Related Manuals for Delta OHM HD45 17V
Summary of Contents for Delta OHM HD45 17V
- Page 1 English Operating manual Transmitters / regulators HD45 – HD46 Companies / Brands of GHM www.deltaohm.com Keep for future reference.
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Page 2: Introduction
1. INTRODUCTION The instruments of the HD45 and HD46 series are transmitters, indicators and regulators suitable for measuring and monitoring the following environmental parameters, depending on the model: • Relative humidity (RH) • Ambient temperature (T) • Carbon dioxide (CO •... - Page 3 HD46 series models can be provided with a keyboard that allows easy instrument setup even if not connected to a PC. Models provided with keyboard have a display with backlight that can be enabled by a simple key pressure. Models of the series HD45 provided with relay have a hardware switch that allows quick selection of the threshold between a set of preset values.
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Page 4: Instruments Versions Available
1.1 Instruments versions available Serie HD45 Analog RS485 Relay Model Keys output output output HD45 17V √ √ √ (2) Power HD45 17A √ √ √ (2) Power HD45 17S √ √ √ Power HD45 17R √ √ √ (1) - Page 5 Serie HD46 Analog RS485 Relay Model Keys output output output HD46 17V √ √ √ (2) Power HD46 17A Power √ √ √ (2) HD46 17S Power √ √ √ HD46 17R Power √ √ √ (2) RH,T HD46 17SR Power √...
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Page 6: Front Panel Description
2. FRONT PANEL DESCRIPTION HD45… HD45 BVR and HD45 BAR (except for HD45 BVR and HD45 BAR) “Air Quality” “POWER” LED LED indicators HD45…D… only Serial output with Serial output with mini-USB connector mini-USB connector “Temperature” LED HD46… HD46…R only “CO ”... - Page 7 “POWER” LED Indicates power supply state. In models without display, it flashes if a fault occurs. LCD Display It simultaneously displays all values measured by the instrument. LED level indicators They show air quality level. In HD45 BVR and HD45 BAR models only. “Humidity”...
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Page 8: Installation And Connection
3. INSTALLATION AND CONNECTION The choice of the number of transmitters to be used for a typical installation and their location depends on multiple factors, among which the dimensions of the breathing space to be monitored, the distribution of people in the environment and the presence of a forced air system. - Page 9 Fig. 3.B: Fixing the instrument base After fixing the base, proceed with the connection of the transmitter as shown in the connection diagrams below. In order to make connection procedures easier, the connection diagram of each model is impressed also at the interior of the base. Once the connection procedure is completed, put the front panel in place again, making sure that the upper and lower tabs are correctly inserted in their slots (Fig.
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Page 10: Hd45
3.1 HD45… connection diagrams - 10 - HD45 / HD46 V2.4... -
Page 11: Hd46
3.2 HD46… connection diagrams - 11 - HD45 / HD46 V2.4... -
Page 12: Operation Mode
4. OPERATION MODE After installing and connecting the transmitter as shown in section INSTALLATION AND CONNECTION, supply the instrument with the correct voltage. A wrong power supply may cause permanent damage to the instrument. “POWER” LED activation indicates that the instrument is being powered. In models provided with a display, the indication of the transmitter model and firmware version are displayed and, after a few seconds, measures are shown. -
Page 13: Analog Outputs
4.1 Analog outputs HD45…V…, HD45…A…, HD46…V and HD46…A models have an analog voltage or active current output for each measured value on the instrument. The output range default value is 0…10V (for V models) or 4…20mA (for A models), and default correspondence between output and range is as follows: Tab. - Page 14 • Simplified mode: the relay functions with a single threshold, that can be selected from a series of fixed values via a rotary switch. • Complete mode: the relay may function with one or two thresholds that can be freely set via a PC. Toggling between the two modes is made by means of a rotary selector placed on the instrument electric board, between the terminal board and the mini-USB connector.
- Page 15 If the selector in a position other than zero, hysteresis is preset to 100 ppm. Hysteresis and intervention mode can be changed via software (see section “CONFIGURATION”). Please note, however, that hysteresis and intervention mode with the rotary selector in zero position differ from hysteresis and intervention mode with the rotary selector in position other than zero.
- Page 16 In simplified mode, if the instrument is supplied with display and keyboard, thresholds can easily be viewed and changed by pressing the MENU key (for least than 2 seconds). The threshold values of the quantities measured by the instrument are shown on the display.
