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Safe T net 210 - User Manual

1. TWNIWHL ONNOYS ANO ES o a INIA z dars YIMOd TWULNIN OVA z z aNnoUD lt GuVOd LINDYIO YATIONLNOD 0LZ LANL34VS 7 Ia z wma NOLING 13838 TNA E jao o O y as s 7 9 Ja Pin L S 4 a arms 6 7 o a pan 0 J p gt a J lt gt E TN ac e rang vuet PS 3 S1NALNO DOTENVIVNCIAINI z Yaonan zano sla a J J SI Le 5 201420 Ny MOT m L 3 iid Gran aA SLORLNOO 9 WEO CANTOS T oy on 6b ON 7 OWN WAVY MOT t o WOT pandadar bom VOL sLovinoo 9 HR CANTOS on aoua NEV IV HOIH l w EINNYHO Y WWW 01 SLOWLNOO Y WHO 5111081 jon LIH ONO VIV Hen Tom vw mo J diy 01 SLOVINOO V AROS UV 101 ZIH NOLLIINNOI TWOIdAL NOWOANNOO TYOKdAL Manna gz ON _J a oo 00 YALUNSNVAL JAIMZ MALLUWSNVELL JHM 301030 WAVY ez woo 7 Ear 2 SIOVINOO a GalVTOs 7 oy pom 398NOS YIMOd EE TNA U3ZZN8 TWWNYALXS Figure 2 2 Wiring Diagram Conduit Hubs Three 3 4 NPT conduit hubs provide routing for input and output wiring to the Safe T Net 210 P CAUTION Isolate analog signal wiring from AC power wiring 71 0012 Safe T Net 210 Operator s Manual A typical Safe T Net 210 wiring scheme is arranged as follows e The incoming AC wiring and the relay output wiring are routed through t
2. 6 Reconnect the ground lead in the same position 7 Plug the ribbon cable in to the new display circuit board 8 Reinstall the cover plate on the display module 9 Restart the Safe T Net 210 according to the ingructions in the Sart Up section of Chapter 2 38 71 0012 Maintenance Replacing the Power Supply 1 Make sure the AC power is turned off 2 Remove the six screws holding the controller module cover and remove the cover 3 Unplug the ribbon cable from the controller circuit board 4 Remove the four screws holding the mounting plate and tilt the top of the plate down and forward out of the housing 5 From the back of the mounting plate remove the two screws holding the power supply and remove the power supply 6 Disconnect the AC and DC wires from the old power supply 7 Connect the AC leads from the AC terminal block to the terminal strip of the new power supply as follows e Find the black lead that is connected to the L terminal of the AC terminal block and connect the free end to power supply terminal L e Find the white lead that is connected to the N terminal of the AC terminal block and connect the free end to power supply terminal N e Find the green lead that is connected to the large ground terminal on the mounting plate and connect the free end to the unlabeled terminal of the power supply 8 Connect the DC leads to the terminal strip of the new power supply as follows Find the red p
3. 0 eee eee 33 Interchangeability of Components 0 2 00 eee eee 33 Troubleshooting osre 26 55 ues cacy E N we Ser ARRE deed 33 Replacing Components 0000s eect enn ene 36 Appendix A Parts Last 221 ste A e Ed gE HE eed A NA 43 Appendix B SEPANSINIMETS lt 4 475 a al 45 71 0012 INTRODUCTION Description Safe T Net is a family of fixed instrument continuous monitoring systems The Safe T Net 210 is a two channel wall mounted controller module that receives analog gas measurement signals from one or two remote gas transmitters and displays the gas concentrations on two digital display screens In addition the Safe T Net 210 provides two analog outputs proportional to the gas measurement signals d YPE 210 GAS MONITOR Thermo SCIENTIFIC RESET IT Figure 1 1 Safe T Net 210 Two channel Controller When gas concentrations exceed pre programmed levels the Safe T Net 210 provides visible and audible signals as well as relay activation to indicate low and high gas alarms When instrument fault conditions occur the Safe T Net 210 provides visible and audible signals as well as relay closure The Safe T Net 210 can be configured for either 115 or 230 VAC power and in turn provides DC power to the remote transmitters including diffusion and sample draw transmitters The Safe T Net 210 can be connected to many Thermo Fisher Scient
4. 71 0085 71 0085 71 0085 71 0085 71 0085 71 0085 71 0085 71 0085 71 0085 Gas Transmitter Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Detection Range 0 to 100 ppm 0 to 1 ppm 0 to 500 ppm 0 to 10 ppm 0 to 2 ppm 0 to 1 ppm 0 to 10 ppm 0 to 30 ppm 0 to 50 ppm 0 to 10 ppm 0 to 100 ppm 0 to 100 ppm 0 to 20 ppm 0 to 30 VOL 0 to 1 ppm 0 to 1 ppm 0 to 20 ppm 0 to 20 ppm g xipueddy al o C LOULL Table B 4 Gas Type Methane Propane Hexane FX IR Transmitters for Safe T Net Controllers Part Number 67 0022 01 67 0022 02 67 0022 03 Manual Insert P N 71 0084 71 0084 71 0084 Gas Transmitter Diffusion type Diffusion type Diffusion type Detection Range 0 100 LEL 0 100 LEL 0 100 LEL enueyy S 10OJe19dO OLZ1EN 1 ales
5. AC fuse GMA2 250 Volts 2 Amp 115V system Ribbon cable AC line cord 3 conductor with reducer and cord grip Power supply 24 VDC 15W out 115 230 VAC in External buzzer Display circuit board Controller circuit board Operator s Manual Safe T Net 210 Safe T Net 210 two channel wall mounted controller 115 VAC Safe T Net 210 two channel wall mounted controller 230 VAC 43 Safe T Net 210 Operator s Manual 44 71 0012 Appendix B TRANSMITTERS Each transmitter includes an manual describing the 4 to 20 mA analog gas transmitters you ordered with your Safe T Net 210 gas monitoring controller A transmitter comes with the following The transmitter assembly including Amplifier Housing Detector e Transmitter Operator s Manual Various 4 to 20 mA analog gas transmitters are available from Thermo Fisher Scientific for diffusion or sample draw applications for most gases Diffusion transmitter part numbers have the 67 prefix and sample draw transmitter part numbers have the 68 prefix Tables B 1 thru B 4 lists the transmitters offered for the Safe T Net 210 71 0012 45 S o cL00 1Z Table B 1 Gas Type Ammonia NH3 Arsine AsH3 Carbon monoxide CO Chlorine Cl Chlorine dioxide C103 Combustible LEL Diborane B gt Hg Fluorine F gt Hydrogen chloride HCl Hydrogen cyanide HCN Part Number 67 0027 09 68 0020 09 67 0027 13 68 0020 13 67 0027 01 68 00
6. The table shows Thermo Fisher Scientific standard settings for alarm action and relay activation The Standard Range and Alarm Setpoint tables in each transmitter manual lists the standard low and high alarm setpoints for the transmitters supplied with your Safe T Net 210 You can adjust the relay action using the setup modes described in Chapter 2 Installation and Start Up 71 0012 25 Safe T Net 210 Operator s Manual Table 3 1 Audible and Visual Alarm Indications Condition Cause Visual Buzzer if Indication activated Normal Start up complete no gas Displays on None alarm or fault conditions Low Alarm Increasing reading at or LOW ALARM Pulsing above low alarm setpoint LED on Low Alarm Decreasing O reading at or LOW ALARM Pulsing Oxygen channel below low alarm setpoint LED on High Alarm Increasing reading at or HIGH ALARM Pulsing above high alarm setpoint LED on Fault Incomplete broken or FAULT LED Pulsing incorrect detector on gas reading amplifier or circuitry alternates with Below zero analog input FLt signal from transmitter Low Alarm When the displayed gas concentration passes the programmed low alarm setpoint s The LOW ALARM LED lights The buzzer pulses The low alarm relay activates If the alarm is set to trigger on a rising level the indications continue unless reset until the concentration decreases below the setpoint If the alarm is set totrigger on a falling level the i
7. 00 in 203 mm OD 31 in 8 mm x 50 in 13 mm slot Figure 2 1 Outline and Mounting Dimensions The Safe T Net 210 controller is suitable for mounting on a vertical surface using four screws through the mounting tabs on the corners of the housing 71 0012 Safe T Net 210 Operator s Manual UY CAUTION The Safe T Net 210 is suitable for installation in a non hazardous environment where general purpose equipment is used The Safe T Net 210 is not suitable for installation in Class I Division 1 or Division 2 areas 1 Consider the following factors when you select the mounting site The installation should be in a safe area preferably near an entrance door where the fire department or other emergency response team can see the indication if an alarm has caused the building to be evacuated AC power must be available e Provide room to open the housing door e Provide room to make wiring connections through the conduit hubs 2 Close and latch the housing door 3 Position the Safe T Net 210 on a vertical surface at eye level approximately 5 feet 1 5 m above the floor 4 Secure the housing to the vertical surface with one 1 4 inch screw through each mounting tab 71 0012 Installation and Start Up Wiring
