1 selects either RS 232 NC 9 a JP2 or RS 485 operation z Fal we E JP2 installs RS 485 terminating e g S pi resistor end of cable only RS 485 Terminal TB1 RS 485 terminations Schematic NC no connect A Q Select S1 RS 232 terminations TB1 Ko 2 A t3 TIRX TB1 8 B RS 485 Transceiver RS 232 Transceiver NC for shield continuation S soet d sae 45 A 0010 1204 Assy 10 0253 T RX SS B Figure 2 12 MODBUS Interface PCB This optional PCB mounts to connectors on the upper left corner of the 7200 Plus Motherboard TB1 provides two pairs of T Rx terminals and a floating terminal for shield continuation to multi drop 7200 Plus s onto an RS 485 cable without doubling wires into the same screw terminals RS 232 interface is made by connecting to DB9 connector S1 Refer to the Appendix for a list of all MODBUS registers and their function codes 20 of 62 P N 087 0039 Rev E Aug 09 7200 Plus SCOT T Instruction Manual 2 2 Using the Keypad Navigation of the Menus displayed on the LCD is accomplished using the
14. Wire Transmitter Typical to Bridge Sensor Input PCB Figure 2 9 3 Wire Transmitter Typical to Bridge Sensor Input PCB Figure 2 10 4 20mA Analog Output PCB Figure 2 11 Discrete Relay PCB Figure 2 12 MODBUS Interface PCB Figure 3 1 Mounting Dimensions Figure 3 2 NEMA 7 Enclosure Figure 3 3 Sensor Voltage Adjustment Figure 3 4 Cat Bead Sensor Wiring to Bridge Sensor Input PCB Figure 3 5 Sensor Voltage Measurement Figure 3 6 Voltage Measurement Figure 3 7 Balance Adjustment Figure 3 8 Coarse Gain Jumper Setting Figure 3 9 Typical Calibration Setup Figure 3 10 Calibration Quick Guide Figure 4 1 Menu Structure of the 7200 Plus Figure 4 2 Data Display Screens Figure 4 3 Channel Setup Menu Figure 4 4 System Configuration Menus Figure 4 5 Relay Logic Setup SCOTT 10 11 12 13 14 15 16 17 18 20 23 24 28 29 30 31 32 33 35 37 39 40 41 44 46 P N 087 0039 Rev E Aug 09 SCE T T 7200 Plus Instruction Manual This Page Left Intentionally Blank vi P N 087 0039 Rev E Aug 09 7200 Plus SCO T T Instruction Manual List of Tables Table 1 1 Acronym Quick Reference List 5 Table 2 1 Configurable Relay Matrix 19 Table 3 1 Maximum Distance Between 6V Sensor Head and 7200 Plus 27 Table 5 1 Parts List 49 Table A 1 MODBUS Register and Function Code Summary 51 Table B 1 6V Sensor Multiplying K Factors 58 Table B 2 5 5V Sensor K Factors 59 vii P N 087 0039 Rev E Aug 09 SCOT T
15. front panel 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 dangerous if an operator acknowledged the horn AND the light since no indication of the high alarm condition remains 46 of 62 P N 087 0039 Rev E Aug 09 7200 Plus SCOT T Instruction Manual 4 4 1 2 Horn Piezo Menu The 7200 Plus Display PCB is equipped with a small audible piezo that chirps when keys are pressed providing an audible feedback to the operator The piezo also may be set to audibly indicate alarm conditions by entering YES into the Piezo On menu item This piezo will then mimic the Horn settings in the Relay Setup menus Refer to Paragraph 4 4 1 1 for more information Horn ACK menu item determines if the Horn Driver output may be acknowledged by an Alarm Reset Yes causes an Alarm Reset to silence the horn even though an alarm condition remains active 4 4 1 3 Clock Delays Menu The 7200 Plus monitors signals from sensors that may require varying times to stabilize after power is applied e StartUp Delay menu item allows 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 are for setting the correct time and date The 7200 Plus is equipped with a 24 hour clock a
16. h Alarm 2 Alarm 3 Channel 2 Alarm 3 LCD Contrast R6 tent o S SW1 SW5 are the magnetic s keys allowing operator interface UP DOWN NEXT EDIT RESET Figure 2 4 Internal Display Assembl 11 of 62 P N 087 0039 Rev E Aug 09 SCOT T 7200 Plus Instruction Manual 2 1 3 Input Options 2 1 3 1 Analog Input Option The Analog Input PCB P N 093 0433 option may be installed at P1 on the Motherboard Refer to Figure 2 5 R1 Ch1 100 ohm 4 20mA terminator R2 Ch2 100 ohm 4 20mA terminator aa 24VDC Refer to Figure 2 6 for transmitter wiring diagrams Figure 2 5 Analog Input PCB The Analog Input Option allows interfacing 7200 Plus to field transmitters with 4 20mA Terminals for CH1 and CH2 provide Channel 1 amp Channel 2 HI LOW terminals for receiving analog inputs and provide a 24 VDC excitation for powering external transmitters R1 R2 are 100 ohm precision socketed termination resistors between each channel s signal and 4 20mA input terminals Figure 2 6 displays typical wiring for both 2 wire and 3 wire transmitters Refer to the specific transmitter s User Manual for detailed wiring configurations 12 of 62 P N 087 0039 Rev E Aug 09 7200 Plus Instruction Manual SIGNAL 24VDC POWER 3 Wire Transmitter Typical 2 Wire Transmitter Typical Figure 2 6 External Transmitter Wiring 13 of 62 P N 0
17. the Controller primary power supply 17 of 62 P N 087 0039 Rev E Aug 09 SCOT T 7200 Plus Instruction Manual 2 1 5 Discrete Relay Option The Discrete Relay PCB P N 093 0435 option may be installed at P3 on the Motherboard CAUTION RELAYS ARE RATED FOR RESISTIVE LOADS INDUCTIVE LOADS SUCH AS CONTACTOR COILS OR MOTORS MAY CAUSE CONTACT ARCING WHICH EMITS RFI INTO THE SENSOR SIGNALS USE APPROPRIATE SNUBBERS AND MOV S ACROSS INDUCTIVE LOADS AND KEEP WIRING AWAY FROM SIGNAL WIRES FAILURE TO DO SO COULD RESULT IN RFI AND NEGATIVELY EFFECT EQUIPMENT PERFORMANCE Refer to Figure 2 11 1 x a Wiring of Relay K1 Wiring of Relay K4 1 Normally Open 1 Normally Open K1 1 K1 10 Upper Terminal l Upper Terminal Block Block K1 3 1 K1 12 Lower Terminal Common I Lower Terminal Common Block Block K1 2 K1 11 Middle Terminal Middle Terminal Block Normally Closed i Normally Closed Wiring of Relay K2 i Wiring of Relay K5 Normally Open Normally Open K1 4 I K1 13 Upper Terminal Upper Terminal Block 1 Block K1 6 1 K1 15 Lower Terminal Common 1 Lower Terminal Common lock 1 Block K1 5 1 K1 14 Pp I Middle Terminal Middle Terminal Q Block 1 Block s Normally Closed 1 Normally Closed Bi SS SS EER Ee ME Ef SAS ka ses BEE ses ses SE OE EE 3 Wiring of Relay K3 Wiring of Relay KG v D I Normally Open Normally Open 2 K1 7 i K1 16 Upper Terminal Uppe
18. 2 Internal Display Assembly ee ee 2 1 3 Input OPtONS ee Re RA ee ee ee 2 1 3 1 Analog Input Option reete entree 2 1 3 2 Cat Bead Sensor Input Option 2 1 3 2 1 Cat Bead Sensor Input Wiring Diagrams 2 1 4 4 20 mA Analog Output seeeeeeeeess 2 1 5 Discrete Relay Option sssseessssss 2 1 6 MODBUS RS 232 RS 485 Interface Option 2 2 Using the Keypad cocccccccnccconncocccccccccnncnccnanancnnncnnnnnns 2 3 SpecificatiOns see RA ee RR ee ee ee 3 Physical InstallatiON iese ee RR ee ee 3 1 Installation Considerations ie ee ee neeese 3 2 Mounting the 7200 Plus ceceeeeeeeeeeeeeeneeeeeeeees 3 2 1 Optional NEMA 7 Explosion Proof Enclosure 3 3 Electrical Configurations sssss 3 3 1 Electrical GOODS ananasen 3 3 2 Optional External Power Supply 3 4 Evaluating Wire Length and Size 3 5 Sensor Head Wiring uic dd 3 6 Cat Bead Sensor Initial Setup 3 7 lecce PIDE 3 7 1 Determining Span Gas to Use sssss 3 7 2 Sensor Calibration Procedure 4 OP E a aA E E P N 087 0039 Rev E Aug 09 SCOT T 7200 Plus Instruction Manual 4 1 Menu SKU
