GenII ProSafe Monitor OI-7420- Brochure

Model OI-74204x22 ProSafe________________________________________Operation ManualRevision 2.1w_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________Product OverviewThe Otis Instruments, Inc. GenII ProSafe 4x22 Model OI-7420 is a two channel gas monitor that functions as a transmission controller. The OI-7420 monitors toxic, combustible and oxygen gas levels in ambient air by receiving and displaying 4-20mA signals from up to two wired sensor assemblies.The OI-7420 features a 160x104 graphical LCD display and is equipped with four “dry contact” (Form C) 5 Amp alarm relays (with 4 Amp fuses) that are full-scale adjustable.The OI-7420 operates with either 12-35 Volts DC or 110/240 Volts AC power-in and includes a Modbus output with optional real-time monitoring software.The ability to display data and activate alarms in relation to readings sent from on-site sensors make the OI-7420 a truly phenomenal product in the safety realm of the gas industry. 2Table of ContentsProduct Overview.......................................................................................................................................2Introduction................................................................................................................................................ 5Complete System Diagrams...................................................................................................................... 6Front Panel.........................................................................................................................................................................6Terminal Board ..................................................................................................................................................................7Wiring Configurations...............................................................................................................................8DC Power-in (12-35 Volts DC)...........................................................................................................................................8AC Power Supply Connection..........................................................................................................................................10RS-485 Modbus Connection (Modbus Out)....................................................................................................................12Fault Indicator Connection............................................................................................................................................. 13Connecting Sensors..........................................................................................................................................................14Connecting Sensor 1................................................................................................................................................... 14Connecting Sensor 2................................................................................................................................................... 15Relay Configurations....................................................................................................................................................... 16Connecting Relay 1..................................................................................................................................................... 16Connecting Relay 2..................................................................................................................................................... 18Connecting Relay 3..................................................................................................................................................... 20Connecting Relay 4..................................................................................................................................................... 22Power On/Off............................................................................................................................................24Channel Setup (Channels 1-2).................................................................................................................25Entering Setup Mode....................................................................................................................................................... 25Channel Selection............................................................................................................................................................ 26Channel On/Off................................................................................................................................................................27Settings for Channels Designated as “On”.....................................................................................................................28Set Sensor Type................................................................................................................................................................ 28Set Scale............................................................................................................................................................................29Set # of Decimals (wired only)......................................................................................................................................... 