8. 0012 Normal Operation and Alarms Fault Condition The fault alarm is activated when the 4 to 20 mA analog input from a transmitter falls below the 4 mA zero point to the programmed fault alarm setpoint This can be caused by such factors as a drifting sensor input or a broken wire connection When a fault alarm occurs the indications are as follows The FAULT LED lights The display alternates between the gas reading and FLt The buzzer and fault relay activate The fault relay is programmable to be latching or self resetting The fault relay is normally energized and de energizes in fault condition The fault alarm setpoint can be changed using the programming controls See the Fault Alarm Level section of Chapter 2 Installation and Start Up If a fault condition occurs 1 Make sure the wiring connections at the Safe T Net 210 terminal strip are correct and secure 2 See the Troubleshooting section in Chapter 5 Maintenance 71 0012 29 Safe T Net 210 Operator s Manual 30 71 0012 Chapter 4 CALIBRATION No calibration of the Safe T Net 210 controller is required Refer to the transmitter manual for instructions on setting the analog output signal from the transmitter Calibration Mode To avoid unwanted alarms during the calibration procedure either or both of the channels of the Safe T Net 210 can be placed in calibration mode In calibration mode the alarm LEDs and relays of the channel remai
9. ANY PERSON OR ENTITY OTHER THAN SELLER WITHOUT SELLER S PRIOR WRITTEN APPROVAL OR ANY USE OF REPLACEMENT PARTS NOT SUPPLIED BY SELLER SHALL IMMEDIATELY VOID AND CANCEL ALL WARRANTIES WITH RESPECT TO THE AFFECTED PRODUCTS THE OBLIGATIONS CREATED BY THIS WARRANTY STATEMENT TO REPAIR OR REPLACE A DEFECTIVE PRODUCT SHALL BE THE SOLE REMEDY OF BUYER IN THE EVENT OF A DEFECTIVE PRODUCT EXCEPT AS EXPRESSLY PROVIDED IN THIS WARRANTY STATEMENT SELLER DISCLAIMS ALL OTHER WARRANTIES WHETHER EXPRESS OR IMPLIED ORAL OR WRITTEN WITH RESPECT TO THE PRODUCTS INCLUDING WITHOUT LIMITATION ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE SELLER DOES NOT WARRANT THAT THE PRODUCTS ARE ERROR FREE OR WILL ACCOMPLISH ANY PARTICULAR RESULT Thermo Fisher Scientific TABLE OF CONTENTS Chapter 1 Introduction Deg e penan T Z E eee FG atures L a a N ned A CCESSOLIES aR ti LA T S EA R RR Soe R TT i Specifications 23 4 3 sees asia dee AEAEE ELE RATE Chapter 2 Installation and Start Up NOTIS K eit et cSt A MR ie Dal da WATS R i ep ee a eR RE Ee LR nan Programming ey lk ee dines a ee eds bas Su sad na oreo 13 Start UID are A AA A tn a 23 Chapter 3 Normal Operation and Alarms Normal Operation eesi tao oe AA R ER oe pa eee Monee gs 25 AV arm A ease ake Ses Sk es Ae ee cated etd eat O ig 25 Chapter 4 Calibration Calibration Mode S E e 22 ic 31 Chapter 5 Maintenance Routine Maintenance
10. from the controller circuit board and from the display module 4 Remove the four screws holding the mounting plate and tilt the top of the plate down and forward out of the housing This reveals the entire ribbon cable and the clips holding it in place Do not remove the old cable yet 5 Observe exactly how the old cable is installed including how the cable is folded and how the cable is fitted into the clips 6 Hold the new cable up to the old one and fold the new cable to match the folds in the old one 7 Remove the old cable from the clips and install the new one in its place 8 Plug the new ribbon cable in to the display module 9 Holding the ribbon cable connector out of the way position the mounting plate and fasten it to the housing using the four screws at the corners 10 Plug the new ribbon cable in to the controller circuit board 11 Reinstall the cover on the controller module 12 Restart the Safe T Net 210 according to the instructions in the Sart Up section of Chapter 2 Replacing the Display Circuit Board 1 Make sure the AC power is turned off 2 Unplug the ribbon cable from the display module 3 Remove the screws holding the cover plate on the display module and remove the cover plate 4 Remove the screws holding the display circuit board in place and remove the display circuit board 5 Hold the new display circuit board in position against the mounting blocks and fasten it in place using the screws
11. output signal T11 Common Channel 2 T10 Signal 4to20mA nalog T9 24 VDC input signal T8 Shield T7 Common Channel 1 T6 Signal 4to20mA nalog T5 24 VDC input signal T4 External RESET button T3 Ground chassis Power in T2 Common circuit ground T1 24 VDC 1 The fault relay is normally energized and de energizes in a fault condition such that contact closure occurs between C and NC in a fault condition 2 Can be factory configured to be normally closed and open on alarm 71 0012 Safe T Net 210 Operator s Manual Connecting the Transmitters The Safe T Net 210 controller can be used with any two standard 2 or 3 wire 4 to 20 mA analog transmitters See the transmitter manual for wiring instructions When changing transmitter types see the Programming section of this chapter for Safe T Net 210 programming instructions Connecting External Alarm Devices V CAUTION External alarms are controlled by the alarm relays The relays are rated for 10 Amps maximum Do not connect any device with a current load that exceeds the limit of the relay 1 Run the external alarm wires through the left conduit hub 2 Connect the external alarm wires to the controller module terminal strip as shown in Figure 2 2 Terminals 16 through 25 pertain to the channel 1 and channel 2 low and high gas alarm relays e Connect the positive or hot wire of the external power source to the C common terminal of the corresponding relay e Co
12. 085 71 0085 71 0085 71 0085 71 0085 71 0085 71 0085 71 0085 71 0085 Gas Transmitter Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Diffusion type Detection Range 0 to 100 ppm 0 to 1 ppm 0 to 500 ppm 0 to 10 ppm 0 to 2 ppm 0 100 LEL 0 to 1 ppm 0 to 10 ppm 0 to 30 ppm 0 to 50 ppm 0 to 10 ppm 0 to 100 ppm 0 to 100 ppm 0 to 20 ppm 0 to 30 VOL 0 to 1 ppm 0 to 1 ppm 0 to 20 ppm 0 to 20 ppm enueyy s 10 e19d0 OLZIEN 1 ales C LOU L Z 67 Table B 3 Gas Type Ammonia NH3 Arsine AsH3 Carbon monoxide CO Chlorine Cl Chlorine dioxide C10 Diborane B gt Hg Fluorine F3 Hydrogen chloride HCl Hydrogen cyanide HCN Hydrogen fluoride HF Hydrogen sulfide H3S Nitric oxide NO Nitrogen dioxide NO gt Oxygen O gt Ozone 03 Phosphine PH3 Silane SiHy Sulfur dioxide SO gt Part Number 67 0025 09 67 0025 13 67 0025 01 67 0025 04 67 0025 16 67 0025 18 67 0025 07 67 0025 05 67 0025 08 67 0025 06 67 0025 02 67 0025 14 67 0025 15 67 0025 03 67 0025 12 67 0025 10 67 0025 11 67 0025 17 FX SMTn Transmitters for Safe T Net Controllers Manual Insert P N 71 0085 71 0085 71 0085 71 0085 71 0085 71 0085 71 0085 71 0085 71 0085
13. 20 01 67 0027 04 68 0020 04 67 0027 16 68 0020 16 67 0007 68 0005 67 0027 18 68 0020 18 67 0027 07 68 0020 07 67 0027 05 68 0020 05 67 0027 08 68 0020 08 Standard Transmitters for Safe T Net Controllers Manual Insert P N 71 0090 71 0114 71 0090 71 0114 71 0090 71 0114 71 0090 71 0114 71 0090 71 0114 71 0024 71 0025 71 0090 71 0114 71 0090 71 0114 71 0090 71 0114 71 0090 71 0114 Gas Transmitter Diffusion type Sample draw Diffusion type Sample draw Diffusion type Sample draw Diffusion type Sample draw Diffusion type Sample draw Diffusion type Sample draw Diffusion type Sample draw Diffusion type Sample draw Diffusion type Sample draw Diffusion type Sample draw Detection Range 0 to 100 ppm 0 to 1 ppm 0 to 500 ppm 0 to 10 ppm 0 to 2 ppm 0 to 100 LEL 0 to 1 ppm 0 to 10 ppm 0 to 30 ppm 0 to 50 ppm enueyy s 10 e19d0 OLZIEN 1 ales C LOU L Z LV Table B 1 Gas Type Hydrogen fluoride HF Hydrogen sulfide HS Nitric oxide NO Nitrogen dioxide NO gt Oxygen Oz Ozone O3 Phosphine PH3 Silane SiH4 Sulfur dioxide SO gt Part Number 67 0027 06 68 0020 06 67 0027 02 68 0020 02 67 0027 14 68 0020 14 67 0027 15 68 0020 15 67 0027 03 68 0020 03 67 0027 12 68 0020 12 67 0027 10 68 0020 10 67 0027 11 68 0020 11 67 0027 17 68 0020 17 Manual Insert P N 71 0090 71 0114 71 00
