Sentera Controls HPSPX-2 Manuale di servizio

HPSPX-2 DIFFERENTIAL

PRESSURE PI

CONTROLLER

Mounting and operating instructions

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HPSPX-2 DIFFERENTIAL PRESSURE PI CONTROLLER

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 6

MOUNTING INSTRUCTIONS IN STEPS 6

VERIFICATION OF INSTALLATION INSTRUCTIONS 8

OPERATING INSTRUCTIONS 8

TRANSPORT AND STORAGE 10

WARRANTY AND RESTRICTIONS 10

MAINTENANCE 10

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HPSPX-2 DIFFERENTIAL PRESSURE PI CONTROLLER

SAFETY AND PRECAUTIONS

Read all the information, the datasheet, Modbus map, mounting and operating

instructions and study the wiring and connection diagram 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

of the product are inadmissible.

e product should not be exposed to abnormal conditions, such as extreme

temperatures, direct sunlight or vibrations. Long-term exposure to chemical

vapours in high concentration can aﬀect the product performance. Make sure the

work environment is as dry as possible; avoid condensation.

All installations shall comply with local health and safety regulations and local

electrical standards and approved codes. is product can only be installed by

an engineer or a technician who has expert knowledge of the product and safety

precautions.

Avoid contacts with energised electrical parts. Always disconnect the power

supply before connecting, servicing or repairing the product.

Always verify that you apply appropriate power supply to the product and use

appropriate wire 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 these

should be disposed of 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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HPSPX-2 DIFFERENTIAL PRESSURE PI CONTROLLER

PRODUCT DESCRIPTION

e HPSPX -2 series are high resolution diﬀerential pressure controllers with analog/

modulating output. e integrated PI control with anti-windup function oﬀers the

possibility to directly control EC motors / fans. ey are equipped with a fully digital

state-of-the-art pressure transducer designed for a wide range of applications. Zero

point calibration and Modbus registers reset can be executed via a tactile switch.

All parameters are accessible via Modbus RTU (3SModbus software or Sensistant).

ARTICLE CODES

Article code Power supply Connection Range, [Pa]

HPSPF-1K0 -2

18—34 VDC 4-wire (separate grounds)

0—1.000 Pa

0—2.000 Pa

0—4.000 Pa

0—10.000 Pa

HPSPF-2K0-2

HPSPF-4K0-2

HPSPF-10K -2

HPSPG-1K0 -2

18—34 VDC /

15—24 VAC ±10% 3-wire (common ground)

0—1.000 Pa

0—2.000 Pa

0—4.000 Pa

0—10.000 Pa

HPSPG-2K0-2

HPSPG-4K0-2

HPSPG-10K -2

INTENDED AREA OF USE

■Diﬀerential pressure, air ﬂow volume or air ﬂow velocity measurement and

control in HVAC applications

■Diﬀerential pressure / air ﬂow monitoring and control in clean rooms

■Clean air and non-aggressive, non-combustible gases

TECHNICAL DATA

■Built-in digital high resolution diﬀerential pressure sensor

■PI control with anti wind-up function and auto-tune function

■Active setpoint selection between diﬀerential pressure, air ﬂow volume or air velocity

■Air ﬂow velocity can be measured via Modbus RTU (by using an external PSET-

PTX-200 Pitot tube connection set)

■Minimum and maximum output value selection

■Selectable analog / digital output: 0—10 VDC / 0—20 mA / PWM (open collector type):

►0—10 VDC mode: min. load 50 kΩ (RL ≥ 50 kΩ)

►0—20 mA mode: max. load 500 Ω (RL ≤ 500 Ω)

►PWM mode: PWM Frequency: 1 kHz, min. load 50 kΩ (RL ≥ 50 kΩ)

■Variety of operating ranges and measurement windows

■Selectable response time: 0,1—10 s

■Implemented K-factor

■Selectable internal voltage source for PWM output: 3,3 or 12 VDC

■Diﬀerential pressure, air volume or air velocity readout via Modbus RTU

■Selectable minimum and maximum operating ranges

■Maximum power consumption:

►HPSPF-2: 1,8 W

►HPSPG-2: 1,68 W

■Nominal power consumption in normal operation:

►HPSPF-2: 1,35 W

►HPSPG-2: 1,26 W

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HPSPX-2 DIFFERENTIAL PRESSURE PI CONTROLLER

■Imax:

