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7800 Controller - User Manual

1. gt vin 18 Q16 EZU KA 3 v k Q17 A a a ais T S JP1 determines if this 8 channel Q14 028 C Analog Output PCB provides 6 8 outputs for CH s 1 8 or 9 16 ZE S La 2 PCB assemblies are required as for 16 channels Q12 Za C2 au 5 amp z J1 amp J2 are interch ble 12C an ca of 2 are interchangable Q10 we Q 4 TI 7 connectors used to add option m S PCB assemblies to the ST 71 E e Q9 CON Jo bh a 3 AO PE a ore je 2 Al Ref Adj allows trimming voltage cy c7 El onTP1 2 048 volts provides og 20mA 4196 outputs with 100 a R lt of full scale readings c 6y S R26 aS tg e CRI 8 ve K ou C3 C6 af ST 71 mA OUTPUT BOARD Q ta Assy 10 0167 15 c PCBi0010 1121 Revo cy gt Qt po 24 VDC power for output red current loops must be Connect to O O O DD DD DE tous supplied through TB2 DC OUT 10 LO LO LO LO LO LO LO Connect to main l O PCB on I O PCB Bi terminals 10 amp 12 of TB2 S Lo ol 12992999 len TB2 OE SES EEG 8 Channel 4 20mA Output Option 4410 0167 Figure 3 7 Scott Saf
2. 10 60 gt s 9 10 gt lt 9 60 gt Il i e KG A SIDE VIEW O O O 5 22 O FRONT VIEW i L La 8 Y Note Panel cut out 5 25 X 9 20 RACK PANEL MOUNT 19 RACK SPREADER PLATES amp PANEL MOUNT BEZAL NOT SHOWN Figure 6 1 Scott Safety 38 087 0021 Rev F Model 7800 Users Manual Revision E 6 2 093 0279 NEMA 4X WALL MOUNT FIBERGLASS ENCLOSURE The MODEL 7800N4 shown in Figure 6 2 is a fiberglass NEMA 4X wall mount enclosure Seven 8 channel I O option PCB s such as analog input or discrete relays may be mounted inside this enclosure Itis suitable for mounting outdoors but an above mounted weather deflector shield is recommended Weight is approximately 17 pounds Figure 6 3 provides important warning information concerning correct grounding procedures for non metallic enclosures Conduit entries are not provided so installers may place entries as needed Bottom or lower side areas are recommended Care must be taken to avoid drilling into circuit boards mounted inside the enclosure Properly ground the enclosure and follow national and local electrical codes re 43 16 10 00 z E M 6 AR 1 ay we a NLI 8 50 br Note 4 mounting holes are 31 diameter SHOCK HAZARD ADD LOCKING DEVICE TO C
3. 0 Therefore 1 2 volts 50 Place the 3 position Coarse LEL Gain jumper into the position which reads between 8 volts and 1 2 volts on the test point with 50 LEL gas on the sensor Gain settings for each jumper position are as follows no jumper 1 LOW 7 MED 21 HI 41 Multiple jumpers have an additive affect upon gain so the LOW and MED jumpers together provide a gain of 28 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 MODEL 7800 s electronic Cal Mode feature described in section 2 2 1 0010 1158 ASSY 10 0191 CATBEAD 8 CH INPUT A H 1 0 0 1 9 1 91 649 8 149 A 1 El BI l JP9 sets for Ch s 1 8 or 9 16 JP2 JP4 en EE tel OA EJ E E 6 Up to 4 10 0192 x a 2 input modules may be installed Dual CATBEAD El O 4 2voc TP m k CH B SENSOR VOLTS 9 ADJUS Ch 2 Ch 4 Ch 6 Ch 8 tow Disconnect power A f MED A CH s 2 4 6 8 10 12 14 or 16 before removing m B e i HIGH YO or installing modules 32 Sa LEL BALANCE LI Lago B ADJUS 2 ci JP5 JP7 8 C 4 2vDc TP CH A SENSOR VOLTS ADJUS LON GAIN CH s 1 3 5 7 9 11 13 or 15 Ch 1 Ch 3 Ch 5 Ch 7 HigH JUMPER CH A BALANCE ADJUS 10 0192 Dual Channel CATBEAD Modules plug into sockets on Main terminal board Not required for 4 20mA channels
4. 2 COMM2 RXA 3 COMM1 RXB 4 COMM2 RXB 5 COMM1 TXA 6 COMM2 TXA 7 COMM1 TXB 8 COMM2 TXB 9DCIN 10 DC OUT JR 11 DCIN 12 DC OUT x COMM1 Master COMM2 Slave TB1 COMM1 Maste r COMM2 Slave CTOMM1 Maste COMM2 Slave To next RS 485 Device 0 volt PS common connected together on all RS 485 devices Notes 1 Recommended RS485 cable Belden 9841 2 wire and 9842 4 wire or equivalent 2 0 volt PS common points should always be connected together when Master Slaves are not powered from the same DC power supply 3 Shown in 2 wire mode with all JP1 jumpers installed For 4 wire mode remove all JP1 jumpers 4 Terminators installed only in end of line RS 485 devices Figure 5 1 Scott Safety 33 087 0021 Rev F Model 7800 Users Manual Revision E 5 1 MODBUS SLAVE REGISTER LOCATIONS The following tables describe the MODEL 7800 s modbus slave database Any portion of this data may be read by a modbus master device such as a PC PLC or DCS Since the modbus port is RS 485 many MODEL 7800s may be multi dropped onto the same cable Memory Integer ASCII Notes ASCII may be read 2 characters at a time or in strings using a multiple register read Sixteen character channel tag name Type Channel First Last Read FC Write FC Notes Channel Tag 1
5. 100 ohm Res Sockets Plug In 100 ohm R Install only if channel is 4 20mA input Ri Internal controller ckts OD 6 Sensor wiring Ch 1 shown NO For 4 20mA inputs use 3 amp 5 7 i REF ANA and do not install 10 0192 module R C A are from Catalytic bead sensors 4 20mA may be applied to LEL Sensor any channel s C amp A terminals by addition of 100 ohm resistor h 1 Ch 9 Typical R1 R8 and setting LEL 4 20mA jumper to 4 20mA OST 8 Channel CATBEAD Sensor Option 10 0191 10 0192 Figure 3 5 Scott Safety 26 087 0021 Rev F Model 7800 Users Manual Revision E 3 1 6 OPTIONAL 4 20mA ANALOG OUTPUT BOARD 093 0270 An optional 10 bit 4 20mA analog output board shown in Figure 3 7 may be connected to the IC bus Each channel s output will transmit 4mA for 0 readings and 20mA for 100 readings Loop drive capability depends upon the level of the MODEL 7800 s primary DC power supply With at least 20 volts DC primary power they 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 Note This PCB requires nominal 24VDC power be connected to TB2 terminals 1 amp 2 as shown in Figure 3 7 Suitable power is available from the MODEL 7800 Main I O board s TB2 terminal 10 amp 12 see Figure 3 1 Since the PCB has 8 channels two are required for 16 channel applications JPI configures the outputs for channels groups 1 8 or 9 16
6. ANY AND ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ii ANY OBLIGATION LIABILITY RIGHT CLAIM OR REMEDY IN CONTRACT OR TORT WHETHER OR NOT ARISING FROM SCOTT SAFETY 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 Scott Safety unless in writing signed by a duly authorized officer of Scott Safety WARNING Because this instrument is used to detect and monitor materials and conditions which are listed by OSHA or others as potentially hazardous to personnel and property the information in this manual must be fully understood and utilized to ensure that the instrument is operating properly and is both used and maintained in the proper manner by qualified personnel An instrument that is not properly calibrated operated and maintained by qualified personnel is likely to provide erroneous information which could prevent user awareness of a potentially hazardous situation for the instrument user other personnel and property If after reading the information in this manual the user has questions regarding the operation application or maintenance of the instrumen
7. Display Alm HO Entry menu Piezo Horn Relay System Setur RADIO CONFIG Serial Ports 966 MHZ Slave ID al HOP Channel xx Slave Baud 9600 System ID xx Parity NONE Mode CLIENT UART Timer B S Mastr TO BS MS Mastr PR B35Bm5 Echo ACK off MB LCL Radio Setur Serial Ports System SetuP 8 16 Channel Mode Channels 8 16 Channel Config Figure 2 10 2 3 1 COMMON ALARM RELAYS 1 amp 2 READ THIS SECTION CAREFULLY AND TEST ALL SETTINGS BY SIMULATING MODEL 7800 INPUT CONDITIONS THAT SHOULD ACTIVATE THESE ALARM RELAYS Common Relay 1 amp Common Relay 2 menus are identical and therefore discussed only once It is very important to fully understand these menus since they determine the functions of each common relay Scott Safety 15 087 0021 Rev F gt Model 7800 Users Manual Revision E Sustem Setur Votes entry determines the Relay 142 number channels needed to set Relay 1 or Relay 2 Common Relay 1 Grour 1 16 Common Relay 2 Failsafe Disc Relays Al Votes Acknowledge is disabled when Horn Fiezo Az Votes Comm Ports no A2 Votes are entered 8 16 Ch Mode Entry menu R1 R2 Relay menus are identical Figure 2 11 e The Group menu entry offers additional flexibility by controlling which channels trip this menu s common alarm relay The 3 choices are 1 16 1 8 or 9 16 Some applications have different types of sensors or sensors in di
8. PRESS NEXT KEY TO EXIT Pulses the controller s local piezo beeper Fonnect Compl and Comn2 together or 3300 23300 Communications FAILED PASSED PRESS ANY KEY TO EXIT UP pa ki t hang h L RELE EBM te change output value ERROR OUTPUT BOARD HOT FOUND Channel i 4mA Displays A D counts re ceived from connected Sensor or Analog inputs Initiates flashing pattern on all front panel LED s with out affecting alarm relays Use UP DOWN keys to change Port Press ED to test Fort PASSED PRESS NEXT KEY TO EXIT ANALOG ANALOG ANALOG ANALOG INPUT THPT OUTRUT OTE UT FOUND FOUND FOUND FOUND ALARM2 Relay FOUND ALARM2 WEE FOUND Figure 4 2 32 Allows manual actuation of Common Alm1 Alm2 FAIL and HORN relays Front panel LED ON confirms relay actuation Allows manual actuation of any connected discrete relays without stimulating the inputs Front panel LED ON confirms relay actuation Provides simple means of testing the controller s serial ports Allows forcing 4mA 12 mA or 20mA to any connected analog output channels Tests printer ports by sending a brief test message to the printer Indicates all connected I O options If not indicated the option is not connected or a problem exists 087 0021 Rev F Model 7800 Users Manual Revision E SECTION 5 5 0 MODBUS RS 485 PORTS The MODE
9. System Setur System Setur Version H Discrete Relays Common Relay 1 9 Ai Failsafe Common Relay 2 AZ Failsafe 9 Disc Relays AS Failsafe YES Horn Fiezo Comm Ports 8 16 Ch Mode Entry menu Discrete Relay Configure Figure 2 12 2 3 3 COMMON HORN RELAY amp LOCAL PIEZO The MODEL 7800 is equipped with a low decibel audible piezo which chirps when keys are pressed and may be configured to audibly indicate alarm conditions The common horn relay is similar to the common Al amp A2 common relays System Setur System Setur Version ft Horn Relas Common Relay 1 Piezo Alarm OFF Common Relay 2 Alarm 1 BEEF Disc Relays Alarm 2 OK gt Horn Piezo Failsafe OFF Conm Ports 2 16 Ch Mode Horn Grour 1 16 Acknowledge YES DisPlas Alm HO Entry menu Piezo Horn Relay Figure 2 13 e Turning Piezo Alarm ON causes the audible piezo to duplicate the action of the horn relay This feature may be used to provide a low decibel indication of the status of the system s horn e Alarm 1 amp Alarm 2 menus control how this alarm level from each channel will affect the common horn relay Choices are OFF ON or BEEP one Hz Pulsating As an example A2 conditions might pulse the horn BEEP and A1 conditions to cause a steady horn ON Any other combination of these 3 choices is possible for A1 and A2 levels affecting the horn relay This feature is very useful since it allows the horn relay to serve as another level Al level A2 or both
10. 093 0297 channel is equipped with a bridge amplifier and 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 MODEL 7800 into a FAULT condition upon sensor failure or removal This option may also be configured to accept 4 20mA inputs for mixing bridge sensors and current loops into the same board Placing any channel s 2 position LEL 4 20mA jumper into 4 20mA position and installing the associated precision 100 ohm socketed resistor allows 4 20mA signals to be applied to it s C amp A terminals The 093 0297 sensor modules are not required for channels accepting 4 20mA Channels receiving input data from this board should have the Data From menu set for Sensor as described in section 2 2 4 This activates Cal Mode menus described in section 2 2 7 needed to zero and span sensor readings After performing the one time only Initial Setup as described below all subsequent calibrations are by the MODEL 7800 s electronic Cal Mode menus Catalytic sensors connected directly to the MODEL 7800 should be limited to ranges of 0 1000ppm 3 1 4 CATALYTIC BEAD SENSOR INITIAL SETUP Catalytic bead 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 1 Prior to connect
