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Mounting and operating instructions HPD DUAL DIFFERENTIAL PRESSURE TRANSMITTER

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Page 1: HPD DUAL DIFFERENTIAL PRESSURE TRANSMITTER

Mounting and operating instructions

HPD DUAL DIFFERENTIAL PRESSURE TRANSMITTER

Page 2: HPD DUAL DIFFERENTIAL PRESSURE TRANSMITTER

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Table of contents

SAFETY AND PRECAUTIONS 3

PRODUCT DESCRIPTION 4

ARTICLE CODES 4

INTENDED AREA OF USE 4

TECHNICAL DATA 4

STANDARDS 5

OPERATIONAL DIAGRAM 5

WIRING AND CONNECTIONS 5

MOUNTING INSTRUCTIONS IN STEPS 6

VERIFICATION OF THE INSTALLATION INSTRUCTIONS 8

OPERATING INSTRUCTIONS 8

MODBUS REGISTER MAPS 10

TRANSPORT AND STOCK KEEPING INFORMATION 12

WARRANTY INFORMATION AND RESTRICTIONS 12

MAINTENANCE 12

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SAFETY AND PRECAUTIONS

Read all information, the datasheet, mounting instructions and wiring scheme before working with the product. For personal and equipment safety, and for optimum product performance, make sure you entirely understand the contents before installing, using, or maintaining this product.

For safety and licensing (CE) reasons, unauthorised conversion and / or modifications to the product are not permitted.

The product must not be exposed to abnormal conditions, such as: extreme temperatures, direct sunlight or vibrations. Chemical vapours with high concentration in combination with long exposure times can affect the product performance. Make sure the work environment is as dry as possible; check for condensation spots.

All installations shall comply with the local health and safety regulations and local electrical codes. This product can only be installed by an engineer or a technician who has an expert knowledge of the product and safety precautions.

Avoid contacts with energised electrical parts; always treat the product as if it is life. Always disconnect the power source before connecting the power cables, servicing or repairing the product.

Always verify that you apply appropriate power supply to the product and use wires with appropriate size and characteristics. Make sure that all the screws and nuts are well tightened and fuses (if any) are fitted well.

Recycling of equipment and packaging should be taken into consideration and disposed in accordance with local and national legislation / regulations.

In case there are any questions that are not answered, please contact your technical support or consult a professional.

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PRODUCT DESCRIPTION

The HPD is a compact dual differential pressure transmitter. It provides two analogue / digital outputs with selectable minimum and maximum pressure limits.

ARTICLE CODES

Code Supply Connection Range, [Pa]

HPD-G-1K0HPD-G-2K0HPD-G-4K0HPD-G-10K

13—26 VAC 18—34 VDC

3 - wire

0—1.0000—2.0000—4.0000—10.000

HPD-F-1K0HPD-F-2K0HPD-F-4K0HPD-F-10K

18—34 VDC 4 - wire

0—1.0000—2.0000—4.0000—10.000

INTENDED AREA OF USE

■ Fan / pressure control and VAV (Variable Air Volume) modes ■ CAV* (Constant Air Volume) mode ■ Pressure / airflow monitoring in clean rooms ■ Clean air and non-aggressive, non-combustible gases ■ For indoor use only

* Only when K-factor of the fan is known (consult the datasheets)

TECHNICAL DATA

■ 2 analogue / digital outputs: 0—10 VDC / 0—20 mA / PWM (open collector), frequency - 1 kHz

■ Load resistance: ► 0—10 VDC mode ≥ 50 kΩ ► 0—20 mA mode ≤ 500 Ω

■ PWM mode ≥ 50 kΩ ■ Operating modes, selectable via Modbus:

► Differential pressure ► Air volume*

■ Operating pressure range: see the table above ■ Minimum control range span: 50 Pa ■ Selectable minimum and maximum pressure limits ■ Response time: 0,1—10 s, free selectable ■ Accuracy of the analogue / digital outputs: ± 2 % ■ Enclosure: plastic ABS, grey (RAL 7035) ■ Aluminium pressure connection nozzles: hose diameter = 6 / 7 mm ■ Protection standard: IP65 (according to EN 60529) ■ Operating ambient conditions:

