Digital Heater Element Burnout Detector K8AC-H
Contents
1. 6 4 Tag 97 i 30 dia 86 52 dD CD 10f 0 go 4 10 0 Od i 1 8 4d H 76 5 9 20 Digital Heater Element Burnout Detector K8AC H E Recommended Tools Recommended Flat blade Screwdriver Manufacturer Phoenix Contact Model number SZS0 4 x 2 5 Crimper for Bar Terminals Crimping Tool Manufacturer Phoenix Contact Model number CRIMPFOX UD6 Recommended power line diameters AWG10 to AWG24 Precautions omnon E Recommended Crimp Terminals Recommended crimp terminals M3 crimp terminals Width 5 8 mm max AWG16 to AWG18 C 5 8 nm max Tc D l 5 8 mm max Z t M2 bar terminals Al 0 34 8TQ Phoenix AWG22 Contact M2 bar terminals Al 0 5 8WH Phoenix AWG20 Contact M2 bar terminals Al 0 75 8GY Phoenix AWG18 Contact M2 bar terminals Al 1 8RD Phoenix Contact AWG18 Note Securely tighten the terminal screws to the following torque Power supply terminals 0 5 N m I O terminals 0 23 N m Precautions for Safe Use The following precautions are essential to ensure safety Always heed these precautions 1 Do not use or store the Product in the following locations Outdoors or in locations subject to direct sunlight wind or rain Locations subject to dust metal powder or corrosive gases in particu2. Correct Usage e Tempar Always take the control power supply from the primary oe o l Cie a aed side of the SSR Use temperature controllers with a 12 or 24 VDC voltage Gy output 30 VDC max cui CT1 and CT2 are special products Use the KBAC CT as The CTs do not have polarity CT2 Connect only one CT for single phase heaters Connect two CTs for three phase heaters For three phase heaters always set the burnout alarm set values for both CT1 and CT2 Heater Wiring Method When Using the K8AC H with Contactor Control Heaters Power supply Operation Description f the heater current detected at either CT1 or CT2 falls RS 485 communications below the burnout alarm set value an alarm is output The burnout alarm set value can be set separately for CT1 and CT2 No burnout alarm is output however when the temperature controller control output is OFF Burnouts are detected only while the temperature For transistor output controller control output is being input to the gate input scere ees terminals 11 and 12 Faulty outputs do not occur because heater burnout detection is linked with the temperature controller The minimum burnout detection time is 200 ms Shorter burnouts are not detected Turn ON the voltage fluctuation compensation function default OFF to detect power supply voltage fluctuations Oe alee a and automatically adjust the burnout alarm l
3. Power ON Press the To TEST Mode Press the key for at least 1 s C and gj Press the gt When the 2 key is pressed for at least one second in RUN mode NV I Z 7 keys key for at least 1 s the mode will be switched to TEST mode To return to RUN mode j P H RUN mode TEST mode from TEST mode press the gt key for at least one second 2z Press the gt 77 vw N ie the key for at least 1 s To SET Mode Password Input released Press the _ key iir dm M NA for at least 1 s A special operation is required to move to the SET mode 5s ie elena Use the following procedure Protection s T 3 A Procedure tti d s Somnus mor ee epee E mp ee 4 o gt A Move to the ADJ mode and use the zi key to keys for at at least 1s 71 VN P005 5 display the parameter for moving to the SET mode least 1 s Hold down for at m ADJ mode least another 2 s The parameter characters are Anau gt ri P th k iS Li B Press the key to display the set value for at least 1s Password 0169 password SET mode YL2 3 3 gt VLL C Press the key again to enable changing Lf E LOL the password To ADJ Mode ey When the _ key is pressed for one second in RUN mode the 7 XJA _s1 4 mem e A A z i AJ x4 gt segment display will begin to flash If the key is held down for another JE n i5 D Use A e and 2 keys toset thie A xz i a password T
4. OOOOOO ABAH E Optional Parts Order Separately Current Transformer K8AC CT20S 1 2dia 2 8 5 5 AE 7 i H qi 25 ii I 10 5 a SEP E m 21 2 5 Two 3 5 dia Digital Heater Element Burnout Detector K8AC H 19 omnon Current Transformer K8AC CT20L 7C r 397 Accessories with KBAC CT20L Connection Example f 9 f Contact Contact SE Plug ce AX M Lt Approx 3 dia N S ae b 12 dik Lei i 40 Las Two M3 Plug Depth 4 min i Hot Approx 6 dia 1 T D o i 15 rit i I 22 15 30 Current Transformer K8AC CT200 Pre wired Leads 30 5 100 E CA 40 K8AC CT200 i2 dia eme 40 Lis Two M3 Depth 4 max bod y t F i i 15 A i i 5 30 Current Transformer K8AC CT200L 9 39 3 1 74 gt re e 4 T T GEO bs Four M4 x 6 screws 20 a 47 Mounting Hole Dimensions LRR 5 hast Im imu Two M5 screw holes f OmRON or two 5 5 dia holes 34 5 FN ais N
5. Parameter name Power Save Mode Standby Time Description Sets the time to enter power save mode Parameter omnon Setting range Default 10 to 300 s Display Mode Sets a 7 segment NORM full span comparison CMP or bar BAR display NORM CMP BAR Display Refresh Time Sets the refresh time for the display 0 2 s 0 5 s 1 05 FAST Unit Number Sets the unit number for RS 485 communications 0 to 64 Baud Rate Sets the baud rate for RS 485 communications 1200 2400 4800 9600 19200 Data Length Sets the data length for RS 485 communications 7 8 Stop Bits Sets the number of stop bits for RS 485 communications 1 2 Parity Bit Sets the parity for RS 485 communications EVEN ODD NONE Gate OFF output hold time See note 2 Sets the time from when the gate signal goes OFF until the burnout alarm output turns OFF Oto 999 s Operation gate current level See note 1 Note 1 Displayed by the K8AC HLILIP 2 Displayed by the KBAC HLILIC Dimensions FLK FLK Sets the gate current value that stops an alarm detection or output This setting is only valid when phase control is selected as the heater control method 7 0 to 20 0 mA Note All units are in millimeters unless otherwise indicated E Digital Heater Element Burnout Detectors K8AC H OOOOOOOO
6. SSR open circuit A SSR SSR open circuit indicator lit detected when heater current cannot be detected with temperature control gate output ON Processing Display Display i Function value name characters range 0100 to 2300 This is the CT1 heater See notes 1 current processing value and 2 Alarm operations such as the heater burnout alarm are determined based on this processing value 0100 to 2300 This is the CT2 heater See notes 1 current processing value and 2 Alarm operations such as the heater burnout alarm are determined based on this processing value SSR short circuit SSR SSR short circuit indicator lit detected when Note 1 The decimal point position depends on the input type naator ourrant is K8AC HO100 0 100 to 2 300 temperature K8AC HLI2LTEL 1 00 to 23 00 control gate output K8AC HLISLIL 10 0 to 230 0 OFP 2 If the display is below 0100 the bar display will be Heater layer short Hr 5 i ALM CT1 overcurrent shown 1 indicator lit detected Heater layer short H 52 ALM CT2 overcurrent 2 indicator lit detected Note 1 As soon as the cause of an alarm is removed the alarm is reset automatically 2 If multiple alarms occur simultaneously the one with the highest priority is displayed 3 If the mode is changed to ADJ or SET mode while an alarm is in effect the alarm output is reset and t
7. K8AC CT200 20 0 to 200 0A Note When selecting a current transformer ensure that the rated current of the heater does not exceed the rated current of the transformer Surface mounted with screws K8AC CT200L Digital Heater Element Burnout Detector K8AC H omron Specifications E Ratings Power supply voltage 100 to 240 VAC 50 60 Hz See note 2 Operating voltage range 85 to 110 min of the rated power supply voltage 85 to 264 V Power consumption 9 0 VA max at max load at max load Applicable circuits Single phase or three phase with same model Applicable control methods Contactor ON OFF control e g temperature controller with relay output SSR control e g temperature controller with voltage output Cyclic control and phase control e g temperature controller with current output Current measurement Current measurement via two special CTs Burnout alarm set value can be set separately for each CT Special CT models See note 3 Current input range Applicable models K8AC CT20S 0 200 to 2 200 A K8AC CT20L 2 00 to 22 00 A K8AC CT200 20 0 to 200 0 A K8AC CT200L 20 0 to 200 0 A Measurement method Instantaneous measurement using root mean square values Gate input Contactor ON OFF Voltage 12 24 VDC continuous input possible to 30 VDC signal control Input impedance 4 kQ min See note 1 z