11. 1 INPUT OUTPUT OPTIONAL PCB s Telephone style RJ11 connections are used to add optional 8 channel analog and digital I O A screen appears briefly after power up indicating what options are connected and for which channels This information is also available from the Diagnostics Mode described in Section 4 Scott Safety 21 087 0021 Rev F Model 7800 Users Manual Revision E PRESS NEXT KEY TO EXIT Figure 3 2 3 1 1 OPTIONAL ANALOG INPUT PCB 093 0268 Many transmitters or sensors have analog output signals and the 12 bit Analog Input PCB shown in Figure 3 3 is available to accept these TB1 with 24 positions offers 3 terminals per channel for distributing power and receiving analog inputs These are EXC and HI LO inputs TB2 with only two positions is for connecting the power supply for powering external transmitters Precision 100 ohm resistors R1 R8 between each channel s IN LO and IN HI terminals are socketed termination resistors for 4 20mA inputs These may be removed if voltage inputs are to be applied EXC and IN LO terminals are bussed together internally EXC terminals are tied directly to TB2 1 and IN LO terminals are tied to TB2 2 Bussing allows transmitter power to be brought into the system at a single point TB2 and distributed back out at each channel s EXC IN LO terminals to simplify field wiring Figure 3 3 includes typical wiring to 2 amp 3 wire 4 20mA transmitters JP1 determines if th
12. 2 3 SYSTEM CONFIGURATION MENUS vvnnnnnnnvvvnnnnnnnvnnnnnnnnvnnnnnnnvnnnnnnnnnnnnnnnnnnennnr 15 2 3 1 COMMON ALARM RELAYS 1 amp 2 unnornvnrnvnnnnrnvnrnrsrersrarsssveavevsreversnvrrrvrrevsrrnvernvensveenne 15 2 3 2 093 0269 DISCRETE RELAY FAILSAFE MODE erurenurrnvrrvvrrarvrnverrvrrrrnrrrvsrrvvervrreen 16 2 3 3 COMMON HORN RELAY amp LOCAL PIEZO ou ieee eee eree eee eeeeeneseeesnaeeeeeeaeens 17 238 4 COMM PORT MENUS cion aksede son doi al bonda dodo a a e E AE Eas 18 2 3 5 EIGHT SIXTEEN CHANNEL MODES rvvvvevvrrvvvrvvvrvsvevvrersrersrervrsrersersersssressersrrrsreen 18 2 3 6 SENSOR INFORMATION mervvervvrvvrrvrvrvrvrvrverrnvernvernvervseevsrernrersranvrarernarsrnrsrasersernnssvneenn 19 2 4 AUTHORIZATION MODE ee kaken 19 2 5 LCD CONTRAST ADJUSTMENT c lt 0 cio terri tancias 20 SECTION EN E KM 20 3 0 MAIN I O INTERFACE PCB 093 0243 093 0568 nnrnnnnnnnvvnnnnnnnnvnnnnnnnnvnnnnnnn 20 3 1 INPUT OUTPUT OPTIONAL PCB S rnnnnnnvnnnnnnnvnnnnnnnvvnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 21 3 1 1 OPTIONAL ANALOG INPUT PCB 093 0268 oooococococcccococonocononocnnncnnnncnnnnanan coneccion 22 3 1 2 OPTIONAL DISCRETE RELAY PCB 093 0269 oocincococicociconnnoccnncnoncnanananancana conan 23 3 13 OPTIONAL BRIDGE SENSOR INPUT BOARD 093 0217 093 0297 wo 25 3 1 4 CATALYTIC BEAD SENSOR INITIAL SETUP ooo eee ee eee eee eeeeteeeeeeeaeeeeeeeas 25 3 1 6 OPTIONAL 4 20mA ANALOG OUTPUT BOARD 093 0270 27 3 1 7 OPTIONAL CLOCK P
13. 316 stainless steel NEMA 4X wall mount enclosure Seven 8 channel I O option PCB s such as analog input or discrete relays may be mounted inside this enclosure It is suitable for mounting outdoors but an above mounted weather deflector shield is recommended Weight is approximately 30 pounds Conduit entries are not provided so installers may place entries as needed Bottom or lower side areas are recommended Care must be taken to avoid drilling into circuit boards mounted inside the enclosure Properly ground the enclosure and follow national and local electrical codes 15 75 9 75 8 00 j ZAN J Mt Lou 31 00 11 DOOR OPEN CLEARANCE i SHOCK HAZARD ADD LOCKING DEVICE TO CLASP ON MIDDLE RIGHT SIDE TO PREVENT CONTACT WITH DANGEROUS VOLTAGES REMOVE AC POWER BEFORE SERVICING EQUIPMENT 316 STAINLESS STEEL NEMA 4X WALL MOUNT Al Figure 6 4 6 4 093 0281 NEMA 7 EXPLOSION PROOF WALL MOUNT ENCLOSURE The MODEL 7800XP shown in Figure 6 5 is an aluminum NEMA 4X 7 wall mount enclosure designed for mounting into DIV 1 amp 2 Groups B C D potentially hazardous areas Eleven 8 channel I O option PCB s such as analog inputs or discrete relays may
14. 40401 40408 3 n a 2 characters per register Channel Tag 2 40409 40416 3 n a 2 characters per register Channel Tag 3 40417 40424 3 n a 2 characters per register Channel Tag 4 40425 40432 3 n a 2 characters per register Channel Tag 5 40433 40440 3 n a 2 characters per register Channel Tag 6 40441 40448 3 n a 2 characters per register Channel Tag 7 40449 40456 3 n a 2 characters per register Channel Tag 8 40457 40464 3 n a 2 characters per register Channel Tag 9 40465 40472 3 n a 2 characters per register Channel Tag 10 40473 40480 3 n a 2 characters per register Channel Tag 11 40481 40488 3 n a 2 characters per register Channel Tag 12 40489 40496 3 n a 2 characters per register Channel Tag 13 40497 40504 3 n a 2 characters per register Channel Tag 14 40505 40512 3 n a 2 characters per register Channel Tag 15 40513 40520 3 n a 2 characters per register Channel Tag 16 40521 40528 3 n a 2 characters per register Six character Eunits Tag Type Channel First Last Read FC Write FC Notes EUNITS 1 40529 40531 3 n a 2 characters per register 3 registers per channel EUNITS 2 40532 40534 3 n a 2 characters per register 3 registers per channel EUNITS 3 40535 40537 3 n a 2 characters per register 3 registers per channel EUNITS 4 40538 40540 3 n a 2 characters per register 3 registers per channel EUNITS 5 40541 40543 3 n a 2 characters per register 3 registers per channel EUNITS 6 40544 40546 3 n a 2 characters per register 3 registers per channel EUNITS 7 4054
15. ALL MODBUS 2001 COILS ARE WRITTEN BY THIS FEATURE DO NOT CONNECT DEVICES WITH 2001 COILS CONTROLLING OTHER CRITICAL EVENTS 2 3 5 EIGHT SIXTEEN CHANNEL MODES The system menu allows setting the MODEL 7800 controller to accept either 8 or 16 channels If 8 channels are selected by this menu they are channels 1 8 and 9 16 are disabled One way MODEL 7800 cost is kept low is Input Output option PCB s are arranged into groups of 8 channels Therefore users with less than 9 channels require Scott Safety 18 087 0021 Rev F Model 7800 Users Manual Revision E only 1 PCB and do not pay for I O hardware for 16 channels If more than 8 channels are needed a second I O option PCB may be required System Setur System Setur Version 48 8716 Channel Mode Common Relay 1 Channels 16 Common Relay 2 Disc Relays Horn Piezo Modbus 3 16 Ch Mode Entry menu 8 16 Channel Config Figure 2 15 2 3 6 SENSOR INFORMATION Sensor Info is available when at least one channel has Sensor Life activated in the Marker menu see section 2 2 4b The Sensor Info screen displays each channel s sensor status as illustrated in Figure 2 16 Channels with Sensor Life disabled indicate Option Disabled above the corresponding empty bar graph If Sensor Life is enabled the channel will have its Measurement Name above the bar or an empty bar with a Cal Required label Cal Required indicates no Calibration Marker value has been received by the MODE
16. D Counts menus described in section 2 2 4a to define 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 The six ASCII engineering units previously entered are automatically displayed at the top of each menu as areminder Four digits must appear in this entry so trailing 0 s may appear here that are not displayed on other data screens 2 2 6 DECIMAL POINT RESOLUTION Resolution of displayed channel values is configured in this menu by setting the number digits trailing the decimal point Values are limited to a maximum of four digits and a polarity sign An auto ranging feature displays the highest resolution allowed by this menu s decimal point entry For example if three decimal points are entered and the range is 0 to 100ppm the reading will be 0 000 at Oppm and 100 0 at 100ppm However 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 In the above example this would cause Oppm to display 0 and 100ppm to display 100 2 2 6d TURNING OFF UNUSED CHANNELS The Channel On entry determines if this channel is to be utilized Turning it off will ca
17. FC Notes Zero Real 1 16 41001 16 n a 3 n a zero real w o decimal point Zero DP 1 16 41017 32 n a 3 n a zero real divisor Span Real 1 16 41033 48 n a 3 n a span real w o decimal point Span DP 1 16 41049 64 n a 3 n a span real divisor Alarm 1 Real 1 16 41065 80 n a 3 n a alarm 1 real w o decimal point Alarm 1 DP 1 16 41081 96 n a 3 n a alarm 1 real divisor Alarm 2 Real 1 16 41097 112 n a 3 n a alarm 2 real w o decimal point Alarm 2 DP 1 16 41113 28 n a 3 n a alarm 2 real divisor Alarm 3 Real 1 16 41129 44 n a 3 n a alarm 3 real w o decimal point Alarm 3 DP 1 16 41145 60 n a 3 n a alarm 3 real divisor Fault Real 1 16 41161 76 n a 3 n a alarm 3 real w o decimal point Fault DP 1 16 41177 92 n a 3 n a alarm 3 real divisor 24 Hour Trend Database The 24 hour MAX MIN and AVERAGE trend data may be retrieved over the Modbus serial interface Each channel consists of 240 MAX MIN and AVERAGE values or one value for every 1 10 hour 6 minutes Since there are 16 channels this database equals 3 840 registers in addresses 33017 36857 Due to the large size MAX MIN or AVERAGE values may only be retrieved one at a time To improve bandwidth the master may retrieve the database in blocks of 120 registers at a time one half of a channel s data The C1 only updates these 3 840 registers upon receiving an update command from the Modbus master Type Channel First Last Read FC Write FC Notes Update MIN n a 2065 n a n a 5 Moves 24 hour MIN data trend to trend da
18. HASSV 8211 0100 GYVOH IOVIYILNI YILNIYd OZI PC INTERFACE 2 RS232 SERIAL CABLE DIAGRAM 50 MAX 6 7 10 0229 END DB9 F PC END DB9 F 2 RXD A gt 3 TXD requies RS 232 3 TXD i 2 RXD Converter at printer end 5 SG 586 L rfe PRINTER INTERFACE OPTION 10 0229 Figure 3 8 3 1 7a CLOCK PRINTER SYSTEM SET UP MENU Detection of the 093 0338 on the I2C bus causes the Clock Printer System Setup menu item to appear Selecting it and pressing EDIT brings up the menu shown at right in Figure 3 9 Date Time menu entries allow setting of correct local time and date The ALARM PRINT ON OFF entry allows printing to be discontinued if turned to OFF PORT allows selection of RS 232 RS 422 or the parallel port With only one port able to be activated at a time BUFFER DUMP allows immediate printing of all the 30 35 stored events PRINT CONFIG allows immediate printing of all channel variables such as channel ID s Engrg Units etc PRINTER READY ERROR indicates the functional status of the printer Scott Safety 29 087 0021 Rev F Model 7800 Users Manual Revision E System Setur Version 4H Clock Printer Alarm 1 Relay Date 66 85 03 Alarm 2 Relay Time 16 42 31 Horn Fiezo Alarm Print ON Modbus Port RS232 8 16 Ch Mode Buffer Dune Clock Printer Print Confis Printer Ready Entry menu Clock Printer Controls Figure 3 9 3 1 8 OPTIONAL 24VDC 150 WATT POWER SUPPLY 028 0034 The MODEL 7800 Con
19. Model 7800 Users Manual Revision E Firmware Rev level T gt Common Relays Discrete Relays Piezo Serial Ports Analog Dutruts Analog Inputs Alarm LEDs Printer Port Connected 1 0 Common Relays m Discrete Relays Piezo Serial Ports Analog Outruts Analog Inputs Alarm LEDs Printer Port Connected 1 0 Common Relays Discrete Relays Piezo Serial Ports Analog Dutruts Analog Inputs Alarm LEDs Printer Port Connected 1 0 Common Relays Discrete Relays Piezo m Serial Ports Analog Dutruts Analog Inputs Alarm LEDs Printer Port Connected I 0 Common Relays Discrete Relays Piezo Serial Ports Analog Outruts Analog Inputs Alarm LEDs Printer Port Connected 1 0 Common Relays Discrete Relays Piezo Serial Ports Analog Dutruts Analog Inputs Alarm LEDs Printer Port Connected 1 0 Common Relays Discrete Relays Piezo Serial Ports Analog Outruts Analog Inputs gt Alarm LEDs Printer Port Connected I 0 Common Relays Discrete Relays Piezo Serial Ports Analog Dutruts Analog Inputs Alarm LEDs gt Printer Port Connected 1 0 Common Relays Discrete Relays Piezo Serial Ports Analog Outruts Analog Inputs Alarm LEDs Printer Port m Connected 1 0 Scott Safety Use UP DOWN keys to change common relay states Alarm 1 relay ON PRESS NEXT KEY TO EXIT Ure DE DOUN kes to grane elas Tiskt or the pelas energized Channel Bl Discrete Relays
