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Ekinex EK-ES2-TP Скачать руководство пользователя страница 94

Application manual

Air quality multisensor and regulator EK-ES2-TP

Release 1.0 - Updated: 14/02/2020

Application Manual

© EKINEX S.p.A. - All rights reserved

Page 94

9.6

2-points control with hysteresis for auxiliary heating / cooling system

Some heating / cooling systems show a very large response inertia; this is mostly due to the fact that a relevant
part of building mass is involved in the thermal exchange.
In order to improve response time for start-up or ambient temperature transients, auxiliary systems with
substantially lower inertia are used in support of the main system whenever the difference between setpoint
(T

set

) and measured temperatures (T

eff

) becomes significant.

The auxiliary – also called “second-tier” – system, in the initial stage, contributes to heat / cool the environment
and then stops its action when the difference between T

set

and T

eff

is lower and can be addressed by the

system with higher inertia.
The control algorithm used for the second-tier system is the 2-points On/Off control with hysteresis.

Heating mode
When the measured temperature (T

eff

) is lower than the value of the lower threshold (T

set

– ΔT

Offset

– ΔT

hysteresis

),

the device activates the auxiliary heating by sending the relative frame to the proper actuator; when the
measured temperature reaches the value (T

set

– ΔT

Offset

), the auxiliary heating system is turned off by sending

the relative frame to the proper actuator.

Picture 20

Cooling mode
When the measured temperature (T

eff

) is higher than the value of the lower threshold (T

set

+ ΔT

Offset

+

ΔT

hysteresis

), the device activates the auxiliary cooling by sending the relative frame to the proper actuator; when

the measured temperature reaches the value (T

set

+ ΔT

Offset

), the auxiliary cooling system is turned off by

sending the relative frame to the proper actuator.

T ambient

OFF

ON

Tset



Thysteresis

T ambient

OFF

ON

Tset



Thysteresis

TOffset

TOffset

Main heating system

(high inertia)

Auxiliary stage

(low inertia)

t

Power [W]

Picture 19 - 2-points control with hysteresis for auxiliary system

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Содержание EK-ES2-TP

Страница 1: ...Application manual Air quality multisensor and regulator EK ES2 TP EK ES2 TP R...

Страница 2: ...Application manual Air quality multisensor and regulator EK ES2 TP Release 1 0 Updated 14 02 2020 Application Manual EKINEX S p A All rights reserved Page 2...

Страница 3: ...5 Integrated sensors 15 5 1 Temperature sensor 16 5 2 Relative Humidity sensor 16 5 3 Air quality sensor 16 6 Input variables 17 7 Application program for ETS 18 7 1 About EK ES2 TP 19 7 2 General 19...

Страница 4: ...rt 55 7 7 4 3 Antistratification function 55 7 7 4 4 2 stage configuration with fan coils as auxiliary stage 55 7 7 4 5 Remote fan speed modification 56 7 8 Relative humidity control 58 7 8 1 Dehumidi...

Страница 5: ...85 9 2 Continuous Proportional Integral control 87 9 3 PWM Proportional Integral control 88 9 4 Fancoils with On Off fan speed control 90 9 5 Fancoils with fan speed continuous control 92 9 6 2 points...

Страница 6: ...02 2020 Application Manual EKINEX S p A All rights reserved Page 6 Revision Updating Author Date 1 0 First version G Schiochet 14 02 2020 The latest revision of the application manual is available at...

Страница 7: ...ir mass of the room by means of the actual temperature Teff measured by the device itself or received by the bus and of the setpoint temperature Tset set by the user comparing the two values and a ser...

Страница 8: ...s for the control of VAV flow regulators Compatibility with KNX actuators for 6 way zone valves management Logic functions AND OR NOT and XOR availability in order to implement complex functions in th...

Страница 9: ...r the connection of the bus The plate and the frame if present must be ordered separately For further information please refer to ekinex product catalog or visit www ekinex com 1 6 Accessories The dev...

Страница 10: ...Plate Rocker EK ES2 TP With frame Form or Flank series or without NF no frame serie EK PQS 1 posto 60x60 EK P2G 2 posti 55x55 60x60 EK P2S 2 posti 60x60 EK T1Q EK ES2 TP R With frame Form or Flank se...

Страница 11: ...evice or at least the download of the physical address d install the device on the metallic support through the spring system tightening then the two screws requires also to tighten the screws include...

