TLM-8 User`s Guide, Rev D October 2007
Contents
1. NEN RC T 3 o a e 5 9 o o 8 o TB2 Global Relay Outputs Global Alarm Terminals Output JN WARNING You must connect the thermocouple to the input terminal blocks correctly If the inputs are reversed the sensor may be unable to generate an alarm This could result in a fire or other accident leading to loss of property or lives A CAUTION To protect the alarm relay contacts when connected to an inductive load use catch diodes for dc loads and snub bers on ac or dc loads For dc applications select a diode with a reverse breakdown voltage 10 times the applied voltage and forward load current B G Load Adz 3 SIS gt Rl Back EMF Clamp ISIE e L 1 Load e ax E e H H IRV P e El Back EMF Clamp S amp O B Wiring Recommendations for relay outputs A CAUTION To minimize the power dissipated by the internal circuits and ensure temperature accuracy apply voltage to the ACK and TST inputs only when intending to test the TLM 8 or acknowledge alarms At other times the applied signal should be OV dc NOTE To avoid interference with sensor readings sepa rate sensor and power wiring NOTE This device is designed for indoor use only NOTE Use only copper conductors for power and signals other than thermocouples NOTE Previous versions of the TLM 8 recommended earth groundi2. 1 665 F C 1 746 F 998 C 1 828 F 057 C 1 935 F 101 C 2 014 F 754 C 1 389 F 0 753 C o co e Li e co Cc pate co Cc N c5 e e Li e c a o o ovJjo e Cc N e J K L V k e c o ta c E o 2 115 F C 2 201 F wW X DS e a e WATLOW TLM 8 User s Guide 7 How to Reach Us Corporate Headquarters Watlow Electric Manufacturing Company 12001 Lackland Road St Louis MO 63146 Sales 1 800 WATLOW2 Manufacturing Support 1 800 4WATLOW Email info watlow com Website www watlow com From outside the USA and Canada Tel 1 314 878 4600 Fax 1 314 878 6814 Latin America Watlow de M xico S A de C V Av Fundici n No 5 Col Parques Industriales Quer taro Qro CP 76130 Mexico Tel 52 442 217 6235 Fax 52 442 217 6403 Europe Watlow France SARL Immeuble Somag 16 Rue Amp re 95307 Cergy Pontoise CEDEX France Tel 33 0 1 30 73 24 25 Fax 33 0 1 30 73 28 75 Email info watlow fr Website www watlow fr Watlow GmbH Postfach 11 65 Lauchwasenstr 1 D 76709 Kronau Germany Tel 49 0 7253 9400 0 Fax 49 0 7253 9400 900 Email info watlow de Website www watlow de Watlow Italy S r l Viale Italia 52 54 20094 Corsico MI Italy Tel 39 024588841 Fax 39 0245869954 Email italyinfo watlow com Website www watlow it Watlow Ib rica S L U CME Avda de la V a L ctea s
3. Fax 86 21 5080 0906 Website www watlow cn Fax 03 3518 6632 Website www watlow co jp Watlow Japan Ltd 1 14 4 Uchikanda Chiyoda Ku Tokyo 101 0047 Japan Tel 81 3 3518 6630 Email infoj watlow com Fax 81 3 3518 6632 Website www watlow co jp Revised September 20 2007 Watlow Korea Co Ltd 1406 E amp C Dream Tower 46 Yangpyeongdong 3ga Yeongdeungpo gu Seoul 150 103 Republic of Korea Tel 82 2 2628 5770 Fax 82 2 2628 5771 Website www watlow co kr Watlow Malaysia Sdn Bhd No 14 3 Jalan 2 114 Kuchai Business Centre Jalan Kuchai Lama 58200 Kuala Lumpur Malaysia Tel 60 3 7980 7741 Fax 60 3 7980 7739 FL BE SEM R2 A RA Ri 80143 SH Bi Set E 281898 108 7 ERK 07 2885168 E 07 2885568 Watlow Electric Taiwan Corporation 10F 1 No 189 Chi Shen 2nd Road Kaohsiung 80143 Taiwan Tel 886 7 2885168 Fax 886 7 2885568 Your Authorized Watlow Distributor TOTAL CUSTOMER SATISFACTION 3 Year Warranty