20. Scott Safety 41 087 0021 Rev F Model 7800 Users Manual Revision E be mounted inside this enclosure Itis suitable for mounting outdoors but an above mounted weather deflector shield is recommended Weight is approximately 110 pounds Properly ground the enclosure and follow national and local electrical codes 17 3 4 YEN AN 71 A 22 3 8 FRONT VIEW BOTTOM VIEW v amp 3 4 CONDUIT ENTRY di N TYP 4 PLACES bo 9146 FN mm A A N fi gt op DK w IN PA N 6 e DNS de Muller MOUNTING FOOT 7 A 2 CONDUIT ENTRY MOUNTING HOLE DIMENSION HORIZ POSITION HORIZONTAL POSITION 15 W 12 7 8 H VERTICAL POSTIION 7 W 21 H ST 71XP NEMA 7 EXPLOSION PROOF Figure 6 5 6 5 MODEL 7800 MAIN I O amp OPTION PCB FOOTPRINT DIMENSIONS MODEL 7800 controllers have virtually unlimited possibilities for configuration of options such as analog I O discrete relays printer interface and others All MODEL 7800 enclosure styles require the Main I O PCB Figure 3 1 but also support the mounting of additional option PCB s as described below e MODEL 7800PM Panel Rack Mount supports 2 option positions as standard and 4 more with the 093 0306 expansion plate since in panel rack mount installations 093 0306 s must be mounted in user space behind panels or inside racks multiple 093 0306 s may be incorporated to support th
21. n a 4 n a Signed 16bit integer Sensor Life 10 31074 n a 4 n a Signed 16bit integer Sensor Life 11 31075 n a 4 n a Signed 16bit integer Sensor Life 12 31076 n a 4 n a Signed 16bit integer Sensor Life 13 31077 n a 4 n a Signed 16bit integer Sensor Life 14 31078 n a 4 n a Signed 16bit integer Sensor Life 15 31079 n a 4 n a Signed 16bit integer Sensor Life 16 31080 n a 4 n a Signed 16bit integer Note 2 Disabled 1 CAL Required 0 100 Sensor Life Coils Notes Set this coil to issue an alarm Acknowledge via modbus see Echo Ack in section 2 3 4 Type Channel First Last Read FC Write FC Notes Alarm Reset n a 2001 n a n a 5 write Oxff to high byte to set Scott Safety 36 087 0021 Rev F Model 7800 Users Manual Revision E Memory Discretes Notes May be read as single discrete or packed with multiple register read Type Channel First Last Read FC Write FC Notes Chnl Alarm 1 1 16 12001 16 n a 2 n a discrete may be packed Type Channel First Last Read FC Write FC Notes Chnl Alarm 2 1 16 12017 32 n a 2 n a discrete may be packed Type Channel First Last Read FC Write FC Notes Chnl Alarm 3 1 16 12033 48 n a 2 n a discrete may be packed Memory Reals Notes Real value represents float value without the decimal point such as 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 value 10 Type Channel First Last ReadFC Write
22. transmitting a special lt 4mA or negative Marker value The MODEL 7800 offers channel Marker menus for detecting and indicating such events see Figure 2 5 While active the MODEL 7800diplays a 6 digit ASCII message to indicate the special event and if equipped with 093 0270 4 20mA output option the MODEL 7800 also transmits the same lt 4mA value e Marker Enabled turns the marker feature ON and OFF e The negative Marker value is entered into the Marker field as a negative percent of full scale For example 15 62 of full scale detects a marker value of 1 5mA 1 5mA is 15 62 of full scale when 4 20mA is the range e The Mark As menu allows user entry of the 6 digit ASCII message to be displayed when the marker is detected Channel XX Channel KX Channel XX Measurement Name INPUT DATA FROM INPUT MARKER Alarm 1 Analog Input Marker Enable Y Alarm 2 Min Raw 06566 Marker 15 62 Alarm 3 Max Raw 64668 Mark As IN CAL Data From Marker Menu Sensor life Y Linearize Reset Sen Life Configure es Entry Menu Input From menu Marker menu Figure 2 5 2 2 4 SENSOR LIFE DETECTION Sensor Life should only be activated when the Marker event is Calibration and when a sensor life value is transmitted after each calibration This feature is provided primarily for use when interfacing the MODEL 7800 to R C Systems ST 48 Sensor Transmitters which may be configured to transmit sensor life values after each calibratio
23. 0306 NEMA 4X Expansion Plate 8 Options 10 0178 093 0277 NEMA 7X Expansion Plate 3 Options 10 0181 See Note Note Please contact Technical Support at 800 247 7257 Model 7800 Users Manual Revision E WARRANTY Scott Safety a Division of Scott Technologies Inc warrants to Buyer that at the time of delivery this product will be free from defects in material and manufacture and will conform substantially to Scott Safety s applicable specifications Scott Safety s liability and Buyer s remedy under this warranty are limited to the repair or replacement at Scott Safety s option of this Product or parts thereof returned to Seller at the factory of manufacture and shown to Scott Safety s reasonable satisfaction to have been defective provided that written notice of the defect shall have been given by Buyer to Scott Safety within one 1 year after the date of this product by Scott Safety Scott Safety warrants to Buyer that it will convey good title to the Product Scott Safety 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 Scott Safety 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 THE FOREGOING WARRANTIES ARE EXCLUSIVE AND ARE GIVEN AND ACCEPTED IN LIEU OF i
24. 1 SETUP MENU CONFIGURATION rrnnnnvvvnnnnnnnvvnnnnnnnvnnnnnnnvnnnnnnnvnnnnnnnnnnnnnnnnnnnnnnnnn 6 2 1 1 CHANGING MENU VARIABLES USING THE KEYPAD iarernvernrvvvnvnvvvervrervrrrvrrrrvrerernenn 6 2 2 CHANNEL CONFIGURATION MENUS rnnnnnvvvnnnnnnvvnnnnnnnnvnnnnnnnvnnnnnnnnvnnnnnnnnnennnnnn 7 2 2 1 CHANNEL SETUP ENTRY MENU uo eee reto cere cere onn onsnasenossosssassonosanosonosonnoe 8 2 2 2 ALARM 1 ALARM 2 HORN RELAY SET UP MENU siseses 8 2 2 3 ALARM 3 FAULT ALARM MENU 00 cece ese tete etree eae ron ro rro 9 2 24 DATA FROM MENU TO SET INPUT SOURCE 00 eee cen eene cere eeeeetereteeeeeeeeaes 9 2 2 44 MIN MAX RAW COUNTS MENUS urvvrevvrenvvrnvvrnvvrvnvevvrervrervrervrarerrervrersraresersrrveeenn 10 2 2 4b MARKER MENUS coimas ata kes ka nos EEA ET EAE aadar oTit 11 2 2 4c SENSOR LIFE DETEGTION cotidiana kob kodak ason kan 11 2 2 5 LINEARIZATION MENU ee cece eee ante ataaastaa saaa saaa a AA Aa 12 2 2 6 CONFIGURE MENU aksene agents etsende oia 12 2 2 6a EUNITS MEASUREMENT NAME ASCII DATA FIELDS eccerre 13 2 2 6b INPUT MEASUREMENT RANGE eranvrvnvvrnvvevnvrvsvevsvervrersrrersrersrersrarerrerrrrrsreveerrressneenn 13 2 2 6 DECIMAL POINT RESOLUTION cooococccccccccnnncnnncnnnnnonancnnn nono ncnn conan ono nn rana ran anno narnia 13 2 2 6d TURNING OFF UNUSED CHANNELS ococccinccnncconcconnnconononnncnn nono n crono nono no nnnno nan nannnnns 13 2 2 66 COPY DATA TO caia dia 13 22 00 gt GAL MODE ui tet dani ias 14
25. 240VAC 1 6A max A slide switch on the front of the power supply selects AC input range The 093 0034 150 watt power supply Figure 3 8 is for powering the MODEL 7800 and up to 16 detectors A minimum of 5 watts per channel is available for powering of external transmitters 1 2 2 RELAYS Common relays are standard and menus provide voting logic for ALARM 1 ALARM 2 FAULT and HORN Discrete relays are optional All relays are rated A 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 Relay wiring should be kept separate from low level signal wiring 1 2 3 AMBIENT TEMPERATURE RANGE 25 to 50 degrees C 1 2 4 HUMIDITY RANGE 0 TO 90 R H Non Condensing 1 2 5 ALTITUDE Recommended up to 2000 meters 1 2 6 HOUSINGS e General purpose panel mount weighing 7 lbs and including hardware for 19 rack mounting Figure 6 1 e NEMA 4X wall mount in fiberglass enclosure weighing 17 lbs Figure 6 2 Scott Safety 4 087 0021 Rev F Model 7800 Users Manual Revision E e NEMA 7 wall mount suitable for DIV 1 amp 2 Groups B C D weighing 110 Ibs Figure 6 4 Includes non intrusive magnetic keypad 1 2 6a NON INTRUSIVE MAGNETIC KEYPAD The MODEL 7800 operator interface includes five front panel touch keys A magnetic keypad option offers these five keys with adjacent magnetic keys This option
26. 31001 31016 4 n a 12bit integer Reading Channel Status words contain configuration and status bits for a channel They are as follows Type Channel First Last Read FC Write FC Notes Channel Status 1 16 31017 31032 4 n a 16bit integer see bit by bit definition below Alarm 1 Trip bitO 1 Low 0 High Alarm 1 Horn Drive bit 1 1 On 0 Off Alarm 3 Type bit2 1 Level 0 Fault Alarm 2 Horn Drive bit3 1 On 0 Off Linearize bit4 1 On 0 Off Alarm 3 Trip bit5 1 Low 0 High Input Marker bit6 1 Input Marker Detected 0 Normal Mode Channel Disable bit7 1 Disabled 0 Enabled Controller Channel In Cal bit8 1 Local Cal Mode 0 Normal Mode Modbus Data Type bit9 1 4 byte float 0 2 byte integer reserved bit10 reserved reserved reserved bitl1 reserved reserved Alarm 1 Latch bit12 1 Latching 0 Non latching Alarm 2 Latch bit13 1 Latching 0 Non latching Alarm 3 Latch bit14 1 Latching 0 Non latching Alarm 2 Trip bit15 1 Low 0 High Scott Safety 35 087 0021 Rev F Model 7800 Users Manual Revision E Alarm status words are bits packed into 16 bit integer where Isb channel 1 alarm status and msb channel 16 alarm status Alarm status bit 1 indicates alarm is active Read FC Write FC Notes Type Channel First Last Alarm 1 Status 1 16 31033 n a Alarm 2 Status 1 16 31034 n a Alarm 3 Status 1 16 31035 n a Relay Status n a 31036 n a 4 4 4 4 n a n a n a n a packed 16bit integer packed 16bit integer pa
27. 7 40549 3 n a 2 characters per register 3 registers per channel EUNITS 8 40550 40552 3 n a 2 characters per register 3 registers per channel EUNITS 9 40553 40555 3 n a 2 characters per register 3 registers per channel EUNITS 10 40556 40558 3 n a 2 characters per register 3 registers per channel EUNITS 11 40559 40561 3 n a 2 characters per register 3 registers per channel EUNITS 12 40562 40564 3 n a 2 characters per register 3 registers per channel EUNITS 13 40565 40567 3 n a 2 characters per register 3 registers per channel EUNITS 14 40568 40570 3 n a 2 characters per register 3 registers per channel EUNITS 15 40571 40573 3 n a 2 characters per register 3 registers per channel EUNITS 16 40574 40576 3 n a 2 characters per register 3 registers per channel Scott Safety 34 087 0021 Rev F Model 7800 Users Manual Revision E Six character Value ASCII string Type Channel First Last Read FC Write FC Notes ASCII Value 1 40577 40579 3 n a 2 characters per register 3 registers per channel ASCII Value 2 40580 40582 3 n a 2 characters per register 3 registers per channel ASCII Value 3 40583 40585 3 n a 2 characters per register 3 registers per channel ASCII Value 4 40586 40588 3 n a 2 characters per register 3 registers per channel ASCII Value 5 40589 40591 3 n a 2 characters per register 3 registers per channel ASCII Value 6 40592 40594 3 n a 2 characters per register 3 registers per channel ASCII Value 7 40595 40597 3 n a 2 characters per reg
28. AUTHORIZE menu offers a password feature to prevent tampering with MODEL 7800 parameters Scott Safety 5 087 0021 Rev F Model 7800 Users Manual Revision E Chal PCTLEL HAS Mea 5 PCTLEL chez 10 PCTLEL STEEN E an n a hop Chas PCTLEL Ch 4 56 PCTLEL Chas PCTLEL Chee PCTLEL Cha PCTLEL 1 23 3 4 5 6 7 she PCTLEL Bar Graphs ChB2 Measurement Hame SETUP MENU 1 Y System Channel l Channel 89 end Channel 62 Channel 18 Authorize Channel amp 3 Channel 11 81117 COUNTS PETLEL e Diagnostics Channel 4 Channel 12 UNLOCKED Channel 85 Channel 13 Channel 66 Channel 14 Channel 67 6 Eharmel15 Channel 88 Eharmel16 B3 36 MINUTES Combination Setup Figure 2 0 2 1 SETUP MENU CONFIGURATION Variables inside system and channel menu trees allow optimum MODEL 7800 configuration for a wide range of demanding multi point monitoring applications Access to menus is via the Setup mode by pressing EDIT and activating the Setup screen shown in Figure 2 0 Menu trees are provided for each of the 16 channels and another for system variables Select the desired menu by scrolling with UP DOWN and EDIT to enter the menus 2 1 1 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 Measuremen