- Page 17 At the end, press ESC to return to the measuring mode. The instrument will automatically go back to the measuring mode if you don’t press any key for 30 seconds. The quick setting mode is not protected by an access code and thresholds can be changed only within predetermined limits, that shall be set with the following values: Tab.
- Page 18 If threshold A value is greater than threshold B value, the contact is closed if the measuring value rises above threshold A value or falls below threshold B value. The contact is open if the measuring value is within the two threshold values. If threshold A value is lower than threshold B value, the contact is open if the measuring value rises above threshold B value or falls below threshold A value.
- Page 19 7. Relay activates above threshold A with hysteresis The contact closes when the measuring value rises above threshold A value. The contact opens if the measuring value falls below the threshold minus the hysteresis (A-H). 8. Relay activates above threshold A and below threshold B with hysteresis Relay action is different depending if threshold A value is greater or lower than threshold B value.
- Page 20 If threshold A value is lower than threshold B, the contact opens if the measuring value rises above threshold B value or falls below threshold A value. The contact closes if the measuring value is within the interval ranging between threshold A plus the hysteresis (A+H) and threshold B minus the hysteresis (B-H).
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Page 21: Led Indicators In Hd45 Bvr And Hd45 Bar Model
4.3 LED indicators in HD45 BVR and HD45 BAR models HD45 BVR and HD45 BAR models are supplied with four LEDs which show the air quality level. The passage from a level to the other is established based on the values of three thresholds, preset to the following values. -
Page 22: Indicating A Fault
The logging interval can be set to 1 minute or 30 seconds. For the interval change mode, see section “CONFIGURATION”. 4.5 Indicating a fault All models have an error signal mode. Models with display indicate an error condition by displaying an “E” on a black background, alternated to the error code, on bottom left of screen. -
Page 23: Configuration
USB connector for the PC. For a correct connection, USB drivers included in the DeltaLog14 software package (the software can be downloaded from the Delta OHM website) must be installed in your PC. Attention: the serial connection will not work if the instrument is directly connected to a PC by means of a standard mini-USB/USB adaptor cable. -
Page 24: Authorization Levels
5.1 Authorization levels For the instrument configuration parameters setup, various authorization levels have been planned, so as to prevent any changes to the instrument functions by non- authorized personnel. Each parameter is associated with an authorization level, which can differ from that of other parameters. The following authorization levels have been provided: Level 0: operator level. -
Page 25: Configuration Through Keyboard (Hd46
5.2 Configuration through keyboard (HD46…DT… only) In models with keyboard, press and hold the MENU key for at least 2 seconds to access the configuration mode, until the message “Press MENU to edit parameters” appears on the display. To access as operator (level “0”), simply press the MENU key. The only viewable parameters will be those in level “0”. - Page 26 The complete list of the available parameters is indicated in Tab. 5.A (page 29). ▼ ▲ Select the desired parameter with “ ” and “ ” keys. To quickly scroll through the list, press and hold one of the two arrow keys. The parameter value is preceded by the indication (d) if expressed in decimals, or by (h) if expressed in hexadecimals.
- Page 27 ▼ ▲ Use the “ ” and “ ” keys to increment or decrement the value. Confirm by pressing the MENU key, the cursor disappears. At this point, you can scroll again through the parameter list with the arrow keys. Changing the protection level ▼...
- Page 28 ▼ ▲ Use the “ ” and “ ” keys to increment or decrement the value. Confirm by pressing MENU, the cursor disappears. At this point, you can scroll again through the parameter list with the arrow keys. The authorization level can be changed only if you are in configuration mode as administrator, that is through an access code.
- Page 29 interval, the instrument directly accesses configuration mode without asking the access code. The access code condition is shown by an “M” displayed on left top of the screen. To disable the access code before the 5-minute interval has elapsed, press and hold the MENU key for at least 2 seconds, until the message “Press MENU to edit parameters”...