4. UL cUL Listed File No E185611 Process Control Equipment UL 61010 Process Control Equipment C22 2 61010 1 FM Temperature Limit Switches Non Indicating Class 3545 Temperature Supervisory Switch Class 3545 CE Low Voltage Directive LVD 73 23 EEC Electromagnetic Compatibility Directive EMC 2004 108 EC WATLOW TLM 8 User s Guide TLM 8 Part Numbers Use the tables to determine the characteristics of your TLM 8 based on its part number Standard TLM 8 Part Number Custom TLM 8 Part Number TLME TLMC 0 0 Sensor Type Sensor Type 0 RTD or Thermostat 0 RTD or Thermostat 1 Type E Thermocouple 1 Type E Thermocouple 2 Type J Thermocouple 2 Type J Thermocouple 3 TypeK Thermocouple 3 TypeK Thermocouple 4 Type R Thermocouple 4 Type R Thermocouple 5 Type S Thermocouple 5 Type S Thermocouple 6 TypeT Thermocouple 6 Type T Thermocouple Alarm Relays Alarm Relays 0 Global relays only O Global relays only 1 Global and 8 channel alarm relays 1 Global and 8 channel alarm relays Mounting Mounting O0 Panel O Panel 1 DIN Rail 1 DIN Rail Trip Point Channels 1 through 8 Custom Code See Trip Point table below 3 digit code assigned by factory See label on unit for trip point values Trip Points E Thermocouple J Thermocouple K Thermocouple R Thermocouple S Thermocouple T Thermocouple Temperature Trip Temperature End Temperature Trip Temperature Trip Temperature Trip Temper
5. Watlow Electric and Manufacturing Company All rights reserved i4 WATLOW ANAFAZE Watlow Controls 1241 Bundy Blvd Winona MN 55987 Customer Service Phone 1 800 414 4299 Fax 1 800 445 8992 Technical Support Phone 507 494 5656 Fax 507 452 4507 E mail wintechsupport watlow com Relays that open on alarm are consistent with fail safe designs and practices Alarms are acknowledged with an optically isolated digital input Another isolated digital input is used for testing by simulating alarms on all channels Optional 8 N O Channel Relay Outputs Heater Power TLM 8 Interlocks Alarm Thermal Limit Monitor 8 Sensor Inputs TST amp ACK Inputs Anunciation PLC etc 2 N O Global Relay Output 3 Power LAT TLM 8 System Diagram Warranty The TLM 8 is manufactured by ISO 9001 registered processes and is backed by a three year warranty to the first purchaser for use providing that the units have not been misapplied Since Watlow has no control over their use and sometimes misuse we cannot guar antee against failure Watlow s obligations hereunder at Watlow s option are limited to replacement repair or refund of purchase price and parts which upon examination prove to be defective within the warranty period specified This warranty does not apply to dam age resulting from transportation alteration misuse or abuse The purchaser must use Watlow parts to main tain all l
6. Channel 2 n4 Channel 7 4 Channel 8 I Power OOO DOOGOOOGSG DOE QVOOOCEY 9r A XNA 8 4 9 S y tI O f Alarm Status Indicator Lights Testing the Outputs The TLM 8 TST digital input allows users to simulate excessive temperature on all channels An external device switch or controller provides the logic sig nal to the test TST input All channels go into alarm which can be easily verified by the channel indicator lights Use the following procedure to test the TLM 8 1 Activate the TST input for at least 1 second All alarms and indicator lights should activate Deactivate the TST input Activate the ACK input for at least 20 millisec onds 4 Deactivate the ACK input All alarms should deac tivate within 3 5 seconds w N Changing Trip Points To change a trip point on the TLM 8 obtain an RMA number from your supplier and return the TLM 8 for adjustment Maintenance Over temperature conditions may not occur regularly To test the TLM 8 s outputs use the procedure in the section Testing the Outputs to force the TLM 8 to simulate alarm conditions on all channels To test trip point values and other system components use a thermocouple calibrator or other appropriate means to simulate a sensor input above the trip point WATLOW TLM 8 User s Guide Application Example In the following exampl
