EN Supply-control system of electric heaters
Contents
1. 5 4 1 Description of Dal ariete Susseresmdidk D 7 5 Description of control system s elements ccccceeeeeeeeeeeeceneseneeseaeseeneeaeeecaseseneseaneseeesanesones 8 5 1 Connecting signal and control elements saeua Rode or cnin Lc dod casu aene p ar ct c im sediment 8 ou Connecting DONEFISEDDI 8 5 3 Reduired 6 Elet HIC SENE ME 9 VTS reserves the right to implement changes without prior notice User s manual 1 User s manual 1 Description of controls 1 1 Supply control system Application Power supply protection and smooth power control of multistage electric heaters with rated supply voltage 3x400V 50Hz Range of operation Electric heaters having from 1 to 6 heating levels with 18 kW each dedicated to use in VS type Air Handling Units Elements 1 Contactors 2 HE module 3 Installation switches 4 Mains switch 5 Heaters 1 2 Main Power Switch 1 3 Control module Confirmation Entering parameter value LED display edit mode Change confirmation Navi buttons Switching between parameters and changing parameter s value Cancel abort Aborting parameter value e 72. ME ME 9 9 p 9 y 2 Ew 3 ER ETE 3 4 3 bau E EE i ott g gi ei P gi gi i T NLO 60 8 72 9 68 J 2 9fk 0 VTS reserves the right to implement changes without prior notice Advanced instructions 10 A c 6H c NMd 2040 NO IN9 IN93 NO INPM WT NO IN M INEJ NO rj NO WLY NLA 2 p zn in gt NO WSW NS4 s NO WEM Wrd c NO WeX Wed c NO WZW INZS NO INLM INV3 M106 INMd en in NO W M WtJ NO IN M IN J NO WeM Wc3 NO INVM WV3 MAZZ WMd in NO INEX IN 3 NO INCM IWCA NO MAYS WMd LM b NO INZW WZJ NO INLM WLA NeI9 ale INMd zn in NO INLM IWV3 NvISL rrr CIEXOV 99 OGL LC SA 9 99 GL OL SA L2 9 S 2 Ww 0 fk 11 VTS reserves the right to implement changes without prior notice Advanced instructions Vct US IWNMd zn in NO IN9 IN93 NO INSM INS3 NO WtM Wtr3 NO IN X IN 3 NO WeM
3. ALR RX TX 1 edit mode without saving changes PWM output status indication The LED lighting up indicates operation of the first heater s section Fu n cti n Data transmission indication not available in the current Switching on the heater version Alarm status indication 1 4 List of available parameters Parameter Function Factory setting 2h Signalvalueatanaloginput contolone 1 00 00 15h PWMoutputlimit 1 9700 Writeandread 46h Digitalinputs J Red O h Digital outputs 7 7 Red O 18h Current percentage value of PWM output setting 00 100 9 Recording and read Heater operation mode selection 0 100 out VTS reserves the right to implement changes without prior notice 2 User s manual innovative air handling units 2 Technical specification 2 1 Construction The control panel is built in a side wall of the electric heater series of suppy control systems power tkw 18 36 54 72 90 108 mesecne 8 the switch cross assembled on the feeding cable outside the heater s casing 2 2 Operation parameters 3x400 V 400 V 25kV rated short time withstand current I for respective circuits effective value 2 gt of alternating current component withstood during 1 s i e short circuit current expect
4. Two screw terminals bimetallic element with a function of a normally closed contact Membrane coupled with mechanical module If the acceptable pressures difference is exceeded the membrane undergoes deformation and switches off casing plastic Measuring element appropriate capillary 2 or 6m long filled with fast boiling agent thermostat equipped with adjusting screws enabling change of limiting temperature temperature and system reconnection temperature hystheresis VTS reserves the right to implement changes without prior notice activation temperature 65 3 hysteresis 17 3 parameters of bimetallic element voltage 30VDC permissible loadA measurement 20 300 Pa 30VDC output signal voltage free switching contact rated operational voltage number of cycles 109 cycles operation conditions 30 85 C protection class IP44 Recommended pressure control operating position horizontal In case of vertical alignment the set point value is 11 Pa higher than the real one Measurement 18 15 C hystheresis value 1 7 12 C operation rated voltage 30V DC or 230 VAC output signal no voltage switchable contact protection class 44 User s manual innovative air handling units Location of cable connection Conductor type Cross section Control signal input 21 Digital inputs 17 18 19 3x1 Alarm ou
5. IWc3 NO Nel80L WMd en in NO INSM INS3 NO INPM WYJ NO IN M IN 3 NO WeM Wc3 NO INLM WV3 Nv06 in NO INPM WY3 NO NO INCM Wc3 NO INLM INLA3 MACL WMd zn in NO IN M IN 3 NO NO MAYS INMd 4 NO 5 B D poderes NO INLM INL3 MA9E NO INLM INL3 Nel8L owe 8 O Q 4 Dre crue VNd31SM VOINMAZYDVN ONILV ZIH eld 0e 8 9c x v 86 cc 68 0 Advanced instructions 12 VTS reserves the right to implement changes without prior notice
6. contains some information on current signal value at the analog input control one The parameter has got an informational function and is designed mainly for checking the system EXAMPLE If against expectations the heater does not work and no alarm message is displayed please check the 12h parameter value If this value is lower than the value provided in the 12h parameter it means that there has been no condition to switch the heater on VTS reserves the right to implement changes without prior notice Advanced instructions 5 VYVElITUS Number of available heating levels Range 1 6 Record and read options are available Default value 2 The parameter defines the max available number of heating levels Thanks to this parameter the max output power of the heater can be limited by the level listed below LEER 2 5 Jo 6 54 72 99 108 EXAMPLE 1 Number of heating levels for the power consumption at Pn 6 7kW Pn 13A Pmax 18kW z 0 37 The chosen number of heating levels is 1 EXAMPLE 2 Number of heating levels for the power consumption at Pn 100 kW Pn 100KW 13A Pmax 18kW 5 56 The chosen number of heating levels is 6 Pmax max output of the heater s first level CAUTION The max power output of the whole heater depends also on the 15h parameter Range 1 0 10 0s Record and read options are available Default value 10 0 The parameter defines the full cycle durat