19. 63 TOM 40011528 VINYL CHLORIDE 41 4 EE 40011528 O XYLENE 46 E 40011528 O XYLENE 68 Pie pene 40012111 22 LEL P N 087 0039 Rev E Aug 09 62 of 62 SCOTT Health amp Safety Monroe Corporate Center PO Box 569 Monroe NC 28111 Telephone 1 800 247 7257 FAX 704 291 8330 www scotthealthsafety com Printed in the USA Copyright O 2009 SCOTT All Rights Reserved
20. 7200 Plus Instruction Manual This Page Left Intentionally Blank viii P N 087 0039 Rev E Aug 09 7200 Plus SCOT T Instruction Manual 1 Safety and General Information WARNING ALL INDIVIDUALS WHO HAVE OR WILL HAVE RESPONSIBILITY FOR USING OR TESTING THIS PRODUCT MUST READ AND UNDERSTAND THE CONTENTS OF THIS MANUAL THE PRODUCT WILL PERFORM AS DESIGNED ONLY IF USED AND TESTED IN ACCORDANCE WITH THE MANUFACTURER S INSTRUCTIONS FAILURE TO FOLLOW MANUFACTURER S INSTRUCTIONS WILL RENDER THE WARRANTY AND APPROVALS NULL AND VOID FAILURE TO FOLLOW THESE INSTRUCTIONS MAY ALSO RESULT IN SERIOUS INJURY OR DEATH 1 1 Important Notices Scott Health and Safety can take no responsibility for use of its equipment if it is not used in accordance with the instructions If further operational or maintenance details are required but not provided in this manual contact Scott Health and Safety or their agent Scott Health and Safety shall not be liable for any incidental or consequential damages in connection with any modifications errors or omissions in this manual While every effort has been made to ensure accuracy in this owner s manual no responsibility can be accepted for errors or omissions Additionally industry standards codes and legislation are subject to change This publication is not intended to form the basis of a contract and the company reserves the right to amend the design content and specifications of the dete
21. 87 0039 Rev E Aug 09 SCOT T 7200 Plus Instruction Manual 2 1 3 2 Cat Bead Sensor Input Option The Cat Bead Sensor Input PCB P N 093 0434 option may be installed at P1 on the Motherboard Refer to Figure 2 7 Jumpers JP3 Ch1 and JP4 Ch2 must be placed in the position of the the cat bead source either Sensor or Transmitter 4 20 mA 100 ohm Terminating Resistors mA C A BEES ONA CAT EAD R1 Ch1 or R2 Ch2 must be installed only e JPA when a transmitter is the input source GET Mm Jumpers JP1 Ch1 and JP2 Ch2 are Course Gain Jumpers that are set for the gain of the Bridge Amplifier R6 R14 R6 Ch1 and R14 Ch2 are the Sensor Balance Voltage Adjustment Pots and must be set to 0 4V with Zero gas applied to a sensor R3 R11 R3 Ch1 and R11 Ch2 are the Sensor Balance Voltage Adjustment Pots and must be set to proper voltage between the R amp A terminals 3O9NV 1V8 LHO 39NV 1V8 ZHO fo fav SLIOA HOSNZIS LHO fav SLIOA YOSNAS ZHO Refer to Figures 2 8 and 2 9 for transmitter wiring diagrams Refer to Paragraph 3 6 for Cat Bead Sensor Initial Set up NE dd Figure 2 7 Catalytic Bead Sensor Input PCB The Cat Bead Sensor Input PCB allows cat bead sensors to be connected directly to the 7200 Plus without additional signal conditioning or transmitters Each channel is equipped with a bridge amplifier balance potentiometer and an adjustable switchi
22. Adapter Board P N 023 4027 Sensor Calibration Port rav SLIOA HOSN3IS LHD fav SLIOA YOSN3S ZHO Take Measurement at Sensor Adapter Board NE p Figure 3 5 Sensor Voltage Measurement 30 of 62 P N 087 0039 Rev E Aug 09 7200 Plus SCOT T Instruction Manual 6 With the voltmeter s negative lead on the A terminal of the channel being tested connect the positive lead to TP1 Ch1 or TP2 Ch2 mA CH1 CAT BEAD e w gt 5 Z 6 m rav SLIOA rav SLIOA YOSNIS ZHO E YOSNAS IHO y Figure 3 6 Voltage Measurement 31 of 62 P N 087 0039 Rev E Aug 09 SCOTT 7200 Plus Instruction Manual 7 With zero air on that sensor adjust the Balance potentiometer for 4 volts at the test point P N 087 0039 Rev E Aug 09 DE mA 1 CAT BEAD N o Y o I 3 S z S m ar ip I rav SLIOA YOSN3S LHO Figure 3 7 A mA CH2 CAT BEAD JP1 Siz 11 fav SLIOA YOSN3S ZHO Adjust to 0 4V with Zero Air on Sensor Balance Adjustment 32 of 62 7200 Plus SCOT T Instruction Manual 8 Apply 50 span gas to the sensor and allow the test point voltage to stabilize Two volts 100 input to the A D Converter and 4 volts 0 Therefore 1 2 volts 50 Place the 3 position Coarse Gain jumper into the position which reads between 9 volts and 1 2 volts on the test point with 5096 gas on the sensor
23. BENZENE 50 Z ein 40012111 Note 1 3 BUTADIENE 49 MEL 40011528 Note 1 3 Y2 Propane BUTADIENE 30 22 LEL 40012111 N BUTANE 58 pou 40011528 ISO BUTANE 61 CERE SD US ISO BUTYLENE 60 dE AUGE BUTYL ACETATE 56 Z EN 40011528 N BUTYL ALCOHOL 40 ED 40011528 CHLOROBENZENE 33 e EED 40011528 Y Propane CHLOROBENZENE 33 Eo EE 40012111 1 40 CYCLOHEXANE 35 EE 40011528 59 of 62 P N 087 0039 Rev E Aug 09 SCOTT 7200 Plus Instruction Manual Span Gas 5 5V Sensor Type Gas Solvent Value Surrogate Gas P N 40011528 Standard LEL P N 40012111 Poison Resistant 1 40 CYCLOHEXANONE 45 SE 40011528 DIMETHYL 33 Y2 Propane 40011528 FORMAMIDE 22 LEL 14 9 DIETHYL ETHER 35 x ED AUO ne 1 49 N DECANE 56 ED 40011528 ETHANE 45 pied 40011528 1 49 ETHYL ACETATE 34 d EN 40011528 1 40 ETHYL ACRYLATE 40 DEL 40011528 ETHYL ALCOHOL 57 PEU 40011528 Y2 Propane ETHYL ALCOHOL 43 22 LEL 40012111 14 9 ETHYL BENZENE 40 EE 40011528 ETHYLENE 47 d Rn OLIE ETHYLENE OXIDE 54 EED USE ETHYLENE OXIDE 56 FEN 40012111 1 40 HEPTANE 36 FEN 40011528 1 40 N HEXANE 36 Ya Cue 40011528 N HEXANE 56 CERE 40012111 HEXANE 61 EE 40011528 ISOPROPYL 65 196 Propane 40011528 ALCOHOL 4595 LEL 60 of 62 P N 087 0039 Rev E Aug 09 SCOTT 7200 Plus Instruction Manual Span Gas 5 5V Sens
24. CIUFS sti PEE ed ee 39 4 2 Data Display Sereeris ia 40 4 2 1 Main DAA STEENS EEE Ge 40 4 2 2 Channel Trend OC s oed ida ei di dde t died adv 40 4 2 3 Blind Mode Sel Belt credo cepere tea a ede dide ovde eitis 40 4 3 Channel Setup Menus cusco 41 4 3 1 Alarm Setup Menu ds ces Ceo Sp Core CIRCE Case EDE RED EDE exes ln RS GN 42 4 3 2 Channel Config MENU s ecu uie tees cece aij e ta etg oreet s 42 4 3 3 Cal Setup MENU rui oido tote ton ape abd tread den cod ed 43 4 4 System Configuration Menus cesses 44 4 4 1 System Setup MO EE ERE 45 4 4 1 1 Relay Setup and Relay Logic Menus iss ees ee ee RR ee 45 4 4 1 2 Horn Piezo MERE sessie oto ede de de ee ge ee ee se nt 47 4 4 1 4 Glock Delays MGM ci ee tL d p DR Ld ue SLE EDAM IRE 47 4 4 1 4 Diagnostic MODs hec rtt pipe 47 4 4 2 System Secure Men sae EE Se Un a 48 5 Parts List and Maintenance see ee ee Re ee eene 49 5 1 Parts ist EE NE EE 49 5 1 1 SCORE se ER ida 49 Appendix A MODBUS Register and Function Code Summary 51 Appendix B Multiplying K Factors sesse esse ees see ee ee AA ae ee nen 57 P N 087 0039 Rev E Aug 09 7200 Plus Instruction Manual List of Figures Figure 2 1 External Display Figure 2 2 Motherboard Figure 2 3 Power Distribution Figure 2 4 Internal Display Assembly Figure 2 5 Analog Input PCB Figure 2 6 External Transmitter Wiring Figure 2 7 Catalytic Bead Sensor Input PCB Figure 2 8 2