29. L 7800 SENSOR LIFE al Measurement Name ao Drtion Disabled A 1 ETA az Cal Resuired iG Ortion Disabled Version az Cal Reauired 11 Detion Disabled a p4 Cal Reauired 12 Detion Disabled Here as Cal Required 13 Ortion Disabled Modb AA A 8 16 Ch Hode AG Cal Fesuired 14 OFtion Disabled Sensor Info FE MS 3 Entry menu pr l Requires jin DE as Cal Feauired 16 Drtion Disabled oo amm Figure 2 16 2 4 AUTHORIZATION MODE A password entered in the AUTHORIZATION menu allows locking 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 10 digit field To lock or unlock the system the correct 4 digit authorization number must be entered into the Enter Code field Point to the Unlock System menu entry and press EDIT to complete the unlock procedure It is very important to record the 4 digit code However if lost it may be displayed briefly at power up using the following procedure Scott Safety 19 087 0021 Rev F Model 7800 Users Manual Revision E Remove power from the controller Reapply power and as the alarm LED s begin scrolling down hold the following keys simultaneously UP DOWN NEXT amp EDIT Watch closely The 4 digit authorization code appears briefly at bottom left of the screen IMPO
30. L 7800 is equipped with Master COMM 1 and Slave COMM 2 modbus RTU ports Port configurations are described in sections 2 2 and 2 3 of this manual Section 5 1 defines register locations of data available via the MODEL 7800 slave port Figure 5 1 shows how to wire multiple MODEL 7800 s into a Master Slave configuration It is very important to understand that RS 485 is not a current loop The drivers and receivers must share a common ground This is why two wire network is a misnomer when applied to RS 485 and a third OV or common wire must also be run between devices that do not already share the same DC power supply Main I O PCB 10 0142 Shown wired for Master Slave configuration E F MAIN I O BOARD Q A MAIN I O BOARD Q TB3 TB3 ALARM ALARM SPARE RESET SEARE RESET O Tal J zal J COMM1 COMM2 2 COMM1 comma y2 S 22220 TX1 RX1 TX2 RX2 SS 222202 TX1 RX1TX2 RX2 LO J3 ki pa J3 m AUX RELAY N Z a AUXRELAY E BOARD JP2 BOARD JP2 OPTIONAL U lp OPTIONAL U U L u2 us Ju U4 TB2 1 COMM1 RXA
31. LASP ON BOTTOM RIGHT SIDE TO PREVENT CONTACT WITH DANGEROUS VOLTAGES REMOVE AC POWER BEFORE SERVICING EQUIPMENT NEMA 4X WALL MOUNT Figure 6 2 Scott Safety 39 087 0021 Rev F Model 7800 Users Manual Revision E Scott Safety GROUNDING OF EQUIPMENT AND CONDUIT Ground in accordance with the requirements of the National Electrical Code Conduit hubs for metallic conduit must have a grounding bush pe ing attached to the hub on the inside of the enclosure Ground Non metallic condut and hubs require the use of grounding P A wire in the conduit Grounding bushings are not required To avoid electric shock System grounding is provided by connection wires from all con grounding must be duit entries to the subpanel or to other suitable point which pro installed by the customer vides continuity Any device having a metal portion or portions as part of the installation extending out of the enclosure must also be properly grounded Non metallic enclosures do not provide grounding between conduit connections TYPICAL GROUNDING ILLUSTRATIONS METALLIC CONDUIT NON METALLIC CONDUIT CONNECTOR LOCKNUT GHOUNDING BUSHING GROUNDING WIRE GROUNDING CONNECTION Figure 6 3 40 ing bushings have provisions for connection of a grounding wire 087 0021 Rev F Model 7800 Users Manual Revision E 6 3 073 0316 NEMA 4X WALL MT 316 STAINLESS STEEL ENCLOSURE The MODEL 780088 shown in Figure 6 4 is a
32. Model 7800 Users Manual Revision E S A F ET Y INSTRUCTION MANUAL MODEL 7800 16 CHANNEL CONTROLLER 087 0021 Revision E Firmware 6 09 8 later A Warning Read amp understand contents of this manual prior to operation Failure to do so could result in serious injury or death P O Box 569 Monroe NC 28111 Phone 800 247 7257 FAX 704 291 8330 Web www scottsafety com REVISION HISTORY Revision E 1 28 2011 Update Section 3 5 added warranty added part number mapping and add Revision History page Added Scott Safety logos and contact information PART NUMBER MAPPING Description P N Ordering P N 8 Channel 4 20mA Analog Output PCB 10 0167 093 0270 24VDC 150Watt Power Supply 10 0172 028 0034 Main I O Controller PCB 10 0142 093 0243 Main I O Controller PCB 10 0213 093 0568 Auxiliary Relay PCB 10 0144 093 0222 8 Channel Analog Input PCB 10 0158 093 0268 Optional Discrete Relay PCB 10 0195 093 0269 8 Channel Cat Bead Input PCB Optional Bridge 10 0191 093 0217 Sensor Input Board Dual Channel Cat Bead Input PCB 10 0192 093 0297 Optional Clock Printer Interface PCB 10 0229 093 0338 Panel Rack Mount Enclosure ST71PM 093 0280 10 0210 16 Wall Mount Enclosure Fiberglass ST 71N4 093 0279 16 Wall Mount Enclosure Stainless Steel ST 71SS 073 0316 16 Wall Mount Enclosure Explosion Proof ST 71XP 093 0281 NEMA 4X Expansion Plate 4 Options 10 0180 093
33. RINTER INTERFACE BOARD 093 0338 aneneen 28 Model 7800 Users Manual Revision E 3 1 7a CLOCK PRINTER SYSTEM SET UP MENU menvrvrvnvevvrervrarvrrverrvrrrrrrrvrrsvrrrrerrneeenen 29 3 1 8 OPTIONAL 24VDC 150 WATT POWER SUPPLY 028 0034 essensen 30 SECTION 4 iii kt ra na n a ep n neta e n n a a n A e a n kr ak e kk e a kn ek pk 30 4 0 SYSTEM DIAGNOSTICS vi bosi ede do kaz k kise ai ak dye kf pin pik lite enden he 30 SEGTION EE n n a n A n n kn n n n a n MN n n ka 33 5 0 MODBUS RS 485 PORTS ie east ka kras kode kds anka oka danna kana menas akasan kis anmas voi 33 5 1 MODBUS SLAVE REGISTER LOCATIONS enrnnanvvrnnnnvnnnvvnnnnnnvnnvevnnnnnevnnnnvene 34 SECTION Gito k dot ak ok kri iii 38 6 1 093 0280 PANEL RACK MOUNT ENCLOSURE runvernnnnvvnnvvvnnnnnvennnnvnnnnnvenuner 38 6 2 093 0279 NEMA 4X WALL MOUNT FIBERGLASS ENCLOSURE 00 39 6 3 073 0316 NEMA 4X WALL MT 316 STAINLESS STEEL ENCLOSURE 41 6 4 093 0281 NEMA 7 EXPLOSION PROOF WALL MOUNT ENCLOSURE 41 6 5 MODEL 7800 MAIN I O amp OPTION PCB FOOTPRINT DIMENSIONS 42 Model 7800 Users Manual Revision E SECTION 1 IMPORTANT SAFETY ISSUES The following symbols are used in this manual to alert the user of important instrument operating issues j This symbol is intended to alert the user to the presence of important AN operating and maintenance servicing instructions A This symbol is intended to alert the user to the presence of A dangerous v
34. RTANT DO NOT hold the keys before applying power since this causes a cold boot and returns all settings back to factory defaults Aut horization ENTER NAME Enter Code Figure 2 17 2 5 LCD CONTRAST ADJUSTMENT The Setup menu item identified as CONTRAST allows users to adjust the LCD contrast to a level suitable to the ambient lighting Selecting CONTRAST and pressing EDIT causes the UP DOWN keys to increase and decrease LCD contrast SECTION 3 3 0 MAIN I O INTERFACE PCB 093 0243 093 0568 093 0243 and 093 0568 Main I O Interface PCB s are equivalent except the 093 0568 has ribbon cable connector J1 mounted on the back of the PCB 093 0243 s are supplied on all wall mount models while the 093 0568 is supplied only on the MODEL 7800PM panel mount The most basic MODEL 7800 Controller requires only the I O PCB shown in Figure 3 1 for interfacing to field wiring The MODEL 7800 primary power supply is applied to terminals 9 amp 11 of TB2 This may be from 10 30 VDC WARNING HIGH A VOLTAGES SUCH AS 115 VAC APPLIED TO THESE TERMINALS MA Y ER CAUSE SEVERE DAMAGE DC output terminals 10 amp 12 on TB2 provide up to 500mA of output power for powering remote devices such as lamps transmitters etc This PCB includes both master COMM 1 and slave COMM 2 RS 485 Modbus ports 5 amp form C relays for each common alarm event Al A2 FAULT A3 amp HORN and power supply I O terminals JP1 allows the RS 485 ports to be confi
35. amp 3 wire 4 20mA transmitter wiring connect correct power 24VDC or Transmitter other to TB2 2 Wire 4 20mA Transmitter 8 Channel Analog Input Option 410 0158 Figure 3 3 3 1 2 OPTIONAL DISCRETE RELA Y PCB 093 0269 An optional Discrete Relay PCB shown in Figure 3 4 adds eight 5 amp resistive form C relays per sixteen channel alarm group 2 PCB s required when utilizing more than 8 channels Each PCB may be configured via rotary switch S1 to function for ALARM 1 ALARM 2 or ALARM 3 FAULT for channels 1 8 or 9 16 A 1 minute time delay after power is provided to inhibit relay actuation until the system has had time stabilize Alarm groups or zones may be created by connecting adjacent channels together using JP4 as shown This creates a wire OR function with selected channels causing any alarm included within the zone to actuate ALL zone relays Failsafe operation of 093 0269 discrete relays may be programmed in the system menu as described in section 2 3 2 Many MODEL 7800 applications utilize the common alarm relays see section 3 0 and Scott Safety 23 087 0021 Rev F gt Model 7800 Users Manual Revision E do not require discrete relays for each of the 48 alarm events 16 Al s 16 A2 s amp 16 A3 s If discrete relays are needed for all 48 alarms then six PCB s are required 5 VDC power to the discrete relay option PCB s is normally supplied from the MODEL 7800 Controller via the slender I C cable
36. ata is retained in non volatile memory during power interruptions The MODEL 7800 front panel is shown below in Figure 1 0 displaying the 8 channel bar graph screen Additional data screens are shown in Figure 2 0 PCTLEL PCTLEL PCTLEL PCTLEL PCTLEL PCTLEL PCTLEL PCTLEL Figure1 0 1 1 DATA DISPLAY SCREENS The MODEL 7800 Controller offers 3 distinct graphic displays for depicting the monitored data These are Bar Graphs 24 Hour Trend and Combination Each is shown in Figure 2 0 Scott Safety 2 087 0021 Rev F Model 7800 Users Manual Revision E 1 1 1 TREND SCREEN The MODEL 7800 Trend screen shown in Figure 2 0 displays a 24 hour trend of input data for the channel selected Horizontal tic marks are each hour and vertical tic marks are each 10 of full scale Dashed lines indicate alarm levels The graphic LCD is 240 pixels wide so each pixel represents 1 10 hour or 6 minutes worth of data The trend is 100 pixels high so each represents 1 of full scale in amplitude Since each data point must be collected for 6 minutes before it may be displayed it is likely input values will fluctuate during this interval Therefore MAX MIN and AVERAGE values are stored in RAM memory for each 6 minute subinterval To accurately portray the trend a vertical line is drawn between MIN amp MAX values for each 6 minute subinterval The AVERAGE value pixel is then left blank leaving a gap in the vertical li
37. cked 16bit integer packed 16bit integer Note Common Relay status bits register 31036 are as follows Relay 1 bit0 Relay 2 bitl Fault Relay bit2 Horn Relay bit3 Type Channel First Last Cal Status 1 16 31037 n a Trend Interval 1 16 31038 n a Timer Fault Status 1 16 31039 n a Read FC Write FC Notes 4 4 4 n a n a n a packed 16bit integer 16bit integer Time in Seconds packed 16bit integer Alarm LED flashing status bit I indicates LED is flashing Acknowledge clears all to 0 Read FC Write FC Notes Type Channel First Last Alarm 1 Status 1 16 31049 n a Alarm 2 Status 1 16 31050 n a Alarm 3 Status 1 16 31051 n a Common LED 1 16 31052 n a Status LCD Display Screen Displayed Integer Type Channel First Last LCD Screen n a 31053 n a Sensor Life 4 4 4 4 n a n a n a n a packed 16bit integer packed 16bit integer packed 16bit integer packed 16bit integer Read FC Write FC Notes 4 n a 8bit integer Type Channel First Last Read FC Write FC Notes Sensor Life 1 31065 n a 4 n a Signed 16bit integer Sensor Life 2 31066 n a 4 n a Signed 16bit integer Sensor Life 3 31067 n a 4 n a Signed 16bit integer Sensor Life 4 31068 n a 4 n a Signed 16bit integer Sensor Life 5 31069 n a 4 n a Signed 16bit integer Sensor Life 6 31070 n a 4 n a Signed 16bit integer Sensor Life 7 31071 n a 4 n a Signed 16bit integer Sensor Life 8 31072 n a 4 n a Signed 16bit integer Sensor Life 9 31073