7. d VTS 18kW heater VTS reserves the right to implement changes without prior notice User s manual 7 4 2 Alarm output 7717 gt The moment an alarm state is raised heating stages switched off the PWM signal is zero the three pole alarm transmitter contact is switched Alarm state is indicated on the display with the symbol presented below Heater operation mode 19h20 Hl It is caused by disappearance of at least one digital input whose current state is displayed under the 16h parameter The alarm state is automatically deactivated when three signals on digital inputs appear Initial heater operation mode 19h 1 100 Itis caused by disappearance of signal on DI2 input only The alarm state is autpmatically deactivated when signal on DI2 input appears ATTENTION If the state of DI2 input changes three times within an hour the system is blocked and it needs manual restart by switching the module off and on again or bysetting the 19h parameter to 0 and then setting it back to a value from the 1 100 range 5 Description of control system s elements Functions and Construction Operation parameters application Protection module of the electric heater protecting it against overheating OVERHEATING THERMOSTAT Fan s pile up control DIFFERENTIAL PRESSURE CONTROL Controlling the electric heater operation in the initial heater mode THERMOSTAT Metal casing
8. eater s power is proportional to the signal on the analogue input digital inputs play security functions 1 100 operation in the initial heater mode The heater s power increases or decreases smoothly depending on the state of DL3 digital input The analogue input remains inactive DI1 and DI2 digital inputs playsecurity functions EXAMPLE the heater s power 35kW 19h parameter 5 depending on the state of the heater input the heater s power will increase or decrease smoothly at the speed of 1 8kW per minute Upper signal limit at analog input Range 0 0 10 0V Record and read options are available Default value 10 The parameter defines a value of the control signal at which the control module sets the max power output of the heater CAUTION The max power output depends on the 13h and 15h parameters Lower signal limit at analog input Hange 0 0 10 0V Record and read options are available Default value 0 2 The parameter defines a value of the control signal at which the control module switches on the first heating level and set the min power output of the heater This value should be higher than zero Some voltage may induce in the control cable due to interference of other electric devices noises Setting too low value of the 11h parameter may result in an unintended switch on of the electric heater Signal value at analog input control one Range 0 0 10 0V Only reading option is available The parameter
9. ed at connecting voltage of rated peak withstand current i at 0 5 10 2 kA i Amount 6 pcs Digital output Open collector Voltage 24 VDC Pr d max 0 5A PWM output Open collector pibe 2276 Digital inputs 5 NDC Alarm output 3 pole relay CAUTION e 1 Connection and start up of the heater should by done by qualified staff only 2 he control system is designed for use with the VTS heaters built in the VTS AHUS only VTS reserves the right to implement changes without prior notice User s manual 3 7717 gt 3 Operation Start up of the heater is strictly blocked by the overheating thermostat and the signal of the fan s pressure control unit 3 1 Working with display and keyboard 3 2 Basics of control Power output of the heater is controlled by the PWM signal Pulse Width Modulation through alternate switching on and off the first heating level equipped with solid state relays SSR Depending on chosen mode of operation duration of the switch on phase is directly proportional to the control signal supplied to the analog input or for time of activation of digital input DI3 Next heating levels are switched on by the contactors when the first heating level reaches the max power output Once the successive heater s level is switched on the power of the first one goes down to the min value Heat