25. E USED WHEN LOCAL CALIBRATION OF A MONITORING IS NOT POSSIBLE CALIBRATING AN INPUT SIGNAL AT MORE THAN ONE LOCATION WILL CAUSE INACCURATE READINGS AND COULD LEAD TO INJURY OR DEATH Scott Health amp Safety recognizes the potential of the 7200 Plus and remote monitors as a life saving device when operated and maintained correctly As such verifying proper operation of the 7200 Plus and remote monitors in the form of Span calibration is essential to ensure the 7200 Plus and remote monitors perform as intended in a potentially hazardous environment The frequency at which Span calibration occurs is best determined based on local regulatory standards company policies and industry best practices Scott Health amp Safety is not responsible for setting policies or practices Calibration of the 7200 Plus and remote monitors occurs in two stages Zero calibration is performed to establish baseline readings of atmospheres that are known to be free of toxic or combustible gases Span calibration is performed to ensure the monitor detects target gases within specified operating parameters Span calibration is the adjustment of the 7200 Plus and remote monitors response to match a known concentration of gas Sensors can lose sensitivity through normal degradation exposure to high gas concentrations or sensor poisoning Accurate calibration can be achieved only if specific concentrations of the correct gases are used Span calibration should be perform
26. ES BUT ARE NOT ADEQUATE FOR ACCURATE GAS ANALYSIS WHEN IN DOUBT AS TO THE APPROPRIATE CALIBRATION GAS TO USE OR PROCEDURE CONSULT SCOTT H amp S OR AN AUTHORIZED SERVICE CENTER The multiplying K factors in Table B 1 may be used to calibrate a 6 0V Gold Bell sensor head with propane when gases other than propane are to be detected The multiplying K factors in Table B 2 may be used to calibrate a Scott Stainless Steel sensor head with propane when gases other than propane are to be detected 6 0V Example Using Scott Health amp Safety s standard Propane gas cylinder P N 077 0241 42 996 LEL to calibrate a 6 0V sensor for Hexane multiply 42 996 LEL Propane by the Hexane multiplying K factor of 1 7 as given in Table B 1 to obtain 7396 LEL Hexane Adjust the 7200 Plus span gas value to 7396 LEL as described in Paragraph 4 3 3 before beginning calibration 5 5V Example Using 196 Propane 4596 LEL gas cylinder to calibrate a 5 5V sensor for Hexane Adjust the 7200 Plus span gas value to 6196 LEL as described in Paragraph 4 3 3 before beginning calibration 57 of 62 P N 087 0039 Rev E Aug 09 SCOT T 7200 Plus Instruction Manual Table B 1 6V Sensor Multiplying K Factors Combustible Gas Vapor ED Combustible Gas Vapor aud Acetone CsHeO 1 3 Hydrogen H 0 8 Acetylene C2H 1 4 Isopropyl Alcohol CsHeO 1 5 Acrylonitrile CsHsN 0 97 Methane CH4 0
27. FEY S COT T Instruction Manual 7200 Plus Two Channel Controller HEALTH amp SAFETY Series 7200 Plus Channel 1 Channel 2 WARN warn ALARM ALARM A3 Fault O raut Keypad v Alarm Cal Reset Keypad buttons behind door Power 100 240 V Hz 45A WWW SCOTTHEALTHSAFETY COM C or 10 30 voc 3 WATTS cus Classified to CSA C22 2 NO 152 for combustibles detection Class Mae 236219 READ amp UNDERSTAND MANUAL WARNING READ AND FOLLOW THE ENTIRE CONTENT OF THIS MANUAL PRIOR TO USE FAILURE TO DO SO MAY RESULT IN SERIOUS INJURY OR DEATH COPYRIGHT 2009 SCOTT ALL RIGHTS RESERVED P N 087 0039 Rev E 08 09 SCE T T 7200 Plus Instruction Manual This Page Left Intentionally Blank P N 087 0039 Rev E Aug 09 7200 Plus Instruction Manual Table of Contents 1 Safety and General Information sssssssss 1 1 Important Notices asociar 1 2 Certifications and ApprovValS ooooococcccccnccccccccccoccccncncnns 1 3 Warnings Cautions and NoteS 1 3 1 General Warnings and Cautions 1 4 General Rules of Use iicet ehh 1 5 Warranty auci ede c a d xe nda eo dia x RR ai 1 5 1 Contacting Scott Health amp Safety 1 6 Acronyms Quick Reference sesse ee ee 2 MODE NON ie EG GE EG Bae eee bee et 2 1 Physical Gomporiebls iii EE Gee cee se 2 1 1 Motlierbodf sao ets AA tbe e e ee 2 1
28. Head to be connected Figure 3 3 Sensor Voltage Adjustment 28 of 62 P N 087 0039 Rev E Aug 09 7200 Plus SCOT T Instruction Manual CAUTION SENSORS MAY BE DAMAGED BY OVER VOLTAGE CONDITIONS SCOTT H amp S RECOMMEND THE VOLTAGE ADJUST POTENTIOMETER SCREWS BE COVERED BY A DOLLOP OF RTV OR SIMILAR MATERIAL AFTER COMPLETION OF THIS PROCEDURE OVERVOLTAGE MAY CAUSE DAMAGE TO SENSORS 4 Remove system power and connect sensor wires to the A C R terminals as shown in Figure 3 3 depending on system configuration rav SLIOA YOSN3S HO rav SLIOA MOSN3S ZHO U1 U3 O 2 m 177 Scott Stainless Steel 5 5 V or 6V Sensor Head mA CH1 CAT BEAD JONVIVE 1HO rav SIOA MOSN3S LHO rav SIOA MOSN3S ZHO y NN Gold Bell 6V Sensor Head TT HE Figure 3 4 Cat Bead Sensor Wiring to Bridge Sensor Input PCB 29 of 62 P N 087 0039 Rev E Aug 09 SCOT T 7200 Plus Instruction Manual 5 Reapply system power and confirm correct voltage across each sensors A amp R terminals NOTE IF SENSOR HEAD IS REMOTE AND ADDITIONAL WIRE LENGTH HAS BEEN ADDED IT WILL BE NECESSARY TO MEASURE THE EXCITATION VOLTAGE AT THE SENSOR HEAD TO COMPENSATE FOR I R VOLTAGE LOSSES IN THE WIRING OR If Gold Bell Sensor Head If Scott Sensor Head wires are long measure wires are long measure voltage at sensor voltage at sensor head using a Sensor head Adapter Board o o Head S S Sensor Sensor
29. Mode Press EDIT Press EDIT to continue to continue show for 5 seconds Mibi 7 7 2 E FR O C H L Limit Exceeded aobo Successfu 1 If ZERO Cal OK Figure If ZERO Cal Fails show for 5 seconds ee 5 to 2 Gain Limit Exceeded ae If SPAN Cal Fails Calibration Quick Guide 3 10 37 of 62 SPAN CAL Successful If SPAN Cal OK Back to Data Display a Channel 1 Pem H25 REMOWE CAL GAS 20 6 Channel 2 pot 02 CAL Purge time period inhibits alarm relays P N 087 0039 Rev E Aug 09 SCO T T 7200 Plus Instruction Manual This Page Left Intentionally Blank 38 of 62 P N 087 0039 Rev E Aug 09 7200 Plus Instruction Manual 4 Operation 4 1 Menu Structure Main Data Screen Ch Trend Screen Blind Mode Screen 2 Channel 1 29 ppm H2S em H2S 3 re Press Next to Channel 2 toggle Data rct 02 19 6 Screens Blind mode may be locked from the Security menu for applications where live readings should not be displayed 08 34 22 02 19 03 Alarm Status OK gt Press EDIT L to enter Channel 1 shown SETUP Channel 1 SETUP Channel 1 WeChannel 2 Alarn I System Alarm 3 Security w Configure CAL Setur Channel Menus SCOTT Alarm 1 shown Alarm 1 Setup Set Point 20 ON Delay Bs System Menus System SETUP WeRelas 1 Relay 2 Horn Piezo Comm Port Clock Delays Diagnostics
30. PLOSION HAZARD SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITIBILITY FOR CLASS 1 DIVISION 2 EXPLOSION HAZARD DO NOT REPLACE FUSE UNLESS POWER HAS BEEN SWITCHED OFF OR THE AREA IS KNOWN TO BE HAZARD FREE EXPLOSION HAZARD DO NOT DISCONNECT EQUIPMENT UNLESS POWER HAS BEEN SWITCHED OFF OR THE AREA IS KNOWN TO BE HAZARD FREE USE A PROPERLY RATED CERTIFIED AC POWER MAINS CABLE INSTALLED AS PER LOCAL OR NATIONAL CODES FOR DC POWERED UNITS DC POWER MUST BE FROM A SELV RATED SOURCE A CERTIFIED AC POWER MAINS 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 CERTIFIED 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 I FOR ON AND O FOR OFF 2 of 62 P N 087 0039 Rev E Aug 09 SCOTT 7200 Plus Instruction Manual CAUTIONS CLEAN USING ONLY A DAMP CLOTH WITH NO SOLVENTS DO NOT USE HAND CLEANERS LOTIONS SOAPS OR ANY CLEANING PRODUCTS CONTAINING SILICONE PRIOR TO OR WHILE HANDLING CATALYTIC BEAD SENSORS FAILURE TO DO SO MAY POISON SENSORS 1 4 General Rules of Use POWER MUST BE ON TO WORK The 7200 Plus Controller will only operate while powered on SHOCK HAZARD Disconnect or turn off power before servicing this instrument NEMA 4X wall mount models should be fitted wi
