DETCON INCORPORATEDModel 440 Gas Detection/Alarm System Operator Instruction Manual January 27, 2005, Document # 2924, Rev # 1.0.2 Detcon Incorporated 3200 Research Forest Dr, The Woodlands, TX 77381 Phone 281.367.4100 • Fax 281.292.2860 Model 440 Operator Manual Rev. 1.0.2 ii .0 Warranty ................0 Troubleshooting Guide ..............................................................................................................7 Figure 6 Power Switch Configuration .........................0 System Features ..............................................................................19 Table of Figures Figure 1 System Operational Diagram ................................16 7................................................................................................................................0 Installation .............................2 iii ....................................................................................17 9...........................................................3 4...........................................2 Applying Power ..............................2 3.......................11 NOTE: If the range is changed....................................................................................................................................................................................2 Option for 4-20 mA Output(s) ....................................................................................................................9 5.......................................................10 6..... Peak and Event Data ...............................................10 6...............................16 8.......................................................................................................2 Downloading TWA...............................11 6..................................................................................................................................................................................1 Password Protection...0 System Operation........5 Figure 4 Mother Board Layout .........................................................................................................17 8......................12 Figure 10 Optional Plug-in Module.........................................9 5...................................................................................................................................................................................................................................................................................................0 System Configuration ...............................17 Model 440 Operator Manual Rev.............................................................................................................0 Description.............................................................................................................................................................................................11 Figure 9 Menu Flow Chart ...1 Power Switch Selections.......................................................13 7................................................................................9 Figure 7 Password Protection SW1 . the alarm levels will have to be reset!................1 Option for Battery Back-up Operation .4 User-Interface Menu Functions ...............................................1 2...............................................................................................4 5...................................................................................................17 8.......................................................................................................................................................................................................0............................................................................................................................0 Specifications................................17 8............................................10 Figure 8 Front Panel User Interface......0 Spare Parts ..................................................................................................................................2 Navigating the Menus...........................2 Figure 2 Mounting Diagram ..................4 Figure 3 Power Input Schematic....0 Options........................................... 