38. e 8 analog inputs are applied to channels 1 8 or channels 9 16 Connecting more than 8 analog inputs requires 2 PCB s with one s JP1 set for channels 1 8 and the other set for channels 9 16 Scott Safety 22 087 0021 Rev F Model 7800 Users Manual Revision E 0010 1115 ASSY 10 0158 ST 71 ANALOG INPUT BOARD m 2 kan 5 p oen 255 KEE JP1 determines if this 8 channel da Mi H Analog Input PCB provides inputs 2 5 for CH s 1 8 or 9 16 2 PCB 5 Pi a J1 amp J2 are interchangable 12C assemblies are required for 16 ES SO connectors used to add option channels kai A PCB assemblies to the ST 71 5 3 a 398388588 O B 5 eSERERER Socketed precision resistors R1 R8 Ri R3 R5 R7 are 100 ohm terminations for 4 20mA inputs 0 2 VDC voltage inputs may 77 2 Ra HO R be accepted by removing resistor TB2 DC PWR TB2 is for powering bulk power to transmitters or other powered input devices EXC is E 9 o Q 2 a a4 Q 00 wired internally to channel EXC s and EXC CH1 9 CH3 11 CH5 13 CH7 15 to channel LO 20000000000 of EXC HI LO EXC HI LO EXC HI LO EXC HI LO CH2 10 CH4 12 CH6 14 CH8 16 TB1 ANALOG INPUTS CH 1 8 CH 1 8 LO EXC HI LO Typical 2
39. e required option positions e MODEL 7800N4 amp MODEL 7800SS NEMA 4X Wall Mount supports 3 option positions as standard and 4 more with the 093 0306 expansion plate If more than 7 option positions are required the 093 0277 NEMA 4X wall mount option enclosure supporting 8 positions may be added e MODEL 7800XP NEMA 7 Wall Mount supports 5 option positions as standard and 3 more with the 10 0181 expansion plate Figure 6 6 provides Main I O and option PCB dimensions Scott Safety 42 087 0021 Rev F Model 7800 Users Manual 5 125 4 975 T 125 holes 4 places MAIN I O OPTION s PCB FOOTPRINT 15 00 EA 0 0 16 2 56 2 80 Figure 6 6 Scott Safety 43 087 0021 Rev F MODEL 7800 Controller Users Manual Revision E I7 SCOTT SAFETY Monroe Corporate Center PO Box 569 Monroe NC 28111 Telephone 1 800 247 7257 FAX 704 291 8330 www scottsafety com
40. eeds a level then the 10 Fault setpoint must be entered first Toggle the TYPE menu entry to FAULT and enter 10 00 into the setpoint entry Next toggle the menu back to LEVEL and enter the desired Alarm 3 level setpoint The 10 Fault value is retained in memory even though it no longer appears on the menu Channel 2 Channel Xx Channel XX Measurement Hame ALARM 3 Setur ALARM 3 Setur Alarm 1 SetPoint 5 9668 Setpoint 64 00 Alarm 2 Ture Fault Latching HO Alarm 3 Trir On HIGH Data From Tyre LEVEL Linearize Configure Entry Menu Alarm 3 Fault menu If for A3 Level Figure 2 3 2 24 DATA FROM MENU TO SET INPUT SOURCE Channels may be independently configured to accept input data from the following sources also see Figure 2 4 e An analog input PCB attached to the IC bus e A sensor input PCB attached to the C bus e The Modbus RS 485 master port connected to modbus slave devices Note Each Modbus menu selection also requests the RTU and the Alias register location of the data to be retrieved from the RTU Alias register numbers define the location of the variable representing the input value and must be obtained from the manufacturer of the Modbus RTU device EDIT toggles the Data From entry between Analog Analog with Local Cal or Sensor Direct WIRELESS RF900 and Modbus RTU signed unsigned amp floating point Analog should be selected when the channel s input comes from a transmitter or monitorin
41. ement Name Eunits digit ZERO 0 088 SPAN 100 0 Decimal Points Channel On Yes Cory To AN Input Copy To menu Channel gt CALIBRATION Set Zero Set Sran Cal ZERO 4 668 Cal SPAN 58 88 Unity Gain Zeno OFF Searas OFF If input with Local Cal Figure 2 1 Model 7800 Users Manual Channel ALARM Setpoint 66 66 Latching HO Trir On HIGH Tyre LEVEL If for A3 level Channel XX INPUT DATA FROM MODBUS 8 BIT Min Raw aga5a Max Raw an256 Remote ID Bi Alias 33061 Marker Menu Tf input is Modbus Revision E 087 0021 Rev F Model 7800 Users Manual Revision E 2 2 1 CHANNEL SETUP ENTRY MENU The entry menu shown on the left side of Figure 2 1 allows access to all configuration variables for the selected channel These are Alarm 1 Alarm 2 Alarm 3 Data From Linearize Configure and Calibrate 2 22 ALARM 1 ALARM 2 HORN RELAY SET UP MENU Alarms 1 and 2 are identical except Al may not be acknowledged and front panel LED indicators are yellow while A2 s are red Since their configuration menus are the same only one is shown in Figure 2 2 for clarity Channel xx Channel KX Measurement Name ALARM 17 Alarm 1 Setroint Alarm 2 Latching Alarm 3 Trir On Data From On Delay Linear ize Off Delay Bm Configure Horn Drive Yes Entry Menu Alarm 1 or 2 menu Figure 2 2 The first entry determines the Setpoint value where the alarm trips It is entered in engineering un
42. erchangable 12C connectors used to add option 3 pr PCB assemblies to the controller Standard configuration has a 1 Q minute POWER ON time delay 1 sopp 5 preventing relay actuation during Hm 4 the delay SB1 increases delay g u2 P4 Ochi JP4 allows zoning of adjacent time to 8 minutes SB2 removes TT ZONE channel alarms All zoning jumpers all time delay JUMPERS i are placed vertically Dwg exhibits Serica channels 1 4 and channels 5 7 to create creating 2 zones All relays in a zone Ch zones switch together Unused jumpers may be stored horizontally 2 y 2 S 2 000000000000 NO C NC NO C NC NO C NC NO C NC CH1 9 CH3 11 CH5 13 CH7A5 TB1 2Q02000002 20200 NO C NC NO C NC NO C NC NO C NC CH2 10 CH4 12 CH6 14 CH8 16 5 amp form C dry contacts Contacts are unfused Switching inductive loads may create high levels of RFI Use appropriate RFI Snubbers on inductive load devices 8 Channel Discrete Relay Option 10 0195 Figure 3 4 Scott Safety 24 087 0021 Rev F Model 7800 Users Manual Revision E 3 1 3 OPTIONAL BRIDGE SENSOR INPUT BOARD 093 0217 093 0297 An optional 8 channel 12 bit Bridge Sensor Input board allows these popular gas detectors to be connected directly to the MODEL 7800 without additional signal conditioning or transmitters Up to four dual channel 093 0297 modules may be installed in each 8 channel 093 0217 Each
43. ety 27 087 0021 Rev F Model 7800 Users Manual Revision E 3 1 7 OPTIONAL CLOCK PRINTER INTERFACE BOARD 093 0338 When equipped with the 093 0338 Clock Printer Interface option shown in Figure 3 8 the MODEL 7800 Controller is capable of automatically printing time amp date stamped alarm events to a 24 PIN dot matrix printer such as the Panasonic KX P1131 The cable interface between the MODEL 7800 and the KX P1131 may be either parallel or serial Parallel interfaces only allow 6 feet of separation while the RS 232 serial interface allows up to 50 feet Distances up to 4000 feet may be obtained using the 093 0338 printer interface option s RS 422 port but requires an additional tri port RS 422 RS 232 converter at the printer end of the cable The 093 0338 Printer Interface may also be connected to a PC running HyperTerminal or other communications software as an alternative to hard copy printing of the data Printer PC cable schematics are shown in Figure 3 8 Printer settings for serial interfaces are 9600 baud 8 data bits no parity and one stop bit Communications software settings are 9600 baud 8 data bits no parity one stop bit and FlowControl Hardware Printer diagnostic red LED s indicate printer faults such as out of paper overflowed buffer or loss of communications Green LEDs flicker to confirm good communications between the MODEL 7800 and printer during print attempts Examples of printed alarm events are shown bel
44. fferent areas connected to the same MODEL 7800 Controller In these cases it may be undesirable for a sensor on channel 9 to trip the same relay as a sensor on channel 2 The Group menus may restrict this For example channels 1 8 might be set to trip common relay 1 while channels 9 16 trip common relay 2 Another possibility is channels 1 8 be set to trip common relay while channels 9 16 trip relays on an optional discrete relay PCB configured for Alarm 1 see section 3 2 e Failsafe controls relay activation for this common relay Failsafe ON causes the relay to de energize during alarm conditions and energize when there is no alarm Thereby a power failure forces the relay contact to the alarm position Note the common Fault relay is always failsafe and may be monitored separately to indicate loss of power conditions in many applications e A1 and A2 Votes allows creation of logical AND function equations that control common relay I amp common relay 2 Default settings for common relay I are A1 Votes 01 and A2 Votes 00 which causes relay 1 to trip if any channel has an A1 level alarm active Default settings for common relay 2 are A1 Votes 00 and A2 Votes 01 which causes relay 2 to trip if any channel has an A2 level alarm active Example If either default setting is modified such that A1 Votes 02 and A2 Votes 01 then any two channels must have an Al level alarm active and any one channel must have an A2 level alarm active to tr
45. for channels 1 16 1 8 or 9 16 Individual channel alarms may also be configured to not affect the Horn relay on a channel by channel basis see section 2 2 2 e Failsafe amp Horn Group menu entries are identical to the descriptions for menus Common Relay 1 amp Common Relay 1in section 2 3 1 Scott Safety 17 087 0021 Rev F Model 7800 Users Manual Revision E e Turning Acknowledge OFF allows the common Horn relay to drive devices other than horns or sirens such as a light or a fan e Display Alm YES forces the LCD to display the Bar Graphs screen upon any new alarm This feature is offered to satisfy applications requiring channels in alarm to be displayed automatically all channels are displayed on the Bar Graphs screen 2 3 4 COMM PORT MENUS The system Comm Port menu allows setting RTU Slave ID address Slave Baud rate Parity and UART Timer for the comm2 slave Modbus serial port comm1 master port ID settings are per channel as described in section 2 2 4 This slave port may be used to transfer MODEL 7800 data to a host device such as a PC PLC DCS or even another MODEL 7800 The slave port is addressable allowing many MODEL 7800 controllers to be connected to a single RS 485 cable The UART Timer setting is disabled with 00 seconds entered Entering a value causes the comm slave Modbus serial port to reinitialize if no modbus query is processed within this time period This ensures against serial port lockup Section 5 of this
46. g device with a calibrated output such as 4 20mA Analog with Local Cal is available when the MODEL 7800 will be the point of calibration for the analog input Scott Safety 9 087 0021 Rev F Model 7800 Users Manual Revision E Sensor Direct is identical to Analog with Local Cal and both activate the MODEL 7800 s Cal Mode features see section 2 2 7 Problems may arise if calibrations are performed in two places upon the same signal so Cal Mode menus are only visible when Sensor Direct or Analog with Local Cal is selected These selections should only be used when the input originates from a non calibrated signal source such as the Bridge Sensor Input option described in section 3 1 3 These applications require the MODEL 7800 to be used as the calibration point since the sensors have no zero or span controls Chann Channel el Xx INPUT DATA FROM RK Channel INPUT DATA FROM KA INPUT DATA FROM Sensor Direct Min Raw 64806 64986 Alarm 1 Alarm 2 Analog Input Min Raw 98808 Max Raw 04000 Marker Menu e Analog Input Min Raw 96868 Max Raw 84980 Marker Menu Alarm 3 m Data From Linearize Configure Max Raw 12 Bit Analog Inputs may be direct from Sensor Input options or Voltage Current Input options With Local CAL With Local CAL Entry menu Sensor Direct with Analog Input with Analog input Local Cal Local Cal L ds Eee ee e oe The Modbus Mas
