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GHM Delta OHM HVAC40 Series, Operating Manual, Page: 2 / 26

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GHM Delta OHM HVAC40 Series Operating Manual Download Page 2

 

HVAC40…

 

-   2   -

  

V1.1

 

TABLE OF CONTENTS 

1

 

INTRODUCTION .................................................................................................... 3

 

2

 

TECHNICAL CHARACTERISTICS ............................................................................ 4

 

3

 

INSTALLATION ..................................................................................................... 7

 

3.1

 

E

LECTRICAL CONNECTIONS

 ..................................................................................... 9

 

3.2

 

C

ONFIGURATION DIP SWITCHES IN THE MODELS WITH ANALOG OUTPUT

 ................................ 10

 

3.3

 

C

ONFIGURATION DIP SWITCHES IN THE MODELS WITH 

RS485

 DIGITAL OUTPUT

 ...................... 11

 

3.4

 

C

ONFIGURATION DIP SWITCHES IN THE MODELS WITH RELAY OUTPUT

 .................................. 11

 

3.5

 

C

ONFIGURATION VIA THE SERIAL PORT

 ...................................................................... 12

 

3.6

 

C

ONFIGURATION VIA THE INTERNAL BUTTONS 

(

ONLY 

HVAC40R17…) ................................ 16

 

4

 

ALARM OPERATING MODES (HVAC40R17…) ....................................................... 18

 

5

 

MODBUS-RTU (HVAC40S17…) ............................................................................ 20

 

6

 

INSTRUMENT STORAGE ...................................................................................... 21

 

7

 

SAFETY INSTRUCTIONS ...................................................................................... 21

 

8

 

ORDERING CODES .............................................................................................. 22

 

Summary of Contents for Delta OHM HVAC40 Series

Page 1: ...Operating manual Humidity and temperature transmitters Hygrostats HVAC40 series www deltaohm com English Keep for future reference Companies Brands of GHM ...

Page 2: ...OUTPUT 10 3 3 CONFIGURATION DIP SWITCHES IN THE MODELS WITH RS485 DIGITAL OUTPUT 11 3 4 CONFIGURATION DIP SWITCHES IN THE MODELS WITH RELAY OUTPUT 11 3 5 CONFIGURATION VIA THE SERIAL PORT 12 3 6 CONFIGURATION VIA THE INTERNAL BUTTONS ONLY HVAC40R17 16 4 ALARM OPERATING MODES HVAC40R17 18 5 MODBUS RTU HVAC40S17 20 6 INSTRUMENT STORAGE 21 7 SAFETY INSTRUCTIONS 21 8 ORDERING CODES 22 ...

Page 3: ...urrent analog output HVAC4017 2 wire current loop 4 20 mA analog output HVAC40A17 ON OFF relay switch HVAC40R17 Versions with 4 digit LCD display option L are available which allow the measured parameters to be displayed In the versions with LCD two LED indicators indicate the presence of the power sup ply and of an eventual alarm condition exceeding of the set measurements thresh olds in the vers...

Page 4: ...thresholds in HVAC40R17 models measurement detected outside the measuring range in the other models Internal buzzer in HVAC40R17 models Power supply HVAC4017 and HVAC40V17 24 Vac 10 or 18 40 Vdc HVAC40A17 15 30 Vdc HVAC40S17 12 30 Vdc HVAC40R17 24 Vac 10 or 15 36 Vdc Power consumption HVAC4017 20 mA 24 Vdc and Iout 12 mA HVAC40V17 4 mA 24 Vdc HVAC40S17 2 mA 24 Vdc HVAC40R17 1 W 24 Vdc Electrical c...

Page 5: ...mperature DP C 20 10 0 10 20 30 40 60 80 Temperature C 20 1 10 1 1 0 1 1 1 DP LIMIT 10 3 1 1 1 20 4 2 1 1 1 30 3 1 5 1 1 1 40 NOT SPECIFIED 2 1 1 1 60 5 2 5 2 1 1 80 4 2 1 1 For example at 20 C environmental temperature the Dew Point value of 0 C is measured with an ac curacy better than 1 C DIMENSIONS mm HVAC40 17TC 2 ...

Page 6: ...HVAC40 6 V1 1 HVAC40 17TO HVAC40 17TV ...

Page 7: ...nt directly to a panel or to the wall The models with duct horizontal probe can be fixed by using the HD9008 31 flange a PG16 metal cable gland 10 14 mm or a 3 8 universal biconical connection HD9008 31 Flange PG16 metal cable gland D 10 14 mm L 6 5 mm H 23 mm A PG16 Universal biconical connector L 35 mm D 14 mm A 3 8 HD9008 31 ...

Page 8: ...connector COM AUX except HVAC40S17 the dip switches for quick configuration the buttons for the configuration via display only HVAC40R17 Models with active analog output HVAC4017 and HVAC40V17 Models with 2 wire current output HVAC40A17 Models with digital RS485 output HVAC40S17 Models with relay switch output HVAC40R17 ...

Page 9: ...ommon Line ter mination must be set at the two network ends The maximum number of devices that can be connected to the RS485 line Bus de pends on the load characteristics of the devices to be connected The RS485 standard requires that the total load does not exceed 32 unit loads The load of an HVAC40S17T transmitter is equal to of unit load If the total load is greater than 32 unit loads divide th...