► temperature: -5—65 °C ► rel. humidity: < 95 % rH (non-condensing)

■ Storage temperature: -20—60 °C

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STANDARDS

■ Low Voltage Directive 2006/95/EC ■ EMC Directive 2004/108/EC: EN 61326 ■ WEEE Directive 2012/19/EU ■ RoHs Directive 2011/65/EU

OPERATIONAL DIAGRAM

0 10 20 30 40 50 60 70 80 90 100

Differential Pressure Range [%], Pa

Ou

tput

[%

]

10

20

30

40

50

60

70

80

90

100

Control Range Minimum

Control Range Maximum

VDC,mA,

PWM

WIRING AND CONNECTIONS

Vin Positive DC voltage / AC ~

GND Ground / AC ~

A Modbus RTU (RS485) signal A

/B Modbus RTU (RS485) signal /B

AO1 Analogue / digital output 1 (0—10 VDC / 0—20 mA / PWM)

GND Ground

AO2 Analogue / digital output 2 (0—10 VDC / 0—20 mA / PWM)

GND Ground

ConnectionsCable cross section: max. 0,75 mm2

Cable gland clamping range: 3—6 mmConnecting tube diameter: 6—7 mm

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MOUNTING INSTRUCTIONS IN STEPS

Before you start mounting the HPD differential pressure transmitter, read carefully “Safety and Precautions”. Choose a smooth surface for an installation location (a wall, panel and etc.).

Follow these steps:

1. Unscrew the four screws on the front cover and open it.2. Fix the rear lid of the enclosure on a wall / panel by suitable fastening elements,

according to the fixing dimensions. (See Fig. 1 Mounting dimensions.)

Fig. 1 Mounting dimensions Fig. 2 Mounting position

2x Ø 3,449

52

Acceptable Not acceptable

HPD

+ _

HPD

+_

HPD

+ _

3. Do the wiring according to the wiring diagram (see Fig.  3) using the legend information from section “Wiring and connections”.

Fig. 3 Wiring and connections

Power supply13—26 VAC / 18—34 VDC

Analogue / digital output 10—10 VDC / 0—20 mA / PWM

Analogue / digital output 10—10 VDC / 0—20 mA / PWM

Modbus RTUA /B

4. Check if your unit starts or terminates the network (see Example 1 and Example 2). If it does, connect the NBT resistor via Modbus. Otherwise leave it disconnected (default Modbus setting).

Example 1 Example 2

Slave 1

RX

ТX

NBT

NBT

NBT

Slave 2Master

Slave nSlave 2Slave 1

RX

ТX

NBT

NBT

Master

Slave n

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ATTENTION If an AC power supply is used with any of the units in a Modbus network, the GND terminal should NOT BE CONNECTED to other units on the network or via the CNVT-USB-RS485 converter. This may cause permanent damage to the communication semiconductors and / or the computer.

5. Customise the factory settings for the PWM outputs to the desired ones. By default the JP1 and JP2 jumpers (see Fig.  4) are closed and the PWM outputs 1 and 2 are connected to an internal voltage source** via a 10 kΩ pull-up resistor each. Remove the JP1 or JP2 jumper if you want to connect the relevant PWM output to an external voltage source via an external pull-up resistor. Fig. 5 shows an example for connection of PWM 1 output. If, necessary, make the relevant PWM 2 connection following the example in Fig.  5 PWM 1 connection example.

** The internal voltage source is selectable between +3.3 VDC and +12 VDC by writing ‘0’ or ‘1’ in holding registers 19 (for channel 1) and 22 (for channel 2).

Fig. 4 Internal pull-up resistor jumper Fig. 5 PWM 1 connection example

34 VDC

External Vcc (5—50 VDC)

GND

PWM

Pull-up resistor10—100 K+

-+

-

6. Close the enclosure and fix the cover.7. Connect the nozzles with the tubing.8. Switch on the power supply.

ATTENTION If a G-type article is using the same AC power supply source (transformer) as F-type article, a SHORT CIRCUIT may result when the power supply and analogue signal terminals are connected to the same common ground! In this case always connect different article types to separate AC transformers or use the same article version.

