7600 Controller - User Manual
Contents
1. Plug In 100 ohmR Install only if channel is 4 20mA input 5 Internal controller ckts Sensor wiring Ch 1 shown For 4 20mA inputs use 3 amp 5 REF ANA and do not install 10 0192 module LEL Sensor Ch 1 Ch 9 Typical CATBEAD Sensor Option 2210 0191 10 0192 Figure 3 7 Scott Safety 19 087 0018 Rev B Model 7600 Controller Users Manual Revision B 3 4 OPTIONAL 4 20mA ANALOG OUTPUT BOARD 093 0215 An optional 10 bit 4 20mA analog output board shown in Figure 3 7 may be connected to the bus Each channel s output will transmit 4mA for 0 readings and 20mA for 10096 readings Loop drive capability depends upon the level of the 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 This PCB requires 24VDC power be connected to it s TB2 terminals 1 amp 2 as shown in Figure 3 7 Suitable power is available from the Main I O board s TB2 terminal 10 amp 12 see Figure 3 1 0010 1109 ASSY 10 0152 REV A ST 35 ANALOG OUTPUT BOARD TE 24 VDC power for output current loops must be 22 supplied through TB2 z Connect to2. 8 2 2 5 ALARM 3 FAIL ALARM osssssnnnnsnnnnnnnnnnsannnunnnnnnnnnnnnnnnnnnnnnnnnnn taa 8 2 2 6 RANGE OF A D COUNT O uuu iii 9 2 2 7 MODBUS SENSOR OR ANALOG 0 52 2 22222222 242 9 2 2 8 GOPY DATA TQ3 o 10 2 3 SYSTEM CONFIGURATION MENUS nununnnnnnnnnnnnnnnnnnnnnnnnnnunnnnnnnnnnnnnnnnnnnnnnnnnnunnnnnennnnnnnn 10 2 3 1 AUTHORIZATION MODE 2 2 iie niet va rus our ds 10 2 3 2 ACTIVATING CHANNELS SCAN nn 11 2 3 3 ALARM 2 RELAY ACKNOWLEDGE anannnunannnnnnnnnnnnunnnnnnnnnnnnnunnnnnnnnnnnnnnnunnnnnnnnnnnnunune 11 2 3 4 ALARM SCAN PRIORITY coi curante MR D UT e 11 2 3 5 FAIL SAFE NORMAL ALARMS annnununnnnnnnnnnnnnunnnnnnnnnnnnunnnnnnrnnnnnnnnnnnnnnnnnnnnnunnnnnnnnnnnn 11 2 3 6 MASTER SLAVE SERIAL PORT 05 2 0 2 12 SECTION S eena M 12 3 0 MAIN I O INTERFACE 093 0216 093 0568 12 3 1 OPTIONAL ANALOG INPUT PCB 093 0214 nunnnnnnnnnnnnnnnnnnnnnnnnnnunnnnnnnnnnnnnnnnnnnnnnnnnnnnnnune 13 3 2 OPTIONAL DISCRETE RELAY PCB 093 0217 4 16 3 3 OPTIONAL CATALYTIC BEAD SENSOR INPUT BOARD 093 0217 17 3 3 1 CATALYTIC BEAD SENSOR INITIAL 2 2 17 3 4 OPTIONAL 4 20mA ANALOG OUTPUT BOARD 093 0
3. 10 00 x E M 6 La ay ge 8 50 H Note 4 mounting holes are 31 diameter SHOCK HAZARD ADD LOCKING DEVICE TO CLASP 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 30 087 0018 Rev B Scott Safety 4 To avoid electric shock grounding must be installed by the customer as part of the installation Non metallic enclosures do not provide grounding between conduit connections Model 7600 Controller Users Manual Revision B 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 ing attached to the hub on the inside of the enclosure Ground ing bushings have provisions for connection of a grounding wire Non metallic conduit and hubs require the use of a grounding wire in the conduit Grounding bushings are not required System grounding is provided by connection wires from all con duit entries to the subpanel or to other suitable point which pro vides continuity Any device having a metal portion or portions extending out of the enclosure must also be properly grounded TYPICAL GROUNDING ILLUSTRATIONS METALLIC CONDUIT NON METALLIC CONDUIT CONNECTOR LOCKNUT GROU
4. DN SELECTS C XXXX UNLOCKED NAME J ohn Doe Scan Timer 10s Channels 1234 Alarm 2 Relay Acknowledge On Alarm Scan Priority Off Alarm 1 Relays Bo Beto dg vm Normal Alarm 2 Relays Fail Safe Slave Port 9600 Baud Id 1 Master Port 9600 Baud Measurement Name a UP DOWN T UP DOWN Section 2 0 1 FUNCTION EDIT Section 2 3 1 UP DOWN Section 2 3 2 UP DOWN Section 2 3 3 UP DOWN Section 2 3 4 UP DOWN Section 2 3 5 T UP DOWN Section 2 3 6 UP DOWN Note Arrows Key Strokes 087 0018 Rev B Model 7600 Controller Users Manual Revision B 2 2 1 CAL MODE IMPORTANT Figure 2 3 CAL MODE menus are only visible if the Input Data From menu described in section 2 2 7 is set for Sensor Figure 2 3 illustrates how the CAL MODE menus function to allow push button calibration of zero and span values The correct zero and span set point values must be entered in order for the to make the correct adjustments This feature should be utilized only when there are no other zero span controls within the monitoring system since it is inappropriate to calibrate the same signal at more than one point Therefore if calibration is to be performed at another transmitter or monitoring device the CAL MODE feature should not be used Unintentional calibrations are reset by the UNITY GAIN menu Unity gain sets zero offset to
5. 3 Scott Safety 4 087 0018 Rev B Measurement Name FUNCTION F NORM E EDIT C1 UP DN SELECTS CH AjDCnts 905 O TT Edit Cal Mode UP DOWN Edit Unity 000777 H 1 Resets Cal Mode UP DOWN 0 000 Cal Zero i 50 0 Cal Span UP DOWN EUNITS D P 0 Measurement Name UP DOWN 0 000 PCTLEL Enter Zero Value UP DOWN 100 0 PCTLEL Enter 100 Value UP DOWN Alarm1 Horn Off 20 00 Latch N H UP DOWN Alarm 1 Delays On 05 Off Om T UP DOWN Alarm2 Horn Beep 40 00 Latch Y H 1 UP DOWN Alarm 2 Delays On 5s Off 5m UP DOWN 5 000 Latch N F Fault UP DOWN 905 800 4000 Input Min Max UP DOWN Input Data From Analog 12 Bit UP DOWN A a TAE ET 1 gt i 1 Alias 33001 1 UP DOWN Copy Data To Channel 1 UP DOWN Scott Safety Model 7600 Controller Users Manual LCD OPERATOR INTERFACE MENU TREES CHANNEL MENU TREE See Section 2 2 y 0 PCTLEL Section 2 0 pum AS EDIT 0 PCTLEL 1 Edit Cal Zero 1 These menus appear only if SENSOR is selected in the Input Data From menu Section 2 2 2 Section 2 2 3 Section 2 2 4 Section 2 2 5 Section 2 2 6 Section 2 2 7 This menu appears only if Modbus is selected in the Input Data From menu Section 2 2 8 Figure 2 2 Revision B SYSTEM MENU TREE See Section 2 3 HAY 0 PCTLEL F NORM E EDIT SY UP
6. Alarm 3 level alarms the common relay for this group is always a Fail alarm The out of range threshold for the channel is the most recent Fail trip point entered prior to changing the menu to alarm 3 The following example describes how to configure both the Fail and Alarm 3 trip points for a channel If it is desired for the common Fail relay to trip as the input falls below negative 1046 of full scale and the discrete alarms trip as the input exceeds a level the 10 Fail value must be entered first Toggle the A F character on the right side of the top line to F and enter 10 00 into the value entry Next toggle the A F character back to A and enter the desired Alarm 3 trip level The Fail value is retained in memory although it no longer appears on the menu Scott Safety 8 087 0018 Rev B Model 7600 Controller Users Manual Revision B 10 00 Latch N F 96 Fault Figure 2 7 2 2 6 RANGE OF A D COUNTS The menu in Figure 2 8 defines what range of A D analog to digital counts will provide Measurement Range read out values entered previously in section 2 2 3 This menu entry is determined by the A D converter resolution of the channel s input For example if the input is a 12 bit Modbus device with zero at 800 counts and 100 at 4000 counts then this menu s MIN should be set at 800 and MAX at 4000 If communicating with the s optional 12 bit Analog Input PCB the MIN should be 800 and the MAX 4000 905 800 4000 Input Min