8. Confidentiality Any intellectual property in the Products is the exclu sive property of Omron Companies and Buyer shall not attempt to duplicate it in any way without the written permission of Omron Notwithstanding any charges to Buyer for engineering or tooling all engineering and tooling shall remain the exclusive property of Omron All information and materials supplied by Omron to Buyer relating to the Products are confidential and proprietary and Buyer shall limit distribution thereof to its trusted employees and strictly prevent disclosure to any third party Export Controls Buyer shall comply with all applicable laws regulations and licenses regarding i export of products or information iii sale of products to forbidden or other proscribed persons and ii disclosure to non citizens of regulated technology or information Miscellaneous a Waiver No failure or delay by Omron in exercising any right and no course of dealing between Buyer and Omron shall operate as a waiver of rights by Omron b Assignment Buyer may not assign its rights hereunder without Omron s written consent c Law These Terms are governed by the law of the jurisdiction of the home office of the Omron company from which Buyer is purchasing the Products without regard to conflict of law princi ples d Amendment These Terms constitute the entire agreement between Buyer and Omron relating to the Products and no provision may be changed o
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10. 3 A output hold time ce Note 1 Displayed when the Selectable Protection Level parameter is set to 0 Displayed by the K8AC H P FLK If more than five minutes elapses with no operations performed in Protection Settings mode ADJ mode SET mode or for a measurement parameter the status will return automatically to the processing value display If this occurs while settings are in progress it may cause unintended operations to be performed in the processing value display Be careful not to allow this to happen Displayed by the KBAC H C FLK Digital Heater Element Burnout Detector K8AC H 17 E Parameter Defaults and Descriptions Note Item Mode Protection Shaded parameters must always be set regardless of the measurement method Parameter name Selectable Protection Level Description Restrict access to Adjust Mode ADJ and or Setting Mode SET from RUN mode 0 Access enabled to both ADJ and SET 1 Access enabled to ADJ and disabled to SET 2 Access disabled to both ADJ and SET Parameter omnon Setting range Default Setting Value Change Prohibition Prohibits changes to set values ON OFF Burnout Alarm K8AC HL11 Value 1 K8AC HL12 K8AC HLIS Sets the output operation value for the burnout alarm Note The burnout alarm function can be disabled by setting the set value to 0 200
11. SSR control ON voltage 9 6 VDC max OFF voltage 1 VDC min Minimum voltage pulse ON time for burnout detection 200 ms min Cyclic and phase 4 to 20 mA DC Burnout detection is possible for an input of 7 mA or greater control Input impedance 50 Q max Output ON delay 0 0 to 99 9 s operating time Soft start time 0 0 to 99 9 s Used when using a soft start function in the power regulator Output Relay contact One SPDT relay contact output output Same output used for heater burnout alarms overcurrent alarms SSR short circuit alarms and SSR open K8AC H C FLK circuit alarms 0 3 A at 125 VAC resistive load 1 A at 30 VDC resistive load Max switching capacity 37 5 VA 30 W Mechanical durability 50 million operations min electrical durability 100 000 operations min Transistor output Two NPN open collector outputs K8AC H T FLK One ALM output Outputs heater burnout alarms and overcurrent alarms One SSR error output Outputs SSR short circuit and open circuit alarms 12 to 24 VDC 50 mA max OFF leakage current 100 uA max ON residual voltage 1 5 V max Communications RS 485 1200 2400 4800 9600 19200 bps CompoWay F Indication method 7 segment digital display No of display digits 4 red LED status indicators RUN green ADJ orange SET orange GATE orange SSR orange and ALM orange Main functions Heater burnout alarms overcurrent alarms SSR short circuit alarms SSR open circuit alarms voltage
12. Set Value Setting Method Set the K8AC H burnout alarm set value based on the results The burnout alarm set value is set at the mid point between the normal Setting Method current and the current at malfunction taking errors and variations in heater capacity into consideration n this setting example the set value for AL 2 CT2 burnout alarm setting is the same as the set value for AL 1 See note 2 Wire the K8AC H temperature controller 4 to 20 mA current output type and power regulator phase control Press the Key on the K8AC H for at least 3 s to change from RUN mode to ADJ mode Note 1 The K8AC H automatically adjusts burnout alarm setting AL 1 CT1 burnout alarm set value will be displayed when the levels to compensate based on the temperature controller mode is changed to ADJ mode Press the gt key once when AL 1 current output The burnout alarm setValus must be set is displayed Next press the A Key once The present heater when the temperature controller output is at 100 20 mA current value will be displayed on the main display so note this as so be sure to have the temperature controller at 20 mA the normal current value Always have the temperature controller output output at 20 0 mA at this time See note 1 2 If the heater capacity is unbalanced the CT1 and CT2 burnout alarm levels may not be at the same value Next disconnect one heater and note t
13. fluctuation compensation output ON delay timer energy saving mode key protection and power supply voltage measurement Memory protection Non volatile memory No of writes 100 000 Ambient operating temperature 10 to 55 C with no icing or condensation Ambient operating humidity 25 to 85 with no condensation Storage temperature 25 to 65 C with no icing or condensation Note 1 The gate input enables correct measurement by syncing to heater control When using it with contactor ON OFF control receive the relay contact output from the temperature controller or other controller with an auxiliary relay and then use this signal as the gate input signal to the K8AC H The gate function can also be disabled If it is disabled the gate input can be used as a normal undercurrent overcurrent relay 2 When using the K8AC H for a 380 to 480 V AC power supply circuit use a step down transformer Contact your OMRON representative for information on transformers 3 Order the CTs separately 4 Digital Heater Element Burnout Detector K8AC H omron Connections E Terminal Arrangement Current inputs Gate input Communications Terminals Description Applicable H8AC H1LICL H8AC H10PO models Voli l
14. heater imbalances so conduct an actual test for confirmation before making adjustments if the current change ratio between normal and abnormal operation is slight 4 Consult with your OMRON representative if multiple heaters are used with different heater capacities Operation B Main K8AC H Functions The K8AC H is a digital heater burnout detector that detects heater Phase Control Applicable to 4 to 20 mA Current output burnout by measuring the heater current from various power supply temperature controllers systems The K8AC H provides the following functions Applicable Heater Control Methods The following heater control methods can be used ON OFF Control Contactor SSR HH ae es current and an alarm is output accordingly FON OFF Current 1 to 99 s Half cycle Set value Cyclic Control NANN MA ARAN 500 ms m 100 ms ON OFF o 02s Alarm Transistor output models ALM indicator lit ALM transistor output Relay output models ALM indicator lit OR of all detection status output Digital Heater Element Burnout Detector K8AC H 9 Error Detection The following errors are detected according to status Heater layer short errors are detected overcurrent detection The preset overcurrent detection set value is compared with the heater current and an alarm is output accordingly Set value Current Alarm I Transistor
15. i Power save 5 3s min Ne A moda n N LI A E 7 t Is i l Gate input function PS E Dx Power save Heater 1 current J mode standby E an i 2 e time E fa ge Voltage fluctuation d 5 Dx d E compensation Displ d l Heater 2 current amp Spay moge ce F TEST mode te UE TEST mode CE L 5 L 2 5 E E Startup lock time as es psi Heater 2 input shift Power supply L E 5 L se refresh time gg display current Ss voltage E E n dL H ce E ree 4 An alarm is output if Hn L 5 LOC 7 H I the test value falls l Output ON delay woe below the burnout i Heater 1 input shift Heater 1 4 J alarm value 1 setting co Unit number s min b display current seximum current 5 E Lt L x E LA ALI i l Soft startup time a P 5 RUN time Heater 1 i 2 l Baud rate minimum curren E cg ce 55Ht alps SSR short circuit l n E na A d e l detection E a See note 2 t Processing value Heater 2 GATE mode ee Data length for alarm output maximum current 5 p ce ce arr ze r Im SSR open circuit 5 h L Iu HC n E nen e l detection Timber of being Alarm or detection is MS alarm outputs minimum current L ce ce stopped if the gate H r 5 t se Um current value falls m t H n n 5 Dr A 5 below the set value l Heater layer short rr Minimum power M xiitunt power gg delection l Parity bit supply voltage cs PROoHUsuge H RL c r S te 4 Heater layer short HE H Iu ee no t 5 alarm set value eel ce Gate OFF V Cuni See note