14. 90 71 0114 71 0090 71 0114 71 0090 71 0114 71 0090 71 0114 71 0090 71 0114 71 0090 71 0114 71 0090 71 0114 71 0090 71 0114 Standard Transmitters for Safe T Net Controllers Continued Gas Transmitter Diffusion type Sample draw Diffusion type Sample draw Diffusion type Sample draw Diffusion type Sample draw Diffusion type Sample draw Diffusion type Sample draw Diffusion type Sample draw Diffusion type Sample draw Diffusion type Sample draw Detection Range 0 to 10 ppm 0 to 100 ppm 0 to 100 ppm 0 to 20 ppm 0 to 30 VOL 0 to 1 ppm 0 to 1 ppm 0 to 20 ppm 0 to 20 ppm g xipueddy S 00 C LOULL Table B 2 FX SMT Transmitters for Safe T Net Controllers Gas Type Ammonia NH3 Arsine AsH3 Carbon monoxide CO Chlorine Cl Chlorine dioxide C103 Combustible LEL Diborane B gt Hg Fluorine F3 Hydrogen chloride HCl Hydrogen cyanide HCN Hydrogen fluoride HF Hydrogen sulfide HS Nitric oxide NO Nitrogen dioxide NO2 Oxygen 041 Ozone O3 Phosphine PH3 Silane SiH4 Sulfur dioxide SO gt Part Number 67 0024 09 67 0024 13 67 0024 01 67 0024 04 67 0024 16 67 0021 01 67 0024 18 67 0024 07 67 0024 05 67 0024 08 67 0024 06 67 0024 02 67 0024 14 67 0024 15 67 0024 03 67 0024 12 67 0024 10 67 0024 11 67 0024 17 Manual Insert P N 71 0085 71 0085 71 0085 71 0085 71 0085 71 0085 71 0085 71 0085 71 0085 71 0085 71 0
15. ERNING START UP OPERATION CALIBRATION AND MAINTENANCE BE READ UNDERSTOOD AND FOLLOWED NOTATION CONVENTIONS Notices are used in this operator s manual to alert you to hazardous condi tions to person or instrument and to notify you of additional information This operator s manual uses the following notices sy WARNING Notifies you of potential danger that can result in personal injury or death CX VV CAUTION Notifies you of potential damage to equipment YY NOTE Notifies you of additional or critical information SERVICE LOCATIONS For additional assistance Environmental Instruments Division has service available from exclusive distributors worldwide Contact one of the phone numbers below for product support and technical information or visit us on the web at www thermo com aqi 1 866 282 0430 Toll Free 1 508 520 0430 International Thermo Fisher Scientific Warranty Seller warrants that the Products will operate or perform substantially in conformance with Seller s published specifications and be free from defects in material and workmanship when subjected to normal proper and intended usage by properly trained personnel for the period of time set forth in the product documentation published specifications or package inserts Ifa period of time is not specified in Seller s product documentation published specifications or package inserts the warranty period shall be one 1 year from the date of shipm
16. Safe T Net 210 Instruction Manual Part Number 71 0012 31Mar2010 2007 Thermo Fisher Scientific Inc All rights reserved Specifications terms and pricing are subject to change Not all products are available in all countries Please consult your local sales representative for details Thermo Fisher Scientific Air Quality Instruments 27 Forge Parkway Franklin MA 02038 1 508 520 0430 www thermo com aqi Thermo Fisher Scientific WEEE Compliance This product is required to comply with the European Union s Waste Electrical amp Electronic Equipment WEEE Directive 2002 96 EC It is marked with the following symbol Thermo Fisher Scientific has contracted with one or more recycling disposal companies in each EU Member State and this product should be disposed of or recycled through them Further information on Thermo Fisher Scientific s compliance with these Directives the recyclers in your country and information on Thermo Fisher Scientific products which may assist the detection of substances subject to the RoHS Directive are available at www thermo com WEEERoHS WEEE Compliance WARNING Ss THIS INSTRUMENT IS DESIGNED TO DETECT ONE OR MORE OF THE FOLLOWING FLAMMABLE VAPORS OXYGEN CONTENT AND OR TOXIC GAS AND TO GIVE WARNING BEFORE THEY REACH HARMFUL CONDITIONS IN ORDER TO ENSURE THAT IT WILL WARN OF DANGEROUS CONCENTRATIONS IT IS ESSENTIAL THAT THE INSTRUCTIONS IN THIS MANUAL PARTICULARLY THOSE CONC
17. The channel 2 display and LOW Alarm LED flash Channel 2 low alarm level can now be set using the A UP and Y DOWN buttons 71 0012 19 Safe T Net 210 Operator s Manual 11 Press the STEP button to accept the desired value and go to the next setting 12 The channel 2 display and HIGH ALARM LED flash Channel 2 high alarm level can now be set using the A UP and Y DOWN buttons 13 Return U1 switch 1 to OFF to resume normal operation SET UP MODE 2 GAS UNITS AND DECIMAL PLACE Set up mode 2 is used to set the following parameters individually for channel and channel 2 e Channel 1 decimal place e Channel 1 indicated gas units PPM LEL VOL e Channel 2 decimal place e Channel 2 indicated gas units PPM LEL VOL You can exit set up mode 2 by setting switch 2 to OFF at any point during the procedure without losing your settings In addition decimal place and gas unit settings are retained by the Safe T Net 210 even when power is removed While the Safe T Net 210 is in set up mode 2 both 4 to 20 mA analog outputs go to 1 5 mA 1 Initiate set up mode 2 by placing U1 switch 2 in the ON position away from the edge of the board 2 The channel 1 display flashes showing full scale range The channel 1 decimal place can now be set using the A UP and Y DOWN buttons 3 Press the STEP button to accept the desired value and go to the next setting 4 The channel 1 display hows only the decimalpoint chosen the
18. U9 U10 and three buttons STEP A UP and W DOWN located at the edge of the controller module circuit board On the DIP switches ON is the switch position to the right away from the edge of the board and OFF is to the left toward the edge of the board YY NOTE While the Safe T Net 210 is in any of its set up modes the 4 to20 mA analog output signals fall to 1 5 mA Co l N Ch Co Uuuu vunu On UOU SSEBO0RRRE LHHHH HHH Control buttons DIP switches Figure 2 5 Controller Board Switches and Programming Buttons 71 0012 15 Safe T Net 210 Operator s Manual DIP SWITCH U1 COMMON SETTINGS Ul is the DIP switch closest to the top of the module adjacent to the control buttons The switches of U1 control the settings common to both channels Table 2 3 DIP switch U1 Settings Common to Both Channels Switch Position Function 1 top ON Enable set up mode 1 for both channels See Set up Mode 1 in this chapter OFF Normal operation 2 ON Enable set up mode 2 for both channels See Set up Mode 2 in this chapter OFF Normal operation 3 ON Enable set up mode 3 for both channels See Set up Mode 3 in this chapter OFF Normal operation 4 ON Select channel 1 set up mode 3 OFF Select channel 2 set up mode 3 5 ON Fault relay latched OFF Fault relay unlatched self resetting 6 Switches 6 and 7 are used together to set the fault al
19. arm setpoint 7 See Fault Alarm Setpoint in this chapter 8 ON Enable alarm buzzer bottom OFF Disable alarm buzzer 16 71 0012 Installation and Start Up DIP SWITCH U9 CHANNEL 1 RELAYS U9 is the middle of the three DIP switches The switches of U9 control the operation of the channel 1 low and high relays Switch 7 turns channel 1 on and off Table 2 4 DIP switch U9 Channel 1 Settings Switch Position 1 top ON OFF 2 ON OFF 3 ON OFF 4 ON OFF 5 ON OFF 6 ON OFF 7 ON OFF 8 bottom OFF Function Channel 1 low relay latched Channel 1 low relay unlatched self resetting Channel 1 low relay normally de energized Channel 1 low relay normally energized Channel 1 low relay activated on falling level Channel 1 low relay activated on rising level Channel 1 high relay latched Channel 1 high relay unlatched self resetting Channel 1 high relay normally de energized Channel 1 high relay normally energized Channel 1 high relay activated on falling level Channel 1 high relay activated on rising level Channel 1 OFF Channel 1 ON Must be set to OFF only 1 When channel 1 is off the display shows OFF the status LEDs HIGH ALARM LOW ALARM and FAULT are off the relays are held in the inactive state the analog output is 0 mA and the channel cannot be placed in calibration mode 71 0012 17 Safe T Net 210 Operator s Manual DIP SWITCH U10 CHANNEL 2 RELAYS U10 is the bottom DIP swi