7. Main I O PCB terminals 10 8 12 of TB2 1205 n E J1 amp J2 are interchangable 12C u8 U7 connectors used to add option PCB assemblies to the ST 71 m 2 048V REF C AL R19 REF ADJ Ref Adj allows trimming voltage i on TP1 2 048 volts provides 20mA 4196 outputs with 100 of full scale readings Ut U2 U3 U4 U5 U6 02 04 06 08 010 012 10000600000 LO H 10 H LO H LO HI LO HI CH2 CH3 CH4 CHS CHE 4 20mA ANALOG OUTPUTS Figure 3 8 Scott Safety 20 087 0018 Rev B Model 7600 Controller Users Manual Revision B 3 5 OPTIONAL 24VDC 60 WATT POWER SUPPL Y 093 0570 The Controller may be powered from 10 30VDC or 18VAC from a step down isolation transformer However many applications require 24VDC power to drive the monitors or transmitters providing inputs to the A 60 watt AC DC power supply Figure 3 9 may be included for these applications This supply has a universal 100VAC to 240VAC input range and requires no modification between 115VAC and 220VAC installations When installed at the factory it is pre wired to provide 24VDC primary power for the controller as well as any transmitters or monitors that may be connected by the end user 9 00 000000 3 Amp 5x20mm fuse located under cover O and lift of tuse O o To access disconnect power and remove A screw amp B plastic pin then slide cover left Q O WARNING For continued protection against O fire replace
8. O and span gain to 1 A D Cnts 905 0 PCTLEL Edit 2 Cal Mode Edit Cal Zero Reading Zero Cal Set Point Press Up Dn Edit Unity 51 PCTLEL Resets Cal Mode Edit Cal Span Reading Span Cal Set Point Returns to 0 000 Cal Zero Normal Mode 50 0 Cal Span Figure 2 3 The bottom line of the top left menu in Figure 2 3 allows access to the calibration menus by pressing EDIT EDIT brings up the CAL ZERO display at the top right of Figure 2 3 The top line displays the live channel value in engineering units and the bottom line states EDIT ZERO CAL It is important to understand that pressing EDIT now will force this channel s reading to match the zero set point value previously entered Therefore the sensor should have the appropriate stimulus to provide a response approximating the zero set point Pressing the Up or Down buttons from the CAL ZERO menu brings up the CAL SPAN menu Pressing EDIT will cause a span adjustment forcing the reading to match the span set point value previously entered Again the sensor should have the appropriate stimulus to provide a response approximating the span set point For example if an LEL combustible sensor is to be spanned with 50 LEL Scott Safety 6 087 0018 Rev B Model 7600 Controller Users Manual Revision B span gas the span set point must be 50 If 45 LEL is to be used later the span set point must be changed to 45 to match the span calibration gas 2 22 D
9. OPTIONAL ANALOG INPUT PCB 093 0214 Many transmitters or sensors have analog output signals and the 10 bit Analog Input PCB shown in Figure 3 2 is available to accept these TB1 with 24 positions offers four terminals per channel to distribute power and receive analog inputs These are EXC and HI LO inputs TB2 with only two positions is for connecting the power supply for powering external transmitters SB1 and SB3 are solder bridge configuration jumpers that determine the wiring between TB1 amp TB2 Precision 100 ohm resistors R1 R6 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 EXC and IN LO terminals are bussed together as shown by the wiring schematic in Figure 3 3 EXC terminals are tied directly to TB2 2 EXC terminals are tied directly to TB2 1 when solder bridge jumper SB1 is in the A position IN LO terminals are tied to TB2 1 when SB is in the position With SB3 installed all EXC terminals are tied to the chassis earth ground SB1 in the A position and SB3 installed are normal factory settings This provides terminals for landing drain wires from shielded cables and bussing allows transmitter power to be brought into the system Scott Safety 13 087 0018 Rev B Model 7600 Controller Users Manual Revision B at a single point Transmitter power is available at each cha
10. TB2 comm 1 COMM RXA 2 COMM2 RXA 3 COMM1 RXB 4 COMM2 RXB 5 COMM1 6 COMM2 7 1 TXB 8 COMM2 TXB qu 9DCIN 10 DC OUT 11 DC IN 12 DC OUT COMMT Maste COMM1 Master COMM2 Slave COMM2 Slave COMM1 Mastt r COMM2 Slav 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 24 087 0018 Rev B Model 7600 Controller Users Manual Revision B 5 1 MODBUS SLAVE REGISTER LOCATIONS The following table describes the 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 s may also be multi dropped onto the same cable MemoryIntAsciiRW Notes ASCII which may be read 2 characters at a time or in strings using a multiple register read Description Alias R FC W FC Type Channel 1 tag 40401 40408 3 na Ascii 2 characters
11. a locking mechanism after installation to prevent access to high voltages by unauthorized personnel see Figure 6 2 A 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 on 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 1 0 GENERAL DESCRIPTION The Scott Safety Model 7600 Six Channel Controller is designed to monitor display and control alarm event switching for up to six sensor data points Alarm features such as ON and OFF delays Alarm Acknowledge and a dedicated horn relay make the well suited for many critical multi point monitoring applications Sensor data may be input to the by optional analog inputs or the standard Modbus RTU master port A Modbus RTU slave port is also standard for sending data to PC s PLC s DCS s or even other Controllers Options such as analog I O and discrete relays for each alarm are easily added to the addressable bus A high intensity LED display scans the six channel valu