16. output models ALM indicator lit ALM transistor output Relay output models ALM indicator lit OR of all detection status output SSR Short Circuit Detection If current is measured when there is no gate input an SSR short circuit error is detected and an alarm is output seppeces Wel eat d Current measurement Alarm Transistor output models SSR indicator lit SSR transistor output Relay output models SSR indicator lit OR of all detection status output SSR Open Circuit Detection If current is not measured during gate input an SSR open circuit error is detected and an alarm is output een al LJ LJ Lj ES LJ i Current measurement Alarm ee ne Transistor output models SSR indicator lit SSR transistor output Relay output models SSR indicator lit OR of all detection status output Voltage Fluctuation Compensation The voltage fluctuation compensation function automatically adjusts the burnout alarm operation level of the KBAC H depending on voltage fluctuations in the heater circuit The operating value for burnout detection when multiple heaters are connected is set very close to the normal value Thus a false burnout alarm output will occur if there is a voltage drop in the heater circuit The voltage fluctuation compensation function prevents this type of false output Example Voltage Drop from 100 V to 95 V in the Heater Circuit Conditions Voltage fluctuation compensation standard
17. to 2 200 A 2 00 to 22 00 A 20 0 to 200 0 A Burnout Alarm K8AC HL11 Value 2 K8AC HLI2 K8AC HLIS Sets the output operation value for the burnout alarm Note The burnout alarm function can be disabled by setting the set value to 0 200 to 2 200 A 2 00 to 22 00 A 20 0 to 200 0 A Voltage Fluctuation Compensation Standard Value Sets the standard voltage used by the voltage fluctuation compensation function The fluctuation compensation function operates in respect to this set value 100 to 240 VAC 18 All Initialization Returns all set values and measurement values to their default settings ON OFF Set Value Initialization Returns all set values to their default settings ON OFF Processing Value Initialization Returns all measurement values to their default settings ON OFF Alarm Hysteresis 1 Sets hysteresis for the alarm output value for burnout detection undercurrent and heater layer shorts overcurrent for CT1 1 to 999 Alarm Hysteresis 2 Sets hysteresis for the alarm output value for burnout detection undercurrent and heater layer shorts overcurrent for CT2 1 to 999 Gate Input Function Turns the gate input function ON and OFF If the gate input is turned OFF application as a simple ammeter is possible ON OFF Voltage Fluctuation Compensation Turns the voltage fluctuation c
18. to 240 VAC 2 Digital Heater Element Burnout Detector K8AC H Ordering Information Digital Heater Element Burnout Detectors Heater control method Contactor control SSR control Input specifications Two current inputs single three phase Phase control cyclic control Output specifications One relay output RS 485 Current input range 0 200 to 2 200 A omnon K8AC H11CC FLK 2 00 to 22 00 A K8AC H12CC FLK 20 0 to 200 0A K8AC H13CC FLK Two transistor outputs RS 485 0 200 to 2 200 A K8AC H11CT FLK 2 00 to 22 00 A K8AC H12CT FLK 20 0 to 200 0A K8AC H13CT FLK One relay output RS 485 0 200 to 2 200 A K8AC H11PC FLK 2 00 to 22 00 A K8AC H12PC FLK 20 0 to 200 0 A K8AC H13PC FLK Two transistor outputs RS 485 0 200 to 2 200 A K8AC H11PT FLK 2 00 to 22 00 A K8AC H12PT FLK 20 0 to 200 0 A K8AC H13PT FLK Note Consult with your OMRON representative if multiple heaters are connected in parallel with different heater capacities or if a heater with varying heater resistance is used E Optional Products Sold Separately Current Transformers Rated current 0 200 to 22 00 A Through hole diameter Installation method Surface mounted with screws K8AC CT20S Binding band Rear surface mounted with screws K8AC CT20L 20 0 to 200 0A Binding band Rear surface mounted with screws
19. value is not to be changed press the ce key while in monitor status to switch to the next Note parameter If a set value is out of range either too high or C Press the D gt key again while in monitor status to too low the maximum or enable the changing set value minimum value will automatically be set For models with a current input of 0 200 to 2 200 A for D Use the gt A and M keys to change the set example the maximum value value is 2 200 and the minimum value is 0 200 The place where the set value can be changed will begin to flash E Press the ce key to save the changed set value in internal memory and switch to the next parameter Changed set values will not be saved in memory if the mode is changed by another key operation without first pressing the Co key Monitor status Change status gt gt 2000 Ig amr Lt LL N co f Use the 2 Al and za r Ig keys to change the set value To next parameter 16 Digital Heater Element Burnout Detector K8AC H B Parameter List The setting items in each mode are called parameters Parameters can be switched by using the kel key 1S te 3 Protection Settings mode ee omnon ASPE co PEPE ce l Selectable protection leve
20. A so the current range 20 0 to 200 0 A should be selected Phase control is used so type P should be selected Type P is also selected for cyclic control Select the appropriate relay or transistor output specifications depending on the application K8AC H Parameter Settings Procedure Only the minimum settings are shown here Refer to pages 16 to 19 for information on how to set parameters 1 Turn ON the power to the K8AC H The initial status when power is turned ON is called RUN mode 2 Press the _ Key for at least 3 s to change from RUN mode to ADJ mode the mode for adjusting burnout alarm set values 3 Change from ADJ mode to SET mode the default settings mode for all functions The password 0169 is required to move to SET mode 4 Set the heater control method parameter to PH 3 three phase control The default setting is PH 1 single phase control Note Set the parameter to CYCL cyclic control when using cyclic control 5 Press the Key for at least 1 s to change from SET mode to ADJ mode Press the _ Key again for at least 1 s to change from ADJ mode to RUN mode Note The default setting for functions including the voltage fluctuation compensation function hysteresis output ON delay time and SSR error detection function is OFF Turn ON any of these functions as required Digital Heater Element Burnout Detector KBAC H 13 omnon Burnout Alarm
21. K8AC H omnon Digital Heater Element Burnout Detector A high precision Heater Element Burnout Detector compatible with a wide range of heater control methods Compatible with contactor SSR cyclic control and phase control methods Compatible with a wide range of heater capacities from 0 200 to 200 0 A AC range covered by 3 models Voltage fluctuation compensation function enables accurate heater burnout detection because power supply voltage fluctuations resulting in heater current fluctuation will not cause faulty outputs Detects burnouts for even one heater when using multiple heaters f the gate function is disabled the gate input can be used as an undercurrent overcurrent relay or for motor or lamp loads 2 circuits CE Marking Contributes to preventative maintenance for heater burnout Note Consult with your OMRON representative before using phase and cyclic control under the following conditions Using multiple heaters with different heater capacities Using heaters with varying heater resistance e g halogen heaters Features Ce Compatible with Many Heater Control Methods The K8AC H detects burnouts for cyclic and phase control heaters which could not be detected by the K2CU One Digital Heater Element Burnout Detector can handle single phase or three phase heaters Type Item ON OFF control Cyclic Phase connector SSR control control K8AC H IL C FLK
