Related Manuals for Net Safety Net Safety AD-ST1400-25
Summary of Contents for Net Safety Net Safety AD-ST1400-25
- Page 1 MILLENNIUM Oxygen Gas Detector User Manual Models: MLP-A/AR/AD-ST1400-25 & (all available options) Part Number: MAN-0060 Rev 04 August 2008...
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Page 3: Warranty
Net Safety Monitoring Inc MPORTANT NFORMATION This manual is for informational purposes only. Although every effort has been made to ensure the correctness of the information, technical inaccuracies may occur and periodic changes may be made without notice. Net Safety Monitoring Inc., assumes no responsibility for any errors contained within this manual. -
Page 4: Table Of Contents
Net Safety Monitoring Inc ABLE OF ONTENTS Important Information Warranty Contact Information Introduction ..........1 The Product ... - Page 5 Net Safety Monitoring Inc Outputs ... 18 Relays - Optional ... 18 Modbus ... 18 Current ... 18 Step 7 — Maintain ........18 Periodic Response Check ...
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Page 6: Introduction
Net Safety Monitoring Inc. NTRODUCTION The Millennium series is Net Safety's latest innovation in a line of continuously evolving industrial gas detectors and sensors. The microcontroller based system provides fast, accurate and continuous monitoring of gases in extreme environments. RODUCT The Sensor The electrochemical sensor is a proven design ensuring an accurate and repeatable response within a detection range of 0 to 25% oxygen. -
Page 7: Step 1 - Plan
Net Safety Monitoring Inc STEP 1 — P OCATE ONTROLLER ENSOR Prior to the installation process, a location plan for placing the Controller and Sensor should be developed. Although there are no absolute rules for determining the quantity and location of a sensor or controller, the following points should be considered when planning the installation. -
Page 8: Step 2 - Install
Net Safety Monitoring Inc. Figure 2: Dimensional Drawings 5.60” (142.2 mm) 4.06” 5.31” (103.1 mm) (134.9 mm) 2.60” Controller with sensor (66.0 mm) 4.82” (122.4 mm) 9.92” (252.0 mm) Multi-purpose Junction Box with sensor MLP-A/AR/AD-ST1400-25 STEP 2 — I 5.68” (144.3 mm) NPACK Carefully remove all components from the packaging. -
Page 9: Mount
Net Safety Monitoring Inc Mount The Controller is usually mounted near eye-level and be easily accessible for calibration and maintenance purposes. The Sensor should be placed where O2 may build up or where other gases are likely to build up and displace O2. Ensure all devices are securely mounted, taking into consideration all requirements. -
Page 10: Board Assembly
Net Safety Monitoring Inc. Board Assembly There are three different fixed boards, two optional relay boards and an optional Modbus board which make up the PCB Assembly. Depending upon requirements, either a Electromechanical or Solid State Relay Board module can be used. Boards are field replaceable. Simply loosen the three locking standoffs, remove one board, insert the other board and tighten screws. -
Page 11: Sensor And Controller
Net Safety Monitoring Inc Figure 5: Wiring—Controller and Sensor Terminal Board +24V 4-20 Red+ Modbus RTU Terminals to PLC Shld Sensor Board Note: If the 4-20 mA signal is not used, connect a jumper between the 4-20 terminal and the COM terminal on the Terminal Board. MLP-A/AR/AD-ST1400-25 ENSOR AND ONTROLLER... -
Page 12: Sensor Separation
Net Safety Monitoring Inc ENSOR EPARATION — Figure 6: Wiring Sensor Separation Power Terminals* Modbus RTU Terminals to PLC* Sensor Terminals* As the Sensor must be located in one location and the Controller in a location where it can be easily reached, it is often necessary to “separate” the Controller and Sensor. -
Page 13: Non-Isolated/Isolated Wiring
Net Safety Monitoring Inc SOLATED SOLATED IRING Terminal Connection Figure 7: Non-isolated Terminal Connection Terminal Board Power Terminal Strip +24V 4-20 Figure 8: Isolated Terminal Connection Terminal Board Power Terminal Strip +24V 4-20 MLP-A/AR/AD-ST1400-25 Current Output To set an isolated current output, simply move the Jumper (shorting jack) to the isolated current position (refer to Figure 9, "Jumper Positions", on page 8). -
Page 14: Remote Reset
Net Safety Monitoring Inc EMOTE ESET The Millennium can be set for remote reset. A normally open Push Button Switch must be connected between the RST and the COM terminals on the Terminal Board and the Relay Option Latch Status must be set to Figure 10: Remote Reset +24V Terminal Board... -
Page 15: Step 4 - Operate