12. position devisor Channel 5 zero decimal 41011 3 n a decimal position devisor Channel 6 zero decimal 41012 3 n a decimal position devisor Channel 1 span real 41013 3 n a real w o decimal point Channel 2 span real 41014 3 n a real w o decimal point Channel 3 span real 41015 3 n a real w o decimal point Channel 4 span real 41016 3 n a real w o decimal point Channel 5 span real 41017 3 n a real w o decimal point Channel 6 span real 41018 3 n a real w o decimal point Channel 1 span decimal 41019 3 n a decimal position devisor Channel 2 span decimal 41020 3 n a decimal position devisor Channel 3 span decimal 41021 3 n a decimal position devisor Channel 4 zero decimal 41022 3 n a decimal position devisor Channel 5 zero decimal 41023 3 n a decimal position devisor Channel 6 zero decimal 41024 3 n a decimal position devisor Channel 1 alarml real 41025 3 n a real w o decimal point Channel 2 alarml real 41026 3 n a real w o decimal point Channel 3 alarml real 41027 3 n a real w o decimal point Channel 4 alarml real 41028 3 n a real w o decimal point Channel 5 alarml real 41029 3 n a real w o decimal point Channel 6 alarml real 41030 3 n a real w o decimal point Channel 1 alarm1 decimal 41031 3 n a decimal position devisor Channel 2 alarm decimal 41032 3 n a decimal position devisor Channel 3 alarm1 decimal 41033 3 n a decimal position devisor Channel 4 alarm1 decimal 41034 3 n a decimal position devisor Channel 5 alarm1 decimal 41035 3 n a decimal position dev
13. reg Channel 2 tag 40409 40416 3 na Ascii 2 characters reg Channel 3 tag 40417 40424 3 na Ascii 2 characters reg Channel 4 tag 40425 40432 3 na Ascii 2 characters reg Channel 5 tag 40433 40440 3 na Ascii 2 characters reg Channel 6 tag 40441 40448 3 na Ascii 2 characters reg Channel 1 eunits 40449 40451 3 na Ascii 2 characters reg Channel 2 eunits 40452 40454 3 na Ascii 2 characters reg Channel 3 eunits 40455 40457 3 na Ascii 2 characters reg Channel 4 eunits 40458 40460 3 na Ascii 2 characters reg Channel 5 eunits 40461 40463 3 na Ascii 2 characters reg Channel 6 eunits 40464 40466 3 na Ascii 2 characters reg Channel 1 Ascii value 40467 40469 3 na Ascii 2 characters reg Channel 2 Ascii value 40470 40472 3 na Ascii 2 characters reg Channel 3 Ascii value 40473 40475 3 na Ascii 2 characters reg Channel 4 Ascii value 40476 40478 3 na Ascii 2 characters reg Channel 5 Ascii value 40479 40481 3 na Ascii 2 characters reg Channel 6 Ascii value 40482 40484 3 na Ascii 2 characters reg MB FItPtMemRO Notes Returned as 15 bit 2s complement with 5 oner underrange applied Description Alias R FC W FC Type Channel 1 float value 33001 4 na 2s comp 15 bit integer Channel 2 float value 33002 4 na 2s comp 15 bit integer Channel 3 float value 33003 4 na 2s comp 15 bit integer Channel 4 float value 33004 4 na 2s comp 15 bit integer Channel 5 float value 33005 4 na 2s comp 15 bit integer Channel 6 float value 33006 4 na 2s comp 15 bit integer MemoryIntRO Not
14. 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 into a FAULT condition upon sensor failure or removal This option may also be configured to accept 4 20mA inputs for mixing catalytic bead 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 s electronic Cal Mode menus 3 3 1 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 Scott Safety 17 087 0018 Rev B Model 7600 Controller Users Manual Revision B I Prior to connecting sensors apply power to the system Note this PCB requires 24VDC power be connected to its TB2 terminals 1 amp 2 as shown in Fi
15. the controller 2 minute POWER ON time delay x sel A preventing relay actuation during the delay SB1 increases delay I 3 2 JP4 ocn allows zoning of adjacent time to 8 minutes SB2 removes BONE Maier channel alarms All zoning jumpers all time delay cra are placed vertically Dwg exhibits Install WE channels 1 4 and channels 5 6 vertically cns 3 to create cno Creating 2 zones All relays in a zone Ch zones switch together Unused jumpers may be stored horizontally K2 K4 K5 K WARNING S1 POSITION 5 NOT ALLOWED NO C NC NO C NC NO C NC CH1 CH3 CHS 0001900 Y O NO C C NC NO C NC CH2 CH4 CHE 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 6 Channel Discrete Relay Option 10 0196 Figure 3 6 3 3 OPTIONAL CATALYTIC BEAD SENSOR INPUT BOARD 093 0217 An optional Catalytic Bead Sensor Input board allows these popular combustible gas detectors to be connected directly to the without additional signal conditioning or transmitters Up to three dual channel 093 0297 modules may be installed in each 8 channel 093 0217 Each 093 0297 channel is equipped with a bridge amplifier and balance potentiometer and an adjustable switching
16. 215 20 3 5 OPTIONAL 24VDC 60 WATT POWER SUPPLY 093 0570 21 SECTION A 2 dl 22 4 0 SYSTEM DIAGNOSTICS vyonnnsssssnsnsssssssnnnnnnssssnnnnnnsnnn sn nn dame mand RK RKA o RR nd 22 SECTION o cla de DO ic 24 5 0 MODBUS RS 485 PORTS sosssbedduodicesdnodas 24 5 1 MODBUS SLAVE REGISTER LOCATIONS annnunannnnnnnnnnunnnnnnnnnnnnnnnunnnnnnnnnnnnnnnunnnnnnnnnnn 25 SECTION AA A A E EE 29 6 1 093 0330 PANEL RACK MOUNT ENCLOSURE 29 6 2 093 0282 NEMA WALL MOUNT ENCLOSURE 30 6 3 093 0284 NEMA 7 EXPLOSION PROOF WALL MOUNT ENCLOSURE 32 Model 7600 Controller Users Manual 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 DA dangerous voltage 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
17. 4 fault real Channel 5 fault real Channel 6 fault real Channel 1 fault decimal Channel 2 fault decimal Channel 3 fault decimal Channel 4 fault decimal Channel 5 fault decimal Channel 6 fault decimal Scott Safety 41056 41057 41058 41059 41060 41061 41062 41063 41064 41065 41066 41067 41068 41069 41070 41071 41072 Ww U WwW 28 n a n a n a n a n a n a n a n a n a n a n a n a decimal position devisor decimal position devisor decimal position devisor decimal position devisor decimal position devisor real w o decimal point real w o decimal point real w o decimal point real w o decimal point real w o decimal point real w o decimal point decimal position devisor decimal position devisor decimal position devisor decimal position devisor decimal position devisor decimal position devisor 087 0018 Rev B Model 7600 Controller Users Manual Revision B SECTION 6 6 1 093 0330 PANEL RACK MOUNT ENCLOSURE The PM 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 6 channel I O option PCB s such as analog input or discrete relays may be mounted directly to the back of the enclosure Additional 6 channel I O option PCB s mu