20. aulty ribbon cable or connections Faulty connections Display module malfunction Make sure that the transmitter wiring to the Safe T Net 210 is properly shielded See the Transmitter manual Increase the alarm delay setting using the set up procedures described in Chapter 2 Installation and Start Up If the alarm difficulties continue contact Thermo Fisher Scientific for further instructions Turn off calibrate mode as described in Chapter 4 Calibration Enable the buzzer See the DIP switch U1 section of Chapter 2 Installation and Start Up Check the buzzer plug in connection on the controller circuit board 4 Check that the screw connections on the buzzer are secure If the buzzer continues to fail contact Thermo Fisher Scientific for further instruction 1 Replace the ribbon cable 2 Replace the display module Contact Thermo Fisher Scientific for further instruction agoueuejuleyy Safe T Net 210 Operator s Manual Replacing Components This section describes the procedures for replacing components of the Safe T Net 210 including fuses ribbon cable display module power supply controller circuit board buzzer and RESET button Power supply Ribbon cable Mounting plate Ribbon cable Display module Controller module DC fuse Calibrate button Gr ound AC fuse AC terminal Controller module terminal block termina
21. controller module circuit board you can set the following parameters for each channel e Channel settings Range Decimal place Indicated gas units PPM LEL VOL Low and high alarm levels e Gas alarm relays Latching or self resetting Normally energized or de energized Activated on rising or falling level e Fault alarm Activation level Relay latching or self resetting e Alarm buzzer enabled or disabled e Calibration time out e Alarm delay 71 0012 13 Safe T Net 210 Operator s Manual Standard Settings Table 2 2 Low Alarm High Alarm Fault Alarm Alarm Delay Calibration time out Buzzer Standard Factory Settings Form C Normally de energized Latching O alarms are self resetting Activated on a rising concentration O low alarm is activated on a falling concentration Form A Normally de energized Latching O alarms are self resetting Activated on a rising concentration Form B Normally energized Self resetting Fault alarm setpoint 3 7 mA analog input signal One second 15 minutes Enabled The standard ranges for various transmitter types are listed in Appendix B Transmitters 14 1P CAUTION The standard ranges provide optimum performance of each transmitter type Contact Thermo Fisher Scientific before using a non standard range 71 0012 Installation and Start Up Changing the Settings The settings are made using the three DIP switches U1
22. e 3 both 4to 20 mA analog output signals go to 1 5 mA FAULT ALARM SETPOINT The Safe T Net 210 generates a fault alarm when either of the channel analog input signals drops below the 4 0 mA analog input signal zero point to the programmed fault alarm setpoint The setting applies to both channel inputs When the fault alarm is triggered the FAULT LED lights the buzzer sounds and the fault relay de energizes and the contacts close Set the fault alarm setpoint by setting U1 switches 6 and 7 as shown in Table 2 6 Table 2 6 Fault Alarm Trigger Levels Fault Alarm Analog Input U1 Switch 6 U1 Switch 7 Signal Setpoint 2 0mA OFF ON 3 2 mA ON OFF 3 7 mA factory setting ON ON 71 0012 21 Safe T Net 210 Operator s Manual CALIBRATION TIME OUT MODE If calibration time out mode is not turned off manually the Safe T Net 210 automatically returns to normal operation from calibration mode after a preprogrammed time from 0 no time out to 99 minutes SY NOTE The standard calibration time out factory setting is 15 minutes Program the calibration time out as follows 1 While in normal operation press the STEP and W DOWN buttons simultaneously to initiate the calibration time out setup mode 2 The channel 1 LOW and HIGH ALARM LEDs are lit the display shows the current calibration time out setting in minutes The calibration time out can now be set using the A UP and Y DOWN buttons 3 Press the STEP button to accep
23. e Safe T Net 210 must be calibrated at regular intervals following the procedures described in the transmitter inserts Interchangeability of Components The Safe T Net 210 controller can be used with any standard 2 or 3 wire 4 to 20 mA analog transmitter When changing transmitter types it may be necessary to change the range decimal point and alarm setpoints for the affected channel Follow the instructions for programming the Safe T Net 210 in Chapter 2 Installation and Start Up Troubleshooting This troubleshooting guide describes symptoms probable causes and recommended actions for problems you may encounter with the Safe T Net 210 refer to Table 5 1 This guide covers the Safe T Net 210 only see the Troubleshooting section in the Transmitters manual for problems you may encounter with the transmitters 71 0012 33 Table 5 1 w g Problem cL00 1Z No Display or Lig ts Troubleshooting Symptoms No readings or message on e display screens and no indicator lights Probable Cause Incomplete or incorrect power circuit Poorly connected or failed power supply Failed AC or DC fuse Poorly connected or failed controller module Poorly connected or failed display Poorly connected or failed ribbon cable Recommended Action 1 Verify that AC power is on 2 Verify correct connections at the AC power source 3 Verify that the wiring connections at the AC terminal block and the power supply are comple
24. elected gas units flash The channel 1 gas units PPM LEL VOL can now be set using the A UP and Y DOWN buttons 5 Press the STEP button to accept the desired value and go to the next setting 6 The channel 2 display flashes showing full scale range The channel 2 decimal place can now be set using the A UP and Y DOWN buttons 7 Press the STEP button to accept the desired value and go to the next setting 8 The channel 2 display Rows only the decimalpoint chosen the elected gas units flash The channel2 gas units PPM LEL VOL can now be set using the A UP and Y DOWN buttons 9 Return Ul switch 2 to OFF to resume normal operation 20 71 0012 Installation and Start Up SET UP MODE 3 Set up mode 3 is a factory only calibration that calibrates the signal input circuitry to recognize the 0 mA and 20 mA analog inputs 1P CAUTION Set up Mode 3 is a factory adjustment and is not generally meant to be made by the user 1 Initiate set up mode 3 by placing U1 switch 3 in theON position away from the edge of the board 2 Select channel 1 switch 4 ON or channel 2 switch 4 OFF 3 The selected display and status LEDs flash 4 With no signal 0 mA applied to the channel input terminals press the W DOWN button 5 Apply 20 0 mA to the channel input terminals and press the A UP button 6 Return Ul switch 3 to OFF to resume normal operation While the Safe T Net 210 is in set up mod
25. ent to Buyer for equipment and ninety 90 days for all other products the Warranty Period Seller agrees during the Warranty Period to repair or replace at Seller s option defective Products so as to cause the same to operate in substantial conformance with said published specifications provided that a Buyer shall promptly notify Seller in writing upon the discovery of any defect which notice shall include the product model and serial number if applicable and details of the warranty claim b after Seller s review Seller will provide Buyer with service data and or a Return Material Authorization RMA which may include biohazard decontamination procedures and other product specific handling instructions and c then if applicable Buyer may return the defective Products to Seller with all costs prepaid by Buyer Replacement parts may be new or refurbished at the election of Seller All replaced parts shall become the property of Seller Shipment to Buyer of repaired or replacement Products shall be made in accordance with the Delivery provisions of the Seller s Terms and Conditions of Sale Consumables including but not limited to lamps fuses batteries bulbs and other such expendable items are expressly excluded from the warranty under this warranty Notwithstanding the foregoing Products supplied by Seller that are obtained by Seller from an original manufacturer or third party supplier are not warranted by Seller b