22. K8AC HL IL PE FLK Single phase heater Oo Oo O O Three phase heater O O O O Applicable to Wide Current Range Current can be measured between 0 200 and 200 0 A using an external current transformer K8AC H11 K8AC H12 K8AC H13 Item Current ny e to 2 200A 2 00to 22 00A 20 0 to 200 0 A AC AC measurement range A Appropriate Current KSAC CT20S K8AC CT20S K8AC CT20L K8AC CT200 Transformer model K8AC CT20L K8AC CT200L Monitors Heater Current The heater current can be checked on the main display Error status such as that for heater burnout alarms can also be displayed on the character display Measurement values Heater current Power supply voltage Error display Heater burnout detection Overcurrent detection SSR short circuit detection SSR open circuit detection Bor cri Voltage Fluctuation Compensation Function The voltage fluctuation compensation function enables accurate heater burnout detection because power supply voltage fluctuations resulting in heater current fluctuation will not cause faulty outputs This function is required when detecting minor current fluctuations High precision Heater Burnout Detection Digital settings enable high precision heater burnout detection High precision threshold value setting is possible using current measurement value
23. RS 485 communications For transistor outputs dos CT1 Power 4 to 20 mA current output Temperature Regulator O Controller C CT2 Heater See note ex Note Consult with your OMRON representative if multiple heaters are connected in parallel different heater capacities or if a heater with varying heater resistance is used Operation Description f the heater current detected at either CT1 or CT2 falls below the burnout alarm set value an alarm is output The burnout alarm set value can be set separately for CT1 and CT2 No burnout alarm is output however when the temperature controller control output is OFF Burnouts are detected only while the temperature controller control output is being input to the gate input terminals 11 and 12 Burnout is detected with no errors because the automatic adjustment of burnout alarm level is linked to the temperature controller control output 4 to 20 mA Burnout is detected when control outputs from the temperature controller are 7 mA min Correct Usage Always take the control power supply from the primary side of the Power Controller Use a temperature controller with a 4 to 20 mA current output Always adjust the burnout alarm set value when the temperature controller s control output is at 10096 20 mA The value at 100 output is used as a reference for adjusting bur
24. Without a voltage fluctuation compensation function voltage fluctuations cause unnecessary operation The K2CU has a narrow rated current range and cannot detect minute current fluctuations when multiple heaters are detected due to the low resolution Differences from Other Current Heater Element Burnout Detection Functions Classification Heater Element Tempera Power ture con regula tor thy ristor Burnout Detector troller Item K8AC H K2CU Heater Single burnout phase heater detection Three phase heater Contactor control heater SSR control heater Phase control heater Cyclic control heater Voltage fluctuation compensation function SSR short circuit detection function Overcurrent detection function Can detect with high precision O Candetect x Cannot detect E Model Number Legend K8AC H1 FLK 100 240VAC 1 2345 6 7 1 Basic Model K8AC H Digital Heater Element Burnout Detector 2 Product Type 1 Series number 3 Current Input Range 1 0 200 to 2 200 A 2 2 00 to 22 00 A 3 20 0 to 200 0 A 4 Heater Control Type C ON OFF control SSR or contactor P Phase control or cyclic control 5 Output Type C Relay contact output one SPDT relay contact output T Transistor output two NPN open collector outputs 6 Communications Specifications FLK RS 485 7 Power Supply Voltage 100 240VAC 100
25. ages are always refreshed current See note Heater 2 minimum current 0100 to 2300 See note Maximum power supply 0085 to 0264 voltage See note Minimum power supply 0085 to 0264 V voltage See note Number of alarm outputs 0000 to 9999 Outputs This value counts the total number of alarms output for heater burnout SSR open and short circuits and heater overcurrent The count is refreshed each time an alarm is output and it is saved in non volatile memory The value is saved when power is interrupted The number of outputs is not counted for the test function Processing value for 0100 to 2300 This holds the CT1 or CT2 processing value when a heater burnout alarm is output alarm output This is the most recent processing value and it is refreshed each time a heater burnout alarm occurs The value is not saved when power is interrupted 0000 to 9999 This is the total run time value from when power is turned ON or the processing value is reset until an alarm occurs The total time is recorded in non volatile memory approximately once per hour If power is interrupted within the hour however the data since the beginning of the hour is lost and the total starts over from when the time was last saved The total is stopped during heater burnout alarm output When the alarm is cleared the total resumes from the time just before the alarm occurred Heater 1 input shift display lt 999 to 999 This
26. display Digital Heater Element Burnout Detector K8AC H 1 SSR Short Circuit Detection Quickly detects control failures caused by SSR short circuits Useful for preventing shipping of faulty products and for improving productivity Detects Overcurrents in Heater Circuits Detects overcurrents from heater layer shorts and outputs an alarm Useful for preventing SSR deterioration caused by overcurrents RS 485 Communications Measurement data such as the present heater current maximum minimum heater current and power supply voltage can be read using RS 485 communications The current when the heater burned out and the total operating time are recorded in memory and this data can be used for preventative equipment maintenance This data can be checked on the main display CE Marking Compact Unit 35 x 90 x 100 mm W x H x D Problems with Current Heater Element Burnout Detectors K2CU Heater Element Burnout Detectors could not detect burnouts with cyclic or phase control heaters performed unnecessary operations Generally heater burnouts could not be detected even by the heater burnout detection function of power regulators phase control devices when multiple heaters were connected Also burnout detection was not accurate when temperature controller outputs were small Model Number Structure omnon Power voltage fluctuations in the heater circuit caused current fluctuations
27. ent Burnout Detector K8AC H omnon E Rate of Change for Currents with Parallel Heaters The following table shows the current change ratios when multiple heaters of the same capacity are connected in parallel and one of the heater elements burns out Use this table for reference when making corrections If five single phase heaters are connected in parallel the current change when burnout occurs is 20 6 per heater If the current for a single heater is low and the change ratio is very slight it may not be detected Therefore take into account the detection accuracy for the total current when selecting the number of heaters to be connected in parallel Connection Single i With one heater phase n heaters burned out is 0 l Star Current in With one heater connection aE Number of burned out burned out is 0 heaters per phase phase n Current in other 0 87 phases Delta Current in lines connection i near burned out phase Same as 2 phase Current in other phases Number of heaters per phase n Note 1 The figures in the above table show the current change ratios when burnout occurs for one heater connected in parallel 2 The numbers represent the current ratio after one heater burns out with the current prior to the burnout i e the normal current taken as 1 3 In actual operation there may be effects from factors such as load
28. evels to compensate Also turn ON the voltage fluctuation compensation function to detect minor current fluctuations Correct Usage toj Temperature Always take the control power supply from the primary Contactor EM side of the contactor relay output Use a temperature controller with relay output The input to the gate input terminals 11 and 12 must power supply CTi be a DC voltage input so wire the 24 VDC power D supply as shown in the diagram to the left CT2 e CT1 and CT2 are special products Use K8AC CT The CTs do not have polarity Connect only one CT for single phase heaters Connect two CTs for three phase heaters Heater For three phase heaters always set the burnout alarm set values for both CT1 and CT2 6 Digital Heater Element Burnout Detector K8AC H omnon Wiring Method When Using the K8AC H with Cyclic Control Heaters Power supply RS 485 communications MO Tem erature SSR SSR Cyclic 4 to 20 mA current output C e ile M Control Unit Controller D CT1 O CT2 Heater See note Note Consult with your OMRON representative if multiple heaters are connected in parallel different heater capacities or if a heater with varying heater resistance is used For transistor output Ope