1...........................................................................................................9 6..............................................1 Uploading New Set-up Configurations..............10 6...........................................................................................0 Start-up .....................................................................................................................Table of Contents 1.............................3 Optional Interface PCB for Remote Display ...............................................................................................................................................6 Figure 5 Control Board Layout..................................3 Main Display Functions..........................................18 10................................................16 7.....................................................................................18 11.... 2 iv .0.Model 440 Operator Manual Rev. 1. It also shows the current Alarm/Fault status via front panel LED indicators. Additional features include one-touch Alarm Reset and Alarm Silence (Acknowledge) functions. The low. high. which is purchased separately. Each control channel has three field programmable alarm relays and one fault relay. The remotely mounted gas sensor. The low. The controller may be configured using the straightforward User Interface Menus or it can be uploaded from a PC through the RS-232 serial communication port. giving the user a multitude of power options. Peak and Alarm Events.1. Peak readings. can include any Detcon 4-20 mA or RS-485 serial input device such as combustible gas. and highhigh alarms have individually field adjustable set points for each gas channel and include the provision to configure the alarm relays in a normally energized (failsafe) or normally de-energized mode of operation. The Model 440-N4X has a built-in power supply. The relays have two discrete form “C” contacts and are rated for 5 Amps at 30 VDC and 250 VAC. toxic gas. The PC serial port connection and external software can be used to download the recorded history for TWA. gas type. The system displays real time channel information on a backlit LCD. Model 440 Operator Manual Rev. or oxygen deficiency sensors. and has an optional one hour battery backup in the event of temporary power loss. the Detcon Model 440-N4X Gas Detection Alarm System has the capability to handle four 4-20 mA sensor inputs or four RS-485 serial sensor inputs. 1.0.0 Description Housed in a NEMA 4X weatherproof enclosure. It can be powered by either 115/230 VAC or 11.5 to 30 VDC. Configuration inputs are completely field programmable and include channel number.2 Page 1 of 19 . Standard features include recorded history of Time Weighted Average (TWA). high. and Alarm/Fault/Maintenance Events. high-high and fault alarm relays may also be configured for latching / non-latching and silencable / non-silencable operation. and gas concentration. thus triggering an external alarming device. Latching/Nonlatching and Silencable/Non-Silencable.2. The system displays current status information on its LCD display. SYSTEM OPERATION BLOCK DIAGRAM SCHEMATIC MODEL 440-N4X Gas Detection/Alarm System CH1 CH2 CH3 CH4 ALM 1 99 80 45 00 PPM PPM PPM PPM CL2 SO2 H2S NH3 FAULT ALM 2 ALM 3 RS-232 Port for Uploading Configuration and Downloading Historical Data PROG ↑ ↓ ENTER ALM 1 RELAY ALM 2 RELAY ALM 3 RELAY FAULT RELAY (2 Discrete Contacts each) Input Power 115/230 VAC 11. DCS or SCADA where it can be further monitored and logged. The RS-485 serial output can continuously transmit sensor and alarm data to a PC. fault and maintenance events. Using the front panel function key. As gas alarm or fault conditions clear.0 System Operation The Model 440-N4X can be configured for a combination of four 4-20 mA sensor input or four RS-485 serial sensor input. The information displayed during normal operation includes the gas channel #.485 Output to Master Device RS-485 Gas Sensor Inputs 4-20 mA Gas Sensor Inputs Figure 1 System Operational Diagram Model 440 Operator Manual Rev. the assigned relay outputs return to their normal states.5-30 VDC RS. 1. The Model 440-N4X gas detection alarm system has onboard data logging to record all alarm. Alarm values or fault condition can be field-programmed via the User Interface to cause an assigned relay output to fire. Relays can be set-up as Energized/DeEnergized. PLC.2 Page 2 of 19 . It also continuously logs the TWA and Peak readings which can be downloaded for external graphical review. the relay outputs can be Silenced or Reset. current reading and gas type.0. 