User Manual - Emco Electronics
Contents
1. Password Fan Relay 2 Alarm Relay 3 Trip Relay 19 000 999 9 8 OO WE 8 WE Os 13 14 15 16 17 18 1920 123 12 3 Fan Relay Fault Relay Alarm Relay 110 230 VAC Sensor 1 4 20 mA Output Figure 1 Input Output Connections Constant RTD Current Sensor Switches Source Micro Controller m gt 12V DC Displays and LEDs 230V AC Figure 2 Simplified Block Diagram 20 V SSI S07 0090 ON DOA L SS XX GW 2Zr ON OY 80 80 64 3 LYA drr Aad NYA Ag Yddv 31vq SSI 31VOS WIYALVN L SUONeIPU pue sionuo I ueq1uo14 JILIL A18IW3SSV SOINOYLOA1S OON L08 33 131101 u09 ounyesodwey Jewsojsues LONGOYd ASIMYSHLO GQ31V1S SSJINN WW NI JYY SNOISNAWIG NIY 4 L 2 ED Ajddng sue ova oez oi 2 s 9B U0D ON ON Aejay ney O Linv4 s oe u0D Aejay dup s oe U0D Aejay wey D Z NANO _ gp e rt 4osuag l g Josuag 4 1 1OS AA IT I IO2I LNOO AAALVAAdNWNAL L aar P ap sn eana a r S 08 uoo 2 wom z 1osu s D 4osu s 6J YMS iauga y xen D Yms qua2. 3 200 C Calibration Short pin 1 and 2 of Terminal block provided for RTD Sensor of respective channel See figure 1 Connect 100 Q resistor between pin 2 and 3 Press CAL button to enter Calibration mode The display shows channel no for which the calibration is being done in CH No and 000 in Temperature Wait for 5 sec Press ENT key The Temperature display will show 200 now Remove 100 resistor and connect 175 84 Q in place of it Wait for 5 sec Press ENT key Temperature Display will show Out Press CAL key to exit Calibration mode If calibration is not successful recalibrate it Veification After calibrating the unit please verify that the calibration was successful 1 2 3 Now connect 175 84 Q resistor in place of 100 Q Short pin 1 and 2 of Terminal block provided for RTD Sensor of respective channel See figure 1 Connect 100 Q resistor between pin 2 and 3 The Display should show 000 resistor The Display should show 200 1 If readings are not proper that means calibration was not successful In such case recalibrate it 15 3 MAX Mode Operation Max Mode is used to keep track of Maximum Temperature attained by each channel It also shows the Current Maximum Temperature i e channel with highest temperature of all at that instant of time Operation of Max mode is very simple Max Mode Press Max
3. then it will get de energized at 95 C 100 C 5 C Default Value 5 C Limit 0 20 C Alarm relay Threshold This is the threshold value for energizing the Alarm Relay Once the temperature of any channel exceeds this threshold value for the predetermined amount of time decided by the Alarm Relay Delay parameter and if the Alarm relay is grouped with that channel then after the delay the Alarm Relay gets energized Default Value 100 C Limit 1 250 C Alarm relay Delay This is the amount of time for which the temperature of any channel has to remain above the Alarm Relay Threshold in order to energize the Alarm relay If the temperature decreases below the threshold value before this time is over the Alarm relay will not get energized Default Value 5 Sec Limit 1 60 Sec 11 Alarm relay Hysterisis If Alarm relay has been energized then to de energize it the temperature of the transformer should drop below Threshold Hysterisis For example if Alarm Relay got energized at 120 C and Hysterisis is set to 5 C then it will get de energized at 115 C 120 C 5 C Default Value 5 C Limit 0 20 C Trip relay Threshold This is the threshold value for energizing the Trip Relay Once the temperature of any channel exceeds this threshold value for the predetermined amount of time decided by the Trip Relay Delay parameter and if the
4. If ungrouped fan relay will not get energized even if the temperature of channel 2 exceeds the Fan Relay Threshold Similarly Alarm and Trip Relays also have to be grouped with Channel 2 in order for their operation w r t channel 2 Default Value 123 Limit None to All Ch 3 relay grouping This setting decides which relays channel 3 will operate For Fan relay to get energized by channel 3 it has to be grouped with channel 3 If ungrouped fan relay will not get energized even if the temperature of channel 3 exceeds the Fan Relay Threshold Similarly Alarm and Trip Relays also have to be grouped with Channel 3 in order for their operation w r t channel 3 Default Value 123 Limit None to All Ch 4 relay grouping This setting decides which relays channel 4 will operate For Fan relay to get energized by channel 4 it has to be grouped with channel 4 If ungrouped fan relay will not get energized even if the temperature of channel 4 exceeds the Fan Relay Threshold Similarly Alarm and Trip Relays also have to be grouped with Channel 4 in order for their operation w r t channel 4 13 Default Value 123 Limit None to All Selects the Channel for which 4 20 mA output will be available If 4 20 mA output is not required program this parameter to 000 Default Value Ch 1 Limit None or any one Ch On Off This Setting decides which Channels will be active For e g if one requires