- Page 30 Temperature analog output (°C) DESCRIPTION VALUE DEFAULT NOTE Minimum °C temperature that can MIN: -300 (-30.0°C) -300 MAX: P#012 be associated to minimum scale analog output (x10) °C temperature at minimum scale MIN: P#011 -200 analog output (x10) MAX: P#013 – P#015 °C temperature at 10V or 20mA MIN: P#012 + P#015 analog output (x10)
- Page 31 Humidity analog output (T °C) DESCRIPTION VALUE DEFAULT NOTE Minimum °C dewpoint that can be MIN: -400 (-40.0°C) -400 MAX: P#027 associated to minimum scale analog output (x10) °C dewpoint at minimum scale MIN: P#026 -300 analog output (x10) MAX: P#028 – P#030 °C dewpoint at 10V or 20mA MIN: P#027 + P#030 analog output (x10)
- Page 32 Relay outputs DESCRIPTION VALUE DEFAULT NOTE Relay operating mode in HD45 00: always disabled models and CO relay operating 01: active below threshold B 02: active over threshold A mode HD46 models with simplified mode disabled. 03: active over threshold A and below threshold B In HD45 models, this is the mode with 05: active below threshold B...
- Page 33 Relay outputs DESCRIPTION VALUE DEFAULT NOTE Hysteresis relay in HD45 and CO Over the whole range (3),(4) relay in HD46 ( HD45 B, HD46) In HD45… models it is the hysteresis when the rotary selector is in position 0 ( HD45 17, Value is in ppm if associated with CO HD45 7B) Value is x10 if associated with humidity...
- Page 34 Relay outputs DESCRIPTION VALUE DEFAULT NOTE Ppm threshold for CO relay in Over the whole range HD46 models with simplified mode enabled. Temperature relay threshold (X10) Over the whole range (3),(4) in HD46 models with simplified mode enabled. Humidity relay threshold (X10) in Over the whole range (3),(4) HD46 models with simplified mode...
- Page 35 Note: the parameters which are not included in Tab. 5.A are not used and cannot be entered. The instrument always lists all parameters included in Tab 5.A, even if some of these are not scheduled for that particular model, for example because it has no analog outputs or no relays.
- Page 36 ▲ 9. Select parameter P#049 with the “ ” key, then press MENU twice to access Edit mode. ▼ ▲ 10. Change P#049 value to 600 with the “ ” and “ ” keys, then press MENU to confirm. ▲ 11.
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Page 37: Calibration
6. CALIBRATION Instruments are factory-calibrated and normally don’t require further interventions by the user. The relative humidity and temperature sensors user calibration is not foreseen. In HD46… models, relative humidity and temperature sensors, along with stored calibration data, are included in a module that can be easily replaced by a new one (HDM46 code). -
Page 38: Co2 Sensor Calibration
6.2 CO sensor calibration sensor calibration check can be performed every three/four years. For a correct sensor calibration, it is crucial to know and respect the physical phenomena that represent measurement bases: for this reason, we recommend to thoroughly follow the information below and to perform new calibrations only if in possession of adequate technical knowledge. -
Page 39: Communication Protocol (Mini-Usb Output)
7. COMMUNICATION PROTOCOL All models are supplied with a serial output with mini-USB connector, that allows you to upload commands and to download data through your PC using communication programs, such as – for example - Hyperterminal. Connect the serial output located on the instrument side to a USB port of your PC via the special RS45 or RS45I connection cable, which is supplied with a built-in USB adaptor and mini-USB connector to the instrument end, and a USB connector to the PC end. -
Page 40: Rs485 Communication
For the available parameter list, refer to Tab. 5.A (page 29). In measurement continuous printing, values are the average computed on a number of measurements equal to the number set for parameter P#002. In models supplied also with a RS485 output, both serial outputs can be connected at the same time, but the transmitters support only one communication channel at a time. -
Page 41: Modbus-Rtu Protocol
• Characteristic impedance: 120 ohm • Capacity: less than 50pF/m • Resistance: less than 100 ohm/km • gauge: 0,22 mm (AWG24) at least If more than 32 devices have to be connected (that is, 31 instruments plus the Master unit), place a signal repeater between a group and the next one. The line termination must be connected at both ends of each segment. - Page 42 • Address: address of the transmitter for command transmission. Length = 1 byte • Function: type of operation to be performed by the transmitter (for example, a parameter setup). Length = 1 byte • Data: Data communicated to the transmitter (for example, a parameter value).
- Page 43 After processing the received command, the instrument will send a response to the PC, transmitting the requested data or only confirming the command execution if data transfer has not been requested. The response structure is identical to that of the message sent by the “Master”...
- Page 44 Relays state reading (function 01h) Function code 01h allows to read the relays activation state of the instrument. The relays state can only be read, there are no commands available for relay state modification. The register address for the first relay state and the number of consecutive relays to be read are indicated in the request data field.
