USER GUIDEPEL / PEL-M
V2.0.0 (05.09.2014)
1 (6)COMMISSIONING
Mounting- The transmitter should be installed above the measuring point to avoid condensation problems.

- The duct overpressure is detected by connecting the measuring point to + connector and by leaving the- connection open (surrounding space pressure). Accordingly, the duct under-pressure is detected byconnecting the measuring point to - connector and by leaving the + connection open.
- Install the measuring hoses carefully so that the hoses don't bend too tightly. Too tight curves may prevent theair flow to the sensor.

- The hose length doesn't effect on the measuring accuracy. However, long hoses generate delay on themeasurement.

WiringDevice wiring and commissioning can only be carried out by qualified professionals. Always make thewirings while the power is switched off.

Produal Oy

Keltakalliontie 18, 48770 Kotka FINLAND

Tel: +358 10 219 9100 / Fax: +358 5 230 9210

Information is subject to change without prior notice.

info@produal.fi

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USER GUIDEPEL / PEL-M
2 (6)Selecting the measuring range
The measuring range can be selected with the jumpers S2, S3 and S4.

A. Pressure selection jumpers±50±100±250±5000…1000…2000…5000…1000 *)S2S3S4*)

Factory setting. The 0…1000 Pa range is also used for the custom range setting.
The custom range is 0…1000 Pa as a default. The range can be changed by using ML-SER tool or by defining thelimits to the Modbus registers 40001…40002.

Selecting the time constant
The time constant can be selected with the jumper S1.

A. Time constant selection jumper
8 s*)

2sS1)

*

Factory setting.

ZERO POINT CALIBRATION
The purpose of the zero point calibration is to remove the possible long term drift. The zero point is calibrated
automatically every five minutes.
NOTE: The zero point calibration is also executed on the start-up and a minute after the start-up.

Produal Oy

Keltakalliontie 18, 48770 Kotka FINLAND

Tel: +358 10 219 9100 / Fax: +358 5 230 9210

Information is subject to change without prior notice.

info@produal.fi

www.produal.com

USER GUIDEPEL / PEL-M
3 (6)ML-SER TOOLWith the ML-SER tool you can change the device settings, Modbus settings for example.

Connecting ML-SER tool to the device
1.

Remove the cover.

2.

Disconnect the display cable (N models).

3.

Connect the ML-SER tool cable to the display connector.

A. Display connector
When the ML-SER is successfully connected, the pressure measurement value is displayed on the ML-SER
tool display. The connecting can take few seconds.

ML-SER menu
The device settings can be changed by using ML-SER tool. You can proceed in the menu by pressing the M and OKbuttons. The values can be changed with the ”+” and ”-” buttons. The value is accepted with the OK button. Thesettings are saved when returning the main menu. The following menu structure contains the factory settings.
The Modbus and analogue outputs are disabled when entering the menu for the measuring mode. In addition theanalogue outputs maintain the same voltage, as they were before entering the menu.

Produal Oy

Keltakalliontie 18, 48770 Kotka FINLAND

Tel: +358 10 219 9100 / Fax: +358 5 230 9210

Information is subject to change without prior notice.

info@produal.fi

www.produal.com

USER GUIDEPEL / PEL-M
4 (6)Communications menu (M models only)

The Modbus settings can be changed through the COMMUNICATIONS menu.

Custom range menu

The CUSTOM RANGE menu is for setting the custom pressure range limits. The custom range is in use when all thepressure range selection jumpers are placed.

Output menu

You can change the measurement output scales through the OUTPUT menu.

Info menu

The INFO menu can be used for checking the software version and resetting to the factory settings.
Resetting to the factory settings
1.

Press the “-“ button for five seconds in the software version display.

2.

Change the resetting dialog answer to “yes”.

3.

Press OK button.
The factory settings are now reset.

Produal Oy

Keltakalliontie 18, 48770 Kotka FINLAND

Tel: +358 10 219 9100 / Fax: +358 5 230 9210

Information is subject to change without prior notice.

info@produal.fi

www.produal.com

USER GUIDEPEL / PEL-M
5 (6)MODBUSBus properties
Protocol

RS-485 Modbus RTU

Bus speed

9600/19200/38400/57600 bit/s

Data bits

8Paritynone/odd/even

Stop bits

1Network sizeup to 127 devices per segment

NOTE: The memory durability is 10000 write cycles.

Bus termination
The Modbus can be terminated by placing the Modbus termination jumper.

A. Modbus termination jumper

Supported Modbus functions

Produal Oy

0x01

Read Coils

0x02

Read Discrete Inputs

0x03

Read Holding Registers

0x04

Read Input Registers

0x05

Write Single Coil

0x06

Write Single Register

0x0F

Write Multiple Coils

0x10

Write Multiple Registers

0x17

Read/Write Multiple Registers

Keltakalliontie 18, 48770 Kotka FINLAND

Tel: +358 10 219 9100 / Fax: +358 5 230 9210

Information is subject to change without prior notice.

info@produal.fi

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USER GUIDEPEL / PEL-M
6 (6)Modbus registers
Data type:bit
unsignedsigned= 0 or 1= unsigned integer (0…65535)= integer (-32768…32767)

Input registers (read only)
RegisterParameter description

Data type

Value

30001

Pressure measurement

signed-32768…32768-32768…32768 Pa

30002

Time constantunsigned

0…60

0…60 s

30003

Selected pressure range

unsigned

0…7

0 = -50…50 Pa
1 = -100…100 Pa
2 = -250…250 Pa
3 = -500…500 Pa
4 = 0…100 Pa
5 = 0…200 Pa
6 = 0…500 Pa
7 = 0…1000 Pa /custom *)30004

Measurement output

signed0…10000…100,0 %*)Range

The custom range is 0…1000 Pa as a default. The range can be changed by using ML-SER tool or by defining the limits to the Modbus
registers 40001…40002.

Holding registers (read / write)
RegisterParameter description

Data type

40001

Custom scale low limit

signed-10…0-1000…0 Pa

040002Custom scale high limit

signed1…10100…1000 Pa

1040003

Voltage output scale

unsigned

0-1-2

0 = 0…10 V
1 = 2…10 V
2 = 0…5 V

040004Current output scale

unsigned

0-1

0 = 4…20 mA
1 = 0…20 mA

0

Produal Oy

Keltakalliontie 18, 48770 Kotka FINLAND

Value

Tel: +358 10 219 9100 / Fax: +358 5 230 9210

Information is subject to change without prior notice.

Range

info@produal.fi

Default

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