5. and also the liability of EMCO ELECTRONICS to the purchaser shall not in any case exceed the original purchase price of the equipment For warranty service or repair the equipment must be returned to EMCO ELECTRONICS securely packed on Freight paid basis and accompanied by a certificate stating that the equipment is being returned for warranty repairs and also note giving details of the purchase Purchaser s Name and address invoice No and Date of purchase and details of the equipment failure faults conditions other useful information to facilitate early repair rectification or the equipment Return of the equipment duly repaired can be arranged on payment of the packing and forwarding charges together with any other taxes duties other miscellaneous expenses incurred alternatively the purchaser may arrange to collect the equipment from EMCO ELECTRONICS In case the repairs are not covered under warranty the charges to the same must also be paid before collection of the equipment Our engineer s services are available at site for instruments during warranty or out of warranty period on chargeable basis Details of which are available on request In the interest of development and improvement EMCO ELECTRONICS reserve the right to amend without notice details contained in this publication EMCO ELECTRONICS will accept no legal liabilities for any errors omissions or amendments 22
6. key once The system will go into the Max mode Max Led will light up The scanning of all channels will continue as normal but the corresponding temperature shown will be the recorded maximum temperature of that channel instead of the present actual temperature Pressing the Hold key in Max mode will stop the channel scanning and display the Maximum recorded temperature of the hold channel only To change the channel in Hold mode use Incr key To reset the recorded values of all the channels at once press the RST key within Max mode Make sure that Hold is not active for resetting of all channel values at once To reset the recorded value of any particular channel enter the Max mode and hold that channel then press the RST key Current Pressing Max key twice will take the system into Current Max Mode Max Mode This mode shows the channel which has maximum temperature among all channels at that instant of time 16 Testing Procedure Connect 110 230 V AC on the unit Short pin 1 amp 2 of all sensor terminals Connect 100 Q resistor across pin 2 amp 3 of sensor 2 3 amp 4 terminals Connect 100 Q pot with 100 resistor in series across pin 2 amp 3 of sensor 1 terminals Connect 100 Q resistor with Ameter in series across 4 20 mA output terminals Switch on the supply Note the readings of channel 2 3 amp 4 should be zero Keep the pot connecte
7. temperature However the relays continue to operate w r t to Temperature Once the SET key is pressed the system asks the user to enter the password Password enhances the system security by restricting unauthorized access Enter the correct password and press SET key again to go for programming the parameters If the password is wrong it asks the user to enter the password again until the right password is entered For exiting the SET mode at any time press ENT key The first parameter is Max Threshold The list of all the parameter and their details are given in table below Once the parameter value is changed press SET key to go to next parameter setting If no change is required simply press the SET key to bypass that parameter After entering the required parameter values press ENT enter key If the entered value is within permissible limits it will be accepted and stored Else system will prompt you to enter the value again Ch No Display Parameter Name Maximum Temperature Recording Threshold Details This is the threshold point for recording the maximum temperature If the temperature of any channel exceeds this threshold value it gets recorded in the system This parameter is user programmable The default value for Max threshold is set to 120 C Default Value 120 C Limit 0 250 C Maximum Temperature Recording Step This is the step in C in