►HPSPF-2: 75 mA

►HPSPG-2: 70 mA

■Modbus registers reset function (to factory pre-set values)

■Four LEDs for controller status indication

■Modbus RTU communication

■Sensor calibration procedure via tact switch

■Aluminium pressure connection nozzles

■Accuracy: ±2 % of the operating range

■Protection class: IP65

■Operating ambient conditions:

►Temperature: -5—65 °C

►Rel. humidity: < 95 % rH (non-condensing)

■Storage temperature: -20—70 °C

STANDARDS

■Low Voltage Directive 2014/34/EC

■EMC Directive 2014/30/EC: EN 61000-6-3:2007/A1:2011/AC:2012

■WEEE Directive 2012/19/EC

■RoHs Directive 2011/65/EC

OPERATIONAL DIAGRAM

Diagrams

Max alarm

Input

(DP, VFR, AV)

t [s]

Max span

Setpoint

Min span

Min alarm

01020304050607080901

100

Setpoint

Time [s]

Diﬀerential pressure / volume ﬂow /

air velocity full scale (%)

Kp = 20

Kp = 10

Kp = 5

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HPSPX-2 DIFFERENTIAL PRESSURE PI CONTROLLER

WIRING AND CONNECTIONS

HPSPF -2 HPSPG -2

VIN 18—34 VDC 18—34 VDC 15—24 VAC ±10%

GND Ground Common ground AC ~

AModbus RTU (RS485), signal A

/B Modbus RTU (RS485), signal /B

AO1 Analog / modulating output (0—10 VDC / 0—20 mA / PWM)

GND Ground AO Common ground

Connections Spring contact terminal blocks, cable cross section: 1,5 mm2

ATTENTION Never connect the common ground of G type articles to other devices powered

by a DC voltage. If an AC power supply is used with a unit on a Modbus network,

the GND terminal should NOT BE CONNECTED to other units on the network or

via the CNVT-USB-RS485 converter. is may cause permanent damage to the

communication semiconductors and / or the computer!

MOUNTING INSTRUCTIONS IN STEPS

Before you start mounting the HPSPX-2 diﬀerential pressure PI controller, read

carefully “Safety and Precautions”. Choose a smooth surface for installation (awall,

panel, etc.) and follow these steps:

1. Unscrew the front cover of the enclosure to remove it.

2. Fix the enclosure onto the surface by means of suitable fasteners while adhering

to the mounting dimensions shown in Fig. 1 Mounting dimensions and the correct

mounting position shown in Fig. 2 Mounting position.

Fig. 1 Mounting dimensions Fig. 2 Mounting position

2x Ø 3,

Correct Incorrect

HPS

3. Insert the cable though the cable gland.

4. Connect as shown in Fig. 3 Connections adhering to the information in section

“Wiring and connections”.

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HPSPX-2 DIFFERENTIAL PRESSURE PI CONTROLLER

Fig. 3 Connections

Power supply

G: 18—34 VDC / 15—24 VAC ±10%

F: 18—34 VDC

Modbus RTU

A /B

Analog / modulating (PWM) output

0—10 VDC/0—20 mA / PWM

5. Connect the nozzles with the tubing.

6. Put back the front cover and secure it with the screws.

7. Switch on the power supply.

For sensor calibration and Modbus register reset procedures, refer to section

“OPERATING INSTRUCTIONS” on page 8.

NOTE

PWM voltage selection:

■When the internal pull-up resistor (JP1) is connected, the voltage source

is set via Modbus holding register 48, i.e. 3,3 VDC or 12 VDC. See Fig. 4

Pull -up resistor jumper 1.

Fig. 4 Pull-up resistor jumper 1

■When JP1 is disconnected, the output type is Open collector. See Fig. 5 PWM

(Open collector) connection.

■Only when JP1 is not connected and the analog output (AO1) is assigned as PWM

output (via Holding register 40 - see Modbus Maps below), an external pull-up

resistor is used.

Fig. 5 PWM (Open collector) connection

External pull-up

resistor

(10—100 kΩ)

Analog / modulating (PWM)

output

0—10 VDC/0—20 mA/ PWM

Voltage source

(5—50 VDC)

Optional settings

To assure correct communication, the NBT needs to be activated in only two devices

on the Modbus RTU network. If necessary, enable the NBT resistor via 3SModbus or

Sensistant (Holding register 41).