5 A @ 250 VAC Sensor Inputs Accuracy Electrical Outputs RS-485 (Standard) RS-232 for Uploading/Downloading to PC (Standard) 4-20 mA (Optional) 115-230 VAC 11.5-30 VDC Maximum: 12 Watts @ 24 VDC Normal: 5 Watts @ 24 VDC (Total system power dependent on number of gas sensors & type of gas sensor connected) 1”x5” Backlit LCD NEMA 4X 10”W x 12”H x 6”D -40F to +167F -40C to +75C One year Power Input Power Consumption Display Electrical Classification Physical Dimensions Operating Temperature Range Warranty Model 440 Operator Manual Rev.0.0 Specifications Capacity 4 Input Channels Analog 4-20 mA or RS-485 Modbus RTU ± 1% Full Scale Range Qty 4 Relays: 2 Form C Contacts per relay Rated for 5 A @ 30 VDC.3.2 Page 3 of 19 . 1. 0.0 Installation 4. 1. Figure 2 Mounting Diagram 4. Mounting Holes 5/16 Dia. This connector style provides for quick disconnect convenience during replacement or servicing. Provide for suitable conduit/cable entries in the bottom of the enclosure. (Refer to Figure 5) Model 440 Operator Manual Rev.1 Mounting and Cable Penetrations Securely mount the Model 440 N4X enclosure per the mounting dimensions provided in Figure 2.4.) The connections for serial polling of gas sensors and RS-232 PC downloading activities are located at J7 on the Controller PCB.2 Page 4 of 19 .2 Power and I/O Connections Power and I/O connections are made on the Motherboard PCB. Plug-in male connector terminal blocks are provided for customer wire terminations. which is mounted on the back of the enclosure. Keep AC power separate from DC signals in conduit connections and runs. (Refer to Figure 4. This input can be used for primary power or back-up power in the event of a VAC power failure. SW1 J2 SW2 PS1 TO FROM VAC ON/OFF 115VAC/220VAC F2 SW4 VIN VDC + VDC - PS2 External VAC Input DC POWER SUPPLY J8 External VDC Input VSS VDC ON/OFF SW3 BATT1 MOTHER BOARD POWER INPUT VIN BATTERY ON/OFF BATT2 VIN SWOV BATTERY RESTORE Figure 3 Power Input Schematic 4.4. For a 3-wire gas sensor connect to the +.2. 4.0. –.5 – 30VDC to the terminals at J8. Refer to the Operators Manual for the gas sensor that is being connected.2. Model 440 Operator Manual Rev.3 Analog 4-20 mA Sensor Inputs Connect 4-20 mA type gas sensors to the motherboard at the terminals J15-J18. mA). labeled “CH 1” through “CH 4” in Figure 4. 1. These connections are labeled (+.1 AC Power Connect 115 or 230 VAC input wiring to the terminals at J2. For a 2-wire sensor connect to the + and mA terminations.2. labeled “DC IN” in Figure 3 & Figure 4. –. labeled “AC IN” in Figure 3 & Figure 4. connect 11.2 Page 5 of 19 .2 DC Power For optional DC power input. and mA terminations. PS1 SW2 SW3 VOLTAGE SELECT + PS2 BATTERY SW1 VAC POWER SWITCH SW0V EXTERNAL AC IN J2 SW4 VDC POWER SWITCH EXTERNAL DC IN J8 Battery Restore Switch Jumper for RS-485 Shield to Earth Grnd. JP1 Figure 4 Mother Board Layout Model 440 Operator Manual Rev.2 Page 6 of 19 .0. 1. 0.2 Page 7 of 19 . 1.Ribbon Cable to LCD ON OFF 1 2 3 4 Figure 5 Control Board Layout Model 440 Operator Manual Rev. Take the A and B wires and terminate on the Controller PCB at J7 the connector shown in Figure 5. Each relay has 2 Form C contacts. (5A @ 30VDC. They can be used to fire annunciating devices or as signal inputs to other control devices. 4. 1. Connect to the relay contact terminals of the Motherboard PCB. which allows the end-user more flexibility in the creation of their alarm system set-up. B.5 Serial Polling of the Model 440 Controller When polling this device serially. and ALARM 3 (Figure 4– J23-30). shielded twisted pair (Belden P/N 9841 is recommended). connect the incoming RS-485 wiring to the terminals labeled “RS-485 IN” (J10). There are two sets of terminals and they are both labeled as FAULT. If applicable. and S (Shield) for standard RS485 Modbus™ communication and are shown in Figure 4.2. NOTE: The RS-485 wiring should be a 2 conductor.2 Page 8 of 19 . For connection to the next polled device in the serial loop. NOTE: If VDC power for the Detcon Series 600 sensor is not available at the sensor location. A jumper on the Motherboard PCB (JP1) provides the option to leave the shield open or tied to earth ground. terminate the 3 conductors from the serial cable in the following manner.0. connect the RS-485 wiring to the terminals labeled “RS-485 OUT” (J31).4. 5A @ 250VAC) Model 440 Operator Manual Rev.6 Relay Outputs The standard Model 440 Controller provides four relays.2. ALARM 1. These terminals are labeled A. 4. the shield wire can be terminated on the Mother Board at JP1 the RS-485 jumper labeled ‘SHLD TO GND’ (Refer to Figure 4). The RS-485 wiring should be a 2 conductor. The connections are labeled C (common). Choose the appropriate selection for the application.2. These are double throw relays.4 Serial Input Gas Sensors When connecting serial input gas sensors such as the Detcon 600 Series. it can be provided via the + and – pins of channels 1-4 on the motherboard. shielded twisted pair (Belden P/N 9841 is recommended). ALARM 2. NO (normally open) and NC (normally closed). NOTE: The Ampere ratings of the relay contact should not be exceeded. 