30Individual Relay Setup..................................................................................................................................................... 31Relay On/Off............................................................................................................................................................... 31Relay Low/High...........................................................................................................................................................32Relay Value.................................................................................................................................................................. 33Relay Latching/Unlatching........................................................................................................................................ 34View System Information................................................................................................................................................. 36Exiting the Basic Configuration Menu........................................................................................................................... 37Advanced Configuration Menu (Global Settings).................................................................................38Entering Advanced Configuration Menu........................................................................................................................38Adjusting LCD Contrast...................................................................................................................................................39Restore Factory Default Settings.....................................................................................................................................40Fault Relay Setup: Relay 4 Fault Relay..........................................................................................................................41Fault Relay Setup: Latching or Unlatching....................................................................................................................42Fault Relay Setup: Relay Failsafe Setting...................................................................................................................... 43Fault Relay Setup: Fault Terminal Failsafe Setting...................................................................................................... 44Modbus Setup: Modbus Address..................................................................................................................................... 45Modbus Setup: Baud Setting........................................................................................................................................... 46Exiting the Advanced Configuration Menu.................................................................................................................... 47Calibration Mode..................................................................................................................................... 48Relay Test Mode................................................................................................................................................................51APPENDIX A: Additional Product Information...................................................................................53LED Indication Key (Alarms, Faults, and Power/Status).................................................................... 54OI-7420 Troubleshooting Guide..............................................................................................................55APPENDIX B: 4-20mA Loop Current Introduction............................................................................ 5634-20mA Current Loop Introduction................................................................................................................................ 57Overview........................................................................................................................................................................... 57Calculations......................................................................................................................................................................57Measuring Current...........................................................................................................................................................58APPENDIX C: Modbus Information..................................................................................................... 59Specifications............................................................................................................................................ 