Page 10: ...ent interferences on the transmitted signal 3 2 CONFIGURATION DIP SWITCHES IN THE MODELS WITH ANALOG OUTPUT HVAC4017T HVAC40A17T and HVAC40V17T transmitters have 4 preconfigured temperature ranges for the analog output In order to use a preconfigured tempera ture range it is necessary to set the dip switch 1 to ON and set the temperature range with the dip switches 2 and 3 according to the followi...

Page 11: ...o ON and the dip switches 3 5 and 6 are set to OFF the value set with the dip switches is 8 2 10 If the value set with the se rial command MA is 1 default value the transmitter Modbus address is 10 1 11 The dip switches can be set even if the transmitter is powered and the change is ef fective immediately Note in the models with RS485 digital output the selection of the relative humidity or dew po...

Page 12: ... the CAL START command The CAL START command enables the use of some commands specified in the tables below The command CAL START is automatically disabled after 5 minutes of inactivity or if the CAL END command or an incorrect command is sent 5 Send the setting or reading commands given below 6 Only for HVAC40S17T models power cycle the instrument to restore the MODBUS RTU protocol Serial command...

Page 13: ...decimal point and in the sequence temperature relative humidity and dew point Example of reply 00230 C 264 00032 Td C 23 0 C 26 4 UR 3 2 C Td Analog output only HVAC4017 HVAC40A17 and HVAC40V17 models Command Description U0 Sets 0 20 mA as current analog output U1 Sets 4 20 mA as current analog output default AIsnnn Associates the initial scale of temperature analog output with snnn s is the sign ...

Page 14: ...an threshold 1 n 1 Below threshold alarm is on if measurement is less than threshold 1 n 2 Outside thresholds alarm is on if measurement is less than threshold 1 or greater than threshold 2 Default Above threshold ARE Reads the alarm operating mode AWT1snnn Sets the threshold 1 value to snnn s is the sign of the value Default 300 30 0 RH ART1 Reads the threshold 1 value AWT2snnn Sets the threshold...

Page 15: ...tion if n 0 violates protocol Waiting 3 5 characters if n 1 default respects protocol L4 Reads the setting of waiting time after MODBUS transmission Relative humidity calibration The commands starting with R require prior sending of the CAL START command Command Description GC Reads the calibration type in use factory or user GD Reads the factory calibration date format yyyy mm dd hh mm ss GE Read...

Page 16: ...s on if measurement is greater than threshold 1 o Below threshold FALL alarm is on if measurement is less than threshold 1 o Outside thresholds OUTS alarm is on if measurement is less than threshold 1 or greater than threshold 2 Threshold 1 THR1 Value of the threshold for above RISE and below FALL alarm operating modes value of the lower threshold for outside thresholds OUTS alarm operating mode T...

Page 17: ...ical parameters Select the parameter by using the button B1 Short press the button B2 to change the sign Long press the button B2 to select the first digit Short press the button B2 to change the selected digit Long press the button B2 to select the next digit Repeat the above two steps until all the digits are set Long press the button B1 to move to the next parameter While a parameter value is d...

Page 18: ...is turned on if the measurement is less than threshold 1 for more than T1 seconds The alarm is turned off when the measurement becomes greater then threshold 1 plus the hysteresis for more than T2 seconds The down arrow on the left of the display is shown when this mode is selected Outside thresholds OUTS the alarm is turned on if the measurement is greater than threshold 2 or less than threshold ...

Page 19: ...ights up the buzzer is on if ena bled and the relay is switched depending on the chosen relay operating mode While in alarm the buzzer can be stopped only for the current event by short press ing the button B1 The alarm is disabled while in the configuration menu ...

Page 20: ...n below Input Registers Register number Register address Datum Format 1 0 Temperature in C x10 16 bit integer 2 1 Temperature in F x10 16 bit integer 3 2 Relative Humidity in x10 16 bit integer 4 3 Dew Point in C x10 16 bit integer 5 4 Dew Point in F x10 16 bit integer 6 5 Status register Bit 0 1 temperature measurement error Bit 1 1 relative humidity measurement error Bit 2 1 dew point measuremen...

Page 21: ...ory use and has left the factory in perfect safety tech nical conditions The instrument proper operation and operating safety can be ensured only if all standard safety measures as well as the specific measures described in this manual are followed The instrument proper operation and operating safety can be ensured only in the cli matic conditions specified in this manual Do not use the instrument...

Page 22: ...the PC RS48 Cable for RS485 connection with built in USB RS485 converter The ca ble has USB connector for PC and 3 separate wires for the instruments HD33 33 RH saturated solution for checking the relative humidity sensor complete with screw adaptor for probes 14mm M12 1 thread HD75 75 RH saturated solution for checking the relative humidity sensor complete with screw adaptor for probes 14mm M12 1...

Page 23: ......

Page 24: ...ed third parties is excluded from the guarantee The instrument shall be returned FREE OF SHIPMENT CHARGES to your dealer The jurisdiction of Padua applies in any dispute The electrical and electronic equipment marked with this symbol cannot be disposed of in public landfills According to the Directive 2011 65 EU the european users of electrical and electronic equipment can return it to the dealer ...

Page 25: ...he result of the constant development of the product This may produce some differences between the information written in this manual and the instrument you have purchased We cannot completely exclude the possibility of errors in the manual for which we apologize The data images and descriptions included in this manual cannot be legally asserted We reserve the right to make changes and corrections...

Page 26: ...GHM GROUP Delta OHM Delta Ohm S r l a socio unico Via Marconi 5 35030 Caselle di Selvazzano Padova ITALY Phone 39 049 8977150 Fax 39 049 635596 www deltaohm com info deltaohm com V1 1 23 07 2020 ...

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