18. ECIMAL POINT RESOLUTION ASCII FIELDS The Figure 2 4 menu sets the 6 character engineering unit and 16 character Measurement Name ASCII fields Only uppercase letters and numbers 0 9 may be displayed in the engineering unit field since it is difficult to display lowercase letters on the large alphanumeric LED readout The Measurement Name field is displayed only on the LCD and supports upper and lowercase letters along with many other symbols Resolution of channel values is also 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 auto ranging displays the highest resolution allowed by this decimal point entry For example if three decimal points are entered and the range is O 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 causes Oppm to display 0 and 100ppm to display 100 EUNITS D P 20 Measurement Name Figure 2 4 2 2 93 MEASUREMENT RANGE The menus shown in Figure 2 5a amp 2 5b allow configuration of the measurement range displayed on this channel These menus work in conjunction with the A D Counts menu describ
19. ECTION 2 2 0 BASIC OPERATION Modes of operation are configured via the Operator Interface LCD display After initial power up Normal mode operation is in effect causing both displays to scan active channels see Figure 2a An alternative Alarm Priority mode may be configured that only scans channels with alarms see Figure 2b Normal or Alarm Priority mode operation may be halted by initiating the Manual mode allowing unlimited duration viewing of any channel see Figure 2c Manual mode is entered by pressing the UP DOWN keys simultaneously and using UP or DOWN to step to the desired channel A Set Up mode is entered by pressing FUNCTION scrolling to the desired menu tree using the UP DOWN keys and pressing EDIT see Figure 2d This Set Up mode may be exited by pressing FUNCTION again System critical alarm event switching of relays and front panel alarm LED indicators is not affected by entering the Set Up mode An Scott Safety 3 087 0018 Rev B Model 7600 Controller Users Manual Revision B AUTHORIZATION MENU feature may be utilized to prevent malicious and accidental tampering with alarm parameters 0 PCTLEL SCANNING ALARMS Measurement Name Measurement Name Figure 2a Normal Figure 2b Alarm MANUAL SCAN F NORM E EDIT C1 Measurement Name UP DN SELECTS CH Figure 2c Manual Figure 2d Set Up 2 1 SYSTEM CONFIGURATION Each Controller requires configuration of system and channel variables upon initial installati
20. ED Alarm Reset also turns off the horn relay until another new alarm occurs The bottom line of this menu determines the alarm s trip point value latching or non latching and high or low trip The trip point is entered in engineering units After the Latch icon entering Y causes that alarm to require a manual Alarm Reset to clear Y latches this alarm group s common relay this channel s LED and the optional discrete relay 1f so equipped The far right character on the bottom line may be set to H for high trip alarms or L for low trip alarms determining if the alarm becomes active upon exceeding or falling below the trip point Alarm1 Horn Beep Alarm 1 Delays 20 00 Latch N H On 5s Om Figure 2 6a Figure 2 6b The menus shown in Figure 2 6b allow entering ON and OFF time delays affecting how long the trip point must be exceeded before an alarm event transition occurs ON delays are limited to 10 seconds and OFF delays may be as long as 120 minutes Delays are useful in many applications for preventing nuisance alarms and unwanted cycling into and out of alarm conditions 2 2 5 ALARM 3 FAIL ALARM The discrete channel alarms identified as Alarm 3 Fail may be configured either as a 34 level alarm or as a Fail alarm providing notification that the input is out of range in the negative direction This is controlled by the menu shown in Figure 2 7 It is important to understand that even though the discrete channel alarms may be set as
21. Max Figure 2 8 For questions what to enter in this menu the variable on the left side of the top line displays actual raw A D counts currently being read by this channel This may be utilized to test the input device for what 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 channel s display also read 100 2 2 7 MODBUS SENSOR OR ANALOG INPUTS Each channel may be independently configured to accept input data from the Modbus RS 485 master port or from an analog input card attached to the bus EDIT toggles the Figure 2 9a menu between Modbus RTU Analog or Sensor Within each of these possibilities are additional choices to accommodate the binary resolution of the input data 8 bit 10 bit 12 bit etc With Modbus selected the menu shown in Figure 2 9b 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 floating point variable representing the input value Analog should be selected when the channe s input comes from a transmitter or monitoring device with a calibrated output such as 4 20mA Sensor is identical to analog except it activates the s Cal Mode feature Problems may arise if calibr
22. Model 7600 Controller Users Manual Revision B S A F ET Y INSTRUCTION MANUAL Model 7600 6 CHANNEL CONTROLLER 087 0018 REVISION B Modbus is a registered trademark of Modicon Corp 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 B 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 Cat Bead Input PCB 10 0191 093 0217 Dual Channel Cat Bead Input PCB 10 0192 093 0297 60Watt Panel Mount Power Supply 10 0153 093 0570 Main I O Controller PCB 10 0142 093 0216 Auxiliary Relay PCB 10 0144 093 0222 Panel Rack Mount Enclosure ST35PM 093 0330 10 0207 Wall Mount Enclosure Fiberglass ST 35N4 093 0282 Wall Mount Enclosure Explosion Proof ST 35XP 093 0284 6 Channel Relay PCB 10 0196 093 0217 I O Controller PCB 10 0166 093 0216 Main I O Controller PCB 10 0213 093 0568 Optional Analog Input PCB 10 0171 093 0214 Optional 4 20mA Analog Out PCB 10 0152 093 0215 Model 7600 Controller Users Manual Revision B WARRANTY Scott Safety a Division of Scott Technologies Inc warrants to Buyer that at the time of
23. N MODE The system menu in Figure 2 11 allows locking variables that might prevent critical alarm events if altered Viewing menus is not denied but attempts to edit variables displays a brief System Locked message on the LCD Authorized individuals locking the system should first enter a name phone or some sort of contact information into the 10 digit field on the bottom line To lock or unlock the system the correct 4 digit authorization number must be entered into the XXXX field UP or DOWN then toggles the UNLOCKED message to LOCKED It is important to record the 4 digit code since the factory must be consulted if lost XXXX UNLOCKED NAME 4099257808 Figure 2 11 Scott Safety 10 087 0018 Rev B Model 7600 Controller Users Manual Revision B 2 3 2 ACTIVATING CHANNELS SCAN TIMER The system menu in Figure 2 12 allows configuration of scan time and inactive channels The scan timer entry on the top line of this menu sets how many seconds displays remain on an active channel while scanning This may be from 1 99 seconds The Channels entry on the bottom line determines what channels are active A dash appears for inactive channels as demonstrated in channels 5 amp 6 below Inactive channels are not displayed and do not contribute to alarm events Scan Timer 10s Channels 1234 Figure 2 12 2 3 3 ALARM 2 RELAY ACKNOWLEDGE This menu allows the ALARM 2 common alarm relay to be acknowledged This means that while