26. er warm up All displays and No power 1 Check AC and DC fuses and power LEDS off wiring Start up is complete and the Safe T Net 210 is operating in normal mode 24 71 0012 NORMAL OPERATION AND ALARMS Normal Operation Normal operation is any time the start up procedure is complete no calibration or set up procedures are in progress and no alarm or fault condition exists During normal operation the Safe T Net 210 behaves as follows The display screens display the current gas concentrations channel 1 on the top screen channel 2 on the bottom screen The 4 to 20 mA analog output signals at the terminal strip terminals 12 and 13 for channel 1 14 and 15 for channel 2 correspond to the displayed gas readings s The HIGH ALARM LOW ALARM and FAULT lights and relays for both channels are deactivated Alarms This section describes the Safe T Net 210 indications for low alarm high alarm and fault conditions including the standard relay action The Safe T Net 210 activates visual audible and relay alarm indications when any of the programmed alarm setpoints are passed Ww WARNING The calibration mode feature of the Safe T Net 210 allows you to disable the alarm LED S buzzer and relays during calibration procedures and response tests When calibration mode is activated the LED S buzzer and relays will not operate as described in this section Table 3 1 lists the Safe T Net 210 s alarm indications
27. gnals e Connect the positive lead of the external monitoring device to the positive terminal of the output signal for that channel e Connect the negative lead of the external monitoring device to the negative terminal of the output signal for that channel 1P CAUTION i The maximum input impedance of the monitoring device must not exceed 1 000 ohms Wiring AC Power The Safe T Net 210 operates from either 115 or 230 VAC power Ww WARNING Verify that the AC power you are using matches the power supply installed in the Safe T Net 210 Refer to the Controller Module label for verification YY WARNING Make all of the internal connections before you turn on the AC power Always turn off the AC power before making any wiring changes 1 Run the optional AC line cord assembly or other AC power line through the left conduit hub 2 Connect the incoming AC leads to terminals L N and G of the AC terminal block see Figure 2 4 e Connect the line hot black lead to L e Connect the neutral white lead to N e Connect the ground green lead to G 71 0012 11 Safe T Net 210 Operator s Manual 3 The wiring between the AC terminal block and the power supply is installed at the factory This information is included in case the power supply needs to be replaced The black lead goes from the L terminal of the AC terminal block to the L terminal of the power supply e The white lead goes from the N termina
28. he left conduit hub The channel 1 and channel 2 input output wiring is routed through the center and right conduit hubs including Power and signal leads to the channel 1 and channel 2 transmitters Analog outputs to the channel 1 and channel 2 recorders or other monitoring devices Controller Module Terminal Strip The controller module terminal strip is composed of three connectors of nine terminals each The connectors can be removed to facilitate installation and service operations and keyed to prevent them from being interchanged The 27 screw type terminals accept wire up to 12 gauge 2 220023355575 1920 21 22 23 24 25 25 27 CARARAARA Figure 2 3 Controller Circuit Board Terminal Strip 8 71 0012 Table 2 1 Terminal Label C OM QZ O OM QZ O OM QZ O OM C ZOZ O O C Z ZOZ SHIELD FB RESET GND COM 24 VDC Installation and Start Up Safe T Net 210 Terminal Strip Terminal Description Number T27 Normally closed 1 Common fault relay T26 Common T25 Normally open 2 Channel 2 T24 Common high alarm relay T23 Normally open 2 Channel 1 T22 Common high alarm relay T21 Normally open Channel 2 T20 Common low alarm relay T19 Normally closed T18 Normally open Channel 1 T17 Common low alarm relay T16 Normally closed T15 4 to 20 mA Channel 2 T14 Common 4to20mA malog output signal T13 4 to 20 mA Channel 1 T12 Common 4to20mA nalog
29. he two screws Connect the red wire to the positive terminal of the buzzer connect the black wire to the negative terminal of the buzzer 6 Tighten the nut against the housing securing the buzzer in place 7 Restart the Safe T Net 210 according to the ingructions in the Sart Up section of Chapter 2 Replacing the RESET Button 1 Make sure the AC power is turned off 2 Remove the two screws connecting the buzzer wires to the RESET button If necessary loosen the nut holding the button in the housing and turn the button for access to each screw 3 Unscrew the nut and pull the button out through the hole 4 Insert the replacement RESET button in through the hole Screw the nut onto the threads of the button but do not tighten it yet 5 Connect the wires to the new button using the two screws 6 Tighten the nut against the housing securing the button in place 7 Restart the Safe T Net 210 according to the ingructions in the Sart Up section of Chapter 2 71 0012 41 Safe T Net 210 Operator s Manual 42 71 0012 Table A 1 Part No 29 0018 43 0440 43 4140 43 4232 43 4234 47 0003 47 1011 49 0073 52 1016 57 0014 02 57 0015 02 71 0012 73 0003 73 0006 71 0012 Appendix A PARTS LIST Safe T Net 210 Parts List Description Gas type labels front panel includes one label for each gas type RESET switch DC fuse 3AG 1 250 Volts 1 Amp AC fuse SO BLO 250 Volts 1 Amp 230V system
30. ific transmitters making it capable of detecting a broad range of gases Appendix B Transmitters lists the transmitters you can order with your controller 71 0012 1 Safe T Net 210 Operator s Manual Features Accepts one or two channels of standard 4 to 20 mA analog input signals from remote 2 or 3 wire transmitters for detecting combustible gas toxic gas or oxygen concentrations Simultaneously displays the current gas reading for both channels Provides a 4 to 20 mA analog output for each channel Warns you of hazardous gas concentration conditions with audible and visual indications at two alarm setpoints for each channel Provides a low and a high alarm relay for each channel Fault circuit provides visual audible and relay indications to warn you of detector failure or other malfunctions Components are enclosed in a wall mounted NEMA 4X housing Programmable Relay Operation Each active channel has two relays Low alarm and high alarm A master faut relay activates if either channel is in a fail condition You can program the relays for latching or self resetting alarm logic energizing or de energizing relay activation low and high alarm relays activation on rising or falling signal levels and time delay 0 to 30 seconds to avoid false alarms due to radio frequency interference RFI or electromagnetic interference EMI Accessories The standard and optional accessories for the Safe T Net 210 see Appendi
