Related Manuals for Novus NP785
Summary of Contents for Novus NP785
- Page 1 NP785 Ultra Low Differential Pressure Transmitter INSTRUCTION MANUAL V1.0x G GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com NOVUS AUTOMATION 1/28...
-
Page 2: Table Of Contents
INPUT PARAMETERS .....................................22 8.3.3 OUTPUT PARAMETERS ....................................23 8.3.3.1 TRANSMISSION OUTPUT CONFIGURATION .............................. 23 8.3.3.2 ALARM OUTPUT CONFIGURATION ................................24 8.3.4 DIAGNOSTICS .........................................25 8.3.5 FINALIZATION .........................................26 TECHNICAL SPECIFICATION ..................................27 WARRANTY ........................................28 GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com 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. GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com NOVUS AUTOMATION 3/28... -
Page 4: Presentation
PRESENTATION The NP785 Ultra Low Differential Pressure Transmitter uses a high precision differential pressure sensor and has the stability required to perform measurements in applications that require high sensitivity. It is a micro processed device with two communication interfaces: USB and RS485 via Modbus RTU protocol. -
Page 5: Identification
Fig. 01 – NP785 Ultra Low Differential Pressure Transmitter DEVICE MODEL In order to adapt to the most varied market needs, the NP785 Ultra Low Differential Pressure Transmitter line is available in two models: Model NP785-05 of ± 5 mbar. -
Page 6: Instalation
MECHANIC INSTALATION The NP785 Ultra Low Differential Pressure Transmitter is designed to have its housing fixed to a 35 mm DIN rail, as shown in Fig. 02. The 35 mm DIN rail installation must be carried out after the device has been configured. -
Page 7: Dimension
4.1.1 DIMENSION Fig. 04 shows the dimensions of the device: Fig. 04 – NP785 Ultra Low Differential Pressure Transmitter Dimension ELECTRICAL INSTALLATION 4.2.1 RECOMMENDATIONS FOR INSTALLATION Signal conductors should run through the plant separately from the power supply and output conductors. If possible, in grounded conduits. -
Page 8: Electrical Connections
Table 02 – Electrical 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 that the device be configured before it is attached to the DIN rail. -
Page 9: Configuration
CONFIGURATION The 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 NXperience software, but the device can also be configured via Modbus RTU by writing directly in their configuration registers. -
Page 10: Analog Output Configuration
The device is factory set with the 4-20 mA electrical standard and the pressure unit in mbar. Any changes in the pressure unit configuration readjust the values of the transmission limits to the operating limits of the device. GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com NOVUS AUTOMATION 10/28... -
Page 11: Usb Interface
For MONITORING, any supervision (SCADA) or laboratory software that supports Modbus RTU communication over a serial communication port can be used. When connected to a computer USB port, NP785 Ultra Low Differential Pressure Transmitter is recognized as a conventional serial port (COM x). -
Page 12: Serial Communication
SERIAL COMMUNICATION The 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 13 50,98 mmH2O mmH2O: 2 decimal -500,0 Pa 500,0 Pa places Pa: 1 decimal place HR_BAUD Baud Rate* uint16 N.A. HR_PRTY Parity* uint16 N.A. HR_ADDR Slave address uint16 N.A. GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com NOVUS AUTOMATION 13/28...
- Page 14 * Check the Table 10 for more information about the device configuration registers. Table 05 – NP785-05 Model: Configuration Registers Table The registers 103 to 106, 123 to 126, 157 and 158 must be used by the user to enter the values of their respective parameters. If they are within limits, the device will automatically pass these values to registers 108 to 111, 132 to 135, 159 and 160, which show the values considered during the operation.
- Page 15 HR_PRESS_MAX_H -203,94 mmH2O 203,94 mmH2O mmH2O: 2 decimal -2000,0 Pa 2000,0 Pa places Pa: 1 decimal place Table 07 – NP785-20 Model:16:30 Output Registers Table GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com NOVUS AUTOMATION 15/28...
- Page 16 NP785 Model: Configuration Registers Table Address Name Description Type Standard Min. Max. Decimal Places Sensor type: 5 mbar or HR_SENSOR_TYPE uint16 N.A. 20 mbar Retransmission output HR_OUT1_TYPE uint16 N.A. type* mbar: 3 decimal places HR_OUT1_IN_HIGH_LIMIT 20 mbar -20 mbar 20 mbar...
- Page 17 * Check the Table 10 for more information about the device configuration registers. Table 08 - NP785 Model: Configuration Registers Table The registers 103 to 106, 123 to 126, 157 and 158 must be used by the user to enter the values of their respective parameters. If they are within limits, the device will automatically pass these values to registers 108 to 111, 132 to 135, 159 and 160, which show the values considered during the operation.
- Page 18 Pa: 1 decimal place ** Check the Table 11 for more information about the device configuration registers. Table 09 – NP785-20 Model: Information Registers Table 10 lists the device configuration registers and the captions for their respective values: Register...
- Page 19 Indicates that the lower limit of the range has been DIAG_UNDER_RANGE exceeded. HR_DIAGNOSE04 Indicates that the lower limit of the range has been DIAG_OVER_RANGE exceeded. Table 11 – Diagnostic Bits GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com NOVUS AUTOMATION 19/28...
-
Page 20: Nxperience Software
When opening NXperience software, the home screen is displayed: Fig. 08 – NXperience home screen To communicate with the software, the NP785 Ultra Low Differential Pressure Transmitter must be connected to the computer and with the previously installed USB drivers. - Page 21 Finalization: On this tab, the user can send the configuration to the device, save the configurations in a file, update the device firmware and configure a password to protect the device. Back: Returns to NXperience home screen. GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com NOVUS AUTOMATION 21/28...
-
Page 22: General Parameters
Firmware Version, and Model are non-editable parameters that are read by the software and directly from the device. In order for the NP785 Ultra Low Differential Pressure Transmitter to be recognized as a slave device in a Modbus network, you must assign a unique Modbus Address in the network and configure the Baud Rate and Parity. -
Page 23: Output Parameters
In case of sensor failure, the quantity to be transmitted by the analog output will go into Error Mode. For the error condition, you must select the High, Low or Low-High state (check Table 03). GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com NOVUS AUTOMATION 23/28... -
Page 24: Alarm Output Configuration
Upper Limit and Lower Limit are the differential pressure values that act as alarm activation conditions that, together with the Hysteresis, define the barrier to be exceeded so that the channel exits the alarm situation. For more information about the alarm configuration, check the Alarm Configuration section. GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com NOVUS AUTOMATION 24/28... -
Page 25: Diagnostics
In the output diagnostics, you can force the output in order to verify the correct operation of the device and test the settings applied to the NP785 Differential Pressure Transmitter. -
Page 26: Finalization
Fig. 23 – Finalization parameters GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com NOVUS AUTOMATION 26/28... -
Page 27: Technical Specification
TECHNICAL SPECIFICATION NP785-05 MODEL NP785-20 MODEL Measuring Range -5 to 5 mbar -20 to 20 mbar Burst Pressure 200 mbar 400 mbar Proof Pressure* 100 mbar 300 mbar Accuracy 1 % of maximum range F.S.** 1 % of maximum range F.S.** 7.630E-4 mbar...
Need help?
Do you have a question about the NP785 and is the answer not in the manual?
Questions and answers