31. S MUST BE GROUNDED TO EARTH USING TERMINAL 3 OF TB5 FAILURE TO DO SO COULD CAUSE COMPONENT DAMAGE e TB2 Terminals for a remote alarm reset switch If enabled in the menu options Relay 2 may be acknowledged and reset using a remote alarm reset switch Relay 1 will always remain unaffected to ensure an indication of an alarm remains e J2 24VDC output for the optional 100db piezo annunciator e TB3 24 VDC universal output power supply with up to 350mA available to power optional remote devices such as alarms horns lights relays etc 24VDC is only available when AC power is applied at TB5 to the 7200 Plus Refer to Figure 2 3 for distribution of AC and DC power Universal Input Power Supply 24 VDC 100 240 Out VAC In To Local Controller Circuits TB5 To optional Analog Input PCB 24VDC located at P2 Q L1 L2 ao Loc pn L AUX J 100 240 VAC SUPPLY POWER 45A 50 60 Hz INPUT OUTPUT AC POWER EE only with AC Primary Power Figure 2 3 Power Distribution e TB4 Output connections for standard relays K1 and K2 Each relay is 5A resistive SPDT form C dry contact CAUTION RELAYS ARE RATED FOR RESISTIVE LOADS INDUCTIVE LOADS SUCH AS CONTACTOR COILS OR MOTORS MAY CAUSE CONTACT ARCING WHICH EMITS RFI INTO THE SENSOR SIGNALS USE APPROPRIATE SNUBBERS AND MOV S ACROSS INDUCTIVE LOADS AND KEEP WIRING AWAY FROM SIGNAL WIRES FAILURE TO DO SO COULD RESULT IN RFI AND NEGATIVELY EFFECT EQUIPMENT PERFORMANCE
32. UP DOWN CAL NEXT EDIT and ALARM RESET magnetic keys Press where used in this manual refers to activating the magnetic key with the magnetic wand Upon entering a menu a pointer controlled by the UP DOWN keys indicates the selected item 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 ABCDEFGHIJKLMNOPQRSTUVWXYZ NJ abcdefghijklmnopqrstuvwxyz blank space amp 0123456789 lt gt EDIT places a cursor under the item and UP DOWN scrolls through each allowed entry The NEXT key moves the cursor to the 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 returns to the previous menu one menu at a time and will eventually return the LCD to the data display ALARM RESET notifies the 7200 Plus that the user acknowledges an alarm and when pressed will deactivate any optional audible alarms Flashing indicators will change from flashing to a steady state 2 3 Specifications Supply Voltage 10 30VDC Alternate 3 Watts max or 100 240VAC Primary 50 60Hz 0 45 amp max 20 Watts steady state Power Consumption Minimum 1 5 Watts 10 30VDC Maximum 12 Watts 24VDC Temperature Range 25 to 50 C 13 to 122 F Humidity Range 0 to 9096 R H
33. ctor without notice 1 2 Certifications and Approvals UL1604 CSA File 236219 CSAC222No04 CSA C22 2 No 0 UL 913 CSA C22 2 No CSA C22 2 No 25 1010 1 UL1203 CSA C222 No 213 CSA C22 2 No 30 CSA C222 No 157 CSA C22 2 No 142 ISA S12 B The 7200 Plus enclosure is rated for Class I Division 2 Groups A B C and D or non hazardous locations only 1 of 62 P N 087 0039 Rev E Aug 09 SCOT T 7200 Plus Instruction Manual 1 3 Warnings Cautions and Notes Throughout this document warnings cautions and notes have been interspersed to draw attention to potentially unsafe hazardous or unique situations that require user attention Each warning caution or note is labeled and quickly identified using an icon WARNING INDICATES A POTENTIALLY HAZARDOUS SITUATION WHICH IF NOT AVOIDED COULD RESULT IN DEATH OR SERIOUS INJURY CAUTION INDICATES A POTENTIALLY HAZARDOUS SITUATION WHICH IF NOT AVOIDED MAY RESULT IN MINOR OR MODERATE INJURY IT MAY ALSO BE USED TO ALERT AGAINST UNSAFE PRACTICES NOTE HIGHLIGHTS VARIOUS INSTANCES WHERE AN ATTENTION TO DETAIL IS CRITICAL TO PRODUCT PERFORMANCE 1 3 1 General Warnings and Cautions The following list of warnings and cautions pertain to the general use and care of the 7200 Plus Failure to follow these warnings and cautions may result in death injury or poor equipment performance WARNINGS EQUIPMENT NOT USED AS PRESCRIBED WITHIN THIS MANUAL MAY IMPAIR OVERALL SAFETY EX
34. e following e If the Sensor Head is mounted more than 18 from the 7200 Plus encase all wire splices in a junction box Place conduit seals Crouse Hinds EYS 216 or equivalent between the 7200 Plus and the junction box e Use AMP or equivalent parallel or butt type splices for all wire connections e Ground the junction box e Trim any excess wire and connect the detector head s black white and red wires to terminal block TB1 terminals R C and A on the Cat Bead Input PCB as shown in Figure 3 3 27 of 62 P N 087 0039 Rev E Aug 09 SCOT T 7200 Plus Instruction Manual 3 6 Cat Bead Sensor Initial Setup Each channel must be configured to match the sensor with which it will operate This procedure must be performed at the time of install on each new bridge sensor 1 Prior to connecting remote sensors apply power to the system 2 Remove the 7200 Plus terminal cover WARNING LIVE VOLTAGE IS PRESENT TAKE APPROPRIATE ELECTRICAL SAFETY PRECAUTIONS TO PREVENT THE RISK OF ELECTRICAL SHOCK FAILURE TO DO SO COULD RESULT IN SERIOUS INJURY OF DEATH 3 Measure the voltage between each channel s A and R terminals and set the Voltage Adjust potentiometers for the correct sensor excitation voltage R C A mA mA S77 CH1 CAT BEAD CH2 CAT BEAD JPA GET 3ONY 1V8 CHO Ed o w gt e 2 z o m d rav SLIOA YOSNIS HO rav SLIOA MOSN3S ZHO Adjust to 6 0V or 5 5V depending on which Sensor
35. ed when a new sensor is installed Scott Health amp Safety recommends a daily Zero calibration be performed prior to each day s use and when the monitor displays a reading other than its baseline reading in an atmosphere known to be free of any toxic or combustible gases When an atmosphere is not known to be free of toxic or combustible gases a Zero Air calibration cylinder may be used 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 34 of 62 P N 087 0039 Rev E Aug 09 7200 Plus SCOT T Instruction Manual Follow these 7200 PLUS sensor calibration guidelines e Calibration from the 7200 Plus should normally be performed on sensors only Typical calibration of remote transmitters should occur at the transmitter e Calibration accuracy is only as good as the calibration standard accuracy Scott H amp S recommends calibration standards with NIST National Institute 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 Calibrate using zero air to ensure the highest accuracy Scott Stainless Steel Sensor Head Gold Bell Sensor Head Gas Calibration Port accepts 1 8 NPT Male fitting Removable Hex Socket Pipe Plug JN Hose
36. eters and having only the Blind Mode screen available for viewing Refer to Figure 4 2 40 of 62 P N 087 0039 Rev E Aug 09 SCOTT 7200 Plus Instruction Manual 4 3 Channel Setup Menus Both of the two monitored channels are customized using the menus for each individual channel as shown in Figure 4 3 From any of the Data Display screens press EDIT to enter the Setup Menu The firmware revision of the 7200 Plus is displayed to the right of Setup Each channel has three customizable alarms and can be configured and calibrated individually from the other channel Press EDIT to enter Channel 1 shown Alarm 1 shown SETUP Channel 1 SETUP Alarm 1 Setur Channel 1 Alarm 1 B Set Point 28 Channel 2 cum nd Alarm 2 ON Delay Bs stem Alarm 3 OFF Delay am Security Configure Low Trir HO CAL Setur Latching HO Channel 1 CONFIG W Hanme User Info EUHIT 18 digits Zero SFan 1aa Decimal Pts a Channel Active YES Ch 1 CAL SETUP Zero Gas 8 8 Span Gas 58 8 Set UNITY Gain CAL Offset 6 468 CAL Gain 1 000 Figure 4 3 Channel Setup Menu 41 of 62 P N 087 0039 Rev E Aug 09 SCOT T 7200 Plus Instruction Manual 4 3 1 Alarm Setup Menu Alarms 1 2 and 3 have identical menus Typical applications often have A1 set at a WARN level A2 at a HIGH level and A3 at a negative FAULT level However it is important to understand there is no functional difference between A1 A2 and A3 Since their configuration menu