5.0 Star t-up NOTE: Before applying power. 5. locate the V-SELECT switch (SW2) and select the appropriate voltage setting. there is a switch to leave the battery connected or disconnected.1 for details on the Battery Back-up Option. Verify that the Main Display LCD comes up displaying gas readings on the display. The battery will normally be connected. check and make sure that all the wiring connections and external devices are installed correctly. The switches are located on the Motherboard. then the VAC power switch should be turned to the ON position.1 Power Switch Selections Refer to Figure 6. the sensor should read 0 (zero) after a short warm-up period of 1-2 minutes. Model 440 Operator Manual Rev. shown in Figure 4 SW2 SW3 VOLTAGE SELECT + PS2 BATTERY SW1 VAC POWER SWITCH SW0V EXTERNAL AC IN J2 SW4 VDC POWER SWITCH EXTERNAL DC IN J8 Figure 6 Power Switch Configuration NOTE: The unit may have the internal battery back-up option. NOTE: Applying power with devices hooked up incorrectly may cause damage to the equipment. 1. turn the applicable power switches to the ON positions. If the unit will be powered by the end-user’s DC source (or by a solar-battery power source). With the AC or DC power source connected. See Section 8.2. For AC power. then the VDC power switch should be turned to ON and insure the VAC power switch is in the OFF position.5. If the unit will be powered by AC voltage only. NOTE: All alarm relays will be disengaged for the first 1-minute after power-up to provide for an adequate sensor warm-up time.2 Applying Power Connect power per Section 4.2 Page 9 of 19 . If the unit is to be powered by AC and DC sources simultaneously. Assuming there is no target gas in the area of the gas sensor. and insure the VDC power switch (SW4) is in the OFF position. If so. then both power switches should be in the ON position.0. the PROG key acts as an “Escape” key that moves backwards in the Menu flow chart. The menu text is displayed on the backlit LCD and is interfaced via the four function keys located below it. the PROG key enters into the Main Menu. ENTER and Reset/Ack Key: This key has a multiple-use purpose. “Down Arrow” Key: This key moves the user down the Main Menu flow chart. The only functionality provided for is the Main Display and use of the Reset and Acknowledge functions.2 Navigating the Menus The user-interface for configuring gas channels and alarms is very simple to use. With Switch 1 – 4 in the OFF position. (Figure 7 SW1. It is also used to change highlighted entries within menu selections in the upward direction.1 Password Protection RS-485 Input for Gas Sensor. and access the logged data. 6.6.2 Page 10 of 19 . These keys are labeled from left to right: PROG. ENTER. This is typically used to silence alarm annunciators. With reference to the Menu Flow Chart (See Figure 9) and the correct function key sequencing. PROG Key: From the Main Display. Once inside the Main Menu. part of Control Board SW1 pos 4 .Password Protect Switch J7 ON OFF 1 2 3 4 Figure 7 Password Protection SW1 Password protection is accomplished via a switch selection on the backside of the Controller PCB.0 System Configuration 6. once the end-user has assessed the alarm condition. Password Protection is turned off and there is complete access to the Menus. Model 440 Operator Manual Rev. It is also used to change highlighted entries within menu selections in the downward direction. The Enter Key is also used to execute the Reset and Acknowledge functions. In this mode there is no access to the Menus. make changes. the Controller will be in Password Protected mode. DOWN. The ENTER function is used to accept selections within all Menu screens.0. 1. UP. The ENTER key is a multiple-use key that also controls the Reset and Acknowledge relay functions. is easy to learn how to navigate the menus. The Acknowledge function will disengage any silencable relays that are in a currently active state. “Up Arrow” Key: This key moves the user up the Main Menu flow chart. The Reset function releases all latched relays if pressed after they have cleared the alarm/fault condition.) With Switch 1 position 4 in the ON position. 