24. NDING BUSHING GROUNDING WIRE GROUNDING CONNECTION Figure 6 3 31 087 0018 Rev B Model 7600 Controller Users Manual Revision B 6 3 093 0284 NEMA 7 EXPLOSION PROOF WALL MOUNT ENCLOSURE The XP shown in Figure 6 4 is aluminum NEMA 7 wall mount enclosure designed for mounting into potentially hazardous areas Eleven 6 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 110 pounds Properly ground the enclosure and follow national and local electrical codes 17 3 4 XS k 22 3 8 FRONT VIEW MOUNTING HOLE DIMENSION HORIZONTAL POSITION 15 W 12 7 8 H VERTICAL POSTIION 7 W 21 H EN NO BOTTOM VIEW 3 4 CONDUIT ENTRY 4PLACES 7 MOUNTING FOOT HORIZ POSITION ST 71XP NEMA 7 EXPLOSION PROOF Scott Safety Figure 6 4 32 91 16 2 CONDUIT ENTRY 087 0018 Rev B Model 7600 Controller Users Manual Revision B Scott Safety 33 087 0018 Rev B Model 7600 Controller Users Manual I7 SCOTT SAFETY Monroe Corporate Center PO Box 569 Monroe NC 28111 Telephone 1 800 247 7257 FAX 704 291 8330 www scottsafety com
25. R ul TX1 RX1TX2 RX2 J2 amp J3 connect to optional Auxilliary lO 0100 12C optional I O Common Relay PCB D IU IDA AUX RELAY BOARD OPTIONAL U U 02 U4 19 Fuses DC OUT power to option boards that U U require 24 VDC TB1 AUX RELAYS OPTION 10 0144 A ANE Install horizontal shorting strips 1A1 NO 2 N A Optional Aux Relay in JP1 for 2 wire RS 485 operation 3A1 COM 4N A piggyback Board 00000 Pi qo IA 5 A1 NC 6 N A v IAS om RS 485 terminating petas 7 A2 NO 8 HORN NO TB1 AUX 6 2 PRE remove for short wire paths 9A2 COM 10 HORN COM 22 PWR when 57 71 is not end of path NC T12 HORN NE 0 3 8 7 64 TB1 TB2 VP TL Seong TIR Apply only nominal 24 VDC 1A1 NO 2 NO 1 1 RXA 2 COMM2 RXA min 10 VDC max 30 VDC power 3 A1 COM 4 A3 COM 3 COMM1 RXB 4 COMM2 RXB 2 OP 40 42 2 4 8160 12 to terminals 9 8 11 of TB2 1 6 A3 NC 5 COMMI TXA 6 2 TXA comm2 7 2 8 7 COMM TXB 8 COMM2 TXB _ TB1 TB2 DC OUT UE tertninals 1 08 12 provide MELSOM 10 DC IN IDE OUTS GO COMM1 Master gt options boards E uiring such power 11 A2 NC 12HORN NC 11DCIN 12 DC OUT her COMM2 Slave quiring power COMM1 Master COMM2 Slave Main I O PCB WITH COMMON RELAYS 10 0142 Figure 3 1 3 1
26. an alarm 2 event exists the relay may be deactivated by an ALARM RESET This is useful for silencing audible devices while personnel work to correct the alarm condition Alarm 2 Relay Acknowledge On Figure 2 13 2 3 4 ALARM SCAN PRIORITY With the Alarm Scan Priority feature activated only channels with alarms are scanned by the displays If no alarms exist then all active channels are scanned With only one channel in alarm scanning halts on that channel Alarm Scan Priority Off Figure 2 14 2 3 5 FAIL SAFE NORMAL ALARMS These two menus allow ALARM 1 and ALARM 2 common and optional discrete relays to be configured for fail safe or normal operation Fail safe means alarm conditions force the relay contacts to their power off or shelf state Therefore if the loses power the contacts will indicate the alarm condition rather than a safe condition The common FAIL relay is always fail safe and is typically used to signal trouble conditions such as power or signal loss Scott Safety 11 087 0018 Rev B Model 7600 Controller Users Manual Revision B Alarm 1 Relays Alarm 2 Relays Fail Safe Normal Figure 2 15a Figure 2 15b 2 3 6 MASTER SLAVE SERIAL PORT MENUS The final two menus in the system tree shown in Figures 2 16a amp 2 16b allow setting baud rates for the master slave Modbus serial ports The RTU address of the slave port is also entered here This slave port may be used to transfer data to a host d
27. as analog I O and discrete alarm relays for each channel gt 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 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 Scott Safety 12 087 0018 Rev B Model 7600 Controller Users Manual Revision B 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 Al 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 52 MAIN 1 O BOARD 69 main controller lt J1 4 A ALARM TB3 SPARE RESET TB3 allows external O Alarm Reset contacts Spare shorting strips SS SS COMM1 COMM2 Ribbon connector to 6o P
28. ations are performed in two places upon the same signal so Cal Mode menus are only visible when Sensor is selected The Sensor selection should only be used when the input originates from a non calibrated signal source such as the Catalytic Bead Sensor Input option described in section 3 3 Applications such as this require the to be used as the calibration point since the sensor signal has no zero and span adjustments Scott Safety 9 087 0018 Rev B Model 7600 Controller Users Manual Revision B Input Data From RTU 1 Analog 12 bit Alias 33001 Figure 2 9a Figure 2 9b 2 2 8 COPY DATA TO This menu simplifies the Set Up 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 first and copied to channels 2 6 Only Measurement Name would then need to be configured on channels 2 6 Use EDIT to activate the cursor then UP DN to select the channel to copy to Press EDIT once more to copy Copy Data To Channel 2 Figure 2 10 2 3 SYSTEM CONFIGURATION MENUS Some items requiring configuration are not specific to each channel but affect the entire system These are located in the system menu tree shown in Figure 2 2 on the right side of the page System menus are accessed by pressing FUNCTION then DOWN until the SY icon appears in the upper right of the LCD readout then EDIT 2 3 1 AUTHORIZATIO
29. 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 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 T