7. TLM 8 User s Guide Features and Description The TLM 8 is a multi zone temperature limit switch For thermal system safety the TLM 8 can satisfy the requirement for independent temperature monitoring The TLM 8 s alarm outputs interface with visual and audible alarm devices or they can initiate safe shut down of equipment The TLM 8 has the following features e Multi channel temperature monitoring e Latching alarms e Isolated sensor inputs e Support for various thermocouples RTDs and thermostats e Diagnostic test mode Open sensor fail safe e Compact and easy to install LED indicator lights Up to eight temperature zones may be monitored If any temperature exceeds a trip point the TLM 8 gen erates an alarm output The alarm output may be used for safety shutdown or annunciation Alarm outputs remain active until two conditions are met in sequence the temperature drops below the trip point and alarms are acknowledged Built in indicator lights show power and alarm states The TLM 8 accepts up to eight thermocouple RTD or thermostatic switch temperature sensors There are two global alarm relay outputs The TLM 8 is also available with eight channel alarm relays in addition to the two global relay outputs If all temperatures are below the trip point the TLM 8 s relay outputs are closed When alarms activate the relay contacts open Part No 0600 2150 2000 Rev D Revised October 2007 2004 2007
8. ation of Conformity Specifications Analog Inputs Sensor input channels 8 Sensor Types and Trip Point Ranges 2 Wire 100 O Platinum RTD DIN curve 385 100 to 850 C 148 to 1 562 F E Thermocouple 100 to 801 C 212 to 1 474 F e K Thermocouple 100 to 1 205 C 212 to 2 201 F e S Thermocouple 500 to 1 711 C 932 to 3 112 F J Thermocouple 100 to 754 C 212 to 1 389 F e R Thermocouple 500 to 1 720 C 932 to 3 128 F e T Thermocouple 100 to 384 C 212to 723 F Thermostatic switch At actual temperatures of 100 C 148 F or less nuisance alarms may occur Accuracy for trip points above 100 C 212 F For part numbers starting with TLME 5 of trip point For part numbers starting with TLMC see below Sensor s Trip Point Accuracy Ambient 15 to 35 C 59 to 95 F J K E T RTD 0 5 of trip point and 2 C 3 2 F 0 5 of trip point and 3 C 5 4 F Repeatability better than 5 C 9 F or accuracy for trip point whichever is less Input filter 1 second minimum time the over temperature condition exists before the output responds Isolation e Common Mode 10V ac or V dc Input to analog common e Input to Input 10V ac or V dc e Input to Frame Ground 500V ac or V dc ACK Input Function alarm acknowledge Type digital input Activation edge triggered on to off transition Filter 20 milliseconds Maximum time to reset relays 3 5 secon
9. ature Trip Temperature Trip v e 2 v e 3 Point Point Point Point 103 C 217 F B 101 C 214 F B 100 C 212 F C 212 F 501 C 934 F B 151 C 304 F D fa02 c 576 F D 202 C 396 F C 392 F 708 C 1 306 F 700 C 1 292 F p E E E F i ak aj Oloo ojo es n N e e c mimijoc c i ce ce Mm c2 215 C 419 F 403 C 756 F 251 C 484 F C 486 F 800 C 1 472 F 810 C 1 490 F 384 C 723 F E C 1 657 F 902 C 1 656 F F PF C 1 8307 1 830 F 1 005 C 1 841 F bs Cc Mm O co ce 79 C2 a 302 C 576 F mn co ce ow c5 324 C 615 F F 502 C 936 F C 577 F 404 C 759 F G 600 C 1 112 F G 350 C 662 F G C 667 F co Cc co c5 0 co ceo co c3 478 C 892 F H 702 C 1 296 F H 402 C 756 F H 401 C 754 F 584 C 1 083 F 801 C 1 474 F 1 450 C 842 F l 708 C 1 306 F J 502 C 936 F J C 939 F F 824 C 1 515 F K K Thermostat x oa gt e c a oo ae c5 C 851 F 554 C 1 027 F K 556 C 1 033 F G H i 570 F K 11 404 C 2 Gcr L 6030 0117F 899 F M 704 C 1 299 F yy 701 C 1 294 F E L porto pane N G 1 100 C 2 012 F H 1 110 C 2 030 F 206 C F 306 C F J C oF i 653 C 1 207 F pm 651 C 1 204 F 1 387 F 1 485 F C 1 564 F C
