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Sensor Electronics SEC3120 Instruction And Operation Manual

Dual-sensor display
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SEC3120 Transmitter
Dual-Sensor Display
Instruction and Operation Manual
P/N 1580281 Rev 10, 20150707
Sensor Electronics Corporation
12730 Creek View Ave
Savage, Minnesota 55378 USA
(952) 938 - 9486 Fax (952) 938 - 9617
www.sensorelectronics.com
Operator Manual
Page 1 of 40
P/N 1580281
SEC3120 Digital Transmitter
Sensor Electronics Corporation
Rev 10, 20150707

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  • Page 1 P/N 1580281 Rev 10, 20150707 Sensor Electronics Corporation 12730 Creek View Ave Savage, Minnesota 55378 USA (952) 938 - 9486 Fax (952) 938 - 9617 www.sensorelectronics.com Operator Manual Page 1 of 40 P/N 1580281 SEC3120 Digital Transmitter Sensor Electronics Corporation Rev 10, 20150707...
  • Page 2 Sensor Electronics Corporation Sensor Electronics Corporation (SEC) designs and manufactures innovative fixed system gas detection equipment, for combustible gases, oxygen, carbon dioxide and toxic gases. Commitment Our quality and service are uncompromising. We back each of our products with a two-year warranty on all materials and workmanship.

  • Page 3: Table Of Contents

    Formatting the Flash Card (Selected from the Initial / Top Menu, Page 2) ........ 35 Working With the SEC3500 HMI ....................35 APPENDIX A. Supplement – Certification Listed Data ................37 Operator Manual Page 3 of 40 P/N 1580281 SEC3120 Digital Transmitter Sensor Electronics Corporation Rev 10, 20150707...

  • Page 4: General Description

    1. GENERAL DESCRIPTION SEC3120 Dual-Sensor Display The SEC3120 Dual transmitter is designed to interface with two sensors and can be used with the SEC5000 IREvolution®, SEC Millenium®, SEC Signature® infrared gas sensors or SEC3000 and SEC3300 toxic gas detectors. The SEC3120 is a multi-microprocessor based intelligent transmitter continuously monitoring information from the gas sensor(s).
  • Page 5 4-20 mA (Source Type), max 1000 ohm load at 24 Vdc supply voltage. The 4-20 mA output is provided by the sensor and is passed through the SEC3120 display. The display can be located at any point in the sensor’s output loop. Consult the appropriate sensor manual for 4-20 installation requirements.

  • Page 6: Unit Installation

    CIRCUITS SONT SOUS TENSION Device Location: The first step in the installation process is to establish a mounting location for the SEC3120 transmitter and gas sensor(s). The most effective number and placement of sensors vary depending on the conditions of the application.
  • Page 7 Conduit: For hazardous location installations seals must be installed within 18 inches of conduit entries. The SEC3120 has three (3) ¾” NPT threaded ports for mounting and wiring the sensor(s) and transmitter into a permanent installation. Field wiring connections are made on the backside of the SEC3120 printed circuit board (PCB). For connection details refer to Figure 1.
  • Page 8 NC = NORMALLY CLOSED (4) BLACK NO = NORMALLY OPEN (DC COMMON) SENSOR ELECTRONICS CORPORATION Figure 1 12730 CREEK VIEW AVE BACK VIEW OF SEC3120 SAVAGE, MINNESOTA 55378 SEC3120 WIRING (T) 952.938.9486 (F) 952.938.9617 sales@sensorelectronics.com Operator Manual Page 8 of 40...

  • Page 9: User Interface

    5. USER INTERFACE User Inputs – Magnetic Switches: The SEC3120 has three (3) magnetic switch pickups on the Display PCB. The picture below shows the locations of the magnetic switches labeled UP, DOWN and ENTER. Placing a magnet in close proximity to one of the switches will cause the following operations to occur.

  • Page 10: Initial Startup

    NOTE: If your SEC3120 unit is set to operate two sensors in the ‘Identical’ Role and they are not identical in gas type, range or units, then the SEC3120 unit will display a fault and indicate that the Sensors Are Not Identical, and the fault relay on the SEC3120 unit will be engaged.

  • Page 11: Normal Operation

    The transmitter continuously checks for and displays system faults or initiation of calibration and automatically changes to the appropriate mode. The 4-20 mA output ports of the SEC3120 are non-isolated current source(s), passed through from the attached sensor(s). Their output values are defined by the associated sensor manual(s) (4 – 20 mA normal gas levels, less than (<) 4 mA indicates a status condition such as warm-up, calibration or a sensor fault).