30. devices such as relays lamps or transmitters Power consumed from these terminals should be considered when calculating system power consumption 1 2 1 60 WATT AC 24VDC POWER SUPPLY 100 240 VAC 2 0A max Scott Safety 2 087 0018 Rev B Model 7600 Controller Users Manual Revision B The 093 0570 60 watt power supply Figure 3 9 is for powering the and up to 6 transmitters minimum of 5 watts per channel is available for powering of external transmitters 1 22 AMBIENT TEMPERATURE RANGE 25 to 50 degrees C 1 2 3 HUMIDITY RANGE 0 TO 9096 R H Non Condensing 1 2 4 ALTITUDE Recommended up to 2000 meters 1 2 5 HOUSINGS e General purpose panel mount weighing 7 Ibs and including hardware for 19 rack mounting Figure 6 1 e NEMA 4X wall mount in fiberglass enclosure weighing 17 lbs Figure 6 2 e NEMA 7 wall mount suitable for DIV 1 amp 2 Groups B C D weighing 110 lbs Figure 6 4 Includes non intrusive magnetic keypad 1 2 5a NON INTRUSIVE MAGNETIC KEYPAD The operator interface includes five front panel touch keys A magnetic keypad option offers these five keys with adjacent magnetic keys This option is included as a standard item when ordering NEMA 4X weather resistant or NEMA 7 explosion proof enclosures It is useful in applications where it may be inconvenient to open the enclosure s door to access the touch keypad 1 2 6 APPROVALS CSA C22 2 No 1010 1 and ISA 82 02 EN55011 amp EN61000 CE Mark S
31. ed in section 2 2 6 and normally match 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 100 value equal 10 00 The six ASCII engineering units previously entered are automatically displayed to the right of the value as a reminder The entire 4 digits must appear in this entry so trailing O s may appear here that are not displayed on the LED readout 0 000 EUNITS 100 0 PCTLEL Enter Zero Value Enter 100 Value Figure 2 5a Figure 2 5b Scott Safety 7 087 0018 Rev B Model 7600 Controller Users Manual Revision B 2 24 ALARM 1 ALARM 2 HORN RELAY SET UP The menus shown in Figure 2 6a amp 2 6b allow configuration of ALARMS 1 amp 2 and how each affect the horn relay There are two each of the menus in Figure 2 6 affecting ALARM I identical to ALARM 2 The AlarmX Horn XXXX menu shown in Figure 2 6a may be set for Beep Off or On Beep causes the horn relay to pulse ON OFF each second when the alarm is active On causes the horn relay to be continuous when the alarm is active Off causes the alarm to have no effect upon the horn relay 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 causing an acknowledged steady on condition Operators should recognize new alarms by a flashing L
32. es All other trademarks are owned by their respective owners IMPORTANT SAFETY ISSUES 00 0 nb et a lali 1 1 0 GENERAL DESCRIPTION ssssnssssssnssssssssnnnnnsnssnnnnnnsnsssnnnnnnnnsnsn oe RR RR RR 1 1 1 SPEGIFIGATIONS a LEE 2 1 2 DC POWER SUPPLY REQUIREMENTS uunnnavnnnnnnannnnnnnnnnnnnunnnnnnnnnnnnunnnnnnnnnnnnnnnunnnenennnnn 2 1 2 1 60 WATT AC 24VDC POWER SUPPLY i uuuvnnnnnnnnnunnnnnnnnnnnnunnnnnnnnnnnnnunnnnnnnnnnnnnnnnnnenenn 2 1 2 2 AMBIENT TEMPERATURE RANGE vannnnnanannnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnunnnnnnnnnnnnnnnunnnen 3 1 2 3 HUMIDITY RA NGE T e 3 1 2 4 ALTITUDES to 3 1 2 5 HOUSING S m EE 3 1 2 5a NON INTRUSIVE MAGNETIC 3 1 2 6 APPROVALS mE 3 SECTION Da 3 2 0 2 5 022 RAN 3 2 1 SYSTEM CONFIGURATION vsvannnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnann 4 2 1 1 CHANGING VARIABLES USING THE KEYPAD 4 2 2 CHANNEL CONFIGURATION MENUS ueeranannnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnunnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 4 2 2 1 GAL lez 6 2 2 2 DECIMAL POINT RESOLUTION ASCII 5 2 7 2 2 3 MEASUREMENT RANGE iaa id RR Rn nn 7 2 2 4 ALARM 1 ALARM 2 HORN RELAY 5 2
33. es Channel a d value direct a d counts Alarm status words are bits packed into 16 bit integer where Isb Channel 1 alarm status and msb relay status Description Alias R FC W FC Type Channel 1 a d value 31001 4 n a 16 bit integer Channel 2 a d value 31002 4 n a 16 bit integer Channel 3 a d value 31003 4 n a 16 bit integer Channel 4 a d value 31004 4 n a 16 bit integer Channel 5 a d value 31005 4 n a 16 bit integer Channel 6 a d value 31006 4 n a 16 bit integer Scott Safety 25 087 0018 Rev B Model 7600 Controller Users Manual Revision B 16 bit packed status 16 bit packed status 16 bit packed status 16bit packed integer 16bit packed integer 16bit packed integer 16bit packed integer 16bit packed integer 16bit packed integer 16bit packed integer 16bit packed integer 16bit packed integer 16bit packed integer 16bit packed integer 16bit packed integer 16bit packed integer 16bit packed integer 16bit packed integer 16bit packed integer 16bit packed integer 16bit packed integer alarml status 31007 4 n a alarm2 status 31008 4 n a alarm3 status 31009 4 n a MemoryIntRW Notes Integer representing current channel being displayed Description Alias R FC W FC current Channel 30250 4 n a CoilDbase Notes Set this coil to issue an alarm acknowledge via modbus Description Alias R FC W FC remote alarm ack 2001 n a 5 MemoryDiscreteRO Notes May be read as single discrete or packed with multiple register read Description Alia
34. es at a programmable rate These 12 alphanumeric digits indicate channel value with polarity and six digits of engineering units A 2 line by 16 character LCD display provides operator interface to Set Up menus allowing configuration for a wide range of industrial applications All Scott Safety 1 087 0018 Rev B Model 7600 Controller Users Manual Revision B configuration data is retained in non volatile memory during power interruptions The LCD also indicates each channel s 16 character Measurement Name field when not being utilized for operator interface This field displays user terminology descriptions of each channel The front panel is shown below in Figure 1 1 100 PPMHga5S Ch Value Units Alarm 2 166 25 Measurement Hame Alarm 1 Operator Interface Alarm 3 Fail Up Down Function Edit Alarm Reset Figure1 1 1 1 SPECIFICATIONS 1 2 DC POWER SUPPLY REQUIREMENTS Standard power requirements are 10 30VDC amp 30 watts max 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 Analog Input PCB option add 1 2 watt 4 20mA Output PCB option add 1 watt Catalytic Bead Sensor Input option add 9 watts max depends upon sensor power TB2 terminals 10 amp 12 of the standard I O PCB provide a maximum of 500mA fused output power for powering of auxiliary external
35. evice such as a PC PLC or DCS The slave port is addressable allowing many controllers to be connected to a single RS 485 cable Section 5 of this manual provides important information describing how to interface to the s Modbus slave port Slave Port Master Port 9600 Baud Id 1 9600 Baud Figure 2 16a Figure 2 16b SECTION 3 3 0 MAIN I O INTERFACE PCB 093 0216 093 0568 093 0216 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 0216 s are supplied on all wall mount models while the 093 0568 is supplied only on the PM panel mount The most basic Controller requires only the I O PCB shown in Figure 3 1 for interfacing to field wiring The primary power supply is applied to terminals 9 amp 11 of TB2 This may be from 10 30 VDC WARNING HIGH VOLTAGES SUCH AS 115 VAC APPLIED TO THESE TERMINALS MAY 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 A1 A2 FAULT A3 amp HORN and power supply I O terminals JP1 allows the RS 485 ports to be configured for 2 or 4 wire operation A 26 pin ribbon cable connects the I O PCB to the CPU and Display nest assembly Two bus connectors allow addition of optional functions such