29. fications and accessories may be changed at any time based on improvements and other reasons It is our prac tice to change part numbers when published ratings or features are changed or when significant construction changes are made However some specifica tions of the Product may be changed without any notice When in doubt spe cial part numbers may be assigned to fix or establish key specifications for your application Please consult with your Omron s representative at any time to confirm actual specifications of purchased Product Errors and Omissions Information presented by Omron Companies has been checked and is believed to be accurate however no responsibility is assumed for clerical typographical or proofreading errors or omissions omnon Complete Terms and Conditions of Sale for product purchase and use are on Omron s website at www omron247 com under the About Us tab in the Legal Matters section ALL DIMENSIONS SHOWN ARE IN MILLIMETERS To convert millimeters into inches multiply by 0 03937 To convert grams into ounces multiply by 0 03527 OMRON OMRON ELECTRONICS LLC 1 Commerce Drive Schaumburg IL 60173 Tel 847 843 7900 For U S technical support or other inquiries 800 556 6766 OMRON CANADA INC 885 Milner Avenue Toronto Ontario M1B 5V8 Tel 416 286 6465 Cat No N137 E1 02 MEXICO SALES OFFICES Mexico D F 555 660 3144 Ciudad Juarez 656 623 7083 Monterrey
30. he ALM and SSR indicators turn OFF 12 Digital Heater Element Burnout Detector K8AC H omnon E Settings Method Settings Methods for SSR and Contactor Control Heaters Setting Conditions Detecting burnouts in just one heater when ten 300 W rated heaters are connected in parallel to a single phase 200 V power supply The heater is SSR controlled Normal Heater Current and Heater Current with One Heater Element Burnout Normal current 300 W x 10 heaters 200 V 15 0 A Current with one burnout 300 W x 9 200 V 2 18 5 A Heater burnout alarm set value Normal current current at malfunction 15 0413 5 14 3A 2 Selecting Heater Element Burnout Detector Models For the above example K8AC H12CLI FLK would be selected The burnout alarm set value is 14 3 A so the current range 2 00 to 22 00 A should be selected SSR control is used so type C should be selected Type C is also selected for contactor control Select the appropriate relay or transistor output specifications depending on the application K8AC H Parameter Setting Procedure Only the minimum settings are shown here Refer to pages 16 to 19 for information on how to set parameters 1 Turn ON the power to the K8AC H The initial status when power is turned ON is called RUN mode 2 Press the _ Key for at least 3 s to change from RUN mode to ADJ mode the mode for adjusting burnout alarm set values 3 Set the bur
31. he heater current in this burnout state Alternatively use the current when one heater is burned out calculated earlier as the current during malfunction It is recommended that the current at an actual burnout is confirmed E Measurement Monitor Value Display Ranges and Functions Other than measuring the heater current the KBAC H can measure the power supply voltage maximum minimum current maximum minimum voltage and other values The measurement data can be monitored from a host using RS 485 communications The measurement monitor value names display ranges and functions are given in the following table Measurement monitor Display Display range Function value name characters Power supply voltage L 0085 to 0264 This is the K8AC H control power supply voltage When the voltage fluctuation compensation function is enabled the heater burnout determination based on this voltage is automatically compensated Heater 1 maximum 0100 to 2300 These hold the maximum and minimum values for each processing value current See note The maximum and minimum heater currents after the power is turned ON or Heater 1 minimum current 0100 to 2300 after a maximum or minimum reset are displayed See note The values are not saved when power is interrupted The current values are not refreshed when startup lock is in effect and when the Heater 2 maximum 0100 to 2300 gate input is enabled but the gate input is OFF Power supply volt
32. he password is 0169 two seconds the mode will be switched to ADJ mode kho 7I Press the ce key If the password is correct the mode will change to To return to RUN mode from ADJ mode press the _ key for at least one second the SET mode To Protection Settings Mode If the password is incorrect the next parameter will be displayed while still in ADJ mode When the and kel keys are pressed for one second n RUN mode 5 5 5 the 7 segment display will begin to flash If the keys are held down FAG n nnnn i5u for another five seconds the mode will be switched to Protection Eg E Settings mode To return to RUN mode from Protection Settings E mode press and kel keys for at least one second When password When password Next parameter is incorrect is correct in ADJ mode SET mode ll Setting the Parameter The value set for each parameter is called the set value Set values Procedure include both numbers and characters Im c e The status when a set value is displayed is called monitor status and when it can be changed it is called change status Use the following procedure to display and change set values A Press the key while a parameter is displayed to go into monitor status The set value for that parameter will be displayed B If the set
33. hipping Delivery Unless otherwise expressly agreed in writing by Omron a Shipments shall be by a carrier selected by Omron Omron will not drop ship except in break down situations b Such carrier shall act as the agent of Buyer and delivery to such carrier shall constitute delivery to Buyer c All sales and shipments of Products shall be FOB shipping point unless oth erwise stated in writing by Omron at which point title and risk of loss shall pass from Omron to Buyer provided that Omron shall retain a security inter est in the Products until the full purchase price is paid d Delivery and shipping dates are estimates only and e Omron will package Products as it deems proper for protection against nor mal handling and extra charges apply to special conditions Claims Any claim by Buyer against Omron for shortage or damage to the Products occurring before delivery to the carrier must be presented in writing to Omron within 30 days of receipt of shipment and include the original trans portation bill signed by the carrier noting that the carrier received the Products from Omron in the condition claimed Warranties a Exclusive Warranty Omron s exclusive warranty is that the Products will be free from defects in materials and workmanship for a period of twelve months from the date of sale by Omron or such other period expressed in writing by Omron Omron disclaims all other warranties express or implied b Lim
34. i ru P Oo 12 VDG or RP CUTE RS 485 Operating Connect to the operating All models power power supply EN gi AC B supply 0 89 9 9 ORE ORE Outputs Outputs SSR open or short K8AC H1 circuit detection results transistor Outputs heater burnout or outputs O O WHO BHO O overcurrent detection results Outputs an OR of the status K8AC H1LLIC n 29 8 00 8 8 of all alarms relay output Current Connect to CT1 Current All models Outputs inputs input from CT1 secondary Operati I erating power supply HBAC H1LILIT HBAC H1LILIC side output Connect to CT2 Current COM COM input from CT2 secondary 4 5 5 D 5 side output 12 to 24 VDC 125 VAC Gate input Connect to gate signal K8AC H1 DC 50 mA AC 0 2 A 100 to 240 VAC ao VDC voltage pulse Connect to a 4 to 20 mA K8AC H1 gate signal Commu Connect to host device for All models nications RS 485 communications Note 1 Terminals 4 to 6 Alarm output terminals Depend on the output type relay output or transistor outputs 2 Terminals 11 and 12 Gate input terminals Depend on the heater control type contactor SSR control or cyclic phase control E Current Input Circuits CT Inputs Heater Current E Output Circuits Open Collector Outputs Contact Outputs SSR alarm output Re