8. the temperature exceeds the Maximum Recording Threshold value Enter key is used to exit from the SET mode Pressing Enter key accepts all the changes done in parameter values if within permitted limits stores them and exits the SET mode Enter key is also used in calibration mode to accept the calibration values for 0 C and 200 C Operating Instructions Please connect all the sensors before switching ON the unit 1 Ensure that the unit housing is properly grounded using the EARTH screw on the side Confirm that the Relay outputs are properly wired as given in the label Connect the RTD sensors properly as shown on the front plate for more details of connections refer fig 1 on page no 20 Two white wires of the sensor go to the two shorted terminals The red wire goes to third terminal Reversing the order of connection will generate the fault condition Also any of the open sensor wire generates fault condition If the supply is 230 V AC Connect to pins 27 and 28 of terminal block 27 Live 28 Neutral If the supply is 110 V AC Connect to Pins 28 and 29 28 Neutral 29 Live Power ON the unit The display lights up showing channel no 1 and its corresponding temperature for almost 7 seconds This initial delay is due to the time required for the systems internal setup Then the normal scanning of all the channels starts The default display speed is 2 Sec for each channel Refer the Para
9. EMCO Instruction Manual For Transformer Temperature Controller EE 801 Instruction Manual For Transformer Temperature Controller EE 801 EMCO ELECTRONICS Works Unit No 13 Kedarnath Tungareshwar Industrial Complex No 1 Village Sativali Vasai E Dist Thane 401208 Tel 0250 2481783 1804 Fax 0250 2481087 Email mumbai emcoelectronics org 302 Vasan Udyog Bhavan Senapati Bapat Marg Opp Phoenix Mill Big Bazaar Lower Parel W Mumbai 400013 Tel 022 24902283 24923183 Fax 022 24951024 Email office emcoelectronics org 15 Wood Street 1 Floor Richmond Road Bangalore 560025 Tel 080 5570215 Fax 080 5566606 Email emcoblr emcolectronics org CONTENTS TITLE PAGE No GENERAL DESCRIPTION SPECIFICATIONS INDICATIONS amp CONTROLS OPERATING INSTRUCTIONS MODES OF OPERATION a SET Mode b CAL Mode c MAX Mode Testing Procedure Trouble Shooting Package Contents Table 1 Parameters Defaults and Limits Figure 1 Input Output Connections Figure 1 Simplified Block Diagram Front Panel Controls amp Indication Warranty I General Description Features EMCO s Transformer Temperature Controller Type EE 801 is used for monitoring and controlling the Winding Temperature of 3 Phase Transformers Four Input Channels are available for connecting four RTD PT100 Sensors The Temperature range is from 10
10. Trip relay is grouped with that channel then after the delay the Trip Relay gets energized Default Value 120 C Limit 1 250 C Trip relay Delay This is the amount of time for which the temperature of any channel has to remain above the Trip Relay Threshold in order to energize the Trip relay If the temperature decreases below the threshold value before this time is over the Trip relay will not get energized Default Value 5 Sec Limit 1 60 Sec Trip relay Hysterisis If Trip relay has been energized then to de energize it the temperature of the transformer should drop below Threshold Hysterisis For example if Trip Relay got energized at 140 C and Hysterisis is set to 5 C then it will get de energized at 135 C 140 C 5 C Default Value 5 C Limit 0 20 C 12 Ch 1 relay grouping This setting decides which relays channel 1 will operate For Fan relay to get energized by channel 1 it has to be grouped with channel 1 If ungrouped fan relay will not get energized even if the temperature of channel 1 exceeds the Fan Relay Threshold Similarly Alarm and Trip Relays also have to be grouped with Channel 1 in order for their operation w r t channel 1 Default Value 123 Limit None to All Ch 2 relay grouping This setting decides which relays channel 2 will operate For Fan relay to get energized by channel 2 it has to be grouped with channel 2
11. anging the parameter value this key is used to shift to next digit Blinking of digit indicates digit to be modified The value of this digit can be incremented by INCR key Cal key takes the system into auto calibration mode Usually there is no need for calibrating the system as it is factory calibrated However if required the system can be calibrated easily Each channel requires individual calibration Pressing calibration key twice in succession takes the system out of this mode without calibrating Also in calibration mode if no key is pressed for two Min system exits from calibration mode This key is used to increment the channel number in Scan and Hold Modes In SET mode this key is used to increment the parameter values Parameter value is changed by changing individual digits For example if the parameter value is to be changed from 199 to 200 individual digits need to be changed i e pressing increment key at 199 will not make it 200 Only the digit under consideration blinking will get incremented If first digit is blinking 1 incrementing it will make the display 299 To switch to next digit shift key is used Now middle digit will start blinking 9 Incrementing it will make the display 209 Similarly using shift key and increment key once again will make display 200 5 Max Enter Key Takes the system in Max mode Max mode displays the maximum recorded temperature The temperature is recorded only if
