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7.2.1

Psychrometric property associated with alarms

ALM1

ALM2

It allows you to configure a psychrometric property that will be associated with alarms

ALM1

ALM2

ALm1

mEAs

ALm2
mEAs

Psychrometric property associated with alarms

ALM1

ALM2

Default:

Temperature

Relative humidity

Dew point temperature

Wet bulb temperature

Absolute humidity

Frost point temperature

Specific enthalpy

Partial vapor pressure

Mixture ratio

Table 10

– Psychrometric property associated with alarms

ALM1

ALM2

7.2.2

Activation mode for alarms

ALM1

ALM2

It allows you to turn off alarms

ALM1

ALM2

or configure them to operate as one of the alarm types indicated below:

ALm1

modE

ALm2
modE

Activation mode for alarm outputs

ALM1

ALM2

Default:

off

Off

oFF

Sets off alarm in case of sensor error

iErr

Sets off alarm below setpoint

SPLo

Sets off alarm above setpoint

Sets off alarm between

SPLo

and

L--k

Sets off alarm below

SPLo

and above

-Lk-

Table 11

– Activation mode for alarm outputs

ALM1

ALM2

7.2.3

Lower Setpoint for activating alarms

ALM1

ALM2

It allows you to configure the set point for alarm types

and

-L

ALm1

spLo

ALm2

spLo

Setpoint lower than alarm outputs

ALM1

ALM2

Min.

Max.

Unit

Default

Min.

Max.

Unit

Default

ALM1

ALM2

for temperature

-40

100

°C

-40

212

°F

-40

ALM1

ALM2

for relative humidity

100

% RH

100

% RH

ALM1

ALM2

for dew point temperature

-90

100

°C

-90 -130

212

°F

-130

ALM1

ALM2

for wet bulb temperature

-40

100

°C

-40

212

°F

-40

ALM1

ALM2

for absolute humidity

600

g/m³

262

gr/ft³

ALM1

ALM2

for frost point temperature

-90

100

°C

-90 -130

212

°F

-130

ALM1

ALM2

for specific enthalpy

-40 700000

kJ/kg

-40

-18 300945

BTU/lb

-18

ALM1

ALM2

for partial vapor pressure

1035

Mbar

psi

ALM1

ALM2

for mixture ratio

0 260000

g/kg

0 1820000

gr/lb

Table 12

– Setpoint lower than alarm outputs

ALM1

ALM2

These values extrapolate the maximum value that can be shown by the display. Using the HMI, you can set up to the limit of 19999. When configured via

NXperience

, these parameters

can be adjusted up to the values shown on the table above, but when accessing these parameters via the HMI, they will display the value

nnnn

Содержание RHT Climate-DM Series

Страница 1: ...NOVUS AUTOMATION 1 48 RHT ClimateTransmitter WM and DM models INSTRUCTION MANUAL V1 2x A Applies to devices with firmware version starting with V1 2x ...

Страница 2: ... PRECAUTIONS WITH SENSORS 11 5 3 2 SENSOR REPLACEMENT 12 6 PARAMETER CYCLES 13 7 CONFIGURATION 14 7 1 ANALOG OUTPUTS 0VT1 0VT2 14 7 2 ALARM OUTPUTS ALM1 ALM2 15 7 3 BUZZER CONFIGURATION CYCLE 19 7 4 HMI CONFIGURATION CYCLE 21 7 5 DIAGNOSTIC CYCLE 23 7 6 COMMUNICATION CYCLE 24 7 7 GENERAL CONFIGURATION CYCLE 25 7 8 INFORMATION CYCLE 27 8 PARAMETERS MAP 28 9 USB INTERFACE 29 10 SERIAL COMMUNICATION ...

Страница 3: ... installing and operating the device CAUTION OR HAZARD Risk of electric shock ATTENTION Material sensitive to static charge Check precautions before handling All safety recommendations appearing in this manual must be followed to ensure personal safety and prevent damage to the instrument or system If the instrument is used in a manner other than that specified in this manual the device s safety p...

Страница 4: ...calculated by the device can be transmitted via one of the two available analog outputs You are also allowed to configure the electrical operating level of each output 0 10 V 4 20 mA Two digital outputs with alarm or control functions can be related to any variable read or calculated by RHT Climate Transmitter The following options are also available RS485 Display with Backlight Audible signal It ...