10. ds Maximum time signal should be held high 5 seconds Isolation optical Voltage and current 5 to 30V dc 2 mA 5V dc 19 mA Q 30V dc Impedance 1 5 KQ res Nl s RN NO Naat Trip Point Accuracy Ambient 0 to 60 C 32 to 140 F 0 5 of trip point and 4 C 7 2 F 0 5 of trip point and 5 C 9 F TST Input Function test Type digital input Activation level triggered signal high Filter must be active for 1 second for valid simulation Maximum time signal should be held high 5 seconds Isolation optical Voltage and current 5 to 30V dc 2 mA 5V dc 19 mA Q 30V dc Impedance 1 5 kQ Electromechanical Alarm Relays Contact arrangement open in power off condition Contact action latch open in alarm condition Maximum contact rating 1 A 30V dc Indicator Lights Alarm status 8 red Power 1 green Dimensions Length 236 mm 9 30 in Width 92 mm 3 61 in Depth 48 mm 1 87 in DIN rail mount add 20 mm 0 75 in to depth Power Requirements Nominal voltage 12 to 24V dc Absolute voltage 10 to 27V dc Power 3 2 watts Requires Class 2 power supply Terminal Blocks Type Removable Torque 0 33 to 0 35 Nm 2 9 to 3 1 in Ibs Wire Gauge 26 to 18 AWG Environmental Operating ambient temperature 0 to 60 C 32 to 140 F Storage ambient temperature 20 to 100 C 4 to 212 F Relative humidity 0 to 95 non condensing Agency Approvals Compliance
11. e a TLM 8 monitors tempera tures and provides independent safety shutdown alarm annunciation and acknowledgment A multi loop con troller CLS200 or MLS300 is used for primary control The TLM 8 has its own set of thermocouples to monitor temperatures independent of the controller If a tem perature exceeds a trip point configured in the TLM 8 then power to the heater is turned off by a TLM 8 controlled relay and the System OK indicator light is turned off After the temperature drops and the cause of the alarm has been corrected an operator acknowl edges the alarm The primary controller resumes con trol of the loop s CLS MLS Multi Loop thermocouples Temperature Controller DC Power Supply Ea TTL TLM 8 Thermal Limit Monitor Nes System OK ACK TT ogro ANA indicator light relay coil relay contacts normally open Solid state Relay 1 ir DC Power Supply Example Schematic NOTE Relay contacts are illustrated in the unpowered or alarmed state WATLOW TLM 8 User s Guide Declaration of Conformity CE Series TLM 8 Watlow Winona Inc 1241 Bundy Blvd Winona MN 55987 USA Declares that the following product Designation Series TLM 8 Model Numbers TLM C E or P 0 6 0 or 1 0 9 additional letters or numbers indicating setpoint tempera tures Classification Temperature control Installation Categ
12. erature exceeds its trip point both the global alarm relay and the corresponding channel alarm relay open All alarms are acknowledged with the ACK input An external device provides the logic signal to the ACK input The ACK input activates on the trailing edge of the input signal The input must be high for at least 20 milliseconds when the input signal transitions to low alarms are acknowledged Allow up to 3 5 seconds after acknowledging the alarms for the relays to close Acknowledging alarms before the temperature drops below the trip point or before a failed sensor is repaired will have no effect Wait until the tempera ture drops below the trip point before acknowledging alarms When the alarms are successfully acknowl edged the alarm indicator lights turn off and the alarm relay contacts