12. d channel 2 reading should change in accordance with the pot Also the current through Ameter should change in accordance with the pot 21 Similar testing should be carried out for other 2 channels Trouble Shooting Sr No Symptom Remedy 1 No Display Check mains supply is properly connected Power switch is switched on 2 Fault LED continuously On Check if any sensor is open or short Also make sure that all the sensors are properly connected as shown Wrong sensor connection leads to fault condition Package Contents On receiving the Package please ensure that the package contains the following items 1 TTC Unit 1 No 2 User Manual 1 No 3 Mounting Accessories 3 Nos 4 PT 100 Sensor 3 Nos Table 1 Parameters Defaults and Limits T Setting Parameter De fanl Setting Limit No value Max Threshold 0 250 C Max Step 1 20 C Display speed 1 60 Sec Threshold 1 250 C Fan relay Delay 1 60 Sec Hysterisis 0 20 C Alarm relay Threshold 1 250 C Delay 1 60 Sec Hysterisis 0 20 C Trip relay Threshold 1 250 C Delay 1 60 Sec Hysterisis 0 20 C Relay Grouping Ch 1 000 123 Ch 2 000 123 Ch 3 000 123 Ch 4 000 123 4 20 mA O p Ch Any One Ch Ch On Off Min One On Default settings y n
13. d to channel 1 at its minimum position Channel 1 should read zero and the Ameter should read 4 mA Now gradually increase the resistance the reading of channel 1 should gradually increase with the resistance Also the reading of the Ameter should gradually increase with the resistance 10 Note that when the reading of channel 1 equals 80 C The Fan LED should light up and Fan relay should get energized The Ameter should read 9 12 mA 11 When the reading of channel 1 equals 100 C The Alarm LED should light up and Alarm relay should get energized The Ameter should read 10 40 mA 12 When the reading of channel 1 equals 120 C The Trip LED should light up and Trip relay should get energized The Ameter should read 11 68 mA 13 Furthur increasing the pot will continue to increase the reading and current 14 When the reading reaches its maximum i e 250 C the current is also maximum i e 20mA 15 Any furthur increment in pot will lead to Over range i e Fault conditon In this case Display reads Ovr Fault LED lights up and Fault relay gets energized 16 Fault relay also gets energized when the sensor is open amp display reads Opn 17 Now remove the pot and connect it to channel 2 in a similar fashion as connected to channel 1 18 Connect 100 Q resistor across pin 2 amp 3 of channel 1 sensor terminals 19 Enter the SET mode and change the 4 20mA channel to Ch No 2 20 Now channel 1 3 amp 4 should read zero an
14. ects the parameter to be adjsted Modes of operations Scan Hold Mode Set Mode Max Mode Current Max Mode Calibration Mode Inputs Sensor Inputs Mains Outputs Relays 4 20 mA output Toggles between Automatic Scan and Hold Mode of operation Allows configuration of all the parameters within permitted limits Shows the maximum temperature attained by each channel Shows the maximum temperature amongst all the four channels at the moment Allows the calibration of the system if needed 3 Pin Terminal Block for 4 sensors each 3 Pin Terminal Block for connecting mains supply 3 Pin Terminal Block for 4 Relays each Fan Alarm Trip and Fault 2 Pin Terminal Block for 4 20 mA output for any one channel Indications amp Controls Indications 1 4x7 Segment Display Hold LED Set LED Max LED Fan LED Alarm LED Trip LED Fault LED Controls 1 Scan Hold Key 4 seven segment displays are divided into two groups of 1 digit for Ch No and 3 digits for Temperature Display Ch No is used to indicate the channel no The Temperature displays are used to display temperature of that particular channel in normal mode In SET mode Ch No shows parameter no and Temperature shows the value of that respective parameter ON when the system is in Hold mode In Scan mode this LED is turned OFF Turns ON when the system is in SET mode Turns ON when the system is in MAX m