Страница 5: ...NOVUS AUTOMATION 5 48 3 IDENTIFICATION 3 1 MODELS WITHOUT DISPLAY Fig 01 Device without display 3 2 MODELS WITH DISPLAY Fig 02 Device with display Fig 03 Display indications ...

Страница 6: ... The RHT Climate Transmitter line is available in various device configurations to adapt perfectly to multiple market needs Wall Mount Model WM Recommended for wall mounting Duct Mount Model DM Recommended for duct mounting DM models are available with a stainless steel S sensor probe and with lengths of 150 mm 250 mm or 400 mm The table below shows all available models Model RS485 Display Stainle...

Страница 7: ... Fig 07 Maximum and minimum dew point temperature On the central line the display will show the name of the variable to which the maximum and minimum values refer T Temperature rk Relative humidity td Dew point On the upper line of the display is the MAX symbol followed by the maximum value for that magnitude On the lower line of the display is the MIN symbol followed by the minimum value If no ke...

Страница 8: ...in alarm condition but the output is disabled due to overcurrent protection BUZZER The buzzer may be activated in three conditions o BUZZER output alarm o ALM1 output alarm if the buzzer is enabled in alarm 1 configurations o ALM2 output alarm if the buzzer is enabled in alarm 2 configurations USB Indicates that the device is connected to a USB port COM flashing Indicates that the device is respon...

Страница 9: ...gs in holes Bushings should be completely inserted into the wall Position the transmitter on the wall aiming to align with the perforations and use bolts to secure it to the wall Bolts and bushings do not come with the device The device should be mounted with the sensor capsule facing downward to ensure the specified precision and protection rating Fig 14 Mechanical Installation The RHT Climate Tr...

Страница 10: ...cover insert a screwdriver It is necessary to fit in the lateral handles and to force it lightly until realizing its release The procedure should be repeated on each of the side handles of the device as shown in the figures below With all sides clear the cover can be easily removed Fig 18 Removing the front cover of the transmitter Fig 19 Removing the front cover of the transmitter To install fit ...

Страница 11: ...this model 5 2 3 ELECTRICAL CONNECTIONS Fig 21 RHT Climate electrical connections Connector CN2 is only mounted on models that have RS485 interface Optional 5 2 4 USB CONNECTION Fig 22 USB cable connection 5 3 SENSOR MAINTENANCE 5 3 1 PRECAUTIONS WITH SENSORS The sensor used in the RHT Climate Transmitter is a device that is sensitive to electrostatic discharge ESD Whenever the sensor is touched m...

Страница 12: ...the end of the rod Step 2 Remove the tip by turning it counterclockwise Step 3 Without the tip the sensor will be exposed Remove it by pulling it forward to disconnect it Step 4 Connect the new sensor to the rod tip connector with the aid of plastic tweezers or clean antistatic gloves avoiding pushing or engaging the sensor by hand only Step 5 Place the protection tip again and turn it clockwise t...

Страница 13: ...ut 6 Bv22 Cycle In this cycle are the configuration parameters of the buzzer 7 1kM Cycle In this cycle are the HMI configuration parameters 8 DIAG Cycle In this cycle are the parameters for forcing values of temperature relative humidity and transmission outputs alarm and buzzer 9 0m Cycle In this cycle you can configure parameters related to RS485 Modbus communication 10 nfg Cycle You must enter ...

Страница 14: ...ation to the real values Table 03 Psychrometric properties 7 1 ANALOG OUTPUTS 0VT1 0VT2 The configuration cycle for analog outputs 1 and 2 allows you to assign The psychrometric property associated with the output The default electrical output The value to be shown in case of error in the sensor reading The excursion range of the transmitted psychrometric property Note When the lower limit is defi...

Страница 15: ...0 Dew point temperature 90 100 C 100 130 212 F 212 Wet bulb temperature 40 100 C 100 40 212 F 212 Absolute humidity 0 600 g m 600 0 262 gr ft 262 Frost point temperature 90 100 C 100 130 212 F 212 Specific enthalpy 40 700000 kJ kg 700000 18 300945 BTU lb 300945 Partial vapor pressure 0 1035 mbar 1035 0 15 psi 15 Mixture ratio 0 260000 g kg 260000 0 1820000 gr lb 1820000 Table 07 Upper limit of the...