2 Page 11 of 19 . ALM 2 (amber).3 Main Display Functions The Main Display is a 1”x 5” backlit LCD which has 4 lines by 24 characters. If any channels are in CAL MODE. ALM 3 (red) and FAULT (blue). UserInterface menu activity is conducted via the 1”x5” LCD and the four function keys. The Menu Flow Chart is shown below in Figure 9and is navigated using the function keys described above.Figure 8 Front Panel User Interface NOTE: The controller automatically times out of Menu Mode and returns to the Main Display after 1 minute of inactivity. then they will display as “CH # = NO COMM”. The LED’s represent ALM 1 (green). NOTE: The LCD has a backlight that will automatically turn off after 30 seconds of inactivity. The LCD backlight will come on automatically as soon as any function key is pressed.0. Model 440 Operator Manual Rev. If any channels are not communicating with sensors set up as serial input sensors.4 User-Interface Menu Functions The User-Interface is conducted via the Model 440-N4X Front Plate shown above in Figure 8. There are 13 Main Menu entries and their functional descriptions are discussed below. 6. In normal operation “CH # = XX ppm GAS” will bw displayed. the “CH#” will change to “ALM”. If any gas channels are in Fault. they will display “CH # = IN FAULT”. 1. 6. If any channel is in any gas alarm condition. While in Menu Mode there are no updates to gas readings and hence no alarm will take place. This is a feature designed to save on power. There are also four LED indicators on the front panel that show alarm and fault relay status. they will display as “CH # = In Cal MODE”. S/NS ALM 3 . S/NS MAIN MENU: SET DATE & TIME SET DATE AND TIME MM/DD/YY MAIN MENU: SET MODBUS ADDRESS SET ADDRESS MODBUS KEY: Up Arrow Down Arrow Enter MAIN MENU: VIEW TWA & PEAK 01/02/04 1200 . E/DE.0.2 Page 12 of 19 .L/NL. E/DE. S/NS ALM 2 . 1. E/DE. E/DE. S/NS ALM 1 .L/NL.L/NL.Menu Flow Chart NORMAL OPERATION MAIN MENU: SET CAL MODE MAIN MENU: SET INPUT MODE SET CAL MODE ON/OFF SET INPUT MODE: Analog /Digital SET # OF CHANNELS X MAIN MENU: SET # OF CHANNELS MAIN MENU: SET CHANNEL RANGE SET CHANNEL RANGE CH1 … X MAIN MENU: SET CHANNEL TYPE SET CHANNEL TYPE CHX = XXXXXXX CH1 … X MAIN MENU: SET CHANNEL ALARMS SET CHANNEL ALARMS CHX = ##### ASC/DEC CH1 … X MAIN MENU: SET RELAY FUNCTIONS SET RELAY FUNCTIONS FLT .A1 ON HH:MM:SS PROG Figure 9 Menu Flow Chart Model 440 Operator Manual Rev.L/NL.1300 TWA #### PK ##### MAIN MENU: VIEW ALARM RECS ALM: MM/DD/YY CHX. X NOTE: If the range is changed. the end-user must set the serial addresses of the gas sensor inputs sequentially from 01 to XX according to the number of sensors being polled.0 mA signal input when they are being calibrated.4.4.4.2 Set Input Mode This menu entry allows the selection of either analog 4-20 mA sensor inputs or digital RS-485 Modbus sensor inputs. NOTE: the number of activated channels can be less than (but not greater than) the controller’s maximum input capacity. Use the up and down arrows to find the appropriate alpha numeric selection and then use the ENTER button to select it. This menu appears as: Set Channel Range: CH1 = XX. Model 440 Operator Manual Rev.3 Set # of Channels This menu entry allows the selection of the number of active channels.2 Page 13 of 19 . the Main Display will show each channel as “CH # = IN CAL”. 6. It should match the number of sensors you are hooking up to the controller. This is a toggle selection labeled as “analog” or “digital”. This is an alpha numeric string that should encompass the units of measure followed by the chemical formula. This is a toggle selection labeled as “ON” or “OFF”.1 Set Cal Mode This menu entry allows the end-user to engage or disengage CAL MODE. the user can perform calibration on the sensor without triggering any false alarms. This is a scrolling list from 1. The menu appears as: Set # of Channels: 1 6.4. The Cal Mode feature is not necessary for these sensor types because the CH # in calibration will read “IN CAL” while it is in process. Enter the character string as is is expected to be displayed on the Main Display. The controller will automatically time out of CAL MODE after 60 minutes.6. For example “ppm H2S” or “% LEL”. The menu appears as: Set Input Mode: Analog or Digital 6. 1.0.4 Set Channel Range This menu entry allows the selection of the Channel Range for each gas channel input.000 and covers all of the Detcon gas sensor range possibilities. With CAL MODE engaged.5 Set Channel Type This menu entry allows the selection of the Channel Type for each gas channel input.4. the alarm levels will have to be reset! 6.00 up to 10. While the controller is in CAL MODE. The menu appears as: Set Cal Mode: ON or OFF NOTE: Some Detcon sensor models (Series 200/500/600) give a 2. If the selection for “digital” is made. then the alarm set points must be re-entered! 