37. gure 3 1 80 Ee BI uc 203 45 mm 80 52 mm HEALTH amp SAFETY 1 e Series 7200 Plus Channel 1 Channel 2 WARN O Fen HZ WARN t 3 15 ALARM O ALARM Channel 2 80 01 mm A3 Fault O J A3lFault A y Magnetic Y ed p Alarm Keypad 4 y ee Keypad buttons behind door Power 100 240 V 50 60 Hz 45A VIVAN SCOTTMEALTMSAFETY COM WATTS SIN 7200 a Cu micros REN 236219 0 92 23 37 mm Install terminal cover as shown with beval up to prevent leakage Front View Side View 1 2 Clear Hole Conduit Entry Optional 226 57 mm Bottom View 8 92 Figure 3 1 Mounting Dimensions 23 of 62 P N 087 0039 Rev E Aug 09 SCE T T 7200 Plus Instruction Manual 3 2 1 Optional NEMA 7 Explosion Proof Enclosure The NEMA 7 wall mount enclosure is an optional aluminum case for mounting the 7200 Plus in potentially hazardous environments It is rated for DIV 1 amp 2 Groups B C D Refer to Figure 3 2 43 0 a A 620 gt 330 2 mm 158 75 mm 14 25 8 0 361 95 mm 203 2 mm Front View Side View 9 87 250 7 mm Bottom View Figure 3 2 NEMA 7 Enclosure 24 of 62 P N 087 0039 Rev E Aug 09 7200 Plus SCOT T Instruction Manual 3 3 Electrical Configurations 3 3 1 Electrical Codes To meet prevailing electrical codes use conduit and all other materia
38. hen choosing the location of the transmitter and its power supply the size and length of the power supply wires become an issue if the wiring s voltage drop would cause the transmitter s input voltage to drop below its minimum operating voltage The distance 4 20 mA signals can travel is dependent upon several factors including the cable gauge DC power supply voltage level and impedance of the input of the receiving device Assuming a nominal 24 VDC power supply if powered by the 7200 Plus maximum total loop resistance is 750 ohms in a 3 wire mode NOTE SCOTT HEALTH amp SAFETY CONTROLLERS HAVE AN INPUT RESISTANCE OF 100 OHMS The maximum signal loop resistance that can be connected to a transmitter s output is 800 ohms 24 VDC 400 ohms 12 VDC In almost all cases the wire size chosen for the power supply leads will be more than adequate for the 4 20 mA signal lead For example an 18 AWG wire provides a 4 20 mA signal lead wiring distance of approximately 34 000 feet NOTE MAXIMUM SIGNAL LOOP RESISTANCE IS DEFINED AS THE SUM OF THE 4 20 MA SIGNAL WIRE RESISTANCE THE RECEIVER S INPUT RESISTANCE NORMALLY 250 OHMS AND THE RESISTANCE OF THE COMMON GROUND WIRE BETWEEN THE TRANSMITTER AND POWER SUPPLY 26 of 62 P N 087 0039 Rev E Aug 09 7200 Plus SCOT T Instruction Manual 3 5 Sensor Head Wiring Each 5 5V Sensor Head is supplied with 6 of wire for direct mounting to the transmitter housing Each 6V Sensor Head i
39. in performance under this warranty and as a condition precedent to any duty of SCOTT the purchaser must return such products to SCOTT a SCOTT authorized agents or a SCOTT authorized service center Any product returned to SCOTT shall be sent to SCOTT HEALTH amp SAFETY Attn Warranty Claim Dept 4320 Goldmine Road Monroe NC 28111 This warranty does not apply to any malfunction of or damage to THE PRODUCTS resulting from accident alteration misuse or abuse THIS WARRANTY IS MADE IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE IN ADDITION SCOTT EXPRESSLY DISCLAIMS ANY LIABILITY FOR SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES IN ANY WAY CONNECTED WITH THE SALE OR USE OF SCOTT PRODUCTS AND NO OTHER FIRM OR PERSON IS AUTHORIZED TO ASSUME ANY SUCH LIABILITY 1 5 1 Contacting Scott Health amp Safety To contact Scott Health amp Safety call fax email or write to Scott Health amp Safety 4320 Goldmine Road Monroe NC 28110 Website www scotthealthsafety com Phone 800 247 7257 FAX 704 291 8330 4 of 62 P N 087 0039 Rev E Aug 09 7200 Plus Instruction Manual 1 6 Acronyms Quick Reference Throughout the duration of this manual several acronyms are used Provided in Table 1 1 is a quick reference chart to quickly identify any acronym that may be unfamiliar to users Table 1 1 Acronym Quick Reference
40. input Calibration Cup Regulator 1 Liter per Minute for 103 Liter Tanks Hose input a EN 4 Hose P Regulator for 17 Liter Tanks Typical calibration equipment shown Sensor location and mounting may make optional equipment necessary such as flow meters copper tubing barbed inserts or tube fittings Calibration Gas Cylinder Consult an authorized service center or your Scott H amp S representative for help Figure 3 9 Typical Calibration Setup 35 of 62 P N 087 0039 Rev E Aug 09 SCOT T 7200 Plus Instruction Manual 3 7 1 Determining Span Gas to Use Typical calibrations are performed using methane gas as the Span Gas For accurate readings of other types of gas the Span Gas must match the gas to be measured However to calibrate a sensor for detection of other gases a surrogate gas propane can be used Appendix B details how to apply a K factor to the propane surrogate gas to obtain detection of other gas types 3 7 2 Sensor Calibration Procedure To perform a calibration from the 7200 Plus perform the following NOTE CAL MODE AUTOMATICALLY EXITS IF NO KEYS ARE ACTIVATED AFTER 5 MINUTES 1 To enter Cal Mode from any data display press the DOWN CAL key then use the UP DOWN keys to select the channel to calibrate 2 Apply Zero gas to the sensor to be calibrated with an appropriate Zero calibration standard Wait approximately five minutes or until readings are stable at
41. ls required for electrical wiring in hazardous areas Install wiring according to National Electrical Code NEC Articles 501 517 WARNING NON METALLIC ENCLOSURES ARE NOT GROUNDED BY METAL CONDUIT TO GROUND INTERNAL COMPONENTS A PROPER EARTH GROUND MUST BE CONNECTED TO TB5 GND TERMINAL FAILURE TO DO SO CAN CAUSE ELECTRICAL GROUNDS AND DAMAGE ELECTRONIC COMPONENTS OR RISK OF ELECTRICAL SHOCK WARNING NON METALLIC 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 FAILURE TO DO SO CAN CAUSE ELECTRICAL GROUNDS AND DAMAGE ELECTRONIC COMPONENTS OR RISK OF ELECTRICAL SHOCK 3 3 2 Optional External Power Supply Some applications require 24VDC power in excess of the 12 watts supplied by the 7200 Plus NEC Class 2 50W external supplies are available for Division 1 part 093 0469 and Division 2 part 093 0468 potentially hazardous area installations and both also include a NEMA 4X weather rating For more information contact Scott H amp S 25 of 62 P N 087 0039 Rev E Aug 09 SCOT T 7200 Plus Instruction Manual 3 4 Evaluating Wire Length and Size The minimum AWG wire size that can be used to connect the power supply to the transmitter is determined by the output voltage of the power supply the maximum current drawn by the transmitter and the voltage drop that occurs across the wiring W