47. gured for 2 or 4 wire operation A 26 pin ribbon cable connects the I O PCB to the MODEL 7800 CPU and Display nest assembly Two TC bus connectors allow addition of optional functions such as analog I O and discrete alarm relays for each channel Horizontal jumpers installed in JP1 connect the RS 485 port s RX amp TX lines simplifying 2 wire daisy chains by providing additional terminals for incoming and outgoing cables For example installing the 2 COM 1 jumpers connects screw terminals Scott Safety 20 087 0021 Rev F Model 7800 Users Manual Revision E 1 amp 5 and terminals 3 amp 7 Socketed RS 485 terminating resistors R6 COMM 1 and R12 COMM 2 are located on the MAIN I O board These resistors should be removed if communication wire lengths are very short less than 25 feet or if the port is not at the end of the communication line An optional Auxiliary Relays piggyback PCB part 093 0222 may be added to the I O PCB via ribbon cable J4 These add another form C contact set to the common A A2 and HORN alarms Auxiliary Relay contacts are available at the TB1 AUX terminals shown in Figure 3 1 J1 is 26 pin ribbon to A MAIN I O BOARD SI main controller 2 Ji NU Es ALARM ES SPARE RESET TB3 allows external A O Alarm Reset contacts Spare shorting strips oo J4 a comm COMM2 ke Ribbon connector to 6A 2222 TX1 RX1TX2 RX2 J2 amp J3 connect to o
48. ing sensors apply power to the system Note this PCB requires 24VDC power be connected to its TB2 terminals 1 amp 2 as shown in Figure 3 5 Suitable fused power is available from the Main I O board s TB2 terminal 10 amp 12 see Figure 3 1 Measure the voltage between each channel s A and R terminals and set the Voltage Adjust potentiometers for the correct sensor excitation voltage 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 A covered by a dollop of RTV or similar material after completion of this n procedure to avoid accidental over voltage conditions 2 Remove system power and connect sensor wires to the R C A terminals Reapply system power and confirm correct voltage across each sensor s A amp R terminals Note If sensor wires are long it may be necessary to measure the excitation voltage at the sensor end to compensate for I R losses in the wiring 3 With the minus voltmeter lead on TB2 2 common connect the plus lead to the channel s test point With zero air on that sensor adjust its Balance potentiometer for 4 volts at the test point Scott Safety 25 087 0021 Rev F Model 7800 Users Manual Revision E 4 Apply 50 LEL combustible 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
49. ip that relay REMEMBER One of the Al s and the A2 could be on the same channel These level alarms must come from a channel included in the Group entry described above e Turning Acknowledge ON not available on Alarm 1 allows the common relay to be deactivated during alarm conditions by an Alarm Reset This is useful if an audible device is being driven by the relay All 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 Relay wiring should be kept separate from low level signal wiring 2 3 2 093 0269 DISCRETE RELAY FAILSAFE MODE 093 0269 Discrete relay options may also be configured to function in a Failsafe mode using the System Setup menu shown in Figure 2 12 Entering YES causes these discrete Scott Safety 16 087 0021 Rev F Model 7800 Users Manual Revision E relays to have energized coils when no alarm condition exists for the associated channel and de energized coils when the alarm occurs Failsafe is useful for indicating failed relay coils and loss of power conditions Important 093 0269 zoning jumpers see Figure 3 4 should not be used when Discrete Relays menus are set for failsafe Zoning jumpers cause ANY relay in the zone to energize ALL other relays in the same zone Zoning of failsafe relays may be accomplished with wiring at the relay contact terminals
50. is included as a standard feature It is useful in applications where it may be inconvenient to open the enclosure s door to access the touch keypad 1 2 7 APPROVALS CSA C22 2 No 1010 1 and ISA 82 02 CSA C22 2 No 152 for combustibles UL 1604 C22 2 No 213 Div 2 Groups A B C D EN55011 amp EN61000 CE Mark CSA File 219995 and may be seen at CSA International org SECTION 2 2 0 BASIC OPERATION The MODEL 7800 offers 3 graphic screens for viewing monitored data and a Set Up menu screen for operator interface to configuration menus They are shown below in Figure 2 0 The Bar Graphs screen allows viewing of all active channels simultaneously The Trend screen displays a 24 hour trend one channel at a time The Combination screen displays a bar graph large engineering units and a 30 minute trend one channel at atime Input channels may be displayed in sequence with the UP DOWN keys The NEXT key switches between the 3 graphic data screens When MODEL 7800 power is applied the graphic LCD returns to the screen active when power was last removed Setup menus are entered by pressing EDIT from any data screen and scrolling to the desired menu using the UP DOWN keys Pressing EDIT again enters the selected menu s tree of variables 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 An
51. ister 3 registers per channel ASCII Value 8 40598 40600 3 n a 2 characters per register 3 registers per channel ASCII Value 9 40601 40603 3 n a 2 characters per register 3 registers per channel ASCII Value 10 40604 40606 3 n a 2 characters per register 3 registers per channel ASCII Value 11 40607 40609 3 n a 2 characters per register 3 registers per channel ASCII Value 12 40610 40612 3 n a 2 characters per register 3 registers per channel ASCII Value 13 40613 40615 3 n a 2 characters per register 3 registers per channel ASCII Value 14 40616 40618 3 n a 2 characters per register 3 registers per channel ASCII Value 15 40619 40621 3 n a 2 characters per register 3 registers per channel ASCII Value 16 40622 40624 3 n a 2 characters per register 3 registers per channel Memory Floating Point Notes Returned as 15 bit 2s complement with 5 over under range applied Therefore this must be considered when scaling values to be displayed at the modbus master The following equation may be used to determine a value for display Display Value MODBUS Value Span Value Zero Value 1 1 4 Zero Value Span Value Zero Value 05 32767 Type Channel First Last Read FC Write FC Notes Channel Value 1 16 33001 16 n a 4 n a 15bit 2s complement w 5 over under range Analog Output Notes 12 bit integer for Channel Reading value 800 counts zero value 4000 counts 100 value Type Channel First Last Read FC Write FC Notes Channel 1 16
52. its For example if a channel monitors 0 50 ppmH2S and the alarm must trip at 10 ppm the correct entry is 10 00 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 group s common relay front panel LED and optional discrete relay to latch NO allows all outputs for this alarm to automatically reset as soon as the alarm condition clears e TRIP ON is set to HIGH for increasing alarms or LOW for decreasing alarms to determine if the alarm activates upon exceeding or falling below the setpoint e The ON DELAY OFF DELAY entries allow ON and OFF time delays affecting how long the setpoint 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 The HORN ON entry allows linking this alarm to the common horn relay NO causes the alarm to have no effect upon the horn relay Entering YES causes this alarm to turn the horn relay on steady or to pulse it depending upon horn configuration in the system menu see section 2 3 1 Discrete LED indicators on the front panel indicate the status of each alarm and relay Any new alarm event causes the associated LED to flash until Alarm Reset occurs causi
53. lected One hour later record the MAX MIN amp AVERAGE values The difference between MAX amp MIN indicates peak to peak excursions over the one hour period and AVERAGE is the average for the hour Longer or shorter tests may also be run The numeric value shown below the bar graph indicates number of minutes samples have been taken After 999 minutes the AVERAGE buffer overflows and the message ERROR appears in the AVERAGE field Exiting this screen resets the buffer and clears the error message Scott Safety 3 087 0021 Rev F Model 7800 Users Manual Revision E 1 2 SPECIFICATIONS 1 2 1 DC POWER SUPPLY REQUIREMENTS Standard MODEL 7800 power requirements are 10 30VDC 3 watts applied to terminals 9 amp 11 of TB2 on the standard I O PCB see section 3 0 Optional features increase power consumption as described below e Discrete Relay PCB option add 2 watts per PCB assumes all 8 relays are energized e Analog Input PCB option add 1 2 watt e 4 20mA Output PCB option add 1 watt e Catalytic Bead Sensor Input option add 12 watts max assumes maximum sensor power consumption e TB2 terminals 10 amp 12 of the standard I O PCB provide a maximum of 500mA fused output power for powering of auxiliary external devices such as relays lamps or transmitters Power consumed from these terminals should be considered when calculating system power consumption 1 2 1a 150 WATT AC 24VDC POWER SUPPLY 110 120 VAC 3 2A max 220
54. manual provides important information describing how to interface to the MODEL 7800 s Modbus slave port The Mastr TO master time out and Mastr PR master poll rate menu items affect the MODEL 7800 s master Modbus port Time out sets length of time in milliseconds before a communications error Three consecutive timeout errors must occur before a communication error is indicated This item is useful for optimizing throughput to the MODEL 7800 from other slave RTU s Poll Rate sets frequency of data requests to the RTU s in milliseconds This is useful when an RTU is limited in how fast it may respond to consecutive data requests The Echo ACK echo acknowledge menu allows alarm reset alarm acknowledge functions be sent from the modbus master port to connected modbus slave devices having modbus coil 2001 assigned as the reset acknowledge coil This menu may be set to OFF LCL local or MB LCL modbus local Off disables the feature and 2001 coils of slave devices are unaffected LCL only writes to the 2001 coils of connected RTU s when the local Reset pushbutton is pressed MB LCL writes these coils it this MODEL 7800 s 2001 coil has been reset via mobus AND when the local pushbutton is pressed The MB LCL option is useful if MODEL 7800 s are being cascaded from and HMI or other modbus master A short time delay between reset of remote RTU s and the primary MODEL 7800 may occur since remote resets are processed first IMPORTANT
55. n see Figure 2 6 For Sensor Life to record properly the monitor must perform as follows After the Calibration Marker interval 4 0mA transmits for 10 seconds to indicate its calibration mode is complete The monitor then transmits between 4 0mA and 5 0mA for five seconds depending on remaining sensor life where 4 0mA 0 and 5 0mA 100 remaining sensor life The MODEL 7800 reads this value and records it as the channel s Sensor Life Sensor Life is stored in the MODEL 7800 modbus database and displayed as a bar graph in the Sensor Info screen see section 2 3 6 Itis a useful tool for planning sensor replacement schedules Scott Safety 11 087 0021 Rev F Model 7800 Users Manual Revision E Monitoring Cal Marker detected 2 2 5 LINEARIZATION MENU Mark As 6 dig field indicated on readouts Figure 2 6 4mA for 10 seconds after Cal Exit Then 4 5mA for 5 seconds Monitoring it Cal Marker 4 event expires The linearization menu allows each channel to have its own linearization curve stored in the controller s non volatile memory Input versus output points must be entered in percent of full scale values This means if the range is 0 200 ppmH2S then 100 ppm is 50 of full scale Zero input will provide a zero output and 100 input a 100 output Nine intermediate points may be entered to define the curve Channel XX Measurement Na Alarm 1 Alarm 2 Alarm 3 Data Fr