36. gure 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 covered by a dollop of RTV or similar material after completion of this procedure to avoid accidental over voltage conditions 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 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 it s Balance potentiometer for 4 volts at the test point Apply 5096 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 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 5096 LEL gas on the sensor Gain settings for each jumper po
37. he 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 instrument supervisory or training assistance should be obtained before use Factory assistance is available by calling 800 247 7257 O 2011 Scott Safety SCOTT the SCOTT SAFETY Logo Scott Health and Safety Model 7600 Model 7800 are registered and or unregistered marks of Scott Technologies Inc or its affiliat
38. isor Channel 6 alarm1 decimal 41036 3 n a decimal position devisor Channel 1 alarm2 real 41037 3 n a real w o decimal point Channel 2 alarm2 real 41038 3 n a real w o decimal point Channel 3 alarm2 real 41039 3 n a real w o decimal point Channel 4 alarm2 real 41040 3 n a real w o decimal point Channel 5 alarm2 real 41041 3 n a real w o decimal point Channel 6 alarm2 real 41042 3 n a real w o decimal point Channel 1 alarm2 decimal 41043 3 n a decimal position devisor Channel 2 alarm2 decimal 41044 3 n a decimal position devisor Channel 3 alarm2 decimal 41045 3 n a decimal position devisor Channel 4 alarm2 decimal 41046 3 n a decimal position devisor Channel 5 alarm2 decimal 41047 3 n a decimal position devisor Channel 6 alarm2 decimal 41048 3 n a decimal position devisor Channel 1 alarm3 real 41049 3 n a real w o decimal point Channel 2 alarm3 real 41050 3 n a real w o decimal point Channel 3 alarm3 real 41051 3 n a real w o decimal point Channel 4 alarm3 real 41052 3 n a real w o decimal point Channel 5 alarm3 real 41053 3 n a real w o decimal point Channel 6 alarm3 real 41054 3 n a real w o decimal point Channel 1 alarm3 decimal 41055 3 n a decimal position devisor Scott Safety 27 087 0018 Rev B Model 7600 Controller Users Manual Revision B Channel 2 alarm3 decimal Channel 3 alarm3 decimal Channel 4 alarm3 decimal Channel 5 alarm3 decimal Channel 6 alarm3 decimal Channel 1 fault real Channel 2 fault real Channel 3 fault real Channel
39. ly returns to the normal mode Itis very important to understand that CHANNEL INPUT DATA IS NOT PROCESSED DURING THE DIAGNOSTICS MODE It is AN possible to miss important input values while utilizing this mode and appropriate safeguards should be in place However the Diagnostics Mode can prove invaluable when testing I O since relays and analog outputs may be stimulated without driving inputs to precise levels Scott Safety 22 087 0018 Rev B Model 7600 Controller Users Manual Revision B LCD SYSTEM DIAGNOSTIC MODE MENU TREES MODES UP DOWN Press Alm Returns to Normal Mode EXIT ALM RESET LED DISPLAY TEST Sequences test pattern across LED alphanumeric display testing all segments ANALOG OUT BOARD Cycles 50 12mA outputs to each channel s output if Chl 1 50 OUTPUT equipped ANALOG IN BOARD Cycles channels and reads Chl 1 CNTS 1234 raw A D counts if equipped ALARM KDISCRETE Cam Cycles discrete alarm LED s amp EDIT TEST discrete relays if equipped COMMON RLY TEST Cycles common HORN ALARM ALARM 2 amp EDIT TEST FAULT relays ALARM LED TEST Cycles all discrete front panel alarm LED s without tripping EDIT TEST relays Figure 4 1 Scott Safety 23 087 0018 Rev B Model 7600 Controller Users Manual Revision B SECTION 5 5 0 MODBUS RS 485 PORTS The is equipped with Master COMM 1 and Slave COMM 2 modbus RTU ports Port configurations are described in sections 2 2 and 2 3
40. nnel s EXC IN LO terminals and simplifies field wiring Figure 3 4 shows typical wiring to 3 wire transmitters and Figure 3 5 for 2 wire transmitters In rare cases when a 4 wire transmitter s negative power terminal must be isolated from the negative signal terminal EXC is available for carrying the negative power For such applications remove SB3 and move SB to the A position AA ON amp ANALOG INPUT So d OPTIONAL se I2C BUS J2 TB1 TB2 Socketed 100 ohm termination resistors 1CH1EXC 2CHT1INLO 1 RMT PWR 3 CH1 EXC 4 CH1 IN HI 2 RMT EXC 5 CH2 EXC 6 CH2 IN LO SB1 A TB2 1 EXC 7 CH2 EXC 8 CH2 IN HI SB1 B TB2 1 IN LO 10CH3INLO 683 _ Chessis 11 CH3EXC 12CH3INHI 13 CH4 EXC 14 CH4 IN LO N c 15 CH4 EXC 16 CH4 IN HI O 19CH5EXC 20 CH5 IN HI TB1 21 6 22 CH6 INLO Q X 23CH6EXC 24 CH6 IN HI Figure 3 2 Scott Safety 14 087 0018 Rev B Scott Safety Model 7600 Controller Users Manual lt OA RY SONOS UN dC NE A SB3 SB1 Es k ANALOG INPUT BUS Salt WIRING DIAGRAM Figure 3 3 Typical 3 Wire Transmitter Wiring 24VDC Power 3 wire 4 20mA Supply transmitter 424V Sig 3 wire cable w shield Fieldwirng SSA Internal PCB traces O A Revision B EXC s IN LO s B SB1 SB3 Earth Figure 3 4 15 087 0018 Rev B Model 7600 C
41. of this manual Section 5 1 defines register locations of data available via the slave port Figure 5 1 shows how to wire multiple 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 Master Slave MAIN I O BOARD C9 09 ii 2 TB3 TES ALARM ALARM SPARE RESET RESET aal J4 J4 COMM1 COMM2 2 L COMMA COMM2 Es TX1 RX1 TX2 RX2 GO pisas TX RX1TX2 RX2 MAIN 1 O BOARD AUX RELAY ES 22 AUX RELAY 4 BOARD JP2 BOARD JP2 OPTIONAL U U OPTIONAL U U _ u2 04 Lua U4 2 T SOK U5 Terminators in sockets JP1 gt 2 AMP fom 2 4 6 168 com TB1 AUX 52 jcom2 E DOG