42. mulating inputs Main Data Screen Ch Trend Screen 23 Channel 1 29 pem H25 EER E a Press Next to Channel 2 toggle Data are 19 8 S 22775 Press EDIT A to enter Channel 1 shown SETUP Channel 1 P WeChannel 2 Sustem Security System Menus gt Ourut Zero System SETUP 1 F Relay 1 Relay 1 OR AND OUR WeRelas 1 Set Relay Logic Ch2 Ri 2 1 Relas 2 Fail Safe NO Ch2 A2 wed j Horn Piezo Horn PULSE Ch2 AS o L Comm Por Chi Ri L ke 1 Clock Delays Chi AZ m I Diagnostics Chi A3 O 1 Relay 2 Relay 2 OR AND OUR Set Relay Logic Ch2 Al Ww 1 Fail Safe NO Ch2 A2 X Horn STEADY ENG as i Acknowledge NO Chi B2 i Chi AS System SECURITY Horn Piezo WeContact Name Piezo On VES H Blind Mode NO Horn RCK NO Pass Code H Unlocked 1 i COMMUNICATIONS i RTU ID 1 H H H Clock Delays H WeStartur Delay 60s Tine aY agrio Date 02 19 03 1 i u B i Diagnostics H H Figure 4 4 System Configuration Menus 44 of 62 P N 087 0039 Rev E Aug 09 7200 Plus SCOT T Instruction Manual 4 4 1 System Setup Menu The System Setup menu allows the user to navigate to further system options affecting all channels setting up relays setting a remote ID and diagnostics Setting the Remote ID allows setting an RTU address for the optional slave MODBUS serial p
43. nd calendar Time of day must be entered in 24 hour mode For example 6 00 00 PM is indicated as 18 00 00 4 4 1 4 Diagnostics Menu WARNING LOCAL ALARMS ARE INHIBITED IN THE 7200 PLUS WHILE IN DIAGNOSTICS MODE VERIFY THE ENVIRONMENT IS CLEAN AND FREE OF HAZARDOUS GASES AND TOXINS OR HAVE A MONITORING PERFORMED BY ANOTHER UNIT PRIOR TO ENTERING DIAGNOSTICS FAILURE TO DO SO COULD LEAD TO INJURY OR DEATH The Diagnostics menu is useful for testing standard and optional Input Output devices such as relays and 4 20mA outputs e Output Zero Output Span DAC value digital to analog converter menu items are set at the factory to calibrate optional 4 20mA Output boards If field adjustment is required monitor the 4 20mA output and set the Output Zero DAC value for 4mA on each channel then set the Output Span DAC value for 20mA on each channel These menu items may also be used to drive 4 20mA into receiver devices without stimulating sensor inputs e Input Min Max ADC analog to digital converter menu items are set at the factory with default values for each channel of 200 to 1000 counts These settings may be utilized to affect what input values provide ZERO and SPAN readouts For example if an application required 8mA input to read ZERO at 400 counts an Input Min setting of 400 would accomplish this Common Relays menu item allows manual activation of the common relays and optional local audible piezo e Discrete Relays menu i
44. ng 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 7200 Plus into a FAULT condition upon sensor failure or removal This option may also be configured to accept 4 20mA inputs for mixing a cat bead sensor and a 4 20 mA current loop into the same board Placing either channel s 2 position SENSOR 4 20mA jumper JP3 or JP4 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 Precision 100 ohm resistors are taped to the inside of the 7200 Plus enclosure NOTE WHEN INSTALLING A CAT BEAD SENSOR A ONE TIME ONLY INITIAL SETUP IS REQUIRED REFER TO PARAGRAPH 3 6 FOR MORE INFORMATION 14 of 62 P N 087 0039 Rev E Aug 09 7200 Plus SCOT T Instruction Manual 2 1 3 2 1 Cat Bead Sensor Input Wiring Diagrams Display Assembly 1 SONV BE ZH Note JP3 Ch1 or JP4 Ch2 must be set to the correct position of the input source If a 4 20mA loop is in use R1 Ch1 or R2 Ch2 must have a 100 ohm resistor installed COMMON SIGNAL AC Power Source In 2 Wire Transmitter Typical Figure 2 8 2 Wire Transmitter Typical to Bridge Sensor Input PCB 15 of 62 P N 087 0039 Rev E Aug 09 SCOT T 7200 Plus
45. ning the enclosure door provides access to the touch keypad Refer to Figure 2 1 and Figure 2 4 2 1 Physical Components Refer to Figure 2 1 SCOTT HEALTH amp SAFETY Series 7200 Plus Channel 1 Channel 2 WARN O 29 rus O WARN lt A ALARM O A N ALARM Channel 2 Pot 02 A3 Fault O A3 Fault Magnetic i ypa out 4 2 Reset Keypad buttons behind door detection Class DIV 2 Groups A B C D 2362 19 READ amp UNDERSTAND MANUAL Power 100 240 V 50 60 Hz 45A WWW SCOTTHEALTHSAFETY COM e or 10 30 VDC 3 WATTS S N 7200 C US Classified to CSA C22 2 NO 152 for combustibles Figure 2 1 External Display 7 of 62 P N 087 0039 Rev E Aug 09 SCO T T i 7200 Plus Instruction Manual 2 1 1 Motherboard The 7200 Plus Motherboard is the interface between the Display CPU assembly and all other system I O devices Six terminals located at the bottom of the motherboard provide connections for input power output power and connection to optional devices A Universal Switching Power Supply located at the top middle of the motherboard regulates AC input power for distribution to DC components Refer to Figure 2 2 8 of 62 P N 087 0039 Rev E Aug 09 7200 Plus SCOT T Instruction Manual Universal Switching Power Supply Connections to J1 and J3 are not covered by CSA certifications Display Assembly Input Options 4 20mA Output Option Discrete Relay Option 093 0433 Analog
46. on Memory Floating Point NOTE RETURNED AS 15 BIT 28 COMPLEMENT WITH 5 OVER UNDERAGE APPLIED THEREFORE THIS MUST BE CONSIDERED WHEN SCALING VALUES TO BE DISPLAYED AT THE WORKSTATION THE FOLLOWING EQUATION MAY BE USED TO DETERMINE A VALUE FOR DISPLAY MOES UsValuel Sp ae 2800 Value 1 Zero Value Span Value Zero Value 0 05 DisplayValue 32767 FP Value Chan 1 33001 4 N A FP Value Chan 2 33002 4 N A Memory Reals NOTE 41001 41040 REAL REPRESENTS FLOAT VALUE WITHOUT THE DECIMAL POINT SUCH THAT 123 4 IS RETURNED AS 1234 DECIMAL DIVISOR IS RETURNED AS I 10 100 OR 1000 FOR DECIMAL POSITION OF 1 2 3 OR 4 WHERE 123 4 WOULD RETURN THE DEVISOR VALUE OF 10 Chan 1 Zero Real 41001 3 N A Chan 1 Zero Divisor 100 3 N A Chan 1 Span Real 41003 3 N A Chan 1 Span Divisor 21009 3 N A Chan 1 Alarm 1 Real 0003 3 N A Chan 1 Alarm 1 Divisor 00 3 N A Chan 1 Alarm 2 Real or 3 N A Chan 1 Alarm 2 Divisor anes 3 N A Chan 1 Alarm 3 Real SE 3 N A Chan 1 Alarm 3 Divisor ae 3 N A 53 of 62 P N 087 0039 Rev E Aug 09 SCOTT 7200 Plus Instruction Manual Table A 1 MODBUS Register and Function Code Summary Variable Code Alias Read Function Code Write Function Chan 2 Zero Real E 3 N A Chan 2 Zero Divisor ME 3 N A Chan 2 Span Real
47. or Type Gas Solvent Value Surrogate Gas P N 40011528 Standard LEL P N 40012111 Poison Resistant METHYL ETHYL 33 Y Propane 40011528 KETONE 22 LEL METHYL ETHYL 43 1295 Propane 40012111 KETONE 2296 LEL METHYL ISO BUTYL 36 12 Propane 40011528 KETONE 2296 LEL Y Propane 40011528 2 PYRROLIDONE 38 22 LEL 1 Propane 40011528 METHANOL 51 45 LEL 1 Propane METHANOL 51 45 LEL 40012111 1 Propane 40011528 METHYL STYRENE 53 45 LEL Y2 Propane 40011528 MINERAL SPIRITS 62 22 LEL MONOCHLOROBENZE 33 12 Propane 40011528 NE 2296 LEL Y2 Propane 40011528 NAPTHA V M amp P 46 2296 LEL Y2 Propane 40011528 NITRO PROPANE 34 22 LEL Y2 Propane 40011528 ISO OCTANE 40 2296 LEL Y2 Propane ISO OCTANE 61 2296 LEL 40012111 Y Propane 40011528 N OCTENE 56 22 LEL Y2 Propane 40011528 OCTENE 47 22 LEL Y Propane 40011528 PENTANE 33 22 LEL Y Propane 40011528 ISO PENTANE 33 22 LEL 196 Propane 40011528 ISOPRENE 52 45 LEL 61 of 62 P N 087 0039 Rev E Aug 09 SCOTT 7200 Plus Instruction Manual Span Gas 5 5V Sensor Type Gas Solvent Value Surrogate Gas P N 40011528 Standard LEL P N 40012111 Poison Resistant PROPANE 49 1 nda 40011528 PROPYLENE 57 MET sum VERE STYRENE 43 pe D 40011528 STYRENE 63 ie EE 40012111 TETRAHYDROFURAN 57 l rd 40011528 TETRAHYDROFURAN 50 EN 40012111 TOLUENE 36 pied 40011528 TOLUENE 60 EN 40012111 VINYL ACETATE