- Page 45 Example: You want to read the current state of the three relays in a HD46 17BR model, and only the temperature relay is active: You will have to include in the request: • address (= number -1 ) of first relay register (0003 = 0003h) •...
- Page 46 Response Value Length Description Function: 1 byte Parameters reading command Data: 2 x N 1 byte Number of bytes for the values 2 x N bytes Parameters values A parameter value is stored in a 16-bit register and consequently requires always a 2-byte length.
- Page 47 Register From Parameter Format Notes number Ver. 0042 P#003 Reference CO [ppm] Int 16 bits 1.00 0043 P#004 Atmospheric pressure [hPa] Int 16 bits 1.00 0044 P#005 Logging interval 8 bits (LSB) 1.00 0045 P#006 Temperature measurement unit 8 bits (LSB) 1.00 0046 P#007 Humidity measurement unit...
- Page 48 Register From Parameter Format Notes number Ver. 0076 P#037 CO (ppm) at analog output minimum Int 16 bits 1.00 scale 0077 P#038 CO (ppm) at 10V or 20mA Int 16 bits 1.00 0078 P#039 Max. CO (ppm) at 10V or 20mA Int 16 bits 1.00 0079...
- Page 49 Register From Parameter Format Notes number Ver. 0108 P#066 Humidity relay operation mode in HD46 8 bits (LSB) 1.07 models with simplified mode enabled 0109 P#085 CO relay threshold (ppm) HD46 Int 16 bits 1.07 models with simplified mode enabled 0110 P#086 Temp.
- Page 50 Example: Let’s take into account an instrument having the following settings for the relative humidity analog output: 0V = 20.0% RH ; 10V = 80.0% RH. From Table 8.C we obtain that the two parameters are stored in registers number 0061 and 0062, respectively.
- Page 51 Measurements reading (function 04h) Function code 04h allows to read the values measured by the instrument. The input register address containing the first quantity and the number of consecutive quantities to be read are indicated in the request data field. Since, in the protocol, registers are numbered starting from 1, but data are addressed starting from 0, a register address is equal to the register number decremented by 1.
- Page 52 Example: You may want to read the relative humidity measurement of a transmitter whose current measure is 65.8%. From Table 8.D we obtain that the relative humidity value is stored in register number 0003. In order to read the quantity value, you need to include in the request: •...
- Page 53 Parameter storage (function 05h) Function code 05h allows the permanent storage of any changes made to parameter values. Parameter changes performed with Write functions (functions 06h and 10h) actually modify only values in the RAM memory and are therefore deleted in case of instrument power supply failure. Storage is associated with a number, as described in Table 8.E.
- Page 54 Command Value Length Description Function: 1 byte Parameter write command Data: 0000h to FFFFh 2 bytes Parameter address 0000h to FFFFh 2 bytes New parameter value Response Value Length Description Function: 1 byte Parameter write command Data: 0000h to FFFFh 2 bytes Parameter address 0000h to FFFFh...
- Page 55 Command Value Length Description Function: 1 byte Parameters writing command Data: 0000h to FFFFh 2 bytes First parameter address 0001h to 007Bh 2 bytes Number of parameters to be changed (N) 2 x N 1 byte Number of bytes 2 x N bytes New parameters values Response Value...
- Page 56 Command Value Length Description Function: 1 byte Parameters write command Data: Address of 1 code char. (MSB) 2 bytes Address of 1 code char. (LSB) 6 parameters to be written (MSB) 2 bytes 6 parameters to be written (LSB) 1 bytes 12 bytes of values character value (MSB) 2 bytes...
- Page 57 Command Value Length Description Function: 1 byte Parameters write command Data: Address of 1 parameter(MSB) 2 bytes Address of 1 parameter (LSB) Number of parameters to write (MSB) 2 bytes Number of parameters to write (LSB) 1 byte Number of bytes for the values Value at 0V or 4mA = 350 ppm (MSB) 2 bytes Value at 0V or 4mA = 350 ppm (LSB)
- Page 58 There is error condition if relevant bit is 1. The command for the errors register reading is: Command Value Length Description Function: 1 byte Errors register reading command Data: 0 byte Data field is empty The instrument answers as follows: Response Value Length...