Страница 16: ...ation The figures in Table 4 show the behavior of alarm outputs with these activation variations defined by the T0n and T0ff time intervals OPERATION T0n T0ff ACTUATION Normal operation 0 0 Alarm Event Alarm Output Activation with set time 1 to 6500 s 0 Alrm Event Alarm Output T0n Delayed activation 0 1 to 6500 s Alarm Event Alarm Output toff Intermittent activation 1 to 6500 s 1 to 6500 s Alarm E...

Страница 17: ...tivation mode for alarm outputs ALM1 ALM2 7 2 3 Lower Setpoint for activating alarms ALM1 ALM2 It allows you to configure the set point for alarm types Lo L k and Lk SI US ALm1 spLo ALm2 spLo Setpoint lower than alarm outputs ALM1 ALM2 Min Max Unit Default Min Max Unit Default ALM1 ALM2 for temperature 40 100 C 40 40 212 F 40 ALM1 ALM2 for relative humidity 0 100 RH 0 0 100 RH 0 ALM1 ALM2 for dew ...

Страница 18: ...f 19999 When configured via NXperience these parameters can be adjusted up to the values shown on the table above but when accessing these parameters via the HMI they will display the value nnnn 7 2 5 Hysteresis for turning off alarms ALM1 ALM2 It allows you to adjust the differential for turning off alarms ALM1 ALM2 SI US ALm1 kyst Alm2 kyst Output hysteresis of alarms ALM1 ALM2 Min Max Unit Defa...

Страница 19: ... 19 Enable buzzer for alarm outputs ALM1 ALM2 7 3 BUZZER CONFIGURATION CYCLE The buzzer configuration cycle allows for assigning the psychrometric property associated with the buzzer the buzzer operating mode type of alarm buzzer activation points their timing values inhibition of alarm condition when turning the device on and the buzzer activation mode in case of sensor reading error 7 3 1 Psychr...

Страница 20: ...00 40 212 F 212 Relative humidity 0 100 RH 100 0 100 RH 100 Dew point temperature 90 100 C 100 130 212 F 212 Wet bulb temperature 40 100 C 100 40 212 F 212 Absolute humidity 0 600 g m 600 0 262 gr ft 262 Frost point temperature 90 100 C 100 130 212 F 212 Specific enthalpy 40 700000 kJ kg 700000 18 300945 BTU lb 300945 Partial vapor pressure 0 1035 mbar 1035 0 15 psi 15 Mixture ratio 0 260000 g kg ...

Страница 21: ... on On Table 28 Buzzer status in case of sensor error 7 4 HMI CONFIGURATION CYCLE The HMI configuration cycle allows for adjusting contrast display backlight operating mode and functions of increase and decrease keys 7 4 1 Backlight It adjusts the display backlight operating mode Table 29 Backlight 7 4 2 Contrast It adjusts the display contrast Depending on the preferred viewing angle the contrast...

Страница 22: ...on of the decrease key 1xM f2 Second function of the decrease key Default nonE None nonE Clear maximum and minimum values Clr Table 32 Second function of the decrease key 7 4 5 Configuring the third line of the display It allows you to configure the information to be displayed on the third line of the display 1xM lin3 Third line of the display Default Td Dew point Td Wet bulb temperature Tw Absolu...

Страница 23: ... FOu1 FOu2 forcing 7 5 2 Temperature reading forcing It allows you to force a temperature value This feature can be used to simulate temperature alarms or alarms for other variables due to change SI US Min Max Unit Default Min Max Unit Default diAG Fi t Forces the temperature reading value 40 100 C 40 40 212 F 40 Table 35 Temperature reading forcing 7 5 3 Relative humidity reading forcing It allow...

Страница 24: ...ERIAL COMMUNICATION nfG BAud Baud Rate 19 2 1200 bps 1 2 2400 bps 2 4 4800 bps 4 8 9600 bps 9 6 19200 bps 19 2 38400 bps 38 4 57600 bps 57 6 115200 bps 115 2 Table 39 Baud rate 7 6 2 Parity This parameter configures the parity for RHT Climate Transmitter communication on a Modbus RTU network nfG Prty Parity Default nonE Without parity nonE Even Parity EVEn Odd Parity Odd Table 40 Parity 7 6 3 Addr...