48. ort This slave port may be used to transfer 7200 Plus data to a host device such as a PC PLC DCS or even other Scott Health amp Safety Controllers such as the Sentinel 16 Controller The slave port is addressable allowing many 7200 Plus controllers to connect to a single RS 485 cable Refer to Figure 4 4 4 4 1 1 Relay Setup and Relay Logic Menus Relay 1 and Relay 2 setup and logic menus are identical except that the Relay 2 setup menu has an acknowledge feature for control of an audible device All other Relay 1 amp Relay 2 features are identical and are described only once e Set Relay Logic opens the Relay Logic Menu Each relay can be configured to activate based upon a combination of alarms Users may opt to have any of the three alarms for the two channels or any combination of those alarms activate the relay using selection boxes for three logic qualifiers e OR conditions mean that a situation where any of the OR checked alarms occurring will activate the relay OR when selected works in combination with the checked AND boxes to form a combination of alarms that will activate a relay e AND conditions mean that a situation where all of the AND checked alarms occurring will activate the relay AND when selected works in combination with the checked OR boxes to form a combination of alarms that will activate a relay e OVR when selected works independently from the AND amp OR qualifiers Any alarm with OVR checked will acti
49. otherboard Assembly PCB 093 0446 5 1 1 Scott Repairs For quick and effective service of your instrumentation and to reduce time spent on repairs the SCOTT Instruments Service Department requires a Return Maintenance Authorization number be issued prior to any product being shipped for service repairs Contact the Service Department at Phone 1 800 247 7257 Fax 1 704 291 8330 Monday Friday 8 30 AM to 5 00 PM EST e mail techsupport scotths us tycoint com www scotthealthsafety com 49 of 62 P N 087 0039 Rev E Aug 09 SCO T T 7200 Plus Instruction Manual This Page Left Intentionally Blank 50 of 62 P N 087 0039 Rev E Aug 09 7200 Plus Instruction Manual SCOTT Appendix A MODBUS Register and Function Code Summary Table A 1 MODBUS Register and Function Code Summary Variable Code Alias Read Function Code Write Function Read Write Coils Alarm Ack Reset 2001 1 5 NOTE AFTER WRITING A TRUE TO THIS REGISTER THE 7200 PLUS AUTOMATICALLY RETURNS IT TO FALSE Read Only Discretes Chan 1 Alarm 1 12001 2 N A Chan 1 Alarm 2 12002 2 N A Chan 1 Alarm S FLT 12003 2 N A Chan 2 Alarm 1 12004 2 N A Chan 2 Alarm 2 12005 2 N A Chan 2 Alarm S FLT 12006 2 N A Relay 1 12007 2 N A Relay 2 12008 2 N A Read Only Registers A2D Raw Chan 1 31001 4 AS A2D Raw Chan 2 31002 4 ue 10 bit value representing the A2D value of 0 to 1023 for 25
50. r Terminal Block I Block Ka Common 1 REIS Common Lower Terminal i Lower Terminal Block 1 Block K1 8 1 K1 17 Middle Terminal Middle Terminal Block i Normally Closed Normally Closed Figure 2 11 Discrete Relay PCB This optional PCB adds six 5 amp form C relays Relays K1 K2 and K3 are for Channel 1 Relays K4 K5 and K6 are for Channel 2 Table 2 1 shows the relationship of the Optional relays with respect to the integrated alarms and motherboard relays of the 7200 Plus Optional relays will mirror the integrated alarms in that activation of an alarm will trip an installed optional relay as shown in Table 2 1 Motherboard relays K1 and K2 must not be confused with the optional relays Motherboard relays are programmable as described in Paragraph 4 4 1 1 to activate based on a user specified combination of activated alarms 18 of 62 P N 087 0039 Rev E Aug 09 7200 Plus SCOT T Instruction Manual Table 2 1 Configurable Relay Matrix Alarms Optional Relays Motherboard Relays Channel 1 Alarm 1 Ch1A1 K1 K1 As Programmed Channel 1 Alarm 1 Ch1A2 K2 K1 As Programmed Channel 1 Alarm 1 Ch143 K3 K1 As Programmed Channel 2 Alarm 1 Ch2A1 K4 K2 As Programmed Channel 2 Alarm 2 Ch2A2 K5 K2 As Programmed Channel 2 Alarm 3 Ch2A3 K6 K2 As Programmed 19 of 62 P N 087 0039 Rev E Aug 09 SCOT T 7200 Plus Instruction Manual 2 1 6 MODBUS RS 232 RS 485 Interface Option
51. rm Status OK channel 2 la 7 A 4 The Blind Mode screen is displayed when selected from the Security menu The display shows Alarm status but does not show live readings Figure 4 2 Data Display Screens 4 2 1 Main Data Screen The Main Data screen simultaneously displays information from both channels at once Values are shown with their Eunits tag as well as with a bar graph Arrows below the bars indicate alarm trip point values making it easy to identify channels at or near alarm The direction of the horizontal 45 degree arrow side points indicates either a HIGH or LOW trip Left and right hand arrows located at the ends of each bar graph point towards the associated Channel Alarm LED s on the front panel Refer to Figure 4 2 4 2 2 Channel Trend Screen The Trend screen displays information from a single channel at one time 30 minutes of data is displayed in a graphical line charted against alarm set points Alarm set points are shown with dashed lines representing A1 A2 and A3 Viewing of different channels is accomplished by activating the NEXT key Refer to Figure 4 2 4 2 3 Blind Mode Screen The 7200 PLUS Blind Mode screen does not allow viewing of channel engineering unit values It only indicates the system s alarm status and time date Some applications require only alarm status be displayed and prefer monitored values not be shown A Security menu option allows locking all configuration param
52. s are identical only one is shown in Figure 4 3 e Set Point is entered in engineering units and determines the value where the alarm trips For example if a channel monitors 0 50 ppmH2S 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 196 of full scale back through the set point for the alarm to auto reset e ON Delay OFF Delay entries allow ON and OFF time delays affecting 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 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 NOTE LED INDICATORS ON THE FRONT PANEL ARE ALARM 1 YELLOW AND ALARM 2 AND 3 RED Discrete LED indicators on the front panel indicate the statu
53. s of each alarm 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 4 3 2 Channel Config Menu Channel Config menu allows configuration of all variables for the selected channel including Name Eunit Zero and Span values number of decimal points to display and whether the channel should be active or not NOTE EACH CHANNEL MENU IS IDENTICAL AND MUST BE SET INDIVIDUALLY OPTIONS SELECTED FOR CHANNEL 1 WILL NOT EFFECT CHANNEL 2 AND VICE VERSA Name allows the user to give the channel a unique name typically of the gas or toxin the channel is detecting e Eunit allows the user to give the channel a unique measurement value for example ppm or 42 of 62 P N 087 0039 Rev E Aug 09 7200 Plus SCOT T Instruction Manual e Zero and Span values are specified by the user to identify the range of Eunits being measured on a channel from the 4 20mA signal For example if a channel is measuring 0 10ppm chlorine the Zero value should be 0 000 and the Span value 10 00 NOTE ZERO AND SPAN VALUES SHOULD ALWAYS BE ENTERED USING FOUR DIGITS IN THIS MENU REGARDLESS OF OPTIONAL DECIMAL POINT SETTINGS e Decimal pts sets the number of digits to display beyond the decimal point for the channel di