56. n and O for off e Clean only with a damp cloth without solvents e Equipment not used as prescribed within this manual may impair overall safety Scott Safety 1 087 0021 Rev F Model 7800 Users Manual Revision E 1 0 GENERAL DESCRIPTION The Scott Safety Model 7800 16 Sixteen channel Controller is designed to display and control alarm event switching for up to sixteen sensor data points It may also be set as an eight channel controller for applications needing fewer inputs Alarm features such as ON and OFF delays Alarm Acknowledge and a dedicated horn relay make the MODEL 7800 well suited for many multi point monitoring applications Data may be input to the MODEL 7800 by optional analog inputs or the standard Modbus RTU master RS 485 port A Modbus RTU slave RS 485 port is also standard for sending data to PC s PLC s DCS s or even other MODEL 7800 Controllers Options such as analog I O and discrete relays for each alarm are easily added to the addressable IC bus Option boards have 8 channels and therefore require 2 boards for 16 channel applications In addition to traditional analog and serial methods of providing monitored values the MODEL 7800 is also capable of sending and receiving wireless data as described in section 7 of this manual A 240 x 128 pixel graphic LCD readout displays monitored data as bar graphs trends and engineering units System configuration is through user friendly menus and all configuration d
57. ne This is demonstrated in the noisy area of the 24 hour trend in Figure 2 0 If the MAX amp MIN values are within 2 of each other there is no need for the vertical line and only the AVERAGE value pixel is darkened as in the quiet areas The top portion of each trend screen indicates channel real time reading in engrg units measurement name range and MIN MAX amp AVERAGE values for the preceding 24 hour period The SI field on the top right indicates number of seconds remaining in the current 6 minute subinterval 1 1 2 BAR GRAPHS SCREEN The MODEL 7800 Bar Graphs screen shown in Figure 2 0 allows all active channels to be viewed simultaneously Both engineering units values and bar graph values are indicated in real time Lines across the bars indicate the alarm trip points making it easy to identify channels at or near alarm A feature in the Systems menu tree allows new alarms to always force the LCD to the bar graphs screen This is useful for applications requiring channels with alarms to be displayed 1 1 3 COMBINATION SCREEN The MODEL 7800 Combination screen shown in Figure 2 0 offers a view of a single channel but displays the data as a 30 minute trend bar graph and large engineering units It is also useful for testing inputs for stability since MAX MIN amp AVERAGE values refresh each time this screen is selected For example to test stability over a one hour period for an input begin timing as soon as the channel is se
58. ng an acknowledged steady on condition Operators should recognize new alarms by a flashing LED Alarm Reset also acknowledges or deactivates the horn relay until another new alarm occurs All relays are rated at 5 Amp for 28 VDC and 250 VAC RESISTIVE loads A IMPORTANT Appropriate diode DC loads or MOV AC loads snubber devices Scott Safety 8 087 0021 Rev F Model 7800 Users Manual Revision E must be installed with inductive loads to prevent RFI noise spikes Relay wiring should be kept separate from low level signal wiring 2 2 3 ALARM 3 FAULT ALARM MENU The discrete channel alarms identified as Alarm 3 Fault may be configured either as a 3 level alarm or as a Fault alarm indicating the input is out of range in the negative direction When used as a level alarm features such as on off delays latching and trip direction are also available It is important to understand that though discrete channel alarms LED s amp optional discrete relays may be set as Alarm 3 level alarms the common relay for this group is always a Fault alarm The fault out of range threshold for the channel is the most recent Fault trip point entered prior to changing the menu to Alarm 3 The following example describes how to configure both the Fault out of range and Alarm 3 level trip points for a channel Example If the common Fault relay must trip as the input falls below negative 10 of full scale and the discrete alarms trip as the input exc
59. ng with the MODEL 7800 s optional 12 bit Analog Input PCB the MIN should be 800 and the MAX 4000 If the input device s resolution is unknown the live counts variable on the bottom of the screen displays actual raw A D counts currently being read by this channel This reading may be used to test the input device for what A D counts are provided for zero and 100 if these values are unknown Forcing the input device to read zero should provide the A D counts value needed to make this channel s display also read zero Likewise forcing the input device to read 100 should provide the A D counts value needed to make the MODEL 7800 channel s display also read 100 If Modbus 32 BIT is selected a Byte Order entry appears at the bottom of the menu This determines WORD and BYTE alignment of data at the remote Modbus transmitter when sending its 4 byte IEEE Floating Point values With the pointer on this entry the EDIT key toggles between the 4 possible modes Min Max Raw values are not used in this mode Scott Safety 10 087 0021 Rev F Model 7800 Users Manual Revision E Note Each Data From item has a matching default Min Max counts value of 20 to 100 with 5 over under range applied If the default value is incorrect for the input device it should be edited 2 2 46 MARKER MENUS Some transmitters or monitoring devices providing MODEL 7800 inputs also indicate special modes of operation such as Calibration Maintenance or Fault by
60. oltage within the instrument enclosure that may be sufficient magnitude to constitute a risk of electric shock WARNINGS e Shock Hazard Disconnect or turn off power before servicing this instrument e 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 6 2 A e Only the combustible monitor portions of this instrument have been assessed by CSA for C22 2 No 152 performance requirements e This equipment is suitable for use in Class I Division 2 Groups A B C and D or non hazardous locations only e WARNING EXPLOSION HAZARD SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS I DIVISION 2 e WARNING EXPLOSION HAZARD DO NOT REPLACE FUSE UNLESS POWER HAS BEEN SWITCHED OFF OR THE AREA IS KNOWN TO BE NON HAZARDOUS e WARNING EXPLOSION HAZARD DO NOT DISCONNECT EQUIPMENT UNLESS POWER HAS BEEN SWITCHED OFF OR THE AREA IS KNOWN TO BE NON HAZARDOUS e Use a properly rated CERTIFIED AC power mains cable installed as per local or national codes e 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 rate CERTIFIED fuse or current limiter is required to installed as per local or national codes Markings for positions of the switch or breaker should state I for o
61. om Linearize Configure Entry menu 2 2 6 CONFIGURE MENU me Input Out put 10 00 10 00 20 00 20 00 Channel XX Linearization 30 00 30 00 40 00 40 00 50 00 50 00 60 00 60 00 70 00 70 00 80 00 80 00 90 00 00 Linearization menu Figure 2 7 From the entry level setup menu in Figure 2 8 the CONFIGURE menu may be entered for setting variables defining how the controller presents monitored data to the various graphic displays Channel XX Measurement Alarm 1 Alarm 2 Alarm 3 Data From Linearize m Configure Entry menu Scott Safety Name Measurement Eunits Zero Span Deci mal Channel XX CONFIGURATION Name PCTLEL 0 000 100 0 Points 0 Channel On YES Copy To Input Copy To menu Figure 2 8 12 087 0021 Rev F Model 7800 Users Manual Revision E 2 2 6a EUNITS MEASUREMENT NAME ASCII DATA FIELDS The first two items in this menu are for entering the 6 character engineering unit and 16 character Measurement Name ASCII fields Eunits should define the units of measure for what this channel is to display Measurement Name should describe the source of this data in the user s terminology Section 2 1 1 of this manual describes how to use the front keypad to modify these fields 2 2 66 INPUT MEASUREMENT RANGE The ZERO SPAN entries allow configuration of the measurement range displayed by this channel Measurement Range works along with A
62. ow The format of each event from left to right is DATE TIME 16 character ASCII channel ID from the MODEL 7800 MODEL 7800 channel alarm IN or OUT status A buffer in the MODEL 7800 retains the most recent 30 35 printed events It is possible to dump the entire buffer to the printer from the menu shown in Figure 3 9 This is useful if printer problems have occurred causing missed printouts 05 22 03 08 21 00 Storage Tank 103 Chnl 1 Alarm 2 IN 05 22 03 08 21 01 Storage Tank 103 Chnl 1 Alarm 2 OUT 05 22 03 09 12 01 Storage Tank 103 Chnl 13 Alarm 1 IN 05 22 03 09 13 00 Fuel A Flow Chnl 9 Alarm 1 IN 05 22 03 09 13 05 Storage Tank 103 Chnl 1 FAULT IN 05 22 03 09 13 05 Fuel Dock Chnl 2 FAULT IN 05 22 03 09 40 10 Storage Tank 103 Chnl 13 Alarm 2 IN 05 22 03 09 40 14 Fuel Dock Chnl 2 FAULT OUT 05 22 03 09 40 14 Trans Pump 103 Chnl 3 FAULT OUT 05 22 03 09 40 14 Storage Tank 103 Chnl 1 FAULT OUT 05 20 03 11 53 37 Fuel A Flow Chnl 9 Alarm 1 OUT Scott Safety 28 087 0021 Rev F Model 7800 Users Manual Revision E LED Status Indicators Optional Expansion Port 12C Interface to Controller Serial Port Status Indicators TX232 PRINTER INTERFACE RX422 2 RS232 SERIAL CABLE DIAGRAM 50 MAX TX422 10 0229 END DB9 F PRINTER END DB25 M Y2 Zz Z N B1 6 DSR A 20 DTR 2RXD 270 jp 3 RXD va O O 1 o L ok U 586 5 786 L 1560 RS 232 Serial Port 6220 01
63. ower Supply Option 10 0172 Figure 3 8 SECTION 4 4 0 SYSTEM DIAGNOSTICS A System Diagnostic Mode shown in Figures 4 1 and 4 2 may be entered during normal operation from the Setup menu The entry menu indicates firmware revision and offers useful routines for testing front panel LED s relays serial ports and analog I O Itis exited manually by pressing NEXT and automatically if no keys are pressed for 5 minutes Itis very important to understand that CHANNEL INPUT DATA A IS NOT PROCESSED DURING THE DIAGNOSTICS MODE It is A possible to miss important input values while utilizing this mode and appropriate safeguards should be in place However the Diagnostics Mode Scott Safety 30 087 0021 Rev F Model 7800 Users Manual Revision E can prove invaluable when testing I O since relays and analog outputs may be stimulated without driving inputs to precise levels Scott Safety ot MAR MIM Gk InFuts will not be Processed While in diagnostics mode Alarm Relay and Analog Outeuts mas change causing undesirable states affec ing esyiFmen connected to this controller Press EDIT to enter diagnostics Ans other key to exit HCH dd EE ee od od dak ARE YOU SURE sekk Sapa AR a ae Press EDIT to enter diagnostics Ans other key to exit Common Relays Discrete Relays Piezo Serial Ports Analog Outputs Analog Inputs Alarm LEDS Printer Port Connected I 70 Diagnostics menu Figure 4 1 31 087 0021 Rev F
64. ptional Auxilliary p EE O 0100 12C optional I O Common Relay PCB 7 A2 NO 8 HORN NO S 9 A2 COM 10 HORN COM AUX RELAY BOARD OPTIONAL U U U2 U4 LON Fuses DC OUT power to option boards that U U require 24 VDC U3 U5 TB1 AUX RELAYS OPTION 10 0144 l 5 Install horizontal shorting strips 1A1 NO 2 N A ler Je z in JP1 for 2 wire RS 485 operation SPARE COME ANA 10 0144 shown in A face W l APER 5A1 NC 6 N A dotted lines com RS 485 terminating resistors aje gt RR remove for short wire paths amp when ST 71 is not end of path 11 A2 NC 12 HORN NC asccao a TB1 TB2 z om 1 TN apply only nominal 24 VDC 1A1 NO 2 A3 NO 1 COMM1 RXA 2 COMM2 RXA min 10 VDC max 30 VDC power 3A1 COM_ 4A3 COM 3 COMM1 RXB 4 COMM2 RXB e 43 dame 43 to terminals 9 amp 11 of TB2 5A1 NC GA3 NC 5 COMM1 TXA 6 COMM2 TXA 2 LT comme e N 7A2 NO 8HORN NO 7 COMM1 TXB 8 COMM2 TXB TB1 TB2 DC OUT TB2 terminals 10 8 12 provide 9A2 COM 10 HORN COM 9 DC IN 10 DC OUT S commi Master GO Fused 24 VDC power to ST 71 11 A2 NC 12HORN NC 11 DCIN 12DC OUT her COMM2 Slave Ds optons GOATS Tequinng SUCH power COMM1 Master COMM2 Slave Main I O PCB WITH COMMON RELAYS 10 0142 Figure 3 1 3
