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Isolated IOs and Solenoid Driver RAZN  (RV-N55-5)

The RV-N55-5 RAZN is an RTU/PLC automated peripheral with many Isolated Inputs and Outputs.

This RV-N55-5 RAZN has 13 IO features, and 8 of them are totally Isolated from the RAZN and from each other.
Technical information about the IO terminal architecture is shown on the Terminal Information page..

Communicate with Raveon’s Data Radio modem inside this RAZN. TCP/IP Ethernet ports are available, and RS-485 serial ports are on all RAZNs.
If you don’t need Ethernet order an RV-N54-5 version. Same as the RV-N55-5 except the N54 has no Ethernet and slightly lower cost and power consumption.


Wireless data radio transmits 4-20mA signals and discrete signals to matching radio receiver. The range up to 20+ Miles.

Drive a Solenoid with 2-Pins. The DSD switched voltage output drivers the solenoid, and Autonomous duration limitations in the RAZN will pulse the Solenoid correct.

Your PLC can control the Solenoid drivers, and RAZN takes MODBUS commands that can pulse a 2-Pin solenoid ON or OFF as your system wants.
And the current consumption during the Solenoid Pulse is RAZN monitored, and recorded in a register, you can read it or autonomously trigger ,or text, based on current draw.
If current is too <low, or too high>, you can monitor it by the RAZN, or the RAZN can autonomously turn something on or off to show you, or send a text message alert.

Long Range Wireless options are: narrow UHF or VHF channels, or license-free ISM band. Internal wireless modems within the RAZN can mesh RAZNs together.

To meet your needs, Raveon created this easy to use RAZN which can be a RTU or PLC, with wireless data links built into it, and many great IO features.
And it has more Programmable Logic Features within it (for Autonomous operation) than any other RTU or PLC in the world.

Use this as an RTU or PLC. You can control it to do what ever you want it to do, and it can also autonomously do what needs to be done.
This makes your system safer because it will do things if the controller or network fails.

RAZN   RV-N55-5   Isolated Product Features

We offer more features, great performance, and a reliable product at an exceptional price.

Latching 2-Pin Solenoids can be controlled by this RAZN version. 1-4 Solenoids controlled by each RAZN.

This complete solution can remotely control things that are even miles away.
It contains Two 12 pin Terminal ports, (24 pins) to implement the 13 IO features,
and have  8 IOs that are totally Isolated over hundreds of volts.

On Ethernet terminal port  processes MODBUS TCP messages, and you can send MODBUS TCP messages over-the-air.
Another terminal port links to Raveon’s Data Radio Modem in the RAZN, and communicate over-the-air to other RAZNs.

Isolated ModBus RTU 4-20mA Monitoring

High Isolation Inputs And Outputs

RAZN uses a 12 bit differential voltage sensor to measure voltage.  It can also measure current and 4-20mA current with over 1M resolution.
Use this analog IO pins for the Sensors to Monitor   Detailed information about the sensor inputs is on the Terminal Information page..
And the Autonomous features can monitor high resolution sensors and autonomously control things the way you want.

AN236_Thermotypes (pdf)  Explains how to use Thermocouple Sensors. They can be monitored many miles away with RAZN wireless technology, and can Autonomously control things you want to control.
And you can connect a RAZN to your network to monitor Thermocouple Sensors, or look at a Display or GUI and see the temperature, or have the RAZN beep or flash a light base on Temperature.

The RV-N55-5 RAZN can be a RTU connected to a PLC using a Data Radio modem to communicate over many miles.

Status Recorder and Data Logging

A RAZN can be setup to record the status of inputs, outputs, communications, or whatever you want.  It monitors on-time, off-timer, pulse-count, and many other IO parameters.
A  EEPROM within the RAZN stores the data information you want, and no battery is required. Read it remotely via wireless link, or use the Ethernet interface.
Any register that monitors inputs, outputs, status, communications, timing, events, or whatever can be logged in to real later.