  • Page 12: Setup - Configuring Operation

    10. Place the SEC3120 and its sensors ‘online’ by activating it on the RS485 Modbus network. 8.2. Date and Time Entering this menu will allow the operator to set the date, time and day of the week of the SEC3120 real time clock. From normal operation screens select ENTER to show the Initial/Top ID: XXX Menu Screen.
  • Page 13 HH * MM / SS (Minutes) PREVIOUS MENU DATE: MM / DD / YYYY (Seconds) * TIME: HH / MM * SS PREVIOUS MENU Operator Manual Page 13 of 40 P/N 1580281 SEC3120 Digital Transmitter Sensor Electronics Corporation Rev 10, 20150707...

  • Page 14: Relay Settings - Latching, Delay And Control Logic

    Setting Relay Latching and Delay Conditions – set individually for each alarm/fault relay Move the cursor to the desired alarm (LOW, MID, HIGH or FAULT) and select ENTER. HIGH FAULT Operator Manual Page 14 of 40 P/N 1580281 SEC3120 Digital Transmitter Sensor Electronics Corporation Rev 10, 20150707...
  • Page 15 Relay Menu. Logic: A key feature in the SEC3120 is the Sensor Role because only one set of relays is provided to service both attached sensors. Therefore, in determining the sensor mode, a decision regarding how the relays will be used must be considered and a decision concerning what relay mode is used must be made.
  • Page 16 This relay mode is commonly utilized in the Unique Sensor Role, and should be set PRIOR to setting the Unique Sensor Role. The fault relay will engage if EITHER sensor is reporting a fault condition, or if the SEC3120 unit is in a fault state.` Setting Relay Logic –...

  • Page 17: Sensor Mode - Single, Unique Or Identical

    The sensor mode in which the SEC3120 Digital Transmitter operates is chosen by the user and is a key decision that must be made before deploying or changing the sensing/monitoring plan. The choice will be determined by how many sensors are deployed, what gases are measured and how that data is captured.
  • Page 18 Screen. PREVIOUS MENU EJECT MEMORY CARD Scroll down to bring up Page 2 of the Initial/Top Menu ABORT WARMUP Screen. INFO MAIN MENU Operator Manual Page 18 of 40 P/N 1580281 SEC3120 Digital Transmitter Sensor Electronics Corporation Rev 10, 20150707...

  • Page 19: Alarm Settings - Threshold Values And Active Mode

    ENTER on ‘PREVIOUS MENU’ to return ‘value’ THRESHOLD to the Alarm Menu and choose to save or ACTIVE MODE HIGH/LOW * PREVIOUS MENU abort the changes. Operator Manual Page 19 of 40 P/N 1580281 SEC3120 Digital Transmitter Sensor Electronics Corporation Rev 10, 20150707...

  • Page 20: Network Id (Sensor / Display Network Identities)

    Network ID (Sensor / Display Network Identities) The SEC3120 may be addressed on Modbus at a specific network ID, as any other Modbus compliant device does. However, it may also be accessed using two network device IDs, one for each sensor if it is so configured.
  • Page 21 SET DATE TIME Menu Screen. PREVIOUS MENU EJECT MEMORY CARD Ready for next operation. ABORT WARMUP INFO MAIN MENU Set the Network and Zone IDs Operator Manual Page 21 of 40 P/N 1580281 SEC3120 Digital Transmitter Sensor Electronics Corporation Rev 10, 20150707...
  • Page 22 MENU to return to the Main Menu. PREVIOUS MENU * SAVE CHANGES ENTER on ‘SAVE CHANGES’ to return to the ABORT CHANGES Main Menu. Operator Manual Page 22 of 40 P/N 1580281 SEC3120 Digital Transmitter Sensor Electronics Corporation Rev 10, 20150707...

  • Page 23: Modbus Settings

    16-bit Modbus and every version of the SEC3500 HMI using its various proprietary protocols. (For more details, see the SEC3120 16-bit Modbus Technical Sheet, SEC P/N 1580282) Based on the Modbus register address and function code combinations provided in queries to the Transmitter by a Modbus Master, it is able to determine whether it is communicating with a standard Modbus device or an SEC3500 HMI and further distinguish which HMI protocol is appropriate.
  • Page 24 Activating ModBus Communication - Put the SEC3120 Unit Online or Offline EJECT MEMORY CARD Scroll down to MAIN MENU and select ENTER.
  • Page 25 STOP BITS DATA BITS and select ENTER, PARITY NONE BAUD RATE 9600 then using the UP/DN arrows to Operator Manual Page 25 of 40 P/N 1580281 SEC3120 Digital Transmitter Sensor Electronics Corporation Rev 10, 20150707...

