Related Manuals for Novus NP785
Summary of Contents for Novus NP785
- Page 1 NP785 Ultra Low Differential Pressure Transmitter USER GUIDE V 2.0x C Recommended for devices with firmware version V 2.0x and higher. NOVUS AUTOMATION 1/28...
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Page 2: Table Of Contents
CONFIGURING THE DEVICE ..................................20 8.6.1 GENERAL / BASIC ..................................20 8.6.2 COMMUNICATION..................................20 8.6.3 INPUT ......................................21 8.6.4 OUTPUT ......................................21 8.6.5 ALARM ......................................22 8.6.6 DIAGRAM ......................................22 8.6.7 SECURITY .......................................23 8.6.8 FIRMWARE UPDATE..................................23 PERFORMING DIAGNOSTICS ................................24 TECHNICAL SPECIFICATION ..................................26 WARRANTY ........................................28 NOVUS AUTOMATION 2/28... -
Page 3: Safety Alerts
All safety recommendations appearing in this manual must be followed to ensure personal safety and prevent damage to the instrument or system. If the instrument is used in a manner other than that specified in this manual, the device’s safety protections may not be effective. NOVUS AUTOMATION 3/28... -
Page 4: Presentation
Its transmission output can be configured to operate in the 0-10 V and 4-20 mA standards, with adjustable range within the sensor limits, and has adjustable behavior options in case of sensor error. The SigNow software and app are the key tools for configuring, downloading, and analyzing NP785 data. They allow you to explore all features of the device. -
Page 5: Identification
Figure 1 shows the information available in the device housing: Figure 1 – NP785 DEVICE MODEL The NP785 Ultra Low Differential Pressure Transmitter line is available in 7 models: NP785-50 of ± 50 Pa • NP785-100 of ± 100 Pa •... - Page 6 -41000.0 -40000 40000 42504.0 × -1062.600 -1025.000 -1000 1000 1062.600 mbar -15939.00 -15375.00 -15000 15000 15939.00 mpsi 1000 mbar -425.040 -410.000 -400 425.040 inH2O -11157.30 -10762.50 -10500 10500 11157.30 mmH2O -109872.8 -105985.0 -103400 103400 109872.8 Measuring ranges NOVUS AUTOMATION 6/28...
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Page 7: Installation
INSTALLATION MECHANICAL INSTALLATION NP785 Ultra Low Differential Pressure Transmitter is designed to be fixed on 35 mm DIN rail, as shown in Figure 2. The 35 mm DIN rail installation must be carried out after the device has been configured. -
Page 8: Dimension
Remember to pass all wires through a cable clip before completing electrical connections. • When closing the housing, the cover should be placed again properly, ensuring proper sealing for this device. • 4.2.3 ELECTRICAL CONNECTIONS Figure 5 shows the device electrical connections: Figure 5 – Electrical connections Electrical connections NOVUS AUTOMATION 8/28... -
Page 9: Usb Connection
RS485 connections 4.2.4 USB CONNECTION The USB connection is used exclusively for the device diagnosis and configuration. The USB interface is on the NP785 Ultra Low Differential Pressure Transmitter side. It is recommended to configure the device before attached it to the DIN rail. -
Page 10: Settings
SETTINGS NP785 Ultra Low Differential Pressure Transmitter is configurable by any of its interfaces. Due to the ease of use of the interface, it is recommended to configure via USB using the SigNow software or app, but the device can also be configured via Modbus RTU by writing directly in their configuration registers. -
Page 11: Analog Output Configuration
The device leaves the factory with the 4-20 mA electrical standard and with the pressure unit configured according to the selected model (see Table 1). Any changes in the pressure unit configuration readjust the values of the transmission limits to the device operating limits. NOVUS AUTOMATION 11/28... -
Page 12: Usb Interface
To MONITOR, you can use any supervisory (SCADA) or laboratory software that supports Modbus RTU communication over a serial communication port. When connected to the USB interface of a computer, NP785 Ultra Low Differential Pressure Transmitter will be recognized as a conventional serial port (COM x). -
Page 13: Serial Communication
SERIAL COMMUNICATION NP785 Ultra Low Differential Pressure Transmitter can be recognized on an RS485 network with Modbus RTU protocol as a slave device. All the configurable parameters of the device can be read and/or written via serial communication. The device supports writing in Broadcast mode, using the slave address Modbus 0. - Page 14 Baud Rate 4 → 19200 5 → 38400 6 → 57600 7 → 115200 0 → No parity HR_PRTY Parity 1 → Odd parity 2 → Even parity HR_ADDR Slave Address Modbus RS485 communication port configuration registers NOVUS AUTOMATION 14/28...