Страница 12: ...ice functionality is defined by the settings done via software The configuration requires necessarily ETS4 or later releases and the ekinex APEKES2TP knxprod release application program that can be do...

Страница 13: ...ors from bus LED Settings Heating Cooling Ventilation Temperature control Dehumidification Humidification Calculated psychrometric values Relative humidity control Thresholds CO2 control Thresholds TV...

Страница 14: ...programming operating mode Picture 4 Device programming led 1 and pushbutton 2 For the device commissioning the following activities are required make the electrical connections turn on the bus power...

Страница 15: ...y ON Green LED 4 for indication of the humidification functionality ON Red flashing LED for indication that the measured CO2 equivalent exceeds threshold 3 orange LED if the concentration is between t...

Страница 16: ...alue This value can be used to manage an advance room thermal regulation and to enlarge the safety working conditions for some cooling terminal systems In the next chapters a detailed explanation on h...

Страница 17: ...thermoregulation functions Object 9 2 bytes Room temperature KNX bus through communication objects Object 20 2 bytes Humidity Object 21 2 bytes and Object 22 1 byte Indoor CO2 value Object 139 2 bytes...

Страница 18: ...rogram as imported into ETS or by pressing the Default Parameters button of ETS is as follows About EK ES2 TP General Temperature sensor Relative humidity sensor CO2 sensor TVOC sensor Internal sensor...

Страница 19: ...es Parameter name Conditions Values Delay after bus voltage recovery 00 00 04 000 hh mm ss fff range 00 00 04 000 00 10 55 350 Time interval after which the transmission of the telegrams on the bus st...

Страница 20: ...tions Values Temperature sensor enabled disabled The temperature sensor is enabled as default Filter type Temperature sensor enabled low medium high Low average value every 4 measurements Medium avera...

Страница 21: ...shold 2 below or above no yes Behaviour at lock Temperature sensor enabled Threshold 1 below or above Threshold lock enable yes none off on Behaviour at bus recovery Temperature sensor enabled Thresho...

Страница 22: ...uisition filter calculates an average with a series of measured values before sending on the bus The parameter can have the following values low average value every 4 measurements medium average value...

Страница 23: ...n the range 30 s 120 min Threshold 1 Relative humidity sensor enabled not active below above Value Relative humidity sensor enabled Threshold 1 below or above 65 range 0 100 Threshold value update fro...

Страница 24: ...old 1 and or Threshold 2 below or above no sending other values in the 30 s 120 min range Object name Conditions Dim Flags DPT Comm Obj No Humidity value 2 bytes Relative humidity sensor enabled 2 byt...

Страница 25: ...shold 2 below or above Threshold value update from bus yes 1 byte C W 5 001 percentage 0 100 19 Acquisition filter The acquisition filter computes an average with a series of measured values before se...

Страница 26: ...O2 sensor enabled disabled enabled It enables the CO2 control folder Object name Conditions Dim Flags DPT Comm Obj No CO2 value CO2 sensor enabled 2 bytes CR T 9 008 parts million ppm 9 Acquisition fi...

Страница 27: ...0 zero no value is sent after a change Cyclic sending interval TVOC sensor enabled no sending other values in the range 30 s 120 min TVOC control TVOC sensor enabled disabled enabled It enables the CO...

Страница 28: ...dow contact X X 1 2 Presence sensor X X 1 2 Card holder contact Digital sensors timeout 7 4 1 Parameter and communication object tables Parameter name Conditions Values Room temperature disabled enabl...

Страница 29: ...rval Coil temperature enabled no reading other values in the range 30 s 120 min Floor surface temperature disabled enabled It enables a bus sensor for measuring the surface temperature of a floor heat...

Страница 30: ...sensor for detecting the presence absence of people within a room Signal Presence sensor 1 enabled not inverted inverted Cyclic reading interval Presence sensor 1 enabled no reading other values in th...

Страница 31: ...pm 139 Antistratification temperature from bus enabled 2 bytes C WTU 9 001 temperature C 23 Outdoor temperature from bus enabled 2 bytes C WTU 9 001 temperature C 24 Coil temperature from bus enabled...

Страница 32: ...ontrol system of the thermostat cyclically monitors the updating status of the values of the external sensors from bus and the inputs when the timeout setting expires In case no updated value has been...

Страница 33: ...change Cyclic sending interval no sending other values in the range 30 s 120 min Object name Conditions Dim Flags DPT Comm Obj No Weighted temperature Internal sensors temperature sensor enabled Exter...