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HPSPX-2 DIFFERENTIAL PRESSURE PI CONTROLLER

Example 1 Example 2

ТX

NBT

Slave 2

Master

Slave n

Slave 1

Slave 2

Slave 1

ТX

NBT

Master

Slave n

On a Modbus RTU network, two bus terminators (NBTs) need to be activated.

NOTE

VERIFICATION OF INSTALLATION INSTRUCTIONS

Continuous green LED1 indication as shown in Fig. 6 Power / Modbus communication

indication means the unit is supplied. If LED1 is not on, check the connections again.

Blinking green LED1 indication as shown in Fig. 6 Power / Modbus communication

indication means the unit has detected a Modbus network. If LED1 does not blink,

check the connections again.

Fig. 6 Power / Modbus communication indication

e status of the LEDs can be checked only when the unit is energised. Take the

relevant safety measures!

ATTENTION

OPERATING INSTRUCTIONS

Calibration procedure:

8. Disconnect the nozzles.

9. ere are two options for starting the calibration process:

10. Either write “1” in holding register 49 or press button SW1 for 4 seconds until

the green LED2 and yellow LED3 on the printed circuit board blink twice and

release it (see Fig. 7 Sensor calibration and Modbus register reset tact switch and

indication).

11. After 2 seconds, the green LED2 and yellow LED3 will blink twice once again to

indicate that the calibration procedure has ﬁnished.

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HPSPX-2 DIFFERENTIAL PRESSURE PI CONTROLLER

Make sure that the nozzles are free and disconnected.

ATTENTION

Modbus registers reset procedure:

12. Press button SW1 for 4 seconds until the green LED2 and yellow LED3 on the

printed circuit board blink twice and hold the button until both LEDs blink again

three times (see Fig. 7 Sensor calibration and Modbus register reset tact switch

and indication).

13. e Modbus registers are restored to their default values (factory pre-set).

Fig. 7 Sensor calibration and Modbus register reset tact switch and indications

Press and hold the button until both LEDs on the PCB blink twice and hold it until

both LEDs blink again three times. If the button is released before both LEDs blink

again three times, the sensor will have carried out a calibration procedure instead

of Modbus registers reset procedure.

NOTE

Communication holding registers reset procedure:

14. Put the jumper onto pins 1 and 2 of the P4 connector for more than 20 s while

the device is powered. (See Fig. 8 Modbus holding register reset jumper ).

Fig. 8 Modbus holding register reset jumper

15. Modbus communication holding registers from 1 to 3 will be reset to the default

values.

16. Remove the jumper.

Make sure that the nozzles are free and not connected.

ATTENTION

LED indications (See Fig. 9):

17. When the green LED1 is on, the power supply is adequate, but there is no active

Modbus communication; if it blinks, the Modbus RTU communication is active.

18. When the green LED2 is on, the measured diﬀerential pressure, air volume or air

velocity is stabilized between the minimum span and maximum span.

19. When the yellow LED3 is on, the measured diﬀerential pressure, air volume or

air velocity has exceeded the minimum or maximum span threshold.

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HPSPX-2 DIFFERENTIAL PRESSURE PI CONTROLLER

20. When the red LED4 blinks, there is a problem with the sensor element.

21. When the red LED4 is solid on, the diﬀerential pressure, air volume or air

velocity has exceeded the minimum or maximum alarm threshold.

Fig. 9 LED indications

22. Sensor element failure indication:

In case of failure of the sensor element or loss of communication with it, the red

LED4 blinks.

Autotune function:

e auto-tune function computes the Kp and Ti parameters according to the system

response. Writing ‘1’ into holding register 36 starts the auto-tune procedure. When

it is completed, the HPSPX -2 controller automatically writes ‘0’ in holding register

36 and overrides holding registers 34 and 35 by entering the new values of Kp and

Ti. Once started, the Auto-tune procedure cannot be stopped while the controller is

on. If the HPSPX -2 is restarted, however, auto-tune is aborted.

Auto-tune function calculates the Kp and Ti parameters necessary for the good

system performance. However, if you have extensive knowledge of PI control, you

can change these parameters via writing in Modbus holding registers 34 and 35.

NOTE

TRANSPORT AND STORAGE

Avoid shocks and extreme conditions; stock in original packing.

WARRANTY 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. e 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

damp 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.

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