- Page 15 In case of extrapolation of limits, this condition will be signaled in register 343 (HR_DIAGNOSE03). For 32-bit data, the two registers that compose them must be read and/or written for the values to be updated. NOVUS AUTOMATION 15/28...
- Page 16 Minimum Maximum HR_PRESS_HIGH_LIMIT Depends on model and unit of measure Maximum limit selected¹ HR_PRESS_HIGH_LIMIT_H HR_PRESS_LOW_LIMIT Depends on model and unit of measure Minimum limit selected¹ HR_PRESS_LOW_LIMIT_H ¹ Maximum and minimum values according to Table 1. Limit registers NOVUS AUTOMATION 16/28...
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Page 17: Signow Software And App
SIGNOW APP SigNow app is the ideal tool for the daily use of NP785 Ultra Low Differential Pressure Transmitter. It is compatible with both Android and iOS devices, making it accessible to everyone. SigNow app can be downloaded for free from Google Play Store or App Store. -
Page 18: Connecting To Signow Software
Figure 10 – Selecting a device When you click on the NP785 Ultra Low Differential Pressure Transmitter icon, the software will read the current device configuration and present all available features, as shown in the figure below: Figure 11 – Device configuration screen The configuration screen is divided into 8 sections: General, Communication, Input, Output, Alarm, Diagram, Security, and Firmware Update. -
Page 19: Connecting To Signow App
1) Manual: Allows you to access the online manual for the device. 2) Support: Allows you to access the Technical Support page. 3) Save: Allows you to save the settings made so far. 4) Send: Allows you to send the settings to the device. NOVUS AUTOMATION 19/28... -
Page 20: Configuring The Device
Figure 15 – Communication screen For NP785 Ultra Low Differential Pressure Transmitter to be recognized as a slave device in an RS485 Modbus network, you need to set a unique Modbus address on the network, as well as Baud Rate and Parity. -
Page 21: Input
2. If you select the option to reset the Offset, the output will be 0. 8.6.4 OUTPUT This screen allows you to configure the analog output of the device: Figure 17 – Alarm screen NOVUS AUTOMATION 21/28... -
Page 22: Alarm
For more information about the alarm configuration, see ALARM SETTINGS section. 8.6.6 DIAGRAM This screen shows information about the basic electrical connections and the dimension of the device: Figure 19 – Diagram screen NOVUS AUTOMATION 22/28... -
Page 23: Security
This screen allows you to update the firmware of the device: Figure 21 – Firmware update screen The firmware update process is standard for all NOVUS devices linked to SigNow and can be viewed in detail in the software manual. NOVUS AUTOMATION... -
Page 24: Performing Diagnostics
To access it, you must click Diagnostic, select the USB option, and then the connected device: Figure 23 – Selecting a device Since the app performs device recognition from the first moment of connection, the above process should be disregarded if you are using SigNow app. NOVUS AUTOMATION 24/28... - Page 25 In the Alarm Diagnostic screen, you can force the following conditions: 1) Off, if none of the options are checked; 2) Forced-On, if the Turns On option is checked; or 3) Forced-Off, if the Turns Off option is checked. NOVUS AUTOMATION 25/28...
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Page 26: Technical Specification
TECHNICAL SPECIFICATION NP785-50PA NP785-100PA NP785-05 NP785-20 NP785-68 NP785-400 NP785-1000 MODEL MODEL MODEL MODEL MODEL MODEL MODEL -1000 to 1000 Measurement Range -50 to 50 Pa -100 to 100 Pa -5 to 5 mbar -20 to 20 mbar -68 to 68 mbar... - Page 27 ***** The resolution shown corresponds to the digital values read from registers 0 to 5 and is lower than the sensor resolution due to the limitation of decimal places. The digital values read from registers 6 to 11 have the same resolution as the sensor. Technical specifications NOVUS AUTOMATION 27/28...
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Page 28: Warranty
10 WARRANTY Warranty conditions are available on our website www.novusautomation.com/warranty. NOVUS AUTOMATION 28/28...
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