9. Customise the other factory settings to the desired ones through 3SModbus software (if necessary). For all default factory settings see Table Modbus register maps.

NOTE For sensor calibration and Modbus register reset procedures refer to section “Operating instructions”.

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VERIFICATION OF THE INSTALLATION INSTRUCTIONS

After you switch on the power supply, check the ON/OFF LED on the board (Fig. 6 Operating indication). Continuous green light indicates normal operation of your unit. If it is OFF, check the connections again.

Check if the LEDs shown in Fig. 7 Modbus communication indication blink. If they do, your unit has detected a Modbus network. If they do not blink, check the connections again.

Fig. 6 Operating indication Fig. 7 Modbus communication indication

ATTENTION The status of the LEDs can be checked only when the unit is energised. Take the relevant safety measures!

OPERATING INSTRUCTIONS

1. Calibration procedure:

ATTENTION Make sure that the nozzles are free and not connected.

1.1 Channel 1 calibration: ■ Disconnect the nozzles. ■ Press button SW1 for 4 seconds until the blue LED on the printed circuit board blinks twice. Then release this button. (See Fig. 8 Sensor calibration and Modbus register reset tact switches and indication.)

■ The blue LED blinks twice in 2 seconds to show that the calibration procedure has finished.

1.2 Channel 2 calibration: ■ Disconnect the nozzles. ■ Press button SW2 for 5 seconds until the blue LED4 on the printed circuit board blinks twice. (See Fig. 8.) Then release this button.

■ The blue LED4 blinks twice to show that the calibration procedure has finished. After that LED4 starts blinking constantly.

Fig. 8 Sensor calibration and Modbus register reset tact switches and indication

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2. Reset of Modbus registers procedure:

The holding register reset procedures of the channels / sensors are carried out individually.

2.1 Channel 1 holding registers reset:

Press button SW1 for 5 seconds until the blue LED3 on the printed circuit board blinks twice and keep pressing the button until it blinks three times. (See Fig. 8.) Then release the button. The holding registers for Channel 1 are restored to their default values (factory preset).

NOTE Do not release SW1 button after it blinks twice until it blinks again three times. Otherwise your pressure transmitter will carry out a calibration procedure instead of Modbus register reset procedure.

2.2 Channel 2 holding registers reset:

Press button SW2 for 5 seconds until the blue LED4 on the printed circuit board blinks twice and keep pressing the button until it blinks three times. (See Fig. 8.) Then release the button. The holding registers for Channel 2 are restored to their default values (factory preset).

NOTE Do not release SW2 button after it blinks twice until it blinks again three times. Otherwise, your pressure transmitter will carry out a channel 2 calibration procedure instead of holding registers  2 reset procedure.

2.3 Modbus communication registers reset:

To reset the Modbus communication registers press simultaneously SW1 and SW2 buttons for 5 seconds until the blue LED3 and LED4 on the printed circuit board blink four times. (See Fig. 3.) Then release the buttons. The Modbus communication holding registers are restored to their default values (factory preset).

NOTE Release SW1 and SW2 buttons right after LED3 and LED4 blink four times. Otherwise, your pressure transmitter will carry out channel 1 calibration procedure and channel 1 holding registers reset procedure.

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MODBUS REGISTER MAPS

INPUT REGISTERS

Data type Description Data Values

1Differential Pressure (Channel 1)

unsigned int. Channel 1 measured differential pressure

HPD-X-1K0HPD-X-2K0HPD-X-4K0HPD-X-10K

0—10.0000—20.0000—40.0000—10.000

1.000 = 1.000 = 1.000 = 1.000 =

100,0 Pa100,0 Pa100,0 Pa1.000 Pa

2 Output 1 unsigned int. Channel 1 analogue / digital output 0— 1.000 100 = 10,0 %

3Air Volume Flow Rate High (Channel 1)

unsigned int.Reserved, returns 0 HPD-X-1K0/2K0/4K0

Channel 1 air volume flow rate in m3/h HPD-X-10K0 0—100.000 1.000 = 1.000 m3/h

4

Air Volume Flow Rate (Channel 1)

unsigned int.