31. isplay for channel 1 can now exceed the alarm levels without activating the channel 1 alarm relays 2 Pressing the CALIBRATE button a second time puts both channels into calibration mode The displays for both channels flash alternating the gas readings with CAL The LOW HIGH and FAULT LEDs for both channels flash The relays for both channels remain inactive and both analog output signals go to 1 5 mA The display for either or both channels can now exceed the alarm levels without activating the alarm relays 3 Pressing the CALIBRATE button a third time returns channel 1 to the normal operation and puts channel 2 into calibration mode The display for channel 2 flashes alternating the gas reading with CAL The channel 2 LOW HIGH and FAULT LEDs flash The channel 2 relays remain inactive and the analog output signal falls to 1 5 mA Channel 1 remains in the normal monitoring mode The display for channel 2 can now exceed the alarm levels without activating the channel 2 alarm relays 4 Pressing the CALIBRATE button a fourth time returns both channels to normal operation 32 71 0012 MAINTENANCE Ww WARNING Perform all maintenance procedures described in this chapter in a non hazardous environment Routine Maintenance Routine maintenance of the Safe T Net 210 consists only of periodic checks to ensure that the system remains on zero 20 9 for O and is responsive to gas The transmitters used with th
32. it board 6 Remove the four standoffs holding the controller circuit board in place and lift the circuit board out of the housing 7 Set the DIP switches on the replacement controller module to match the settings on the old controller module 8 Hold the replacement controller circuit board in position against the mounting plate and fasten it in place using the four standoffs 9 Plug the ribbon cable and the buzzer in to the new controller circuit board 10 Install the cover 11 Plug the three connectors in to the new controller module terminal strip The connectors are keyed to preserve the proper order Number 1 at the left number 27 at the right 12 Prepare the new controller module for your application according to the instructions in the Programming and Start Up sections of Chapter 2 13 Restart the Safe T Net 210 according to the intructions in the Sart Up section of Chapter 2 40 71 0012 Maintenance Replacing the External Buzzer 1 Make sure the AC power is turned off 2 Remove the two screws connecting the buzzer wires to the buzzer If necessary loosen the plastic nut holding the external buzzer in the housing and turn the buzzer for access to each screw 3 Unscrew the plastic nut and pull the buzzer out through the hole 4 Insert the replacement buzzer in through the hole Screw the plastic nut onto the threads of the buzzer but do not tighten it yet 5 Connect the buzzer wires to the new buzzer using t
33. l of the AC terminal block to the N terminal of the power supply e The green lead goes from the G terminal of the AC terminal block to the large ground terminal next to the power supply POWER SUPPLY CONTROLLER MODULE V O FG tud ORANGE f Pa BLACK A SO GREEN 2 BLACK D O 0 O O Factory wiring SS Customer wing TWiki E E a VAC Figure 2 4 AC and DC Power Wiring 12 71 0012 Installation and Start Up Wiring DC Power The DC power wiring between the AC terminal block the power supply and the controller module is installed at the factory This information is included in case the power supply or the controller need to be replaced Connect the DCleads between the power supply and terminals through 3 of the controller module see Figure 2 4 1 Connect the positive lead from power supply terminal V to controller terminal 1 24VDC 2 Connect the negative lead from power supply terminal O to controller terminal 2 COM 3 Connect the ground lead from power supply terminal FG to controller terminal 3 GND Programming The Safe T Net 210 can be programmed for any gas detection application supported by the 4 to 20 mA transmitters listed in Appendix B Transmitters Using the programming switches and buttons along the edge of the
34. l strip Figure 5 1 Internal Components 36 71 0012 Maintenance Replacing Fuses The Safe T Net 210 has two fuses an AC fuse and a DC fuse REPLACING THE AC FUSE The AC fuse is located inside AC terminal block position L To replace the AC fuse 1 Pull back the hinged section of terminal block position L to reveal the fuse 2 Replace with the same type see Parts List Appendix A and snap the section back into place o 599505000 060000000 000000009 ee DC fuse AC fuse Figure 5 2 AC and DC Fuse REPLACING THE DC FUSE The DC fuse is located at the edge of the controller circuit board To replace the DC fuse 1 Disconnect power to the Safe T Net 210 by pulling back the hinged section of AC terminal block position L 2 Remove the six screws holding the controller module cover and remove the cover 3 Locate the fuse on the controller circuit board and remove it from its spring clips using a screwdriver 4 Replace the fuse with the same type see Parts List Appendix A 5 Reinstall the controller module cover 6 Restart the Safe T Net 210 according to the ingructions in the Sart Up section of Chapter 2 71 0012 37 Safe T Net 210 Operator s Manual Replacing the Ribbon Cable 1 Make sure the AC power is turned off 2 Remove the six screws holding the controller module cover and remove the cover 3 Unplug the ribbon cable
35. n inactive the buzzer remains off and the analog output signal goes to 1 5 mA Activate calibration mode by pressing the CALIBRATE button through the opening marked CALIBRATE on the display module cover plate inside the housing door If you do not turn off calibration manually it will turn off automatically when the calibration time out has elapsed standard factory setting is 15 minutes See the Calibration Time Out section of Chapter 2 Installation and Start Up for programming instructions y CAUTION The visual and audible alarm indications and relays are inactive during calibration time out and will not indicate any hazardous gas concentrations that may occur while calibration mode is enabled Calibration mode has four settings see Table 4 1 Table 4 1 Calibration Mode Settings CALIBRATE Channel 1 Channel 2 button Status Status Press 1 time Calibration mode Normal operation Press 2nd time Calibration mode Calibration mode Press 3rd time Normal operation Calibration mode Press 4th time Normal operation Normal operation 71 0012 31 Safe T Net 210 Operator s Manual 1 Pressing the CALIBRATE button the first time puts channel only into calibration mode The display for channel 1 flashes alternating the gas reading with CAL Channel 1 LOW HIGH and FAULT LEDs flash The channel 1 relays remain inactive and the analog output signal goes to 1 5 mA Channel 2 remains in the normal monitoring mode The d
36. n the Transmitters manual 3 Verify that all wiring connections are correct and secure Introducing Power Turn on the incoming power at the power source SY NOTE The low alarm high alarm and fault circuits are not active for 1 minute after power is applied to the Safe T Net 210 This time delay minimizes false alarms during transmitter warm up 71 0012 23 Safe T Net 210 Operator s Manual Verifying Indicator Lights 1 Verify that the displays are on 2 If no light comes on during the start up sequence the Safe T Net 210 is not receiving power Check the wiring connection the power source and the fuses See Chapter 5 Maintenance for detailed troubleshooting instructions 3 Table 2 7 lists the conditions indicated by the status indicator lights during start up and the suggested response for each condition Table 2 7 Start Up Indications Indicators Probable Status Recommended Response Displays and Receiving power None other lights on FAULT LED on Below zero reading 1 Allow the transmitter to warm up 2 Zero the transmitter output 3 Replace detector if the below zero reading continues 4 See the Troubleshooting section of Chapter 5 Maintenance Detector transmitter 1 Verify transmitter and detector or circuitry is wiring is correct and secure broken incomplete 2 See the Troubleshooting section of or incorrect the Transmitters manual ALARM LED on Above zero reading 1 Zero detector aft