Страница 25: ... psi but you can refine this information by inserting the value read by another reference instrument Atmospheric pressure may vary according to altitude or due to conditions of the process itself SI US Min Max Unit Default Min Max Unit Default nfG prEs Configures the atmospheric pressure value This value is used for the calculation of psychrometric properties 0 10000 mbar 1013 0 145 psi 14 7 Table...

Страница 26: ...1111 Table 48 Password 7 7 8 Parameter Protection This parameter allows for enabling and disabling the protection of other parameters When parameter protection is enabled the RHT Climate Transmitter will allow for viewing the parameters but will not allow any change to the configured values The device leaves the factor with parameter protection disabled nfG Prot Parameter protection Default Dsbl P...

Страница 27: ...MATION 27 48 7 8 INFORMATION CYCLE In the information cycle the RHT Climate Transmitter displays the serial number Sn and firmware version firm of the device Fig 26 Serial number and firmware version information ...

Страница 28: ... ont F0v2 Prty Unit Firm Maximum relative humidity Minimum relative humidity l lo l lo SpLo SpLo SpLo F1 F1t Addr PrEs Maximum dew point Minimum dew point l xi l xi SPki SPki SPki F2 F1rk FLt Wet bulb temperature Err Err kyst kyst kyst Scrn Lin3 FAl1 FLrk Absolute humidity T0n T0n T0n FAl2 0ft Frost point temp T0ff T0ff T0ff Fb22 0frk Enthalpy bLA bLA bLA PAss Partial vapor pressure Err Err Err pr...

Страница 29: ...vice s communication manual and its supervision software documentation to perform MONITORING Follow the procedure below to use the device s USB communication Download NXperience from our website and install it on your computer see chapter NXPERIENCE SOFTWARE The USB drivers required for communication will be installed along with the software Connect the USB cable between the device and the compute...

Страница 30: ...ure value RO 4000 10000 4000 21200 3 4 Wet bulb temperature value RO 4000 10000 4000 21200 5 6 Dew point value RO 9000 10000 13000 21200 7 8 Frost point value RO 9000 10000 13000 21200 9 10 Specific enthalpy value RO 4000 70000000 1800 30094500 11 12 Absolute humidity value RO 0 60000 0 26200 13 14 Partial vapor pressure value RO 0 103500 0 1500 15 16 Mixture ratio value RO 0 26000000 0 182000000 ...

Страница 31: ...nsmission limit input RW The limits depend on the psychrometric property configured at address 114 118 119 Value in case of error RW 0 1 0 0 1 0 Upper retransmission limit RO The limits depend on the psychrometric property configured at address 114 Lower retransmission limit RO The limits depend on the psychrometric property configured at address 114 Table 53 Analog Output OUT2 Transmission Regist...

Страница 32: ...W 0 1 0 0 1 0 162 Alarm Setpoint High RO The limits depend on the psychrometric property configured at address 150 163 164 Alarm Setpoint Low RO The limits depend on the psychrometric property configured at address 150 165 Table 56 Alarm ALM2 Output Registers ALARM ALM3 OUTPUT REGISTERS Address Description R W Min Max Default Min Max Default 167 Variable that will set off alarm RW 1 9 1 1 9 1 168 ...

Страница 33: ... 1 0 0 1 0 206 Changes alarm status RW 0 1 0 0 1 0 207 Enables forcing of alarm 2 RW 0 1 0 0 1 0 208 Changes alarm status RW 0 1 0 0 1 0 209 Turning backlight on RW 0 2 1 0 2 1 211 Enables buzzing forcing RW 0 1 0 0 1 0 212 Buzzer activation RW 0 1 0 0 1 0 213 Enables humidity forcing RW 0 1 0 0 1 0 214 Forced humidity value RW 0 1000 0 0 1000 0 215 Enables temperature forcing RW 0 1 0 0 1 0 216 F...

Страница 34: ...00 1000 0 400 2120 0 243 Real temperature value 5 RW 400 1000 0 400 2120 0 244 Target temperature value 5 RW 400 1000 0 400 2120 0 245 Enables humidity linearization RW 0 1 0 0 1 0 246 Real humidity value 1 RW 0 1000 0 0 1000 0 247 Target humidity value 1 RW 0 1000 0 0 1000 0 248 Real humidity value 2 RW 0 1000 0 0 1000 0 249 Target humidity value 2 RW 0 1000 0 0 1000 0 250 Real humidity value 3 R...