Channel 1 air volume flow rate in m3/hHPD-X-1K0HPD-X-2K0HPD-X-4K0

0—31.6230—44.7210— 63.245 1.000 = 1.000 m3/h

Air Volume Flow Rate Low (Channel 1)

Channel 1 air volume flow rate low word in m3/h HPD-X-10K0 0—100.000

5Min. Pressure Limit Flag (Channel 1)

unsigned int.The flag indicates that the pressure is over or below the channel 1 min. limit

0 =1 =

over the limitbelow the limit

6Max. Pressure Limit Flag (Channel 1)

unsigned int.The flag indicates that the pressure is over or below the channel 1 max. limit

1 = 0 =

over the limitbelow the limit

7-10 Reserved, returns 0

11Differential Pressure (Channel 2)

unsigned int. Channel 2 measured differential pressure

HPD-X-1K0HPD-X-2K0HPD-X-4K0HPD-X-10K

0—10.0000—20.0000—40.0000—10.000

1.000 = 1.000 = 1.000 = 1.000 =

100,0 Pa100,0 Pa100,0 Pa1.000 Pa

12 Output 2 unsigned int. Channel 2 analogue / digital output 0— 1.000 100 = 10,0 %

13 Reserved, returns 0

14Air Volume Flow Rate (Channel 2)

unsigned int. Channel 2 air volume flow rate in m3/h

HPD-X-1K0HPD-X-2K0HPD-X-4K0HPD-X-10K

0—31.6230—44.7210— 63.245

0—100.000

1.000 = 1.000 m3/h

15Min. Pressure Limit Flag (Channel 2)

unsigned int.The flag indicates that the pressure is over or below the channel 2 min. limit

0 =      1 =

over the limitbelow the limit

16Max. Pressure Limit Flag (Channel 2)

unsigned int.The flag indicates that the pressure is over or below the channel 2 max. limit

1 =      0 =

below the limitover the limit

17-20 Reserved, returns 0

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HOLDING REGISTERS

Data type Description Data Default Values1 Modbus Slave Address unsigned int. Modbus device address 1—247 1

2 Modbus Baud Rate unsigned int. Modbus communication baud rate 1—3 2

1 =2 = 3 =

9.60019.200 38.400

3 Modbus Parity Mode unsigned int. Parity check mode0 = 8N11 = 8E12 = 8O1

10 =1 = 2 =

8N1 8E18O1

4 Device type unsigned int. Device type (Read only)

HPD-X-1K0 = 1071HPD-X-2K0 = 1072HPD-X-4K0 = 1073HPD-X-10K = 1074

5 HW version unsigned int. Hardware version of the device (Read only) XXXX 0100 =  0 x HW version 1.00

6 FW version unsigned int. Firmware version of the device (Read only) XXXX 0100 = 0 x FW version 1.00

7-10 Reserved, returns 0

11 Output Type (Channel 1) unsigned int. Select channel 1 output

type 1—3 11 = 2 = 3 =

0—10 VDC0—20 mA

PWM

12 Pressure Range Minimum (Channel 1) unsigned int. Minimum pressure for

analogue output 1 0—10.000 0 1.000 = 100,0 Pa1.000 Pa

(HPD-X-10K)

13 Pressure Range Maximum (Channel 1) unsigned int. Maximum pressure for

analogue output 1

HPD-X-1K0HPD-X-2K0HPD-X-4K0

50—10.000 Pa50—20.000 Pa50—40.000 Pa 10.000

1.000 = 100,0 Pa

HPD-X-10K 50—10.000 Pa 1.000 = 1.000 Pa14 Response Time (Channel 1) unsigned int. Channel 1 response time 1—100 10 10 = 1 s