614IntroductionThis document is an Operation Manual containing diagrams and step-by-step instruction for proper operation of the Otis Instruments, Inc. GenII ProSafe 4x22 OI-7420. This document should be read before initial operation of the product. Should a question arise during the use of the product, this document will serve as a first reference for consultation. If further questions arise, or if the device is not working properly, please contact the sales representative of this product.5Complete System DiagramsThe following diagrams should be consulted for identification of Panels, Boards, and any other system part that may be referred to in this Operation Manual.Front Panel6Terminal Board 7Wiring ConfigurationsThe following Wiring Configurations must be completed before initial operation of the product.DC Power-in (12-35 Volts DC)NOTE: The unit will be wired for the power-type that is requested by the purchaser when shipped from Otis Instruments, Inc.? Provide a clean and stable 12-35 Volts DC voltage. Failure to to do so may cause the unit (and any wired sensors that are connected to the unit) to not operate properly. ? Voltage spikes higher than 35 Volts may damage the unit. ? Solar Panel power (with battery backup): This options may be used to power the unit, however, care must be taken to ensure the proper voltage and wattage is used. NOTE: The size that the solar panel should be (10, 30, 50, or 100 watts, for example) depends on several factors, including: geographical area, line-of-sight access to the sun, number of wired sensors connected, and weather conditions.Please consult a solar panel manufacture for specific details. Otis Instruments may also be contacted to provide guidance and recommendations. 8DC Power-in (12-35 Volts DC) cont...1. Open the enclosure box to expose the Front Panel.2. Unscrew the two thumb screws on the Front Panel.3. Open the Front Panel so that the Terminal Board is exposed (reverse of Front Panel).4. Locate the Power Terminal (on the lower right side of the Back Panel) and connect the DC-live wire (red) to the terminal marked “+12-35 VDC”.5. Connect the DC-ground wire (black) to the terminal marked “GND”.6. If desired, connect an Earth Ground wire (green) to the terminal marked “EGND” (required for surge suppression).7. Close the Front Panel.8. Screw in the thumb-screws.9. Close the enclosure box.10.Clamp down the enclosure latches.9AC Power Supply ConnectionFor AC Power applications, the Delta Power Supply (located inside the enclosure box) should be used.NOTE: The unit will be wired for the power-type that is requested by the purchaser when shipped from Otis Instruments, Inc.1. Open the enclosure box to expose the Front Panel.2. Unscrew the two thumb-screws on the Front Panel.3. Open the Front Panel so that the AC (Delta) Power Supply is exposed. 4. Connect a positive (red) wire to the Power Terminal terminal labeled “+12-35 VDC” on the Terminal Board.5. Connect the other end of that same positive (red) wire from the Terminal Board to the terminal labeled “+V” on the Delta power supply.10AC Power Supply Connection cont...6. Connect a negative (black) wire from the Power Terminal terminal labeled “GND” on the Terminal Board.7. Connect the other end of that same negative (black) wire from the Terminal Board to the terminal labeled “-V” on the Delta power supply.8. There will be three wires (black, white and green) pre-wired from the Delta power supply terminals “L” (AC Load IN), “N” (AC Neutral IN), and “EG” (Chassis GND or Earth GND). This set of wires will be used to plug into an AC power outlet ONCE ALL WIRING CONFIGURATIONS ARE COMPLETE.9. Close the Front Panel.10.Screw in the thumb-screws.11.Close the enclosure box.12.Clamp down the enclosure latches.11RS-485 Modbus Connection (Modbus Out)1. Open the enclosure box to expose the Front Panel.2. Unscrew the two thumb-screws on the Front Panel.3. Open the Front Panel so that the back of the Terminal Board is exposed.4. Locate the Modbus Out Terminal Block.5. Connect the yellow wire from a DB-9 connector (or the connector-type that best suits your application) to the terminal labeled “A” on the Control Screen Terminal Block.6. Connect the white wire from a DB-9 connector to the terminal labeled “GND” on the Control Screen Terminal Block.7.8. Connect the brown wire from a DB-9 connector to the terminal labeled “B” on the Control Screen Terminal Block. 9. Plug the DB-9 connector into a PLC.10.Close the Front Panel.11.Screw in the thumb-screws.12.Close the enclosure box.13.Clamp down the enclosure latches.12Fault Indicator ConnectionThe Fault terminal provides an output to power some form of Fault indicator. The Fault terminal uses the same supply voltage that is fed into the board, and is a DC only output. 