Страница 35: ...rost point 343 1 Input values for retransmission limits of output 1 out of range 2 Input values for retransmission limits of output 2 out of range 3 Input values for alarm 1 setpoints out of range 4 Input values for alarm 2 setpoints out of range 5 Input values for alarm 3 setpoints out of range Table 65 Diagnostic Registers The registers 103 to 106 115 to 118 135 to 138 152 to 155 and 169 to 172 ...

Страница 36: ...he software the RHT Climate Transmitter must be connected to the computer and with the USB drivers previously installed Then you can click on Configure or Diagnostics The Download option is not available for this device model To read a device you must select it To do so simply double click on the desired device and click the Ok button This device will be adopted as the default for the next time th...

Страница 37: ...e temperature and relative humidity sensor input and perform linearization Output In this tab you can configure the two transmission analog outputs the two alarm outputs and the buzzer HMI In this tab you can configure the information and parameters that will be available on the device display It is also possible to configure the backlight the display contrast the additional function of the naviga...

Страница 38: ...onal system of measures SI or the English system of measures US see the GENERAL CONFIGURATION CYCLE section In the Pressure field the RHT Climate Transmitter allows for configuring atmospheric pressure The device come factory configured with a pressure valor equal to atmospheric pressure at sea level The values of psychrometric properties calculated by the RHT Climate Transmitter may undergo varia...

Страница 39: ...ement field the psychrometric property to be transmitted by the analog output can be selected The analog output Mode allows for selecting the electrical standard to be used for transmission 0 10 V or 4 20 mA The electrical signal from the output will be proportional to the selected variable abiding by the values configured for Lower Limit and Upper Limit In case of sensor failure the variable to b...

Страница 40: ...example is an application in which an environment needs to be kept cool Supposing that the alarm is configured to go off when temperatures is lower than 10 C or higher than 2 C if the initial environment temperature is 25 C when the RHT Climate Transmitter is turned on the alarm will be activated To inhibit this initial activity you can enable Initial alarm blocking With initial blocking enabled t...

Страница 41: ...eens Fig 38 Cycle View The device keys and in addition to the increase decrease and option selection functions may have a second function that adds more versatility to the device The figure below shows the configuration interface for this feature in NXperience Fig 39 Keyboard For the key the second function can be selected among these options None Blocks buzzer Blocks buzzer and alarm output If th...

Страница 42: ...r 15 seconds the backlight will turn off automatically The RHT Climate Transmitter display allows for setting five contrast levels that favor viewing of display information from different viewing angles To select the best angle click on the desired angle value It is also possible to configure the information to be displayed on the third line of the display as shown in the 3RD Line Information para...

Страница 43: ... By clicking on the icon the software will display the screen below and you can send the configuration to the device save the configurations in a file update the device firmware and configure a password to protect the device Fig 41 Finalization parameters ...

Страница 44: ...metric properties displayed with two decimal places In addition it is also possible to force a value of temperature or relative humidity with one decimal place To force a value use the slider or type the input value for temperature or relative humidity and then press the button Fig 42 Diagnostics parameters In the example shown on the screen below the value of 18 C is being forced in the temperatu...

Страница 45: ...forcing the set value at the transmission output Note that the button that was used for forcing changed to If you press the key again the forced value is no longer applied to the output In the example on the screen below the 10 0 mA value is being forced at analog output 1 Fig 45 Output 1 For each analog output transmission of an error value can also be forced via buttons and These values depend o...

Страница 46: ...st power supply voltage reverse polarity Maximum power supply current 70 mA 10 24 Vdc 0vt1 0vt2 Output They may be configured independently to operate with signals 0 10 V or 4 20 mA 0 10 V o Maximum current 2 mA o Resolution 0 003 V 4 20 mA o 500 R maximum load o Resolution 0 006 mA Alm1 Alarm alm2 Alarm Channel N 30 V 200 mA type output Protection against current 200 mA Current protection reset t...

Страница 47: ...NOVUS AUTOMATION 47 48 13 WARRANTY Warranty conditions are available on our website www novusautomation com warranty ...

Страница 48: ...ulb covered by a mesh usually cotton that is submerged in a recipient containing distilled water Water evaporation draws out heat from the bulb making the wet bulb thermometer indicate a temperature lower than the ambient air Evaporation consumes heat causing cooling This evaporation and consequently the wet bulb temperature is greater when the atmospheric air is drier and is null when the atmosph...

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