Страница 34: ...the signalling LEDs LED L1 and L2 temperature control disabled enabled If disabled the LEDs are always off LED L3 and L4 humidity control disabled enabled If disabled the LEDs are always off LED L5 a...

Страница 35: ...7 7 1 Settings The Settings folder includes the following parameters Setpoint type Thermostat function Command Communication Object unique or separated 2 or 4 pipes systems Heating cooling cyclic send...

Страница 36: ...omatically by another KNX supervising device with the possibility of time scheduling The actual setpoint value takes also into account the actual state of the contacts window and presence detection if...

Страница 37: ...a bus device with function of supervisor The operating mode received through this communication object can be later modified by the user in this case the room thermostat switches to manual mode HVAC...

Страница 38: ...abled The automatic switch over is realised with the introduction of a neutral zone according to the scheme shown in Picture 7 Until the actual measured temperature is located below the setpoint value...

Страница 39: ...3 Valve protection function The function is suitable for heating and cooling systems that use water as thermal conveying fluid and are provided with motorized valves for the interception of a zone or...

Страница 40: ...cation The communication objects shown in figure allow to monitor the operating mode comfort standy economy and building protection modifications performed in manual or forced mode or the operating mo...

Страница 41: ...or temperature limitation Temperature limit C Hysteresis K Auxiliary heating Communication object Disabled from bus Offset from setpoint Hysteresis K Cyclic sending interval Ventilation for auxiliary...

Страница 42: ...nels ceiling radiant panels Control type 2 point hysteresis below above The above hysteresis is suitable in case of special applications requiring mixing group control Cyclic sending interval Control...

Страница 43: ...mostat Temperature limit C Floor temperature limitation enabled 29 range 20 40 According to EN 1264 a maximum allowed temperature is prescribed for the surface of a floor heating system T sup max 29 C...

Страница 44: ...C 46 Comfort setpoint heating Setpoint type absolute or relative 2 bytes CRWTU 9 001 temperature C 46 Standby setpoint heating Setpoint type absolute 2 bytes CRWTU 9 001 temperature C 48 Offset standb...

Страница 45: ...al zones are strips generally located along the external walls with a maximum width of 1 m The floor heating system electrically powered version involves the laying under the floor coating of an elect...

Страница 46: ...e project Anticondensation hysteresis range Delay for alarm signal Auxiliary cooling Disabled from bus Offset from setpoint Hysteresis K Cyclic sending interval Ventilation for auxiliary cooling 7 7 3...

Страница 47: ...applications requiring mixing group control Cyclic sending interval Control type 2 point hysteresis or continuous no sending other values in the range 30 s 120 min Proportional band 0 1 K Control type...

Страница 48: ...her values in the range 14 C 20 C Only displayed if the flow temperature from external sensor from bus is not enabled Anticondensation hysteresis range Active anticondensation enabled project temperat...

Страница 49: ...Command Communication Object separated Control type continuous 1 byte CR T 5 001 percentage 0 100 57 Auxiliary cooling output command Auxiliary cooling enabled 1 bit CR T 1 001 switch 59 Auxiliary co...

Страница 50: ...the room cooling circuit when the actual measured flow temperature and received via bus from a different KNX device is lower than dew point temperature calculated by the room thermostat using tempera...

Страница 51: ...es this value with the flow temperature and if necessary modifies the mixing conditions in order to prevent the risk for condensation formation The proper anticondensation protection mode needs to be...

Страница 52: ...g radiant panels and Heating Ventilation for auxiliary heating enabled Cooling Cooling type floor radiant panels or ceiling radiant panels and Cooling Ventilation for auxiliary cooling enabled This wa...

Страница 53: ...arameter not depending on the temperature the fan speed set by the user is not changed even when the temperature setpoint is reached if the parameter depending on the temperature the fan stops when th...

Страница 54: ...sidual heat or cool present in battery for the thermal exchange The function is active in both seasonal modes heating and cooling Cyclic sending interval no sending other values in the range 30 s 120...

Страница 55: ...rgy waste and discomfort for the occupants at the same time The function opposes to the air stratification forcing the warm air downwards The antistratification function requires rooms of great height...

Страница 56: ...ating and cooling with radiant panels through separate valves and an auxiliary stage for heating and cooling fan coil through combined valves The offset of the auxialiary stage for cooling is set to t...

Страница 57: ...lation folder is 1 2 or 3 speeds C O s with DPT 5 010 counter pulses accept the following values 0 OFF 1 speed 1 2 speed 2 if Control Type 1 speed 3 speed 3 if Control Type 2 speed If Control Type par...