1. Locate the Fault Terminal Block on the terminal board.2. Connect a positive (red) wire to the terminal labeled “+”.3. Connect a negative (black) wire to the terminal labeled “-”.13Connecting SensorsThe OI-7420 allows up to two wired (4-20mA) sensors to be monitored. Connecting Sensor 11. Locate the Sensor 1 Terminal Block on the Terminal Board.2. Connect the positive (red) wire to the terminal labeled “+VDC”.3. Connect the signal (green) wire to the terminal labeled “4-20mA”.4. Connect the neutral (black) wire to the terminal labeled “GND”.14Connecting Sensor 21. Locate the Sensor 2 Terminal Block on the Terminal Board.2. Connect the positive (red) wire to the terminal labeled “+VDC”.3. Connect the signal (green) wire to the terminal labeled “4-20mA”.4. Connect the neutral (black) wire to the terminal labeled “GND”.15Relay ConfigurationsThe OI-7420 offers four relays to be setup. Each of the four relays may be setup as Normally Open (NO) or Normally Closed (NC).Connecting Relay 11. Locate the Relay 1 Terminal Block on the Terminal Board.16Connecting Relay 1 cont...2. Connect the live wire (red) from the Relay 1 Alarm (light/horn) to the terminal labeled “NO” (or “NC”) on the Relay 1 Terminal Block.3. Connect the neutral wire (black) from the Relay 1 Alarm (light/horn) to the terminal labeled “GND” on the DC Power Supply Terminal Block.4. Connect the jumper wire (blue) from the terminal labeled “+12-35 VDC” on the DC Power Supply Terminal Block to the terminal labeled “COM” on the Relay 1 Terminal Block.17Connecting Relay 21. Locate the Relay 2 Terminal Block on the Terminal Board.18Connecting Relay 2 cont...2. Connect the live wire (red) from the Relay 2 Alarm (light/horn) to the terminal labeled “NO” (or “NC”) on the Relay 2 Terminal Block.3. Connect the neutral wire (black) from the Relay 2 Alarm (light/horn) to the terminal labeled “GND” on the DC Power Supply Terminal Block.4. Connect a jumper wire (blue) from the terminal labeled “COM” on the Relay 1 terminal block to the terminal labeled “COM” on the Relay 2 terminal block.19Connecting Relay 31. Locate the Relay 3 Terminal Block on the Terminal Board.20Connecting Relay 3 cont...2. Connect the live wire (red) from the Relay 3 Alarm (light/horn) to the terminal labeled “NO” (or “NC”) on the Relay 3 Terminal Block.3. Connect the neutral wire (black) from the Relay 3 Alarm (light/horn) to the terminal labeled “GND” on the DC Power Supply Terminal Block.4. Connect a jumper wire (blue) from the terminal labeled “COM” on the Relay 2 terminal block to the terminal labeled “COM” on the Relay 3 terminal block.21Connecting Relay 41. Locate the Relay 4 Terminal Block on the Terminal Board.22Connecting Relay 4 cont...2. Connect the live wire (red) from the Relay 4 Alarm (light/horn) to the terminal labeled “NO” (or “NC”) on the Relay 4 Terminal Block.3. Connect the neutral wire (black) from the Relay 4 Alarm (light/horn) to the terminal labeled “GND” on the DC Power Supply Terminal Block.4. Connect a jumper wire (blue) from the terminal labeled “COM” on the Relay 3 terminal block to the terminal labeled “COM” on the Relay 4 terminal block.23Power On/OffPowering on the device activates its functions. When powered on, the device is fully functional and access to system and settings menus is allowed.Once power is supplied to the OI-7420—by being plugged into an AC outlet or by being wired to a DC power supply—the display screen and LEDs will illuminate.To cycle the Terminal Board power, flip the Power Switch (located on the lower right side of the Terminal Board) to the OFF (switch right) and then ON (switch left) position.24Channel Setup (Channels 1-2)This feature is used to setup: Channel Selection, Channel On/Off, Sensor Type, Scale, # of Decimals, and Relay Setup (On/Off, Low/High, Value, Latching/Unlatching)—for each of the channels that the device is monitoring. System Information is also viewable in Setup Mode.NOTE: Each channel must be setup individually for each sensor.NOTE: To Exit Channel Setup at any time, press ESC.Entering Setup Mode1. Open the enclosure box.2. Press and hold MENU and ADD for 6 to 8 seconds to enter Setup Mode.25Channel Selection1. Once in Setup Mode, press ADD (increase) or SUB (decrease) to select the desired channel to be setup (1 or 2).NOTE: To view system information, press ADD (or SUB) until the “System Information” screen appears.2. Once the desire channel is selected press MENU (Next), then proceed to the next step.26Channel On/Off1. After the Channel Selection has been made, press ADD or SUB to change the state of the channel to On or Off.2. Once the desired setting is selected press MENU (Next), then proceed to the next step.NOTE: All channels must be setup as On/Off before the information screen is available. If the channel is set to “On”, additional settings will be available to set. If the channel is set to “Off”, there will be no additional settings available for that channel, and pressing MENU will allow the user to move to the next channel to be set to On/Off. Once both channels are set, press MENU once more to view System Information (see page 37).27Settings for Channels Designated as “On”The following settings will be available for channels that have been set to “On”.Set Sensor Type1. Press ADD or SUB to specify what the sensor will see. Options include: H2S, SO2, O2, CO, Cl2, CO2, LEL, VOC, FEET, HCl, NH3, H2, ClO2, HCN, F2, HF, CH2O, NO2, O3 or None.2. Press MENU (Next) to continue to the next menu option. 28Set Scale1. Press ADD (increase) or SUB (decrease) to manipulate the sensor's scale (1-65,000).2. Press MENU (Next) to continue to the next menu option. 