- Page 59 Value Length Description Fixed value (continues…) 1 byte (next item ID) Fixed value 1 byte (Number of fields) 1 byte Fixed value (first field ID) Length 1 1 byte First field length Value 1 (Length 1) bytes First field value (Manufacturer) Fixed value 1 byte (second field ID)
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Page 60: Technical Specifications
9. TECHNICAL SPECIFICATIONS Sensor features Relative humidity RH (for HD45 17…, HD46 17… and HD46 17B… models) Sensor Capacitive Measuring range 0...100 % RH -40…+85°C Dewpoint Td Sensor operating range -40...+80°C Accuracy ±2.5% (0…85%RH)/±3.5% (85…100%RH) @ T=15…35°C and air speed < 0.25 m/s (2.5 + 1.5% reading)% @ T= remaining range See table for Dewpoint Resolution... - Page 61 Dewpoint Td accuracy (°C) The dewpoint is a computed quantity that depends on relative humidity and temperature calibration accuracy. The values supplied below refer to ±2.5%RH, ±0.25°C, 1013.25mbar accuracies. Relative humidity (%) 2.50 1.00 0.71 0.58 2.84 1.11 0.78 0.64 0.56 0.50 3.34...
- Page 62 Dimensions (in mm) HD45… series HD46… series - 62 - HD45 / HD46 V2.4...
- Page 63 Fixing holes - 63 - HD45 / HD46 V2.4...
- Page 64 Instrument storage conditions Temperature: -25...+70°C. • Humidity: 10...90%RH non-condensing. • In storing the instrument, avoid areas where: There is a high humidity level. The instrument is exposed to direct sunlight. The instrument is exposed to a high temperature source. There are high vibration levels. There is presence of vapour, salt and/or corrosive gas.
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Page 65: Ordering Codes
10. ORDERING CODES H D 4 5 AVAILABLE OPTIONS V = 0÷10Vdc analog output A = 4÷20mA analog output S = RS485 MODBUS-RTU output R = Relay output VR = 0÷10Vdc analog output and relay AR = 4÷20mA analog output and relay SR = RS485 MODBUS-RTU output and relay If there is the analog output, there cannot be the RS485 output and vice versa. - Page 66 Examples: HD45 7BDVR: Transmitter, indicator and regulator for temperature and CO . With display, two 0÷10V analog outputs, a relay configurable for temperature or CO control. HD45 BVR: Transmitter, indicator and regulator for CO . Without display, with CO level LED indicators, with 0÷10V analog output and relay. HD45 17AR: Transmitter and regulator for temperature and humidity.
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Page 67: Appendix A - Check Codes In Modbus-Rtu Protocol
APPENDIX A Control codes computing in MODBUS-RTU protocol In MODBUS-RTU, two check modes for the transmitted data correctness coexist: • Parity check on single byte • Cyclic redundancy check (CRC) on the whole transmitted frame. Codes are computed by the transmitting device as a function of the data to be transmitted. - Page 68 Example: CRC computation for the message formed by the two information bytes 0000 0010 (02h) and 0000 0111 (07h). CRC initialization (step 1) 1111 1111 1111 1111 First information byte 0000 0010 XOR computation (step 2) 1111 1111 1111 1101 right shift (step 3) 0111 1111...
- Page 69 XOR Computation 1001 0010 0000 1000 right shift (step 3) 0100 1001 0000 0100 right shift (step 3) 0010 0100 1000 0100 right shift (step 3) 0001 0010 0100 0001 The final check code is CRC = 0001 0010 0100 0001 (1241h) The least significant byte is 0100 0001 (41h) and is the first to be transmitted.
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Page 70: Table Of Contents
TABLE OF CONTENTS INTRODUCTION 1.1. Instruments versions available FRONT PANEL DESCRIPTION INSTALLATION AND CONNECTION 3.1. HD45… connection diagrams 3.2. HD46… connection diagrams OPERATION MODE 4.1. Analog outputs 4.2. Relay outputs 4.3. LED indicators in HD45 BVR and HD45 BAR MODEL 4.4. - Page 72 All DELTA OHM instruments are subject to accurate testing, and are guaranteed for 24 months from the date of purchase. DELTA OHM will repair or replace free of charge the parts that, within the warranty period, shall be deemed non efficient according to its own judgement. Complete replacement is excluded and no damage claims are accepted.
- Page 73 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 The quality level of our instruments is the 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.
- Page 74 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 V2.4 22/01/2018...