15. for each relay of rating 5A 240V AC 24VDC Input Output Terminals Suitable for 2 5 mm sq wire Power Requirements 110V 230V AC 50 Hz 15VA or Universal type optional Overall Dimensions 195 H x 230 W x 100 D mm Mounting Wall Mounting by 3 nos M6 Screws Enclosure MS powder coated with acrylic window Operating Temperature 0 C to 50 C Weight 3 KGs aprrox Insulation 2KV for 1 min between all terminals shorted and earth Settings Maximum Temperature Record Threshold 0 C to 250 C Maximum Recording Step 1 C to 20 C Display Speed 1 sec to 60 sec Fan Relay Threshold 1 C to 250 C Fan Relay Delay 1 sec to 60 sec Fan Relay Hysterisis 0 C to 20 C Alarm Relay Threshold 1 C to 250 C Alarm Relay Delay 1 sec to 60 sec Alarm Relay Hysterisis 0 C to 20 C Trip Relay Threshold 1 C to 250 C Trip Relay Delay 1 sec to 60 sec Trip Relay Hysterisis 0 C to 20 C Channel 1 Relay Grouping Either none to all relays Channel 2 Relay Grouping Either none to all relays Channel 3 Relay Grouping Either none to all relays Channel 4 Relay Grouping Either none to all relays 4 20 mA O P Channel None or Any One Channels On One min to Four max Password 000 999 Parameter Adjust Shift Selects and rotates clockwise the digit to be modified Increment Increments the value of the selected digit Enter Saves the modified value if within limits Set Sel
16. meter Values in Table1 on page no 19 to see if any changes are required in any parameter value If any change is required Press the SET key to enter the set mode Make all the necessary changes to the parameter values as required The operation of SET mode is detailed in SET mode operation on page no 9 7 If the temperature of any channel is more than any of the threshold values the corresponding relay should get energized if it is grouped with that channel Grouping details can be found in SET mode operation on page no 13 Also the Maximum values should get recorded if the temperature of any channel exceeds the Maximum Recording Threshold value 4 20 mA Current Output is available only for one channel It is programmable in SET mode The Output current varies according to the temperature of the channel 4 mA corresponds to 0 C and 20 mA correspond to 250 C Modes of Operation 1 SET Mode Operation Note If the display goes off or unit becomes unfunctional in SET mode please Switch OFF and again Switch it ON SET mode allows user to program all the parameters as per ones requirements To enter into the SET mode Press SET key once SET LED lights up indicating that system is in SET mode If none of the key is pressed within two minutes the system automatically exits out of the SET mode During SET mode Parameter values are displayed instead of normal
17. ode Blinks when the system is in Current Max mode Turns ON when Fan Relay is energized Turns ON when Alarm Relay is energized Turns ON when Trip Relay is energized Turns ON when Fault Relay is energized Toggles the system between Scan and Hold mode In Scan mode the system displays the temperature of all the channels one after another in a sequence repeatedly Each channel is displayed for the duration as programmed in the Display Speed parameter in SET mode The default duration is 2 Seconds In Hold mode only one channel channel currently being displayed is locked on the display i e scanning of all channels is stopped To change the channel in Hold mode Increment key is used 2 3 4 Set Reset Key Shift Cal Key Incr Key Takes the system in SET mode Here all the parameters can be programmed according to the requirement In SET mode this key is also used to increment the parameter number by one i e once the values of the current parameter are entered this key is pressed to go to next parameter for programming Pressing this key after last parameter rollbacks to first parameter To come out of the SET mode Enter key is pressed Reset function is active only in the Max mode In all other modes this function remains inactive Reset key is used to reset all the recorded maximum temperature values to Zero Shift function of this key is associated to SET mode only In SET mode while ch
18. only 2 Channels instead of 4 he can delete the other 2 channels deleting the channel means neither they will be displayed nor control the operation of any relay At any given time at least one channel should be kept On i e all the 4 channels cannot be deleted at the same time Default Value all ch On Limit None to All Default settings Restores all the parameter to their default values Note Password and Maximum recorded temperature values are not restored For resetting the Maximum recorded temperature values press RST button in Max mode Default Value No Limit No or Yes Password Allows changing password Password can be set to any number from 000 to 999 While changing password special care must be taken Please write down the new password at safe place because once the parameter rollsover next time the actual password is not displayed but only ee is displayed for protection purpose Default Value 000 Limit 000 999 14 2 CAL Mode Operation This is an Auto Calibration Mode In general there is no need to calibrate the system as it is already factory calibrated before shipping But in case if one wants it can be easily calibrated in two steps Each channel requires individual calibration If the channel calibration does not succeed in first attempt calibrate it twice Procedure Calibration procedure has two steps 0 C Calibration 1 2