35. is the shift value for displaying the CT1 heater current measurement set in current measurement parameter CT1 The value is saved when power is interrupted Heater 2 input shift display 999 to 999 This is the shift value for displaying the CT2 heater current measurement set in current measurement parameter CT2 The value is saved when power is interrupted Note Each measurement monitor value can be individually reset Refer to the K8AC H Digital Heater Element Burnout Detector User s Manual Cat No N132 for operating procedures 14 Digital Heater Element Burnout Detector K8AC H E Modes Groups of setting items are called modes The K8AC H has five modes RUN Function This is the normal operating mode used for receiving inputs executing heater burnout outputs etc Operation goes into RUN mode immediately after power is turned ON omnon Alarm operation Executed ADJ This mode is used to change comparatively frequently set parameters such as alarm value settings This also the mode for entering the password to move to the SET mode Stopped SET This mode is used to make the initial settings for the various functions Stopped Protection Settings This mode is used to make settings to prevent unintended key operations The protected modes are not displayed preventing changes to set values Stopped This mode is used to simulate inputs
36. istance fluctuates according to the control level As a result high precision detection of heater burnout is not possible The effect on the heater and setting methods depends on the heater being used Therefore consult with your OMRON representative before using a heater with varying resistance values Halogen Heater Resistance Fluctuation Example In the following example burnout of one element in a six element heater can be detected at a control level of 20 mA but detection is not possible due to the effect of fluctuating resistance if the control level is any lower Heater resistance Three elements burned out One element E burned out 80 Detectable range 60 4Q Threshold z 20 Normal six elements in parallel Control signal l l l l 02 l 4mA 7mA 20 mA Digital Heater Element Burnout Detector K8AC H 11 omron Nomenclature E Nomenclature and Operations D D D D D D D D Main display Displays processing values parameter characters and set values RUN ADJ SET GATE SSR ALM O00000 Operation indicators RUN Mea Lights when the power is turned ON and the i surement measurement operation is in progress operation OFF at all other times agag EE BB Mai
37. itations OMRON MAKES NO WARRANTY OR REPRESENTATION EXPRESS OR IMPLIED ABOUT NON INFRINGEMENT MERCHANTABIL 15 16 ITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE PRODUCTS BUYER ACKNOWLEDGES THAT IT ALONE HAS DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE Omron further disclaims all warranties and responsibility of any type for claims or expenses based on infringement by the Products or oth erwise of any intellectual property right c Buyer Remedy Omron s sole obli gation hereunder shall be at Omron s election to i replace in the form originally shipped with Buyer responsible for labor charges for removal or replacement thereof the non complying Product ii repair the non complying Product or iii repay or credit Buyer an amount equal to the purchase price of the non complying Product provided that in no event shall Omron be responsi ble for warranty repair indemnity or any other claims or expenses regarding the Products unless Omron s analysis confirms that the Products were prop erly handled stored installed and maintained and not subject to contamina tion abuse misuse or inappropriate modification Return of any Products by Buyer must be approved in writing by Omron before shipment Omron Compa nies shall not be liable for the suitability or unsuitability or the results from the use of Products in combination with any electrical or electronic components circuits system as
38. l Setting value change prohibition See note 3 ieee See note 3 Mo Omnes YS Caer N AL i L Burnout alarm value 1 3 Va n 2 initialization r a9 x r ru Lr 3 Set value initialization Burnout alarm value 2 9 qm gee 9 8 N d ufum mma t c Ed z compensation Processing value 5 s 5n d See note 2 e ee ce c standard value c initialization Heater control 5s min 1smin See note 1 1 1 method Arce HYS ze Lr I Password for Alarm hysteresis 1 d EJ E L RUN mode N 1smin moving to SET ri Switchable mode 0169 displ ig 34 ze Hu5g2 J isplay Processing value Alarm hysteresis 2 P 5 Dx d display status
39. lar sulfuric or ammonia gas Locations subject to static electricity or noise Locations subject to flooding or exposure to oil 2 Use DIN Track for installation and mount the Product in the correct direction 3 Do not touch the terminals when power is being supplied Electric shock may occasionally occur 4 Be sure you understand the contents of the Instruction Sheet and User s Manual and handle the Product according to the instructions provided 5 Check all terminal numbers and polarity when wiring and wire all connections correctly 6 Tighten terminal screws to the following torque Power supply terminals 0 5 N m I O terminals 0 23 N m 7 Use the Product within the specified temperature and humidity ranges 8 Do not use the Product in locations subject to flammable or explosive gases Explosions may occasionally occur if the Product is used in such locations 9 10 Use only the CTs specified by OMRON 11 Be sure to install the Product in a panel designed so that fire cannot escape to the exterior of the panel 12 Install an external switch or circuit breaker that complies with applicable IEC60947 1 and IEC60947 3 requirements and label it clearly so that the operator can quickly turn OFF the power Do not install the Product in any way that would place a load on it Digital Heater Element Burnout Detector K8AC H 21 omnon Heater Element Burnout Detector K2CU Enables detection of sing
40. lay N C contact CI Transistor drive circuit 1 Heater burnout heater layer short Transistor overcurrent alarm output N O contact drive circuit Note For contact outputs the same outputs are used for SSR error and for heater burnouts and heater layer shorts alarm outputs nm Digital Heater Element Burnout Detector K8AC H 5 omnon ll External Connection Example Wiring Method When Using the K8AC H with SSR Control Heaters Power supply Operation Description f the heater current detected at either CT1 or CT2 falls RS 485 communications below the burnout alarm set value an alarm is output The burnout alarm set value can be set separately for CT1 and CT2 No burnout alarm is output however when the temperature controller control output is OFF Burnouts are detected only while the temperature For transistor output controller control output is being input to the gate input rene terminals 11 and 12 Faulty outputs do not occur because heater burnout detection is linked with the temperature controller The minimum burnout detection time is 200 ms Shorter burnouts are not detected Turn ON the voltage fluctuation compensation function default OFF to detect power supply voltage fluctuations lesse a and automatically adjust the burnout alarm levels to compensate Also turn ON the voltage fluctuation compensation function to detect minor current fluctuations
41. le phase three phase burnouts For heaters with ON OFF control only provides voltage fluctuation compensation Rated current 0 25 to 80 A AC Current Sensor SAO Enables detection of single phase three phase overcurrents Inverse operation models and instantaneous operation models with startup lock are available Rated current 1 to 160 A AC For details refer to the Measuring amp Motor Protective Relays Group Catalog Cat No X070 e The application examples provided in this catalog are for reference only Check functions and safety of the equipment before use Never use the products for any application requiring special safety requirements such as nuclear energy control systems railroad systems aviation systems medical equipment amusement machines vehicles safety equipment or other application involving serious risk to life or property without ensuring that the system as a whole has been designed to address the risks and that the OMRON products are properly rated and installed for the intended use within the overall equipment or system 22 Digital Heater Element Burnout Detector K8AC H omnon Digital Heater Element Burnout Detector KBAC H 23 Terms and Conditions of Sale omnon Offer Acceptance These terms and conditions these Terms are deemed part of all quotes agreements purchase orders acknowledgments price lists catalogs manuals brochures and other documents whether elect