  • Page 26: Sensor Calibration

    Main Menu Screen. 9. Sensor Calibration Calibration Menu (Selected from the Main Menu) ENTER to select the calibration menu. CALIBRATION ALARM RELAY NETWORK Operator Manual Page 26 of 40 P/N 1580281 SEC3120 Digital Transmitter Sensor Electronics Corporation Rev 10, 20150707...
  • Page 27 SENSOR ONE 1. RECORDING CAL DATA ZERO CAL. 1. COMPLETE DONE, STOPPING… SELECT SENSOR ONE/TWO Once complete the SEC3120 will return to the ZERO calibration menu. The sensor has been SPAN successfully zeroed if no faults are indicated. CAL. VAL 2.50...
  • Page 28 1. WAIT FOR START -ENT- TO ABORT SPAN CAL SENSOR ONE 1. IN PROGRESS -ENT- TO ABORT SPAN CAL SENSOR ONE 1. COMPLETE DONE, STOPPING… Operator Manual Page 28 of 40 P/N 1580281 SEC3120 Digital Transmitter Sensor Electronics Corporation Rev 10, 20150707...

  • Page 29: Diagnostic Functions

    RELAY NETWORK Diagnostic Functions The Diagnostics Menu will allow the operator to command the SEC3120 to reboot, toggle the LEDs (typically ‘Locator Mode’ with alternating flashing red/green alarm/fault lights), and toggle the individual relays on and off to verify operation.

  • Page 30: Selt-Test Menu (Selected From The Main Menu)

    Diagnostics Menu. Selt-Test Menu (Selected from the Main Menu) The self-test function will make the sensor generate a 4-20mA current into the SEC3120 from 4mA to 20mA (0-fullscale). In the self-test mode the SEC3120 outputs are fully functional. The SEC3120 will display the rising gas level, the 4-20 mA output will increase to 20 mA, the relays will activate and the RS485 information will be transmitted to the control system.

  • Page 31: Info Menu Contents

    SELF TEST for both sensor display updates. Once the unit reaches full scale the SEC3120 automatically returns to normal and the SELF TEST status will be removed from the display for that sensor.

  • Page 32: Data Logging (Optional)

    OK” to “MC-FULL”, warning the user to copy the contents off to a permanent storage location and reformat the card to start storage over. The SEC3120 will continue to log data to the flash card until it reaches 100% full. At that time, the status will change to “MC-FULLNOW” indicating that there is no more room to store data.
  • Page 33 Preamble,ID- Gas Value Float Alarm Low-Level Triggered Event Preamble, ID- Gas Value Float Change in Gas Level Event Preamble, ID- Gas Value Float Operator Manual Page 33 of 40 P/N 1580281 SEC3120 Digital Transmitter Sensor Electronics Corporation Rev 10, 20150707...
  • Page 34 (SSC,SEC)/SMT Either (Sensor Status Code, Sensor Error Code values) OR Sensor Fault Message Text Sensor Status Code (see sensor manual for code values) Operator Manual Page 34 of 40 P/N 1580281 SEC3120 Digital Transmitter Sensor Electronics Corporation Rev 10, 20150707...

  • Page 35: Formatting The Flash Card (Selected From The Initial / Top Menu

    “discovered” and online SEC3120, or  change the network ID of SEC3120 sensor two to a network ID that is not the next sequential value of sensor one, the SEC3120 device may cause the SEC3500 HMI to get caught in a constant loop attempting to communicate with both sensors, lose information about the SEC3120, or any other related corruption issue.
  • Page 36 Modbus Master;  If used in the initial deployment, then the Sensor Role for each SEC3120 must be decided and the correct Modbus Network ID mode defined so that if sequential network IDs are needed to support a dual sensor SEC3120, the assignment of network IDs is planned in advance. Take special care when mixing SEC3100 Digital Transmitters with SEC3120 Dual Digital Transmitters on the same Modbus Network to avoid overlap or potential future overlap as upgrades in the future may occur.

  • Page 37: Appendix A. Supplement - Certification Listed Data

    Supplement – Certification Listed Data APPENDIX A. Operator Manual Page 37 of 40 P/N 1580281 SEC3120 Digital Transmitter Sensor Electronics Corporation Rev 10, 20150707...
  • Page 38 Operator Manual Page 38 of 40 P/N 1580281 SEC3120 Digital Transmitter Sensor Electronics Corporation Rev 10, 20150707...
  • Page 39 Operator Manual Page 39 of 40 P/N 1580281 SEC3120 Digital Transmitter Sensor Electronics Corporation Rev 10, 20150707...
  • Page 40 Operator Manual Page 40 of 40 P/N 1580281 SEC3120 Digital Transmitter Sensor Electronics Corporation Rev 10, 20150707...

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