19. to 250 C and is indicated on 3 digits 7 segment display The display can be kept in SCAN mode or in HOLD mode to display any one particular channel The display scan speed is programmable Each channel has a programmable set point with differential hysteresis and delay Four relays with one changeover contact are available for FAN ALARM TRIP and FAULT conditions Relays can be grouped for selected channels FAULT relay indicates Sensor Open under range or over range conditions Maximum Temperature of each channel is recorded and can be displayed when MAX mode is selected Pressing the RST key can reset the Maximum Temperature LED indicators are provided to indicate Relay operations HOLD SET and MAX modes 4 20 mA output is available for any one selected channel Five keys on the Front Panel allows for selecting the various modes of operation as well as for programming the parameter values The unit is wall mountable and enclosed in a rugged metal cabinet The power supply is 110V 230V AC or Universal type can be optionally provided ll Specifications No of Channels 4 Temperature Sensor RTD PT100 Set Points Programmable for FAN ALARM and TRIP Temperature Range 10 to 255 C Resolution e Accuracy se Poe Display 4 digit 7 segment LED Display Speed 1 to 60 secs LED Indicators SET MAX HOLD modes amp Relay Operations No of Relays 4 FAN ALARM TRIP FAULT Relay Output 1C O contacts
20. welou t D caly zala bola OJWd WAIN IO ISN V LL A yms uoneuqlleo WUS yous yesey 19S yoUIMS ueog PIOH q31 apow xe Q371 apow jes Q371 pow p oH aal Aejoy yne4 q31 Aejay dup qa Aejay wey qa Aejay ue4 Ae dsiq ee ainyesodway gt Ke dsiq I8uueuo 909 00d0d LYVWHO 39NV23331O01 NOISNAWIG 33433 G3Id4IO3dS LON S39NV33101 HOA 21 Warranty This product from EMCO ELECTRONICS is warranted against defects in materials and workmanship for a period of 12 months from the date of dispatch to the first Buyer purchaser of this equipment this being essentially limited by warranties given to EMCO ELECTRONICS on the component used in equipment During the warranty period EMCO ELECTRONICS will at its option either repair or replace the product which proves to be defective provided the product has been used with reasonable care and in accordance with the manuals product specification Consequently this warranty shall also not apply to defects damages in transit or resulting from misbehaving misuse unauthorized modifications or repairs operations outside the environmental electrical and or other specification improper or inadequate maintenance of the product or site conditions as required recommended and damages arising from accidental or abnormal causes The warranty period for items repaired replaced shall not exceed the period for which the equipment was originally warranted
21. which the maximum temperature is recorded i e the maximum recorded temperature value gets updated only if the current temperature exceeds the previously recorded temperature the step value Default Value 10 C Limit 1 20 C Display Speed This parameter decides the no of seconds each channel temperature will be displayed After time is over next channel temperature is displayed for the same amount of time Default Value 2 Sec Limit 1 60 Sec Fan relay Threshold This is the threshold value for energizing the Fan Relay Once the temperature of any channel exceeds this threshold value for the predetermined amount of time decided by the Fan Relay Delay parameter and if the Fan relay is grouped with that channel then after the delay the Fan Relay gets energized Limit 1 250 C Default Value 80 C 10 Fan relay Delay This is the amount of time for which the temperature of any channel has to remain above the Fan Relay Threshold in order to energize the Fan relay If the temperature decreases below the threshold value before this time is over the fan relay will not get energized Default Value 80 C Limit 1 20 C Fan relay Hysterisis If Fan relay has been energized then to de energize it the temperature of the transformer should drop below Threshold Hysterisis For example if Fan Relay got energized at 100 C and Hysterisis is set to 5 C
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