6.LATCHING/NON-LATCHING FLT . NOTE: If there is no intention of using a gas alarm relay. a setting of 0. SET RELAY FUNCTION: FLT . NOTE: If the channel range is changed.2 Page 14 of 19 .6 Set Channel Alarms This menu entry allows for the selection of the Channel Alarms for each gas channel input.NOTE: The character entry for a “space” is required and is available in the alphanumeric choices. These represent your alarm level set-points.ENERGIZED/NON-ENERGIZED ALM3 .ENERGIZED/NON-ENERGIZED ALM1 . ALM2.ENERGIZED/NON-ENERGIZED ALM2 .SILENCE/NO-SILENCE → → ALM1 . and silencable or non-silencable.ENERGIZED/NON-ENERGIZED FLT . NOTE: Any channels that are in alarm will display “ALM” instead of “CH#” on the Main Display.LATCHING/NON-LATCHING FLT .LATCHING/NON-LATCHING ALM3 .LATCHING/NON-LATCHING ALM2 . This unit has four relays. energized or deenergized.SILENCE/NO-SILENCE ALM2 . 1. All character positions must have an entry including “spaces” for unused characters at the end of the string. The menu guides the user through the required set-up for all the relay parameters shown in the order below. ALM2 and ALM3 and the fourth relay is used for the FAULT condition.4.SILENCE/NO-SILENCE ALM3 . Three relays are used for ALM1. The menu appears as shown below.SILENCE/NO-SILENCE → NOTE: It is generally recommended to set the FAULT relay as energized so that it will trip upon loss of power.LATCHING/NON-LATCHING ALM1 . This menu entry will also set whether the alarm should be ascending (right arrow) or descending (left arrow) by toggling.7 Set Relay Functions This menu entry is used to make your selection for relay function set-up.4. This is accomplished by toggling the selection entries. NOTE: The FAULT condition is assigned to the FAULT relay as a standard. This menu appears as: Set Channel Alarms: CH1 – ALM1 = X. The Main Display will show FAULT for any channel that is in FAULT.X Each gas channel has the capability to set up to 3 alarms (ALM1. and ALM3). All four relays must be set-up to account for the following 3 settings: latching or non-latching. Model 440 Operator Manual Rev. These set-points can be entered in 5% increments of the full-scale range that has been selected for that channel. This menu appears as: Set Channel Type: CH1 = (PPM_H2S___) 6.0.00 (zero) will make it inactive. It cannot be disengaged in the configuration of the controller. 4. time (09:00). Event type and Event status. This data can be viewed on the screen or can be downloaded via the RS232 port to a PC for graphical presentation.4.10 View TWA and Peak Readings This menu entry is used to view the recorded TWA and Peak readings for the different gas channels. Refer to Section 7. time. 05/05/04 09:00 0001 CH1 TWA XX PK XX This data is recorded every hour and formatted for display. record # (0001).2 Page 15 of 19 . record #. This data can be viewed on the screen or can be downloaded via the RS-232 port to a PC for graphical presentation.11 View Event Records This menu entry is used to view the recorded and saved Alarm. CH#.6. 6.8 Set Date and Time This menu entry allows for the correct entry of the current date and time.2 on instruction for using the downloading software provided with this controller.2 on instruction for using the downloading software provided with this controller. This should be set in hexadecimal format. 1. CH#. Set Modbus Address: 01 6. All events will be logged with their start and stop times in the order that they occur. TWA and Peak reading as shown above. Model 440 Operator Manual Rev.9 Set Modbus Address: This menu entry allows for the setting of the serial address of this controller when it is to be polled by another master device via RS485 Modbus RTU. The menu appears as: Set Date and Time: 01/26/04_14:56:07 6.4. Fault and Maintenance records for the different gas channels. It will report the date (05/05/04). 05/06/04 09:00 0000 CH1 ALM1 ON The data is formatted for display. It will report the date. Refer to Section 7.0.4. The downloaded data can be exported into a Microsoft Excel spreadsheet for graphing purposes. Directions for use of this custom software are located in the jacket of the disk and are also available in the Help Menu file. It is supplied along with the software disk. there is a separate PC program that can be used. Peak and Event Data The same PC program can also used to download the recorded history of TWA readings.2 Page 16 of 19 .1 Uploading New Set-up Configurations For uploading the gas channel configuration set-up information.7 . Model 440 Operator Manual Rev. The RS-232 port is used for this feature. and Event Records. Directions for use of this custom software are located in the jacket of the disk and are also available in the Help Menu file. 0 S y s t e m Fe a t u r e s The Model 440-N4X Gas Detection Alarm System has very capable features in the area of data logging and event reporting. This data can be viewed on the screen via scrolling or can be downloaded to an external PC using our custom software. Continuous data for TWA and Peak readings are stored at 1 hour increments in permanent memory for retrieval. Directions for use of this custom software are located in the jacket of the disk and are also available in the Help Menu file. The duration of the recorded storage is 1 month for the TWA readings. Peak Readings and Event Records. 