10. er operation mode 19h20 The heaters operational voltage is supplied only then if all three 2 state inputs of the HE control module signal high level Even if one of the inputs signals a low level the control module enters the alarm state till all signals at the 2 state inputs are present The alarms do not require manual cancellation Initial heater operation mode 19h 1 100 Operating voltage of heaters can only be supplied when the DI1 and DI2 switching inputs of the HE control module indicate high state If at least one of the inputs indicates low state the control module switches the heater off and in the case the DI2 input indicates low state it goes into an alarm state DI3 is the conrol input If it is active the module increases the heater s power and if it is not active the heater s power decreases The rate of increasing and decreasing the heater s power is set in 19h parameter in 1 100 range of full heater s power per minute min m gt 6 2 9 5 5 7 8 5 10 Uster V m VTS reserves the right to implement changes without prior notice 4 User s manual innovative air handling units Il Advanced instructions 4 Details of control module s functions 4 1 Description of parameters EE EM Heater operation mode selection Range 0 100 read write possible The parameter determines the heater operation algorithm 0 operation in the typical electric heater mode The h
11. innovative air handling units oupply control system of electric heaters Operation and Maintenance Manual Vct 271 5 DTR HE ver 3 1 12 2007 The control gear complies with European Standard IEC EN 60439 1 AC Standard Switchboards and low voltage control gears www vtsgroup com innovative air handling units Table of Contents he WSOP S idi dl 2 1 Description nnmnnn 2 1 1 Supply control system 2 1 2 Mai Power 2 Ore girone o 2 1 4 List Of available parameters sssssssssssssesssesesenenennne nnne nnne nne nne nnn nsn rn se nnne rn sensn nnns 2 2 3 PS CONS TUCO MERE 3 2 2 Operation Al ANS ONS 3 2 3 Parameters of HE control Hodie 3 2 OBS CLO anini pares reece UNIUS clement I AEE E A E FE DR ete entra 4 3 1 Working with display keyboard LES 4 3 2 Basics Of GON OU PENNE EIER TE 4 Il Advanced 222 5 4 Details of control module s
12. ion of the impulse width The full cycle consists of the switch on time of first level of heating grey rectangle and of the time when the first level of heating is switched off Average output 5096 Average output 7596 Average output 10096 14h impulsing duration 2 14h 14h Time Extension of the impulsing time is recommended if the max heater output power is defined below 18kW and also when the heater power consumption causes interferences of other electric devices e g lighting flickering Shortening of impulsing time is recommended in order to improve the control accuracy i e when first heating level impulsing causes periodic fluctuation of supply air temperature measurement of a heated room VTS reserves the right to implement changes without prior notice 6 User s manual innovative air handling units Range 0 100596 Record and read options are available Default value 100 The parameter defines in a percentage value the max output power in which the first heating level with smooth power control is able to work Its value should be determined basing on power consumption defined in the ventilation system design EXAMPLE 1 POWER consumption Pn 6 7kW 154 Pur 1 134 100 BM 100 37 18kW 18kW EXAMPLE 1 POWER consumption Pn 100 kW 15 E 41 34 S LOA 18kW 18kW Pmax max output of the heater s first level mE NM Digital input 2 state Range 000 111 binary value Only reading optio
13. n available The parameter contains information on status of three available 2 state inputs indicates lack of input signal 1 indicates that the 24VDC signal is present H1 6 100 554 DI 1 FAN S PRESSURE CONTROL UNIT POS ERE TERMENI It protects the heater against operation J Users element or device allowing to 1 Id withoutartlow Stop operation of the heater bw 01 2 OVERHEATING THERMOSTAT Protects the heater against overheating 17h Digital output 2 state The parameter contains information on six available digital inputs designed for switching on next contactors through which the next heater s levels are fed DO 1 first heating level DO 4 fourth heating level Heater power output 0 18kW Heater power output 54 72kW DO 2 second heating level DO 5 fifth heating level Heater power output 18 36kW Heater power output 72 90kW DO 3 third heating level DO 6 sixth heating level Heater power output 36 54kW Heater power output 90 108 kW CAUTION The parameter does not contain info on the status of alarm output EE EM Current percentage value of PWM output setting Range 0 100956 Only reading option available The parameter defines information on a percentage value of the set PWM output The information should be consider as a percentage value of the max power output of the first heating level in standar
14. tput 22 23 24 1x1 lub 2x1 Feeding of HE control module 11 12 1 The system feeding cable should be connected in accordance with the electric diagram The wire cross sections has been selected for long term current capacity according to the Picture for three load conductors Due to the protection selectivity length cable placement method and short circuit currents revise the feeders cross sections in the table below HEATER S DATA OF POWER PROTECTION RATED CURRENT SYSTEM FEEDING CABLE TYPE 2 OUTPUT ELEMENT 1 12 L3 a 5x25 5x35 5x70 Control cables single or multi Rated voltage 300 500 V Operating conductor PCV insulated temperature 40 up to 70 C Multi conductor cables with single or multi wire copper conductors PCV insulated In case of conductor s cross section exceeding 25 mm it is recommended to use multi conductor cable in jacket flexible Rated voltage 450 750V Operating temperature 40 up to 70 C VTS reserves the right to implement changes without prior notice Advanced instructions 9 Vct US 6 Electric schemes 44O NO 44O NO F7 F7 F7 I F7 um E i _ _ i _ _ _ m m m m m AOOVXE dcr 9 0 9 9 T T T T LL 9 L SL eL vL v 6 6 8 2 I l og E 1 4 O
Download Pdf Manuals
Related Search