Страница 58: ...ort conditions of radiant panel cooling systems equipped with integration of latent heat starting of dedicated terminals without modification of cooling water flow temperature Use for safety control i...

Страница 59: ...ling type floor radiant panels or ceiling radiant panels Relative humidity dehumidification dehumidification function cooling only no yes Dehumidification start delay Subordinated to temperature contr...

Страница 60: ...tion both heating and cooling Temperature control cooling cooling type floor radiant panels or ceiling radiant panels Relative humidity control dehumidification dehumidification function cooling only...

Страница 61: ...ly Temperature control Settings Thermostat function heating disabled cooling only Parameter that selects the humidification function Humidity setpoint Humidification function disabled 35 range 20 80 H...

Страница 62: ...he bus allows to implement an active anticondensation protection with recalibration of the flow conditions of the conveying fluid if each mixing group has its own control device If the thermostat is i...

Страница 63: ...1 along with the related value ppm and hysteresis Threshold 2 along with the related value ppm and hysteresis Threshold 3 along with the related value ppm and hysteresis CO2 alarm function with the r...

Страница 64: ...bit value 1 byte unsigned value 1 byte percentage x 1 2 3 CO2 Threshold x value below Type below only below and above Communication object dimension 1 bit value Off on x 1 2 3 CO2 Threshold x value a...

Страница 65: ...ange 0 255 x 1 2 3 CO2 Threshold x percentage Communication object dimension 1 byte percentage Lock enable yes Behaviour at lock send value 0 range 0 100 x 1 2 3 CO2 Threshold x Behaviour at bus recov...

Страница 66: ...steresis Threshold 2 along with the related value ppb and hysteresis Threshold 3 along with the related value ppb and hysteresis TVOC ventilation Threshold 1 Threshold 2 Threshold 3 7 10 1 1 Parameter...

Страница 67: ...ld x value above Type above only below and above Communication object dimension 1 byte unsigned value 0 range 0 255 TVOC Threshold x percentage below Type below only below and above Communication obje...

Страница 68: ...ious state unlock lock x 1 2 3 Object name Conditions Dim Flags DPT Comm Obj No TVOC threshold x Switch Type not active Communication object dimension 1 bit value 1 bit CR T 1 001 switch 143 145 147 x...

Страница 69: ...put for continuous speed CO2 Max ventilation speed output for continuous speed CO2 ventilation lock Disable ventilation from bus Time scheduled ventilation The following condition has to be true o Int...

Страница 70: ...entilation enabled Communication object dimension 4 single bit values off on x 1 2 3 4 Value threshold 1 CO2 and or TVOC ventilation enabled Communication object dimension 1 byte unsigned value 0 rang...

Страница 71: ...enabled Communication object dimension 1 byte percentage continuous speed 400 ppm other values in the 0 10000 ppm range Max CO2 ppm CO2 ventilation enabled Communication object dimension 1 byte percen...

Страница 72: ...ck unlock Lock value bit x CO2 ventilation enabled Communication object dimension 4 single bit values CO2 ventilation lock enabled Behaviour at lock send value off on x 1 2 3 4 Lock value CO2 ventilat...

Страница 73: ...nt CO2 and TVOC parameters it will be turned on according to the condition foreseen when the most restrictive threshold is exceeded In order to better clarify this behaviour please consider the follow...

Страница 74: ...A All rights reserved Page 74 value deviated by the stagnation of the same air around the sensor Ventilation is switched on for a few minutes in order to let the sensor read a new correct value The p...

Страница 75: ...dedicated to this function is enabled i e if the following condition is verified o External sensors from bus Windows contact sensor 1 and or 2 enabled The Window contacts folder includes the following...

Страница 76: ...meter name Conditions Values Presence sensors function disabled enabled Parameter that enables the presence sensor function Presence sensors use Presence sensor function enabled comfort extension comf...

Страница 77: ...serting the card into the holder Note if Setpoint type is set to single in the Temperature control tab this parameter is set to none since the operating modes are not managed Activation delay on card...

Страница 78: ...esponsible in accordance with the target of energy saving and level of service to be offered to the guests Conventional not KNX card holder With a conventional card holder the status card present or a...

Страница 79: ...bus on event basis i e when the status changes alternatively a cyclic sending can be set 7 13 1 Parameter and communication object tables The following condition has to be true General Logic function...