29Set # of Decimals (wired only)1. Press ADD (increase) or SUB (decrease) to manipulate the display screen's number of decimals. The number of decimals available to be set will depend on the previously set scale.? 3 decimals: Scale 1 or less? 2 decimals: Scale 10 or less? 1 decimal: Scale 100 or less? 0 decimal: Scale greater than 100 (the Set # of Decimals option will not show up in this case)2. Press MENU (Next) to continue to the next menu option.30Individual Relay SetupNOTE: Repeat the Individual Relay Setup process for each relay—and each channel—to be setup.Relay On/Off1. Press ADD or SUB to manipulate the relay's On/Off status.2. Press MENU (Next) to continue to the next menu option.31Relay Low/High1. Press ADD or SUB to manipulate the relay's High/Low status.2. Press MENU (next) to continue to the next menu option.32Relay Value1. Press ADD (increase) or SUB (decrease) to manipulate the relay threshold value (1-65,000).2. Press MENU (Next) to continue to the next menu option.33Relay Latching/Unlatching1. Press ADD or SUB to manipulate the relay's Latching/Unlatching status.2. Press MENU (Next) to continue to the next option—setting up the next consecutive relay. 34Individual Relay Setup cont...Once all four relays have been setup, the display screen will show the following:3. Based on the specific application, choose one of the following steps to complete:? Press MENU (Next) to setup the next channel? Press ADD (Yes) to duplicate the settings to all consecutive channels—and ADD (Yes) again to confirm the operation? Continue to the next section, “Exiting the Basic Configuration Menu”35View System InformationAfter the second channel is set, press MENU to view the system's information, including the:? Build Date (Example: 01/01/2011)? Serial # (Example: F00001)? Unit Type: OI-7420? Version (Example: 3.0)? Build (Example: 1)36Exiting the Basic Configuration MenuComplete the following steps to exit the Basic Configuration Menu at any time.1. Press ESC to exit the Basic Configuration Menu.NOTE: After the fourth channel is set—and if MENU is pressed instead of ESC—there is an information-update on the display screen indicating the build date, serial #, unit type, version, and build of the OI-7420.2. Close the enclosure box.3. Clamp down the enclosure latches.NOTE: The monitor will automatically exit Chanel Setup after 15 minutes.CHANNEL SETUP MUST BE COMPLETED INDIVIDUALLY FOR EACH CHANNEL. REPEAT THE CHANNEL SETUP INSTRUCTIONS FOR EACH CHANNEL.37Advanced Configuration Menu (Global Settings)The Advanced Configuration Menu is used to manipulate global settings. To setup individual channels, use the Channel Configuration Menu.Entering Advanced Configuration Menu1. Open the enclosure box to expose the Front Panel.2. Cycle the unit's power (turn OFF, then ON). For instructions on how to cycle the unit's power, refer to the “Power On/Off” section of this manual (see page 25).3. When the Otis Logo is shown on the Display Screen, press MENU. 38Adjusting LCD Contrast1. Press ADD (increase) or SUB (decrease) to manipulate the LCD contrast.2. Press MENU to continue to the next Advanced Configuration Menu option.39Restore Factory Default SettingsPress ADD or SUB (Yes/No—as indicated on the display screen) to set the unit back to the factory's default settings. To leave the settings as they are, press MENU (Next). Factory settings are: • Channels 1-2 “On”• Relays set at “10, 15, 20 and 25”• All relays set to “Unlatching” / “High”• Baud set at 9600• Address set at 1• Gas Type set at H2S• Scale set at 100• # of Decimals set at 040Fault Relay Setup: Relay 4 Fault RelayPress ADD or SUB (Yes/No—as indicated on the display screen) to setup Relay 4 as the Fault Relay. To leave the setting as it is, press MENU (Next). NOTE: With this feature enabled, if any Fault occurs (on any channel) the Fault Relay is engaged. In addition, Relay 4 is removed from all setup options.41Fault Relay Setup: Latching or UnlatchingNOTE: This option will only appear if “Yes” is chosen on the previous option, setting Relay 4 as a Fault Relay.Press ADD or SUB (Yes/No—as indicated on the display screen) to set Relay 4 as Latching or Unlatching. To leave the setting as it is, press MENU (Next).42Fault Relay Setup: Relay Failsafe Setting1. Press ADD or SUB (Yes/No—as indicated on the display screen) to setup Relay 1 as failsafe (or not failsafe). To leave the setting as it is, press MENU (Next).2. Repeat the instructions in the previous step for Relays 2, 3, and 4.43Fault Relay Setup: Fault Terminal Failsafe SettingPress ADD or SUB (Yes/No—as indicated on the display screen) to setup the Fault terminal as failsafe (or not failsafe). To leave the setting as it is, press MENU (Next). 