37. ndications continue unless reset until the concentration increases above the setpoint RESET Press the RESET button on the bottom of the housing to reset the alarm This causes the low alarm relay to deactivate and the buzzer to silence The LOW ALARM LED continues to flash until the alarm condition passes Thermo Fisher Scientific sets the low alarm set points except oxygen for latching action Oxygen channel low alarms are factory programmed to be self resetting You can select latch or self reset alarm action in the setup modes described in Chapter 2 Installation and Start Up 26 71 0012 Normal Operation and Alarms If the low alarm is latching If the low alarm has been configured to be latching and the alarm has not been acknowledged the buzzer LED and relay remain active after the alarm condition has passed These alarm indications must then be cleared by pressing the RESET button on the bottom of the housing 1 Follow the established procedure for a low level combustible or toxic gas condition or a decreasing oxygen condition If a procedure is not in place establish one that is appropriate for your application 2 When the reading returns to normal press the RESET button to silence the buzzer turn off the LOW ALARM light deactivate the alarm relay and reset the alarm circuit If the low alarm is self resetting 1 Follow the established procedure for a low level combustible or toxic gas condition or a dec
38. ndix B Transmitters of the Safe T Net 210 Operator s Manual provide optimum performance of each transmitter type Contact Thermo Fisher Scientific before using a non standard range You can exit set up mode by setting switch 1 to OFF at any point during the procedure without losing your settings In addition range and alarm settings are retained by the Safe T Net 210 even when power is removed While the Safe T Net 210 is in set up mode 1 both 4 to 20 mA analog outputs go to 1 5 mA 1 Initiate set up mode 1 by placing U1 switch 1 in the ON position away from the edge of the board 2 The channel 1 display LOW ALARM LED and HIGH ALARM LED flash Channel 1 range cannow be setusing the A UP and Y DOWN buttons 3 Press the STEP button to accept the desired value and go to the next setting 4 The channel 1 display and LOW ALARM LED flash Channel 1 low alarm level can now be set using the A UP and Y DOWN buttons 5 Press the STEP button to accept the desired value and go to the next setting 6 The channel 1 display and HIGH ALARM LED flash Channel 1 high alarm level can now be set using the A UP and Y DOWN buttons 7 Press the STEP button to accept the current value and go to the next setting 8 The channel 2 display LOW ALARM LED and HIGH ALARM LED flash Channel 2 range cannow be setusing he A UP and Y DOWN buttons 9 Press the STEP button to accept the desired value and go to the next setting 10
39. nnect the positive or hot wire of the external alarm device to the NC normally closed or NO normally open terminal of the corresponding relay as appropriate e Connect the negative or neutral lead of the external power source to the negative or neutral lead of the alarm device Y NOTE 10 The low and high alarm relays are factory set to be deenergized in normal operation and to energize when the Safe T Net 210 is in alarm condition Each alarm relay can be individually reprogrammed to energize in normal condition and de energize when an alarm occurs To reprogram the alarm relays use the U9 and U10 DIP switch settings described in the Changing the Settings section in this chapter The common fault relay is energized in normal operation and de energizes when the Safe T Net 210 is in fault condition The fault relay cannot be programmed for normally de energized operation NO normally open and NC normally closed describe the condition of the relay when it is de energized If the relay is energized in normal operation NC is open and NO is closed 71 0012 Installation and Start Up Wiring the Analog Outputs 1 Run the analog output leads through the selected conduit hubs not the same conduit hub as the AC wiring and the external alarm wires 2 Connect the analog output leads to the contrdler circuit board terminal strip as shown in Figure 2 2 Terminals 12 through 15 pertain to the channel and channel 2 analog output si
40. on has passed The high alarm indications can only be cleared by pressing the RESET switch on the bottom of the housing 1 Follow the established procedure for a high level combustible toxic or oxygen gas condition If a procedure is not in place establish one that is appropriate for your application SY NOTE You cannot silence the buzzer while the Safe T Net 210 is in a high alarm condition The reading must decrease below the high alarm setpoint before you can silence the buzzer 2 After the reading decreases below the high alarm setpoint press the RESET button to turn off the HIGH ALARM light deactivate the alarm relay and reset the alarm circuit If the high alarm is self resetting 1 Follow the established procedure for a high level combustible toxic or oxygen gas condition If a procedure is not in place establish one that is appropriate for your application YY NOTE You cannot silence the buzzer while the Safe T Net 210 is ina high alarm condition The reading must decrease below the high alarm setpoint before you can silence the buzzer 2 After the reading decreases below the high alarm setpoint the Safe T Net 210 automatically turns off the HIGH ALARM light de energizes the high alarm relay and resets the high alarm circuit 3 When the reading decreases below the high alarm setpoint the Safe T Net 210 may still be in low alarm condition Respond to the low alarm condition as appropriate 28 71
41. ositive DC lead that is connected to controller terminal and connect the free end to power supply terminal V e Find the black negative DC lead that is connected to controller terminal 2 and connect the free end to power supply terminal O e Find the orange DC ground lead that is connected to controller terminal 3 and connect the free end to power supply terminal FG 9 Hold the replacement power supply in position against the front of the mounting plate and fasten it in place using the two screws through the back of the mounting plate 10 Position the mounting plate and fasten it to the housing using the four screws at the corners 11 Plug the ribbon cable into the controller circuit board 12 Reinstall the cover on the controller module 13 Restart the Safe T Net 210 according to the ingructions in the Sart Up section of Chapter 2 71 0012 39 Safe T Net 210 Operator s Manual Replacing the Controller Circuit Board 1 Make sure the AC power is turned off 2 Unplug the three removable connectors from the controller module terminal strip 3 Remove the six screws holding the controller module cover and remove the cover 4 Record the position of the 24 DIP switches on the old controller module to simplify setting the switches on the replacement module The ON position is away from the edge of the board OFF is towardthe edge of the board 5 Unplug the ribbon cable and the buzzer from the controller circu
42. reasing oxygen condition If a procedure is not in place establish one that is appropriate for your application 2 After the reading returns to normal the Safe T Net 210 automatically silences the buzzer turns off the LOW ALARM light deactivates the applicable alarm relay and resets the alarm circuit High Alarm When the display level passes the programmed high alarm setpoint The HIGH ALARM LED lights The buzzer continues to pulse The high alarm relay activates If the alarm is set to trigger on a rising concentration the indications continue until the reading decreases below the setpoint and if the alarm is latching the RESET button is pressed If the alarm is set to trigger on a falling concentration the indications continue until the reading increases above the setpoint and if the alarm is latching the RESET button is pressed YY NOTE Unlike the low alarm you cannot reset the high alarm while the reading is at or above the high alarm set point Thermo GasTech sets the high alarms except oxygen for latching alarm action Oxygen channel high alarms are factory programmed to be self resetting You can select latch or self reset alarm action in the Setup modes described in Chapter 2 Installation and Start Up 71 0012 27 Safe T Net 210 Operator s Manual If the high alarm is latching If the high alarm has been configured to be latching the buzzer LED and relay remain active after the alarm conditi