42. on After power up the controller will be in Normal mode or Alarm Priority mode depending upon how it was last powered down Configuration of system and channel variables requires entering the Set Up mode by pressing FUNCTION then EDIT A menu tree is provided for each of the 6 channels and another for system variables Select the tree to be entered by pressing the UP or DOWN buttons to scroll through C1 C2 C3 C4 C5 C6 SY and press EDIT to enter the desired tree 2 1 1 CHANGING VARIABLES USING THE KEYPAD Each menu contains one or more entries to be configured Some are simple YES NO or ON OFF entries that are toggled by pressing the EDIT key Others such as the Measurement Name and Engineering Units fields may have many different ASCII character possibilities EDIT is used to modify variables within any menu If the item has only limited entries it toggles each time EDIT is pressed If there are many possible entries EDIT begins a flashing cursor over the item and UP DN scrolls through each available entry FUNCTION moves the flashing cursor to the next position within a field EDIT discontinues the flashing cursor and loads that entry into non volatile memory 2 2 CHANNEL CONFIGURATION MENUS Figure 2 2 shows the menu tree for configuring all channel variables on the left side of the page These only affect the specific channel that has been selected The system menu tree is shown on the right side of the page and is described in section 2
43. only with same type and rating o Sy V ADJ els s sie s A O E SHOCK HAZARD RISK OF ELECTRICAL SHOCK DISCONNECT OR TURN OFF POWER BEFORE SERVICING THE EQUIPMENT 60 Watt 24 VDC Power Supply Option 10 0153 Figure 3 9 Scott Safety 21 087 0018 Rev B Model 7600 Controller Users Manual Revision B SECTION 4 4 0 SYSTEM DIAGNOSTICS The restores configuration data from non volatile memory each time power is applied During this several second long procedure the LCD operator interface flashes messages stating firmware revision and what options are connected These messages are useful indications of the status of options such as discrete relays analog outputs and others A System Diagnostic Mode may also be entered while power is applied This mode offers menus shown in Figure 4 1 for testing LED s relays and analog I O To enter this mode press and hold the EDIT key while simultaneously pressing the UPIDOWN keys A brief error code message appears Immediately press and hold the FUNCTION key until a DIAGNOSTIC MODE message appears on the top line of the LCD readout UP DOWN keys are used to move through the various testing procedures Pressing ALARM RESET at any time will return the to the normal monitoring mode With no keys pressed for 5 minutes the diagnostic mode times out and automatical
44. ontroller Users Manual Revision B Typical 2 Wire Transmitter Wiring 24VDC Power 2 wire 4 20mA Supply transmitter 24V Sig 2 wire cable w shield Field wiring _ L _ _ SENS Internal PCB traces O A B SB1 SB3 Earth Figure 3 5 3 2 OPTIONAL DISCRETE RELAY PCB 093 0217 An optional Discrete Relay PCB shown in Figure 3 5 adds six 5 amp form C relays per six channel alarm group Each PCB may be jumper configured to function for ALARM 1 ALARM 2 or ALARM 3 FAIL Alarm groups or zones may be created by connecting adjacent channels together using JP4 as shown This creates an OR function with selected channels causing any alarm included in the zone to actuate all relays Scott Safety 16 087 0018 Rev B Model 7600 Controller Users Manual Revision B TB2 is used to supply external 1 controls if discrete relays are tripped by 5VDC power to Alarm boards 1 A2 or See Chart when they are mounted gt 5 feet from the controller 12C ASSY 10 0196 6 CH DISCRETE RELAY 7 cables provide 5VDC but losses me hen occur with longer cable lengths from controler 1 5VDC ONLY WARNING Voltages exceeding p 5 6 volts may cause extensive O WIHGRELAVS 127 damage to entire controller _ 2 S13 A2 iz 2 S14 Sy TB2 S1 5 ILLEGAL 1 us d vid 8 J3 are interchangable I2C connectors used to add option Standard configuration has a 1 3 PCB assemblies to
45. s R FC W FC Channel 1 alarm1 12001 2 n a Channel 2 alarm1 12002 2 n a Channel 3 alarm1 12003 2 n a Channel 4 alarm1 12004 2 n a Channel 5 alarm1 12005 2 n a Channel 6 alarm1 12006 2 n a Channel 1 alarm2 12007 2 n a Channel 2 alarm2 12008 2 n a Channel 3 alarm2 12008 2 n a Channel 4 alarm2 12010 2 n a Channel 5 alarm2 12011 2 n a Channel 6 alarm2 12012 2 n a Channel 1 alarm3 12013 2 n a Channel 2 alarm3 12014 2 n a Channel 3 alarm3 12015 2 n a Channel 4 alarm3 12016 2 n a Channel 5 alarm3 12017 2 n a Channel 6 alarm3 12018 2 n a MDbFItPtMemRW 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 postion of 1 2 3 or 4 where 123 4 would return the value 10 Description Alias R FC W FC Channel 1 zero real 41001 3 n a Channel 2 zero real 41002 3 n a Channel 3 zero real 41003 3 n a Channel 4 zero real 41004 3 n a Channel 5 zero real 41005 3 n a Channel 6 zero real 41006 3 n a Channel 1 zero decimal 41007 3 n a Scott Safety 26 real w o decimal point real w o decimal point real w o decimal point real w o decimal point real w o decimal point real w o decimal point decimal 087 0018 Rev B position devisor Model 7600 Controller Users Manual Revision B Channel 2 zero decimal 41008 3 n a decimal position devisor Channel 3 zero decimal 41009 3 n a decimal position devisor Channel 4 zero decimal 41010 3 n a decimal
46. sition 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 s electronic Cal Mode feature described in section 2 2 1 Scott Safety 18 087 0018 Rev B 0010 1158 ASSY 10 0191 9 o CATBEAD 8 CH INPUT eS gt amp J1 JP9 sets for Ch s 1 8 or 9 16 T u q u1 d LEL LEL or installing modules Up to 4 10 0192 2 Dual CATBEAD P input modules may 8 be installed Disconnect power Ch 2 Ch 4 Ch 6 before removing m 8 56 5 100 ohm Res Sockets YOSNIS Av R C A are from Catalytic bead sensors 4 20mA may be applied to any channel s C amp A terminals by addition of 100 ohm resistor R1 R8 and setting LEL 4 20mA jumper to 4 20mA Model 7600 Controller Users Manual Revision B 10 0191 CO 4 2NDC TP CH B SENSOR VOLTS Y ADJUST LOW MED GAIN HIGH JUMPER BALANCE CH B ADJUST O 4 2VDC TP CH A SENSOR VOLTS O ADJUST CH s 2 4 6 8 10 12 14 or 16 gt LOW MED GAIN HIGH JUMPER CH A BALANCE 9 ADJUST X 10 0192 Dual Channel CATBEAD Modules plug into sockets on Main terminal board Not required for 4 20mA channels CH s 1 3 5 7 9 11 13 or 15
47. st be located external from the assembly on another mounting plate A 3 foot length of PC cable is also supplied for this purpose Weight is approximately 7 pounds Properly ground the enclosure and follow national and local electrical codes 10 60 9 10 9 60 gt 8 amp SIDE VIEW 5 22 O FRONT VIEW i UG amp 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 29 087 0018 Rev B Model 7600 Controller Users Manual Revision B 6 2 093 0282 NEMA 4X WALL MOUNT ENCLOSURE The N4 shown in Figure 6 2 is a fiberglass NEMA 4X wall mount enclosure Seven 6 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 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 SS 13 16
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