42. n display area ADJ Lights while in adjust mode Adjust Flashes while in test mode OFF at all other times SET Set Lights while in set mode Up key A gt Shift key OFF at all other times UP SHIFT IE GATE Lights or turns OFF according to gate input status Down key ST Mode key Gate Gate pulse Lights for high voltage pulse OFF for DOWN MODE low voltage pulse omnon Gate linear Lights for 4 mA or over OFF for less mE Level key than 4 mA LEVEL SSR Lights when an SSR error occurs open or short SSR error circuit E ty See note OFF when SSR is normal mS OOO EX EYES ES ALM Lights for heater burnout or overcurrent 1 Alarm OFF at all other times See note Up key Increments a set value when the set value is in change status Down key Decrements a set value when the set value is in change status Shift key Used to check set values while parameters are displayed and to put set values in change status Used to shift the set value digit when the set value is in change status Used to switch the displayed parameter Used to change the level Note Check the specific status using the alarm display parameters on the main display Alarm Indicators Processing Value Display Ranges and Order of 7 segment LED Alarm contents Functions priority display indicator characters Heater burnout 1 i ALM CT1 heater indicator lit burnout detected Heater burnout 2 ALM CT2 heater indicator lit burnout detected
43. nout alarm levels to compensate for inputs between 4 and 20 mA Adjust the burnout alarm set value at a 100 output for gradient settings as well If using the soft startup function with a power regulator set the soft startup function on the KBAC H as well to prevent malfunctions CT1 and CT2 are special products Use K8AC CT The CTs do not have polarity Connect only one CT for single phase heaters Connect two CTs for three phase heaters For three phase heaters always set the burnout alarm set values for both CT1 and CT2 When using the power regulator s gradient settings change the operation gate current level so that the heater current value is within the measurement range The initial value is 7 mA For details on operating methods refer to pages 16 to 17 Digital Heater Element Burnout Detector K8AC H 7 omnon E Heater Connection Methods and Current Depending on the heater connection method the current when an error occurs will be as shown in the following table Refer to this table when determining burnout alarm set values Normal condition Abnormal condition Single phase Delta connection Star connection V connection BAx432 8 7 A Note This is the current for when a 200 V 1 kW heater is used for single phase or three phase operation 8 Digital Heater Elem
44. nout alarm set values AL 1 CT1 burnout alarm set value and AL 2 CT2 burnout alarm set value Set 14 3 to AL 1 Set the AL 2 burnout alarm set value to so that it will not detect heater burnout because this is a single phase heater 4 Change to RUN mode Press the Key while in ADJ mode for at least 1 s to change to RUN mode 5 Check operation Test heater burnout detection by burning out one heater Also check that there are no malfunctions during temperature control Note The default setting for functions including the voltage fluctuation compensation function hysteresis output ON delay time and SSR error detection function is OFF Turn ON any of these functions as required Settings Method for Cyclic and Phase Control Heaters Settings Conditions Detecting burnouts in one heater when five 1 000 W rated heaters are connected to each phase of a three phase delta connected 200 V power supply A power regulator phase control performs heater control Normal Heater Current and Heater Current With One Heater Element Burnout Normal current 1 000 W x 5 heaters 200 V 43 3 A Current with one burnout 1 000 W x 4 200 V 39 1 A Heater burnout alarm set value Normal current current at malfunction 43 3 39 1 2 2 41 2A Selecting Heater Element Burnout Detector Models For the above example K8AC H13P FLK would be selected The burnout alarm set value is 41 2
45. ompensation function ON and OFF ON OFF Startup Lock Time Sets the lock time for the startup lock 0 OFF to 255 s Output ON Delay Sets the output delay time Set this parameter to set the operating time 0 0 OFF to 99 9 s Soft Startup Time Sets the soft startup time Setthis parameter only when using a soft start function with the power regulator 0 0 OFF to 99 9 s SSR Short Circuit Detection Turns the SSR short circuit detection function ON and OFF ON OFF SSR Open Circuit Detection Turns the SSR open circuit detection function ON and OFF ON OFF Heater Layer Short Detection Overcurrent Detection Turns the heater layer short overcurrent detection function ON and OFF ON OFF Heater Layer Short KBAC H Alarm Level K8AC HLI2 Overcurrent Alarm Set Value K8AC HLIS Sets the operating level for heater layer short overcurrent alarms Note The heater layer short alarm level is the same for both CT1 and CT2 0 200 to 2 200 A 2 00 to 22 00 A 20 0 to 200 0 A Heater Control Method See note 1 Sets the control method of the cyclic phase control heater PH1 PH3 CYCL Switchable Display Sets the CT for which to normally display the current CT1 CT2 Power Save Mode Turns entering the power save mode ON and OFF Digital Heater Element Burnout Detector K8AC H ON OFF
46. r waived unless in writing signed by the parties e Severability If any provi sion hereof is rendered ineffective or invalid such provision shall not invalidate any other provision f Setoff Buyer shall have no right to set off any amounts against the amount owing in respect of this invoice g Definitions As used herein including means including without limitation and Omron Compa nies or similar words mean Omron Corporation and any direct or indirect subsidiary or affiliate thereof Certain Precautions on Specifications and Use 1 Suitability of Use Omron Companies shall not be responsible for conformity with any standards codes or regulations which apply to the combination of the Product in the Buyers application or use of the Product At Buyer s request Omron will provide applicable third party certification documents identifying ratings and limitations of use which apply to the Product This information by itself is not sufficient for a complete determination of the suitability of the Prod uct in combination with the end product machine system or other application or use Buyer shall be solely responsible for determining appropriateness of the particular Product with respect to Buyer s application product or system Buyer shall take application responsibility in all cases but the following is a non exhaustive list of applications for which particular attention must be given i Outdoor use uses involving poten
47. ration Description f the heater current detected at either CT1 or CT2 falls below the burnout alarm set value an alarm is output The burnout alarm set value can be set separately for CT1 and CT2 No burnout alarm is output however when the temperature controller control output is OFF Burnouts are detected only while the temperature controller control output is being input to the gate input terminals 11 and 12 Burnout is detected with no errors because the automatic adjustment of burnout alarm level is linked to the temperature controller control output 4 to 20 mA Burnout is detected when control outputs from the temperature controller are 7 mA min Correct Usage Always take the control power supply from the primary side of the SSR Use a temperature controller with a 4 to 20 mA current output Always adjust the burnout alarm set value when the temperature controller s control output is at 100 20 mA The value at 100 output is used as a reference for adjusting burnout alarm levels to compensate for inputs between 4 and 20 mA e CT1 and CT2 are special products Use K8AC CT The CTs do not have polarity Connect only one CT for single phase heaters Connect two CTs for three phase heaters For three phase heaters always set the burnout alarm set values for both CT1 and CT2 Wiring Method When Using the K8AC H with Phase Control Heaters Power supply