close Reading the Indicator Lights The alarm status of each channel is indicated by the red indicator lights adjacent to the sensor input ter minal block A channel indicator light turns on when the associated channel goes into alarm If the TLM 8 is configured with channel relays this indicator light reflects the status of the associated channel relay The indicator light will remain on until the acknowledge input ACK is activated after the temperature drops below the trip point The green power light indicates the TLM 8 has power 4 O Indicator Lights 8 2 zl E Channel 1
13. isted ratings WATLOW TLM 8 User s Guide Mounting the TLM 8 The TLM 8 mounts directly to a panel or on a DIN rail depending on the mounting style ordered DIN Rail Mounting The TLM 8 simply snaps onto a standard 35 mm DIN rail Place the hook side of the mounting mechanisms over one of the DIN rail edges and snap the assembly over the other edge DIN Rail Removal Remove the TLM 8 from the DIN rail by placing a flat blade screw driver through the slot in the end plate hook the blade into the snap latch and pry the snap latch away from the DIN rail edge Repeat for the other side 92 mm 3 61 in 48 mm 1 87 in DI DL 20 mm 0 75 in End View 236 mm 9 30 in Side View 9mm 203 mm 8 0 in 0 37 in t 8mm O O 0 30 in 76 mm 3 in O Gi 4 mm 0 17 in Mounting Hole Dimensions Panel Mounting The four mounting holes will accommodate up to 3 8 mm 6 screws or bolts Wiring Recommendations TB5 Sensor Inputs Terminals TB6 Power and Digital Inputs ome T Test Pw 5 il Positive Terminals e Negative ome pentung Channel 1 I Channel 2 ID Q Sensor gt Q e Inputs B e D i 0 O Channel 7 l jo Channel 8 T EAR MS TST 5 e ACK Isolated I BRNS Power DC Power X X el z supply L E MEN Test and Acknowledge Circuits In
14. n Oficina 24 28830 San Fernando de Henares Madrid Spain Tel 34 91 675 1292 Fax 34 91 648 7380 Email info watlow es Website www watlow es Watlow Storgatan 24 302 43 Halmstad Sweden Tel 46 0 35 27 11 66 Fax 46 0 35 27 11 67 Email info watlow se Website www watlow se Watlow UK Ltd Linby Industrial Estate Linby Nottingham NG15 8AA United Kingdom Telephone 0 115 964 0777 Fax 0 115 964 0071 Email info watlow co uk Website www watlow co uk From outside The United Kingdom Tel 44 115 964 0777 Fax 44 115 964 0071 Asia and Pacific Watlow Singapore Pte Ltd 16 Ayer Rajah Crescent 06 03 04 Singapore 139965 Tel 65 6773 9488 Fax 65 6778 0323 Email info watlow com sg Website www watlow com sg Watlow Australia Pty Ltd 4 57 Sharps Road Tullamarine VIC 3043 Australia Tel 61 3 9335 6449 Fax 61 3 9330 3566 Website www watlow com DLA ME BF BHR C ERE ABE i HBAS LYE EORR RT EX SH ILO B DX LER 155572722 AB 4g 201203 FIG 86 21 5080 0902 4 amp E 86 21 5080 0906 Bf B8 info watlow cn Website www watlow cn Watlow Electric Manufacturing Shanghai Company 115 22 572nd Lane Bibo Road Zhangjiang High Tech Park Shanghai PRC 201203 People s Republic of China Tel 86 21 5080 0902 Email info watlow cn J KO VrNVRAAA T 101 0047 RRE FRAKA 8 EH 1 14 4 FUE E L Bl Sg 9 Pi Tel 03 3518 6630 Email infoj watlow com
15. ng the unit s case but the current version does not require the case to be earth grounded NOTE Alarm outputs and indicators are latched until the condition is corrected and the alarm is acknowledged as long as the TLM 8 remains powered If power is cycled to the unit it will evaluate the limits again WATLOW TLM 8 User s Guide Using the TLM 8 Sensor Types Sensor types for the TLM 8 are factory configured the type of sensor for your TLM 8 is marked on the label Trip Points Your TLM 8 has been factory configured with trip points per your specification Accuracy of a