44Modbus Setup: Modbus Address2. Press ADD (increase) or SUB (decrease) to manipulate the global Modbus Address setting (between 1 and 247).3. Press MENU (Next) to continue to the next Advanced Configuration Menu option.45Modbus Setup: Baud Setting1. Press ADD (increase) or SUB (decrease) to manipulate the global Baud setting to: 4800, 9600, or 19200.NOTE: Baud default is 9600.2. Press MENU (Next) to exit the Advanced Configuration Menu and return to Normal Operating Mode.46Exiting the Advanced Configuration MenuComplete the following steps to exit the Advanced Configuration Menu at any time.1. Press ESC to exit the Advanced Configuration Menu.2. Close the enclosure box.3. Clamp down the enclosure latches.47Calibration ModeEntering Calibration Mode disables the relays and allows the sensors to be calibrated without triggering alarms. Once in Calibration Mode, the unit will remain in this state for two hours—unless RESET/ESC is pressed. 1. Open the enclosure box to expose the Front Panel.2. To enter Calibration Mode, press and hold MENU for five seconds. 48Calibration Mode cont...3. Once in Calibration Mode, the display screen will show “CAL” beside the “ALM” identifier. 49Calibration Mode cont...4. To return to Normal Operating Mode, press RESET/ESC.NOTE: If RESET/ESC is not pressed, the unit will remain in Calibration Mode for two hours.5. Close the enclosure box.6. Clamp down the enclosure latches.50Relay Test ModeRelay Test Mode activates each relay, and can be used to determine whether or not the relays and attached alarms are functioning properly. 1. Open the enclosure box to expose the Front Panel.2. To enter Relay Test Mode, press and hold RESET. 51Relay Test Mode cont...3. Relay 1 will activate after five seconds, Relay 2 will activate after an additional five seconds, etc.4. To return to Normal Operating Mode, continue holding—or release and press—RESET/ESC.5. Close the enclosure box.6. Clamp down the enclosure latches.52APPENDIX A: Additional Product Information53LED Indication Key (Alarms, Faults, and Power/Status)There are four red LEDs, one orange LED, and one tricolored LED (only blue and red will be used).LED Color / StatusDescriptionALARM 1 off no alarm condition has occurred on relay 1 since the last reset or power upsolid red an alarm condition is currently happening on relay 1blinking red an alarm condition has occurred on relay 1, but condition has now goneALARM 2 off no alarm condition has occurred on relay 2 since the last reset or power upsolid red an alarm condition is currently happening on relay 2blinking red an alarm condition has occurred on relay 2, but condition has now goneALARM 3 off no alarm condition has occurred on relay 3 since the last reset or power upsolid red an alarm condition is currently happening on relay 3blinking red an alarm condition has occurred on relay 3, but condition has now goneALARM 4 off no alarm condition has occurred on relay 4 since the last reset or power upsolid red an alarm condition is currently happening on relay 4blinking red an alarm condition has occurred on relay 4, but condition has now goneFault off no Fault condition has occurred on any sensor unit sense the last reset or power upsolid orange a Fault condition is currently happening on at least one sensor unitPOWER/STATUSred a Fault condition is occurring on the monitorblue Normal Operating Mode54OI-7420 Troubleshooting Guide• Fault 10Reason: The channel is setup, but no sensor is connectedSolution: Check that sensor is connected to the appropriate channelApplies to: Setups that use 4-20mA sensor assemblies• Fault 13Reason: A channel that has a sensor connected is properly setup, but there is a fault on the sensor unit itselfSolution: Check the sensor unit and take the appropriate action to correct the faultApplies to: Setups that use 4-20mA sensor assemblies55APPENDIX B: 4-20mA Loop Current Introduction564-20mA Current Loop IntroductionThis appendix in only an introduction. The information should serve as a brief overview of 4-20mA, and should not be considered a complete reference for proper implementation or use. Prior knowledge of industry standards pertaining to 4-20mA specifically, and other aspects of electronics, are assumed to be known by the technician. For proper connection to a monitor or PLC, refer to the manufacturer's specific Operation Manual or instructions for that particular piece of hardware.Overview4-20mA ("four to twenty”), is an analog electrical transmission standard used by Otis Instruments for some of its ambient gas sensors and monitors. The signal is a current loop where 4mA represents zero percent signal, and 20mA represents 100 percent signal (full scale of the sensor assembly). The relationship between the current loop and the gas value is linear.The 4mA allows the receiving monitor/PLC to distinguish between a zero signal, a broken wire, or a dead instrument. Benefits of 4-20mA convention are that it is: an industry standard, low-cost to implement, can reject some forms of electrical noise, and the signal does not change value around the “loop” (as apposed to a voltage). Only one current level can be present at any time; each device which operates via 4-20mA must to wired directly to the monitoring device. CalculationsI ?4-20?