54. s supplied with 18 of wire allowing it to be mounted on the transmitter housing either directly or by a short section of 34 conduit Both types of Sensor Heads can have a three conductor cable spliced to the attached wiring for increased distances between the 7200 Plus and the Sensor Head location The wiring attached to the Sensor Head is already sealed and requires no additional sealing to conform to NEC requirements for explosion proof installations as long as the detector head is mounted no further than 18 from the transmitter NEC Article 501 5 a 1 Table 3 1 shows the maximum distances 6V Gold Bell Sensor Heads may be separated using a three conductor cable with various wire gauges NOTE THE 5 5V SCOTT HEAD DRAWS FAR LESS CURRENT ALLOWING FOR MUCH GREATER LENGTHS OF WIRE FOR EXAMPLE USING 18 AWG THE MAXIMUM DISTANCE IS 1600 FEET 488M The added detector head wiring must meet prevailing electrical codes for hazardous area installations that specify conduit sealing explosion proof fittings and special wiring methods NOTE THE DETECTOR HEAD S SAFETY GROUND WIRE MUST THE SAME SIZE AS THE OTHER TRANSMITTER WIRES Table 3 1 Maximum Distance Between 6V Sensor Head and 7200 Plus 6V Sensor Head Gold Bell LEES CE 12 0 0023 106 32m 14 0 0031 80 24m 16 0 0059 42 13m 18 0 0080 31 9m When installing conduit and wiring from the Sensor Head to the 7200 Plus adhere to th
55. splay limited to zero to four digits At zero digits a reading of 0 ppm is displayed as 0 while at 4 digits the reading is displayed as 0 000 Conversely a reading of 100 ppm would be displayed as 100 at zero digits and 100 0 at four digits e Channel Active is set to either yes or no depending on whether the channel is being utilized When No is selected alarms are inactive on that channel and a line will be drawn though the channel on the LCD display 4 3 3 Cal Setup Menu The Calibration Setup Menu supports push button 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 7200 Plus Cal Mode feature should not be used Options available in the Cal Setup menu include e Zero Gas allows users to set the Zero Gas value e Span Gas allows users to set the Span Gas value e Set Unity Gain resets all calibration data making Cal Offset O and Cal Gain 1 43 of 62 P N 087 0039 Rev E Aug 09 SCOT T 7200 Plus Instruction Manual 4 4 System Configuration Menus Several system level options are available that effect the 7200 Plus and are not channel specific are shown in Figure 4 4 These include System Setup Security and a Diagnostic menu to test relay and analog I O without sti
56. tem allows manual activation of the optional Discrete Relay boards 47 of 62 P N 087 0039 Rev E Aug 09 SCOT T 7200 Plus Instruction Manual 4 4 2 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 number 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 NOTE GIVE CAREFUL CONSIDERATION BEFORE LOCKING THE 7200 PLUS MENUS IF THE 4 DIGIT PASS CODE IS LOST FORGOTTEN OR OTHERWISE UNAVAILABLE THE FACTORY MUST BE CONSULTED 48 of 62 P N 087 0039 Rev E Aug 09 7200 Plus SCOT T Instruction Manual 5 Parts List and Maintenance 5 1 Parts List Table 5 1 Parts List Part Description Scott P N 7200 Plus in NEMA 4X Enclosure 093 0431 7200 Plus in NEMA 7 Enclosure 093 0432 Dual Channel 4 20mA Input 093 0433 Dual Bridge Sensor Input 093 0434 Discrete Alarm Relay Board 6 5A Form C 093 0435 Relays Dual 4 20 mA Output 093 0436 10 baseT Ethernet with MODBUS TCP Protocol 093 0437 RS 232 RS 485 MODBUS RTU Addressable 093 0438 Interface 100db Piezo Audible Alarm 093 0439 Fuse 2 AMP 093 0445 M
57. th a locking mechanism after installation to prevent access to high voltages by unauthorized personnel LIMIT OF CERTIFICATION 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 3 of 62 P N 087 0039 Rev E Aug 09 SCOT T 7200 Plus Instruction Manual 1 5 Warranty Scott Health amp Safety SCOTT a division of Tyco International warrants it s 7200 Plus Controller PRODUCTS THE PRODUCTS to be free from defects in workmanship and materials for a period twelve 12 months from the date of original manufacture by SCOTT This warranty applies to all components of THE PRODUCTS SCOTT s obligation under this warranty is limited to replacing or repairing at SCOTT s option THE PRODUCTS shown to be defective in either workmanship or materials To maintain the warranty THE PRODUCT must be installed and maintained in accordance with the operating and maintenance instructions include with THE PRODUCT Only personnel of SCOTT or when directed by SCOTT authorized SCOTT agents are permitted to perform warranty obligations This warranty does not apply to defects or damage caused by any repairs of or alterations to THE PRODUCTS made by owner or any third party unless expressly permitted by SCOTT product manuals or by written authorization from SCOTT To obta
58. the LCD display then press the EDIT key to perform the Zero calibration 3 If the Zero calibration is successful Cal Mode automatically proceeds to the Span check 4 Apply Span gas to the sensor to be calibrated that matches the selected value set in the Cal Setup Menu Wait approximately five minutes or until readings are stable at the LCD display then press the EDIT key to perform the Span calibration NOTE REFER TO PARAGRAPH 4 3 3 FOR INFORMATION ON SETTING OR VERIFYING THE SPAN GAS VALUE 5 If the 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 36 of 62 P N 087 0039 Rev E Aug 09 7200 Plus SCOTT Instruction Manual From any Data Display Optional Hold the UP key for 5 secs 2 panes to enter the Cal Mode Information mm Screen and view Offset Gain Channel 2 19 8 constants and A D live counts reading live readin9 Eunits 4 4 12 bit Counts xxxx CAL Sean Value 50 0 Press CAL key SELECT CAL CHANNEL Channel 1 Channel 2 Hold UP key for 5 secs NEXT to Exit EDIT to Select EDIT Set Sean Value ffset 0 000 Gain 1 000 NEXT Return to Cal Hold UP key for 5 secs APP1Y ZVAL APP1Y SUAL Press Select channel Eunits Press NEXT to exit Eunitz NEXT press Edit live readin9 eunits live readin9 eunits to exit EDIT to Set ZERO EDIT to Set SPRN NEXT SPAN CAL Mode NEXT EXIT CAL
59. vate the relay upon occurrence of the alarm For the relay to activate based on checked qualifiers the logic formula is The total of all AND checks plus any of the OR checks or any single OVR check Refer to Figure 4 5 45 of 62 P N 087 0039 Rev E Aug 09 SCOT T 7200 Plus Instruction Manual the total of all AND checks plus any of the OR checks or any single OVR check For Relay 1 to activate with the logic populated in the Figure the following would have to occur Ch2A1 and Ch1A1 must both be active with either Ch2A2 or Ch1A1 active the total of all AND checks plus any of the OR checks or Ch2A3 active any single OVR check or Ch1A3 active any single OVR check Figure 4 5 Relay Logic Setup e Fail Safe controls relay activation for the common relays Failsafe On causes these relays to de energize during alarm conditions and energize when there is no alarm With Failsafe active a power failure forces the relay contact to the alarm position e Horn controls how activating this relay will affect the horn driver circuit connected to J2 on the motherboard Choices are No 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 Acknowledge ON not allowed on Relay 1 allows Relay 2 to be deactivated during alarm conditions by selecting the ALARM RESET key on the
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