trip point is 5 for TLM 8s with model numbers starting with TLME For example 5 of a 200 C trip point is 10 So a 200 C trip point would trigger between 190 and 210 C Reading Trip Points The trip points for TLM 8s with model numbers start ing with TLME are encoded in the part number To determine trip points from a part number see the sec tion TLM 8 Part Numbers The trip points for TLM 8s with model numbers starting with TLMC are listed on the label Alarms and Acknowledgment When the TLM 8 is powered and there is no alarm the alarm relay contacts are held closed When a chan nel s temperature exceeds the trip point or the sensor fails that channel s indicator light is illuminated and the global alarm relay contacts open When the TLM 8 is configured with the eight optional channel alarm relays and a channel s temp
16. ory Il Pollution degree 2 Rated Voltage and Power Control 12 to 24 V dc 400 mA maximum Note Use of external CE approved ELV UL Class 2 power supply required mE the essential requirements of the following European Union Directives by using the relevant standards show below to indicate compliance 2004 108 EC Electromagnetic Compatibility Directive EN 61326 1997 A1 1998 Electrical equipment for measurement control and laboratory use EMC A2 2002 requirements Industrial Immunity Class B Emissions A3 2004 EN 61000 4 2 1995 A2 2001 Electrostatic Discharge Immunity EN 61000 4 3 2002 EN 61000 4 4 2004 Radiated Field Immunity Electrical Fast Transient Burst Immunity EN 61000 4 5 1995 A2 2001 Surge Immunity EN 61000 4 6 1996 A3 2005 Conducted Immunity EN 61000 4 11 2004 Voltage Dips Short Interruptions and Voltage Variations Immunity EN 61000 3 2 2001 ED 2 Harmonic Current Emissions EN 61000 3 3 1995 A2 2002 Voltage Fluctuations and Flicker 73 23 EEC Low Voltage Directive EN 61010 1 2001 Safety Requirements of electrical equipment for measurement control and laboratory use Part 1 General requirements f2 2002 96 EC WEEE Directive Equipment Requires Recycling Raymond D Feller Ill Winona Minnesota USA Name of Authorized Representative Place of Issue General Manager August 2007 Title of Authorized Representative Date of Issue KS othe Signature of Authorized Representative Declar
17. put Wiring DC Power Supply The TLM 8 accepts 12 to 24V dc power input from a class 2 power supply Test Input The test input TST is a level triggered digital input It is activated after the input signal is applied for at least 1 second filter The input signal may be generated by a contact closure or controller output The input accepts a 5 to 30V dc signal The circuit contains a resistor and optical isolator l User Supplied TLM 8 Internal Circuit Contact P TST Test Input WATLOW TLM 8 User s Guide Acknowledge Input The acknowledge input ACK is an edge triggered digi tal input The input accepts a 5 to 30V dc signal The circuit contains a resistor and optical isolator If you are using a push button to generate the input sig nal momentary contacts are recommended because the input is edge triggered l User Supplied Contact TLM 8 Internal Circuit A ACK Acknowledge Input Thermocouple and RTD Inputs Be sure to use the type of sensor that matches your TLM 8 the input type is noted on the label Thermostatic Switch Inputs When using thermostatic switch thermostat inputs TLM 8 trip points can be set externally The TLM 8 should be configured for thermostatic switches Use normally closed thermostats that open at or above the trip point Unused Inputs If a sensor input is not used short the positive and negative input terminals TB1 Channel Relay Outputs
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