=? ?16·value ?scale ??4I ?4-20? : current of loop, measured in mA value : PPM or %, of gas concentration scale : full scale of sensor (see below for usual ranges)Table – Gas Sensor DetailsActual ranges may vary with our product. If unsure, confirm with the actual gas sensor assembly distributor, Otis Instruments sales representative, or call the main Otis Instruments office for more details.57Target Gas Range Temp.H2S = Hydrogen Sulphide 0-100 ppm -20 to 50CO2 = Oxygen 0-25 % -30 to 55CSO2 = Sulfur Dioxide 0-20 ppm -20 to 50CCL2 = Chlorine 0-10 ppm -20 to 50CH2 = Hydrogen 0-4 % -20 to 40CNH3 = Ammonia 0-100 ppm -40 to 40CCO = Carbon Monoxide 0-999 ppm -20 to 50CF2 = Florine 0-1 ppm -10 to 40CHF = Hydrogen Fluoride 0-10 ppm -10 to 40CH2S-2 = Hydrogen Sulphide 0-100 ppm -40 to 50C(extended temp)Measuring CurrentIf the value measured is 0mA, then: the loop wires are broken, the sensor assembly is not powered up, the sensor assembly is malfunctioning, or the monitor is malfunctioning. A DMM (digital multi meter) or Current Meter may be used to test a 4-20mA signal. Place the DMM or Current Meter in line with the loop and measure current. The DMM/Current Meter may be used in conjunction with the normal monitoring device.58APPENDIX C: Modbus Information59The complete OI-7420 Modbus Register Map may be downloaded from the “Service” section of our website (www.otisinstruments.com).Modbus TermsModbus: RTUSetting: Baud Rate = 9600Data Bits: 8Parity: NoneStop Bits: 1Time Out: 1000 msDevice Address: 1-247 Data Type: Holding RegistersStart Address: The first register the user would like to view (must be between 1-255)Length: Depends on the number of addresses the user would like to viewScan Rate:1000 msData Format: Hex, Decimal, Float60SpecificationsOperating Voltage: 12-35 VDC, 110/240 VACInput Signal: 4-20mAOutput (Internal Alarm Power): +12-35 VDC (Fault Indicator)RS-485 ModbusCurrent Draw: 250mA at 12 VDCChannels: TwoGases: All that are supported by the sensor assembliesDisplay: Graphical LCD (160x104), transflective, sunlight readable, LED backlightRelays: Four Dry Contact (5 Amp) w/ 4 Amp FusesProtection: Power EMI filter, surge suppression, 4-20mA and RS-485 surge suppression Enclosure: Stahlin fiberglass, clear windowEnclosure Dimensions: 8” x 8” x 4”Enclosure Mounting: Wall MountCertifications: NEMA 4 (enclosure only)Warranty: Hardware: One year (limited)61Warranty Statement for GenII ProSafe 4x22 OI-7420 HardwareOtis Instruments, Inc. (Manufacturer) warrants its products to be free of defects in workmanship and materials—under normal use and service—from the date of purchase from the manufacturer or from the product's authorized reseller. The hardware for this device is under a one year limited warranty.The manufacturer is not liable (under this warranty) if its testing and examination disclose that the alleged defect in the product does not exist or was caused by the purchaser's (or any third party's) misuse, neglect, or improper installation, testing or calibrations. Any unauthorized attempt to repair or modify the product, or any other cause of damage beyond the range of the intended use, including damage by fire, lightening, water damage or other hazard, voids liability of the manufacturer.In the event that a product should fail to perform up to manufacturer specifications during the applicable warranty period, contact the product's authorized reseller or return the product directly to the manufacturer with a Return Material Authorization (RMA). This number will be assigned upon contacting customer service at 979.776.7700 or Otis@otisinstruments.com. The manufacturer will--at its option and expense--repair or replace the product, or deliver an equivalent product or part to the purchaser at no additional charge.Any replaced or repaired product or part has either a 90-day warranty or the remainder of the initial warranty period (whichever is longer). 62Otis Instruments, Inc.Corporate Office2200 E. Villa Maria Dr.Bryan, TX 77802979.776.7700www.otisinstruments.com63 Product Overview Introduction Complete System Diagrams Front Panel Terminal Board Wiring Configurations DC Power-in (12-35 Volts DC) AC Power Supply Connection RS-485 Modbus Connection (Modbus Out) Fault Indicator Connection Connecting Sensors Connecting Sensor 1 Connecting Sensor 2 Relay Configurations Connecting Relay 1 Connecting Relay 2 Connecting Relay 3 Connecting Relay 4 Power On/Off Channel Setup (Channels 1-2) Entering Setup Mode Channel Selection Channel On/Off Settings for Channels Designated as “On” Set Sensor Type Set Scale Set # of Decimals (wired only) Individual Relay Setup Relay On/Off Relay Low/High Relay Value Relay Latching/Unlatching View System Information Exiting the Basic Configuration Menu Advanced Configuration Menu (Global Settings) Entering Advanced Configuration Menu Adjusting LCD Contrast Restore Factory Default Settings Fault Relay Setup: Relay 4 Fault Relay Fault Relay Setup: Latching or Unlatching Fault Relay Setup: Relay Failsafe Setting Fault Relay Setup: Fault Terminal Failsafe Setting Modbus Setup: Modbus Address Modbus Setup: Baud Setting Exiting the Advanced Configuration Menu Calibration Mode Relay Test Mode APPENDIX A: Additional Product Information LED Indication Key (Alarms, Faults, and Power/Status) OI-7420 Troubleshooting Guide APPENDIX B: 4-20mA Loop Current Introduction 4-20mA Current Loop Introduction Overview Calculations Measuring Current APPENDIX C: Modbus Information Specifications