7.2 Downloading TWA. The set-up information can be entered via this step-by-step program and then can be saved for future reference if there is ever a need to re-configure. Peak readings. 7. The downloaded data can be exported into a Microsoft Excel spreadsheet for graphing purposes.0. All Event Records are stored only as they occur. NOTE: There is a special RS-232 cable required for this feature. 1. This is for battery protection purposes.2 Option for 4-20 mA Output(s) An optional PCB that plugs into the controller board is available for 4-20 mA outputs. along with the requisite low voltage cut-off circuitry. The “-“ terminal should be used as a common ground. The batteries may be isolated during exchange or while in long-term storage by using the battery disconnect switch shown in Figure 4. There is a battery restore switch on the Motherboard PCB.8. The RS-485 terminal labeled as A. The battery back-up system consists of two 12 VDC / 0.0. 8. Match up the total number of 4-20 mA inputs and 4-20 mA outputs by CH # to achieve the correct indexing.2 Page 17 of 19 . It is not necessary if restored under AC power. 1.8 Amp-hour batteries in series. This PCB has four channels of 4-20 mA output. Connector Controller to 4-20 mA ZERO/SPAN Adjusts 1 4-20 mA RS-485 Inputs 2 3 4 - 4-20 mA RS-485 Output A B S Figure 10 Optional Plug-in Module 8.3 Optional Interface PCB for Remote Display The same PCB that provides the 4-20 mA output option is also used as the required interface for the Remote Display option. Model 440 Operator Manual Rev. B.1 Option for Battery Back-up Operation This option provides a nominal 1 hour of battery back-up power to the Gas Detection Alarm System. See Figure 10 for the correct installation and wire terminations of this feature. S will be used to connect to the Remote Display. The low voltage cut-off circuit is designed to disconnect the battery supply if the voltage is drained below 20 VDC. which must be pressed after the low voltage cut-off is triggered. See Figure 10 for the correct installation and wire terminations of this feature.0 Options 8. The actual Remote Display hardware is ordered separately as a Model 440-RD Read-Only-Remote display. This is only necessary if the unit is going to be restored under battery power. Alarms on constantly Alarm Firing causes unit to ‘LockUp’ → → Contact the Detcon Service Department for further troubleshooting assistance at 281-367-4100. Replace with external Power Supply if necessary. 1.2 Page 18 of 19 . 0 S p a r e Pa r t s 500-005076-001 500-005072-LCD 000-003606-000 500-005080-000 340-121200-000 360-BR2330 Motherboard PCB Controller Board PCB W/ LCD Display Replaceable Power Supply with cables 4-20mA output/RS-485 output PCB (Optional) 12 VDC Batteries (Optional) Date/Time Clock NICAD Battery Model 440 Operator Manual Rev.0. 1 0 . 0 Tr o u b l e s h o o t i n g G u i d e Problem Unit will not Power Up Potential Fix → Check for correct AC or DC voltage selection. → Insure that no channels are set to ascending or descending incorrectly.9 . Relays are not firing → Check that the alarm relays are configured properly Program Locks up or showing → Re-initialize unit. By pressing the Program Key for 3-5 erroneous information seconds during power-up recycle (Screen will display “Restoring Defaults) → Re-enter all Channel and alarm information. → Check for correct VAC and VDC powering configuration. → Check that Alarm Annunciators current draw does not exceed the on-board Power Supply limitations. 0. warrants under intended normal use each new Model 140-N4X controller to be free from defects in material and workmanship for a period of one year from the date of shipment to the original purchaser. Should the controller fail to perform in accordance with published specifications within the warranty period.. Inc. 1.. Inc. for necessary repairs or replacement. as the manufacturer. 0 Wa r r a n t y Detcon.2 Page 19 of 19 . Model 440 Operator Manual Rev. Texas.1 1 . return to Detcon. All warranties and service policies are FOB the Detcon facility located in The Woodlands.