65. s connected to J2 and J3 However I C cables are limited in ability to carry this power further than a few feet without a significant voltage drop Some MODEL 7800 applications with relays for all 48 alarms may require up to 6 boards TB2 allows a heavier 5VDC power cable to be connected from terminals on the back of the MODEL 7800front panel assembly bypassing the FC cable A 20AWG pair connected to only one of the several TB2 s is sufficient when these boards are in close proximity to each other All 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 Relay wiring should be kept separate from low level signal wiring TB2 is used to supply external S1 controls if discrete relays are tripped by 5VDC power to Alarm boards A1 A2 or A3 alarms for Ch s 1 8 or 9 16 when they are mounted gt 5 See Chart feet from the controller I2C ASSY 10 0195 8 CH DISCRETE RELAY tag cables provide 5VDC but losses Wire TO CPU gt occur with longer cable lengths ale 1 salscie Che 1 8 JE A YN MEE RATE See AS WARNING Voltages exceeding 5 SEEN aa 6 volts may cause extensive ee S1 7 Ch1 8 A3 damage to entire controller f szo TB2 S1 us Ui E J2 amp J3 are int
66. t supervisory or training assistance should be obtained before use Factory assistance is available by calling 800 247 7257 2011 Scott Safety SCOTT the SCOTT SAFETY Logo Scott Health and Safety Model 7800 Model 7600 are registered and or unregistered marks of Scott Technologies Inc or its affiliates All other trademarks are owned by their respective owners SEG TI N Tirana 1 IMPORTANT SAFETY ISSUES unne 1 1 0 GENERAL DESCRIPTION 2 en 2 1 1 DATA DISPLAY SCREENS Lune eder 2 1 1 1 TREND SCREEN Aisne fee tio arial entered es ba pe ia ie pwe 3 142 BAR GRAPHS SCREEN cc bce cach dee eee kn ide 3 14 3 GOMBINATION SGREEN as 22 duse die tail idad 3 1 2 SPEGIFICA TIONS Lue ap eee ied eee 4 1 2 1 DC POWER SUPPLY REQUIREMENTS prsest ataata neinei aaae Radian E aiii 4 1 2 1a 150 WATT AC 24VDC POWER SUPPLY runoranvrrnnvennvvrnvvrnvvensvervrervrersrervrrverrrersseeener 4 122 NN 4 1 2 3 AMBIENT TEMPERATURE RANGE ronevornvrvrnvvrnvvrnvvennvevsrervrervseessrersrervrersrsrerrerverereenee 4 1 2 4 HUMDITY RANGE vere Fasade ae ele ei a det eters 4 125 ALTITUDE otra seede gb aldea ie 4 120 HOUSINGS meierier onein guten dia Ankenes dekade set 4 1 2 6a NON INTRUSIVE MAGNETIC KEYPAD rurnrvrrvvvrvrvrvrnevrnvvrnvvrnsrrrnerrnvvrnservsrerseevsrervrernne 5 12 70 ARPROVA Sita platillo eel det 5 SECTION 2 kika ks kase vein scdesdiensdeaadswodausgavedesstavedawidesadesedsvedauedswsdecauawedadsvauudessieas 5 2 0 BASIC OPERATIONS 5 2
67. t Therefore if calibration is to be performed at another transmitter or monitoring device the MODEL 7800 CAL MODE feature should not be used The CALIBRATION MENU allows entering the correct Cal ZERO amp Cal SPAN set point values needed to calibrate the sensor These are entered in the same engineering units as input range Set Zero amp Set Span controls in this menu allow pushbutton calibration by moving the pointer to each and pressing the EDIT key A live reading of the channel s value allows calibration checks to see if an adjustment is needed Unintentional calibrations are reset by the Unity Gain menu item Unity Gain resets zero offset to O and span gain to 1 It 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 it is new and again at later dates when degradation may have occurred To check zero calibration apply the ZERO calibration value to the sensor and observe the live reading If the zero reading differs from the zero setpoint a calibration is needed To calibrate zero move the pointer to Set Zero and press EDIT A warning message explains that pressing EDIT again will change the zero calibration and any other key will exit The procedure for span calibration is identical For example if an LEL combustible sensor is to be spanned with 50 LEL span gas the span set point must be 50 If 45 LEL is to be used later the span se
68. t Name and Eunits fields may have many ASCH character possibilities Allowed ASCII characters are as follows ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz blank space l amp 0123456789 lt gt EDIT places a cursor over 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 it into non volatile memory where it is retained indefinitely With no cursor present NEXT closes open menus in reverse order and returns the LCD to the most recent data display Scott Safety 6 087 0021 Rev F 2 2 CHANNEL CONFIGURATION MENUS Figure 2 1 illustrates the menu tree for configuring Channel variables These items affect only the specific channel selected System specific variables are in the menu tree shown in section 2 3 Linearize Configure Entry Menu Scott Safety CHANNEL MENUS TREE Channel ALARM Setpoint 20 00 Latching HO Trir On HIGH On Delay ans Off Delay 68m Horn Drive Yes Alarm 1 or 2 menu Channel Ka ALARM 3 Setpoint 5 000 gt Ture FAULT Alarm 3 Fault menu Channel ka INPUT DATA FROM m Analog Input Min Raw dasan Max Raw 646868 Marker Menu Input From menu Channel xx ation Input Output 16 66 20 60 38 88 40 00 50 00 50 60 70 00 30 00 94 08 Linearization menu Channel XX CONFIGURATION Measur
69. t point must be changed to 45 to match the span calibration gas If the reading is only 40 LEL with the 50 gas applied a span calibration is needed Move the pointer to the Set Span entry and press EDIT twice Unity Gain may be used at anytime to cancel incorrect calibrations and start again Channel KA Channel KA Measurement Name CALIBRATION Alarm 1 Set Zero Alarm 2 Set Span Alarm 3 Cal ZERO 4 668 Data From Cal SPAN 54 88 Linearize Units Gain Configure Zeros OFF Calibrate Seat ax OFF Entry Menu If input with Local Cal Figure 2 9 Scott Safety 14 087 0021 Rev F Model 7800 Users Manual Revision E 2 3 SYSTEM CONFIGURATION MENUS Some items needing configuration are not specific to a channel but affect the entire MODEL 7800 system These are located in the system entry menu shown on the left side of Figure 2 10 System menus are accessed by pointing to the desired item and pressing EDIT System Setur Relay 72 SYSTEM CONFIGURATION MENUS Votes entry determines the number channels needed to set Relay 1 or Relay 2 Grour Failsafe OFF Al Votes a A2 Votes Acknowledge is disabled when no A2 Votes are entered RI R Ai Failsafe NO A2 Failsafe HO AS Failsafe YES Discrete Relay System Setur Horn Relay Common Relay 1 Piezo Alarm OFF Common Relay 2 Alarm 1 BEEF Disc Relay Alarm 2 OW Horn Piezo Failsafe Off Comm Ports Horn Grour 1 16 8 16 Ch Mode Acknowledge YES
70. ta base Update AVG n a 2066 n a n a 5 Moves 24 hour MIN data trend to trend data base Update MAX n a 2067 n a n a 5 Moves 24 hour AVG data trend to trend data base This update requires several seconds Therefore a data ready register is available to notify the master upon completion Type Channel First Last Read FC Write FC Notes MIN Ready n a 12065 n a 2 n a 0 data ready 1 update in progress AVG Ready n a 12066 n a 2 n a 0 data ready 1 update in progress MAX Ready n a 12067 n a 2 n a 0 data ready 1 update in progress Trend database registers Type Channel First Last Read FC Write FC Notes 24 hr Trend 1 16 33017 36857 5 n a Transfers 24 hour trend for MAX MIN or AVG Scott Safety 37 087 0021 Rev F Model 7800 Users Manual Revision E SECTION 6 6 1 093 0280 PANEL RACK MOUNT ENCLOSURE The MODEL 7800PM shown in Figure 6 1 is a half width 19 rack enclosure It is supplied with hardware that allows mounting in either a full width 19 rack style cabinet or it may be panel mounted in a rectangular cutout Only two 8 channel I O option PCB s such as analog input or discrete relays may be mounted directly to the back of the enclosure Additional 8 channel I O option PCB s must be located external from the assembly on another mounting plate A 3 foot length of IC cable is also supplied for this purpose Weight is approximately 7 pounds Properly ground the enclosure and follow national and local electrical codes
71. ter RS 485 port supports 1 most integer types resolutions and formats MODBUS 16 BIT menu indicates 16 bit is maximum but also supports 8 10 1 12 bit formats by editing Min Max Raw menus to contain the correct counts range Channel XX INPUT DATA FROM MODBUS 16 BIT Min Raw Bazan MB 16BIT SIGNED Min Raw anana WIRELESS RF9 B Min Raw 60200 MaxRaw 1998 Remote ID a Marker Menu Input Rea VALUE Battery y Min Raw Baal MaxRaw Badi Remote ID Bl Alias 33001 Bute Order ABCD MaxRaw atasa Remote ID ai Alias 96061 Marker Menu MaxRauw 1009 Remote ID Bi Alias 33001 Marker Menu The WIRELESS RF900 INPUT option should only by used with our proprietary wireless monitors The MODBUS 16 BIT menu may used 16 BIT Modbus 16 BIT SIGNED Wireless Monitor 32 BIT Modbus with most wireless modems if a wireless Modbus modbus interface is required Figure 2 4 2 2 4a MIN MAX RAW COUNTS MENUS The Min Raw and Max Raw counts entries included in Input Data From menus define the range of input counts that provide Measurement Range read out values described in section 2 2 6b This menu entry is determined by the A D converter resolution of the channel s input For example if the input is a 10 bit Modbus device with zero at 200 counts and 100 at 1000 counts then this menu s MIN should be set at 200 and MAX at 1000 If communicati
72. troller may be powered from 10 30VDC However many applications require 24VDC power for the monitors or transmitters providing inputs to the MODEL 7800 A 150 watt AC DC power supply may be included for these applications 115VAC or 230 VAC selected via slide switch When ordered from the factory it is pre wired to provide 24VDC primary power for the MODEL 7800 controller as well as any transmitters or monitors that may be connected by the end user I O59590595050 O 05050505050 2568686808686 VADJ 03050505050 Y 050505050 389988998 r 2 18 025252505 4 Amp 5x20mm fuse located under aa 0252592090 cover To access disconnect power 6262626 and remove A screw amp B plastic pin Mw av 080800 then slide cover left and lift 09 1 gogo 362 ae Ge 1 6 v O50 WARNING For continued protection 08080 Q against fire replace only with same 05050 v ven l p o type and rating of fuse Do SO609 FREE jon pe TETs 7 096906 f FG gt j 2 18 OL6L627 1 i A OXO OD L N 100 240 1 6262626 VAC 3 2A 0868586861 LD L B 0o80808080 1 FEAT TT 1 a 08888888 GA RISK OF ELECTRICAL operation se seed va site sin SHOCK DISCONNECT OR TURN OFF POWER 08989380 09303080 Q BEFORE SERVICING 80980800 098282898 EQUIPMENT 690 09069090 2 00 AC RANGE M SELECTOR SWITCH 150 Watt 24 VDC P
73. use the controller to never process inputs applied to this channel and no alarms will be tripped or data displayed Inactive channels have a line drawn through them on the Setup screen as indicated by channels 15 amp 16 in Figure 2 0 If less than 9 channels are to be activated the MODEL 7800 may be set for 8 channel mode deactivating channels 9 16 This is done in the System Setup menu described in section 2 3 The MODEL 7800 will only allow 15 channels to be turned off At least one channel must remain on 2 2 6e COPY DATA TO This menu simplifies the Setup procedure by allowing similar channels to be copied from one to another For example if all channels are identical except for the Measurement Name entry channel 1 could be configured and copied to channels 2 16 Only Measurement Name then must be configured on channels 2 16 Use EDIT to increment channel numbers and UP DN to point to Copy Now Press EDIT once more to copy Scott Safety 13 087 0021 Rev F Model 7800 Users Manual Revision E 2 2 7 CAL MODE IMPORTANT Each channels CALIBRATION menu is inactive unless it s Input Data From menu described in section 2 2 4 is set for Analog with Local Cal or Sensor Direct MODEL 7800 CAL MODE features allow 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 poin

7800 Controller - User Manual

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