Страница 80: ...x 1 2 3 4 Object name Conditions Dim Flags DPT Comm Obj No Logic function X Input 1 Logic function X enabled Logic object 1 enabled 1 bit C WTU 1 001 switch 98 103 108 113 118 123 128 133 X 1 8 Logic...

Страница 81: ...e_Humidity 19 Humidity threshold 2 Value 1 bytes from bus 1 byte C W 5 001 DPT_Scaling 20 Thermostat Room temperature from bus 2 bytes C WTU 9 001 DPT_Value_Temp 21 Thermostat Humidity 2 bytes from bu...

Страница 82: ...ng 2 bytes CRWTU 9 001 DPT_Value_Temp 54 Thermostat Disable room temperature controller 1 bit C W 1 001 DPT_Switch 55 Thermostat Room temperature controller status 1 bit CR T 1 003 DPT_Enable 56 Therm...

Страница 83: ...old 1 Percentage 1 byte CR T 5 001 DPT_Scaling 86 CO2 threshold 1 Counter 1 byte CR T 5 010 DPT_Value_1_Ucount 86 CO2 threshold 1 Switch 1 bit CR T 1 001 DPT_Switch 87 CO2 threshold 1 Lock 1 bit C W 1...

Страница 84: ...velopment 2 bytes C WTU 9 020 DPT_Value_Volt 142 Insufficient flow rate alarm not implemented available for future development 1 bit CR T 1 005 DPT_Alarm 143 TVOC Threshold 1 Percentage 1 byte CR T 5...

Страница 85: ...mand is represented by a CO that is transmitted via bus either periodically or event based to a KNX actuator device The output of the actuator device is the driving variable of the control system whic...

Страница 86: ...s are available for the hysteresis value for heating and cooling the values usually differ depending on the system type and its inertia In those applications where floor or ceiling radiant panels are...

Страница 87: ...rst time during ETS configuration and can be modified later on In order to optimize energy saving for each extra degree of room temperature outbound dispersions and energy consumption go up 6 it is po...

Страница 88: ...rtional controller cannot guarantee reaching the Setpoint An integral action is mandatory in order to reach the Setpoint for this reason the integral action is also called automatic reset 9 3 PWM Prop...

Страница 89: ...ime is interrupted the control output is reprocessed and the PWM restarts with a new cycle this allows the system to reach its steady state more quickly Terminal type Proportional Band K Integral Time...

Страница 90: ...ntly a same threshold value will be used for both transitions that lead to each speed from the adjacent ones Picture 16 Picture 17 The diagram on the left in Picture 16 refers to the speed control of...

Страница 91: ...activated when the room temperature value is lower than the value TSet Threshold TS1 Hysteresis and deactivated when the room temperature value reaches the value TSet Threshold TS1 the first speed is...

Страница 92: ...s discrete values according to the hysteresis of the ON OFF windows as shown in the following table Automatic fan speed Fan speed communication objects type 1 001 DPT_Switch Continuous fan speed commu...

Страница 93: ...ional band which has the the same value for both heating and cooling this parameter determines the fan intervention gradient The parameter Min change of value to send is defined in order to limit the...

Страница 94: ...higher inertia The control algorithm used for the second tier system is the 2 points On Off control with hysteresis Heating mode When the measured temperature Teff is lower than the value of the lower...

Страница 95: ...the auxiliary stage intervention offset TOffset which matches the parameter Setpoint difference in Heating and or cooling folder By configuring this parameter which can be different between heating an...

Страница 96: ...e Compatibility with actuators for 6 way valves management such as for example the Belimo LR24A KNX is aimed at applications for climate control The use of 6 way valves allows to control the flow of h...

Страница 97: ...of less than 30 45 15 the valve allows the cold fluid flow 10 2 1 Reversal of the heating cooling control sequence If the connection of the hot side and the cold side is reversed during the assembly o...

Страница 98: ...erent Providing excessive power can lead to unwanted fluctuations in the room temperature Power limitation is generally carried out by means of diaphragms which limit the flow of the heat transfer flu...

Страница 99: ...failure E05 CO coil temperature sensor from bus failure E06 CO floor surface temperature sensor from bus failure E07 CO flow temperature sensor from bus failure W01 CO integrated temperature sensor t...

Страница 100: ...manufacturer at the following address EKINEX S p A Via Novara 37 I 28010 Vaprio d Agogna NO Italy 13 Other information The present Application Manual is addressed to installers system integrators and...

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