48. ronic or in writing relating to the sale of products or services collectively the Products by Omron Electronics LLC and its subsidiary companies Omron Omron objects to any terms or conditions proposed in Buyers purchase order or other documents which are inconsistent with or in addition to these Terms Prices Payment Terms All prices stated are current subject to change with out notice by Omron Omron reserves the right to increase or decrease prices on any unshipped portions of outstanding orders Payments for Products are due net 30 days unless otherwise stated in the invoice Discounts Cash discounts if any will apply only on the net amount of invoices sent to Buyer after deducting transportation charges taxes and duties and will be allowed only if i the invoice is paid according to Omron s payment terms and ii Buyer has no past due amounts Interest Omron at its option may charge Buyer 1 1 2 interest per month or the maximum legal rate whichever is less on any balance not paid within the stated terms Orders Omron will accept no order less than 200 net billing Governmental Approvals Buyer shall be responsible for and shall bear all costs involved in obtaining any government approvals required for the impor tation or sale of the Products Taxes All taxes duties and other governmental charges other than general real property and income taxes including any interest or penalties thereon imposed direc
49. rrent Heater burnout set value ALM indicator lights ALM indicator lights SSR Short Open Circuit Alarm rj 1 1 1 1 SSR open circuit i i T 1 1 SSR indicator lights SSR indicator lights SSR short circuit 10 Digital Heater Element Burnout Detector K8AC H Using the Power Regulator s Gradient Settings The power regulator s gradient settings can be used to prevent malfunction by setting the operation gate current level The relationship between the gradient settings and output current depends on the power regulator manufacturer and model so be sure to check the characteristics of the power regulator being used before setting Setting Example Initial setting 7 mA Output current 10095 Gradient Measurement range setting 10096 0 Control signal i 4mA 7mA 20 Not detected Detected mA When the power regulator s gradient settings are changed the operation gate current level is set so that the output current is within the measurement range In the following diagram 14 mA is set Output current Gradient 100 2 Measurement range P za setting 100 2 Gradient setting 50 0 Control signal 4 mA 14 MA 2 Not detected Detected mA omnon Using Halogen or Other Heaters with Varying Resistance during Phase and Cyclic Control When phase control is used with halogen heaters or other pure metal heaters the heater res
50. semblies or any other materials or substances or environ ments Any advice recommendations or information given orally or in writing are not to be construed as an amendment or addition to the above warranty See http www omron247 com or contact your Omron representative for pub lished information Limitation on Liability Etc OMRON COMPANIES SHALL NOT BE LIABLE FOR SPECIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS WHETHER SUCH CLAIM IS BASED IN CONTRACT WARRANTY NEGLIGENCE OR STRICT LIABILITY Further in no event shall liability of Omron Companies exceed the individual price of the Product on which liability is asserted Indemnities Buyer shall indemnify and hold harmless Omron Companies and their employees from and against all liabilities losses claims costs and expenses including attorney s fees and expenses related to any claim inves tigation litigation or proceeding whether or not Omron is a party which arises or is alleged to arise from Buyer s acts or omissions under these Terms or in any way with respect to the Products Without limiting the foregoing Buyer at its own expense shall indemnify and hold harmless Omron and defend or set tle any action brought against such Companies to the extent based on a claim that any Product made to Buyer specifications infringed intellectual property rights of another party Property
51. tial chemical contamination or electrical interference or conditions or uses not described in this document ii Use in consumer products or any use in significant quantities iii Energy control systems combustion systems railroad systems aviation Systems medical equipment amusement machines vehicles safety equip ment and installations subject to separate industry or government regulations iv Systems machines and equipment that could present a risk to life or prop erty Please know and observe all prohibitions of use applicable to this Prod uct NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY OR IN LARGE QUANTITIES WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS AND THAT THE OMRON S PRODUCT IS PROP ERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM Programmable Products Omron Companies shall not be responsible for the user s programming of a programmable Product or any consequence thereof Performance Data Data presented in Omron Company websites catalogs and other materials is provided as a guide for the user in determining suitabil ity and does not constitute a warranty It may represent the result of Omron s test conditions and the user must correlate it to actual application require ments Actual performance is subject to the Omron s Warranty and Limitations of Liability Change in Specifications Product speci
52. tly or indirectly on Omron or required to be collected directly or indirectly by Omron for the manufacture production sale delivery importa tion consumption or use of the Products sold hereunder including customs duties and sales excise use turnover and license taxes shall be charged to and remitted by Buyer to Omron Financial If the financial position of Buyer at any time becomes unsatisfactory to Omron Omron reserves the right to stop shipments or require satisfactory security or payment in advance If Buyer fails to make payment or otherwise comply with these Terms or any related agreement Omron may without liabil ity and in addition to other remedies cancel any unshipped portion of Prod ucts sold hereunder and stop any Products in transit until Buyer pays all amounts including amounts payable hereunder whether or not then due which are owing to it by Buyer Buyer shall in any event remain liable for all unpaid accounts Cancellation Etc Orders are not subject to rescheduling or cancellation unless Buyer indemnifies Omron against all related costs or expenses Force Majeure Omron shall not be liable for any delay or failure in delivery resulting from causes beyond its control including earthquakes fires floods strikes or other labor disputes shortage of labor or materials accidents to machinery acts of sabotage riots delay in or lack of transportation or the requirements of any government authority S
53. value 100 V Burnout alarm set value 10 0 A If the power supply voltage drops from 100 to 95 the operating value will also reduced from 100 to 95 Burnout alarm operating value 10 0 A x 95 2 9 5 A omnon Gate Input The gate input provides a sync signal used to link burnout detection to the control output of the temperature controller For SSR control the voltage output pulse from the temperature controller is input For contactor control 24 VDC linked to a relay contact of the temperature controller is input For cyclic or phase control a 4 to 20 mA control signal is input If there is no gate input for a Heater Element Burnout Detector a heater burnout alarm would be falsely output when the voltage output pulse from the temperature controller turns OFF and there would be no way to tell whether it was a false output Note The gate input function can be disabled If it is disabled Heater Element Burnout Detector operation will not be linked to the temperature controller control signal The gate input can be used as a simple undercurrent detection relay Power saving Operation If there are no key operations performed within a preset time period the display automatically turns OFF Power Save Mode EN L j BHBB RUE A w Output Operation Time Charts Heater Burnout and Heater Layer Short Overcurrent Alarms Heater layer shorts Overcurrent set value Heater cu
54. with key operations to test alarm outputs Executed This mode sets the gate current value that stops an alarm or detection Executed Note If more than five minutes elapses with no operations performed in the Protection Settings mode ADJ mode or SET mode the status will return automatically to the processing value display If this occurs while settings are in progress it may cause unintended operations in the processing value display Be careful not to allow this to happen ll Settings Data Notation The letters of the alphabet in settings data are displayed as shown below PL VI 08 Et L El rr rur i 12 C O OLI Lo 0L Fi F1 x a n ma rm c 1 Z boc gt UJ O D A m Z GH IJ m T O 4 c Digital Heater Element Burnout Detector K8AC H 15 OMRON Operating Procedures E Moving between Modes TOMATE Mode When the key is pressed for at least one second in RUN mode the mode will be switched to GATE mode To return to RUN mode from GATE mode press the SZ key for at least one second Press the key for at least 1 s
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