Net Safety Monitoring Inc. STEP 4 — O PERATE The Controller faceplate contains most functional elements of the user interface. Below is a description of that functionality. Figure 12: Controller Functionality Magnetic Reed Switch - provides non-intrusive access for programming, calibrating and resetting. -Place magnet against Housing (where indicated) for less than one second to initiate a basic system reset (clear a latched alarm) and make selections. -
Page 16: Table 2: Status Leds, Display Messages And Current Loop
Net Safety Monitoring Inc Table 2: Status LEDs, Display Messages and Current Loop Status LED State Current O/P RED or GREEN Options 3.0 mA Review/Settings Standard level of Blip/ 17.4 mA Oxygen present blink Slow Start-up delay (90 sec) 3.0 mA flash Access Main Menu 3.0 mA... -
Page 17: Magnetic Reed Switch
Net Safety Monitoring Inc Magnetic Reed Switch The Magnetic Reed Switch is provided to avoid opening the Housing in an environment where gas may be present. The Magnetic Reed Switch functions in the same manner as the Calibration Button but in a non-intrusive manner. Refer to Figure 12, "Controller Functionality", on page 10 for more information. -
Page 18: Step 5 - Calibrate
Net Safety Monitoring Inc. STEP 5 — C ALIBRATE ALIBRATION ROCEDURE WARNING: The calibration procedure requires about 5 minutes to complete. If gas is not applied at the appropriate time, a calibration failure may occur (refer to "Calibration Failure" on page 14 for specific information). For accurate performance, the concentration of gas, corresponding to 0 to 25% oxygen is converted to a linear 4 to 20 mA output signal which can be powered from the primary dc supply of the instrument. -
Page 19: Calibration Failure
Net Safety Monitoring Inc Calibration Failure If the calibration procedure fails, the display shows alternates Red and Green flashes and the analog output changes back and forth from 3.0 to 3.3 mA. The unit remains in a failed state until manually reset. After the Manual Reset, the unit will return to normal operation based on previous calibration values. -
Page 20: Relay Options
Net Safety Monitoring Inc. ELAY PTIONS Use to set the alarm level, coil status and latch status for the Low and High relays (Fault Alarm is fixed). The following table describes the default settings for the sensor. Table 4: Default Relay Settings Alarm Levels Millennium Model Number... -
Page 21: Modbus Options
Net Safety Monitoring Inc ODBUS PTIONS The digital RS-485 Modbus RTU protocol is used. There are two Modbus options: Node Address and Baud Rate. Node Address Each device connected to the chain must be assigned a unique node address (1- 255). -
Page 22: Select Display Language
Net Safety Monitoring Inc. ELECT ISPLAY ANGUAGE After the Restricted Menu the option Step 1: displays. Press the Calibration Button or use the Reed Switch YES? to select. The flashing confirms the selection. When the required language displays ( Step 2: press the Calibration Button or use the Reed Switch to select. -
Page 23: Outputs
Net Safety Monitoring Inc UTPUTS Relays - Optional Note: The fault relay output is not used to activate an automatic shutdown procedure. The fault output indicates a potential problem with the Controller not an alarm condition. Standard electro-mechanical relay outputs have Form C SPDT contacts rated 5 Amperes at 30 V dc/ 250 V ac. -
Page 24: How To Return Equipment
Net Safety Monitoring Inc OW TO ETURN QUIPMENT A Material Return Authorization number is required in order to return equipment. Please contact Net Safety Monitoring at (403) 219-0688 before returning equipment or consult our Service Department to possibly avoid returning equipment. If you are required to return equipment, include the following information: 1. -
Page 25: Rotate Pcb Assembly
Net Safety Monitoring Inc Rotate PCB Assembly 1. Remove the Controller’s Housing Cover. 2. Turn the power to the detector off. 3. Unscrew both the knobs marked "Pull Here". 4. Lift Controller faceplate from Housing and allow to hang from ribbon cable. -
Page 26: Appendix B: Resistance Table In Ohms
Net Safety Monitoring Inc. Appendix B: R ESISTANCE Distance (Feet) AWG #20 AWG #18 1.02 0.64 2.03 1.28 3.05 1.92 4.06 2.55 5.08 3.20 6.09 3.83 7.11 4.47 8.12 5.11 9.14 5.75 1000 10.20 6.39 1250 12.70 7.99 1500 15.20 9.58 1750 17.80... -
Page 27: Appendix C: Specifications
Net Safety Monitoring Inc. Appendix C: S PECIFICATIONS ENSOR PECIFICATIONS SENSOR ELEMENT Operating Temperature Range i t c t f i l a i Certifications ONTROLLER PECIFICATION Operating Temperature Range Power Consumption @ 24 V dc Nom 68 mA / 1.63 W Max 90 mA / 2.16 W Humidity Range Operating Voltage Range...