43. t the desired value and resume normal operation 1P CAUTION The visual and audible alarm indications and relays are inactive during calibration time out and will not indicate any hazardous gas concentrations that may occur while calibration mode is enabled 22 71 0012 Installation and Start Up ALARM DELAY The Safe T Net 210 can be programmed to delay the operation of alarm relays and status LEDs for a pre determined time after alarm levels have been exceeded This feature prevents nuisance alarms caused by transient radio frequency interference RFI The alarm delay can be set from 0 no delay to 30 seconds YY NOTE The standard alarm delay factory setting is one second Ww WARNING Audible and visible alarm indicators are not active and relays not activated for the length of the alarm delay Set the alarm delay as follows 1 While in normal operation press the A UP and W DOWN buttons simultaneously to initiate the alarm delay set up mode 2 The channel 1 display shows the current alarm delay in seconds The alarm delay can now be set using the A UP and W DOWN buttons 3 Press the STEP button to accept the desired value and resume normal operation Start Up Complete the following procedures to place the Safe T Net 210 in normal operation Preparing for Start Up 1 Complete the mounting and wiring procedures described earlier in this chapter 2 Complete all installation procedures described i
44. tch closest to the fuse The switches of U10 control the operation of the channel 2 low and high relays Switch 7 turns channel 2 on and off Table 2 5 DIP switch U10 Channel 2 Settings Switch Position 1 top ON OFF 2 ON OFF 3 ON OFF 4 ON OFF 5 ON OFF 6 ON OFF 7 ON OFF 8 bottom OFF Function Channel 2 low relay latched Channel 2 low relay unlatched self resetting Channel 2 low relay normally de energized Channel 2 low relay normally energized Channel 2 low relay activated on falling level Channel 2 low relay activated on rising level Channel 2 high relay latched Channel 2 high relay unlatched self resetting Channel 2 high relay normally de energized Channel 2 high relay normally energized Channel 2 high relay activated on falling level Channel 2 high relay activated on rising level Channel 2 OFF Channel 2 ON Must be set to OFF only 1 When channel 2 is off the display shows OFF the status LEDs HIGH ALARM LOW ALARM and FAULT are off the relays are held in the inactive state the analog output is 0 mA and the channel cannot be placed in calibration mode 18 71 0012 Installation and Start Up SET UP MODE 1 RANGES AND ALARM SETPOINTS Set up mode 1 is used to set the following range and alarm levels for channel 1 and channel 2 e Channel 1 range low alarm and high alarm e Channel 2 range low alarm and high alarm 1P CAUTION The standard ranges are listed in Appe
45. te and correct 4 Check that the display cable connections are secure 5 Check the continuity of the AC fuse located at the AC terminal block and replace if necessary 6 Check the continuity of the DC fuse located on the controller module and replace if necessary 7 Check the AC voltage between the black and white wires at the connection block If the voltage is ircorrect or not present troubleshoot the external AC power source 8 Check the DC voltage at terminals 1 and 2 of the controller module If the voltage is not within the range 23 to 25 V replace the power supply 9 If there is still no display replace the ribbon cable 10 If there is still no display replace the display module 11 If there is still no display replace the controller module 12 If power failure symptoms continue contact Thermo Fisher Scientific for further instruction C LOU L Z Ge Table 5 1 Frequent or Suspect Alarms No Audible Alarm Incorrect Displays or Indicators Troubleshooting Frequent or Suspect Alarms Buzzer does not sound appropriate audible alarm Audible alarm sounds weak or broken Letters or numbers on the display screens are missing or distorted LED indicators do not light up appropriately False readings due to radio frequency interference RFI or electromagnetic interference EMI Calibrate mode is on Buzzer is disabled Buzzer is disconnected Buzzer is malfunctioning F
46. ual indication Acknowledged using the RESET button Programmable to activate on rising or falling level Independently adjustable from OFF to full scale Audible and visual indication Programmable to activate on rising or falling level Programmable to activate at 3 7 mA 3 2 mA or 2 0 mA input signal Can be disabled Factory setting 3 7 mA Programmable from 0 no time out to 99 minutes Alarm delay Programmable from 0 no delay to 30 seconds Operating 20 to 45 C 5 to 115 F temperature 71 0012 3 Safe T Net 210 Operator s Manual Table 1 1 Safe T Net 210 Specifications Operating humidity 0 to 100 RH non condensing Enclosure rating NEMA 4X Overall Dimensions 10 50 267 mm W 12 50 318 mm H 625 159 mm D Weight Approximately 8lbs 3 8 Kg Case material Molded fiberglass polyester Approvals UL Classified CSA certified File No LR60959 35C 4 71 0012 INSTALLATION amp START UP sI WARNING Perform all installation procedures in a fresh air environment known to be free of combustible and toxic gas and having normal oxygen content The Safe T Net 210 is not in operation as a gas monitoring system until the start up procedure is complete Mounting 10 50 in 267 mm a 6 25 in 159 mm JOD Di PEINE mm 12 94 in P aia 329 mm TYPE 210 GAS MONITOR Thermo SCIENTIFIC RESET DI Y 8
47. ut Seller agrees to assign to Buyer any warranty rights in such Product that Seller may have from the original manufacturer or third party supplier to the extent such assignment is allowed by such original manufacturer or third party supplier In no event shall Seller have any obligation to make repairs replacements or corrections required in whole or in part as the result of i normal wear and tear ii accident disaster or event of force majeure iii misuse fault or negligence of or by Buyer iv use of the Products in a manner for which they were not designed v causes external to the Products such as but not limited to power failure or electrical power surges vi improper storage and handling of the Products or vii use of the Products in combination with equipment or software not supplied by Seller If Seller determines that Products for which Buyer has requested warranty services are not Warranty Warranty covered by the warranty hereunder Buyer shall pay or reimburse Seller for all costs of investigating and responding to such request at Seller s then prevailing time and materials rates If Seller provides repair services or replacement parts that are not covered by the warranty provided in this warranty Buyer shall pay Seller therefor at Seller s then prevailing time and materials rates ANY INSTALLATION MAINTENANCE REPAIR SERVICE RELOCATION OR ALTERATION TO OR OF OR OTHER TAMPERING WITH THE PRODUCTS PERFORMED BY
48. x A for parts numbers e Operators Manual standard Includes detailed installation operation maintenance and calibration procedures for the Safe T Net 210 e AC line cord optional Three conductor cable with reducer and cord grip for installation 2 71 0012 Specifications Introduction Table 1 1 lists the specifications of the Safe T Net 210 See Appendix B Transmitters for gas detection specifications Table 1 1 Safe T Net 210 Specifications Range Analog signal inputs Analog outputs Relay outputs AC power Current consumption Fuses Low alarms High alarms Common fault alarm Calibration time out Adjustable to 999 Decimal can be set in any position Two 24 VDC 4 to 20 mA analog input signals source type two or three wire One 4 to 20 mA source for each channel 1000 OHMS maximum 24 VDC input Low alarm relay Form C and high alarm relay Form A for each channel programmable for htching non latching and energized de energized Common fault Form B normally energized programmable for latching non latching Each relay rated at 10 AMP 125 VAC Nominal 115 VAC 60 Hz Tolerance 85 to 132 VAC 47 63 Hz or 230 VAC 60 Hz Tolerance 170 to 264 VAC 47 63 Hz 0 4 Amp maximum AC fuse GMA 2 250 V 2 Amp 115V system AC fuse SO BLO 250 Volts 1 Amp 230V system DC fuse 3AG 1 250 V 1 Amp Independently adjustable from OFF to full scale Audible and vis

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