15 Min. Pressure Limit (Channel 1) unsigned int. Channel 1 minimum pressure limit

HPD-X-1K0HPD-X-2K0HPD-X-4K0

0—10.0000—20.0000— 40.000

0 1.000 = 100,0 Pa

HPD-X-10K 0—10.000 0 1.000 = 1.000 Pa

16 Max. Pressure Limit (Channel 1) unsigned int. Channel 1 maximum

pressure limit

HPD-X-1K0HPD-X-2K0HPD-X-4K0

0—10.0000—20.0000— 40.000

10.00020.00040.000

1.000 = 100,0 Pa

HPD-X-10K 0—10.000 10.000 1.000 = 1.000 Pa

17 Power-up Timer (Channel 1) unsigned int.

Channel 1 power-up timer. It counts the time before the first detection

0—1.000 s 60 s 100 = 100 s

18 K-factor Selection (Channel 1) unsigned int.Channel 1 K-factor selection according to the motor type

0—1.000 0

19 Internal Voltage Source PWM (Channel 1) unsigned int.

Channel 1 internal voltage source selection for the PWM 1 output

0—1 0 0 =1 =

0 = 3,3 VDC1 = 12 VDC

20 Network Bus Termination (NBT) unsigned int. Network bus termination

resistor state 0—1 0 0 =1 =

DisconnectedConnected

21 Output Type (Channel 2) unsigned int. Select channel 2 output type 1—3 1

1 = 2 = 3 =

0—10 VDC0—20 mA

PWM

22 Pressure Range Minimum (Channel 2) unsigned int. Minimum pressure for

analogue output 2 0—10.000 01.000 = 100,0 Pa1.000 = 1.000 Pa

(HPD-X-10K)

23 Pressure Range Maximum (Channel 2) unsigned int. Maximum pressure for

analogue output 2

HPD-X-1K0HPD-X-2K0HPD-X-4K0

50—10.000 Pa50—20.000 Pa50—40.000 Pa 10.000

1.000 = 100,0 Pa

HPD-X-10K 50—10.000 Pa 1.000 Pa24 Response Time (Channel 2) unsigned int. Channel 2 response time 1—100 10 10 = 1 s

25 Min. Pressure Limit (Channel 2) unsigned int. Channel 2 minimum

pressure limit

HPD-X-1K0HPD-X-2K0HPD-X-4K0

0—10.0000—20.0000— 40.000

0 1.000 = 100,0 Pa

HPD-X-10K 0—10.000 0 1.000 = 1.000 Pa

26 Max. Pressure Limit (Channel 2) unsigned int.

Channel 2 power-up timer. It counts the time before the first detection

HPD-X-1K0HPD-X-2K0HPD-X-4K0

0—10.0000—20.0000— 40.000

10.00020.00040.000

1.000 = 100,0 Pa

HPD-X-10K 0—10.000 10.000 1.000 Pa

27 Power-up Timer (Channel 2) unsigned int.Channel 2 power-up timer. It counts the time before the first detection

0—1.000 s 60 s 100 = 100 s

28 K-factor Selection (Channel 2) unsigned int.Channel 2 K-factor selection according to the motor type

0—1.000 0

29 Internal Voltage Source PWM (Channel 2) unsigned int.

Channel 2 internal voltage source selection for the PWM 1 output

0—1 0 0 =1 =

0 = 3,3 VDC1 = 12 VDC

30 Display Mode Selection unsigned int. Display Mode Selection 0—2 0 0 =1 =

DisconnectedConnected

If you want to find out more about Modbus over serial line, please visit: http://www.modbus.org/docs/Modbus_over_serial_line_V1_02.pdf

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TRANSPORT AND STOCK KEEPING INFORMATION

Avoid shocks and extreme conditions; stock in original packing.

WARRANTY INFORMATION AND RESTRICTIONS

Two years from the delivery date against defects in manufacturing. Any modifications or alterations to the product after the date of publication relieve the manufacturer of any responsibilities. The manufacturer bears no responsibility for any misprints or mistakes in this data.

MAINTENANCE

In normal conditions this product is maintenance-free. If soiled, clean with a dry or dampish cloth. In case of heavy pollution, clean with a non-aggressive product. In these circumstances the unit should be disconnected from the supply. Pay attention that no fluids enter the unit. Only reconnect it to the supply when it is completely dry.

DUAL DIFFERENTIAL PRESSURE TRANSMITTER HPD