Automated Peripheral

Monitoring and Controlling using MODBUS messages. Communicate using  wires, Ethernet, or long-range wireless links. All methods are available.
And you can configure the RAZN to Autonomously monitor sensors and do what every you want Autonomously to keep your system safe.

Control Latching Solenoid

The RV-N55-5 can controls a latching 2-pin Solenoid, well managed by the RAZN.   SCADA controllers can do all the controls.
The RAZN can be setup to properly pulse the SD1 and SD2 pins to manage to Latching Solenoid. By default, they pulse at 150mS to turn it On or OFF.

Robust, Reliable and Protected

The IO pins have great electrostatic discharge (ESD) and over-voltage protection. DC power input is reverse and over-voltage protected.
Internal smart CPU has watchdog timer, data stored in EEPROM, and battery powered clock.
Long-range communications uses wireless instead long copper that will fail.

High Performance Interfaces

Ethernet, RS-485, USB, and many RF options.  RAZN wireless links are super long-range communication. 1/2W to 5W UHF, VHF; 50mW-1W ISM LoRa. Verify operation and quality of connection in the field from 1 to 50 miles. The RAZN can also communicate with Raveon’s data radio modems (RV-M6, RV-M8, RV-M7, RV-M50 …).  Use these interface for the Sensors to Monitor.

Real Time Clock (RTC)

The battery backed up inside the RAZN is for the RTC that keeps track of all time, milliseconds, seconds, minutes, hours, days, weeks, months, and years.
It can be used to trigger events, and also time events and stop them when the time is over.
Timer events can turn things on or off based upon any time status you prefer.

A Myriad of Ways to Use These

Point-to-Point: The two RAZNs can work together by themselves and control what you want in isolated areas.
You can use 2-200 of these RAZNs to do what you need to control in isolated areas.
We offer more features, good performance, and a reliable product at an exceptional price.
RAZNs have Many different IO terminal features. Technology insight into IO terminals is on the Terminal Information page..

Master Control

Use a remote master controller PC, GUI, IoT server, or MODBUS master to communicate with the RAZN and control your things in isolated areas.
Some RAZNs have sensor inputs, so sensors placed in the root zone of the plants to remotely control irrigation.

Timers and Real Time Clocks

All RAZNs have a Timer Operations Actions Alerts (TOAA) feature to use its timers to do what you want and when you want to have it done.
Button inputs can trigger timers to turn remote things on or off for specific time periods.
This automated peripheral RAZN is patented with TOAA and a myriad of features. This is a complete solution to remotely control things

The RV-N55-5 Terminal Interfaces.

There are many terminal IO options available in various version of the RAZN. Here is an example of one referred to RV-N55-5 .
Terminal A has Isolated Solenoid Drivers.  Terminal B has many isolated  IO features.



Terminal A Isolated Solenoid Drivers. 

  • 4 different Solenoids can be driven by DSD IOs. (4)
  • These 4 drive 2-pin Solenoids. Short pulses turn them ON.
    Short pulses can also turn the Solenoid OFF.

Terminal B  (Isolated IOs)

  • IAI Isilated Analog Inputs monitor voltage, current, or 4-20mA. (2)
  • LI  IOs use LEDs for fully Isolated digital inputs to monitor.  (2)
  • OIDI  Optically Isolated Digital Input. (1)
  • OIDO  Optically Isolated Digital outputs (2).
  • IGND  IS the isilated Ground for OIDI and OIDO pins.

Raveon has many Complete Solutions to automatically Monitor and Control things.

Application Note:  AN258(RAZN_IOs) (pdf)  explains the Myriad of IO features the RAZN devices have.

RV-N55-5C Isolated Terminal Ports. I/O Pin Information.

RV-N55-5C has 24  IO pins  Many are Isolated inputs and Isolated Outputs!  And can drive Solenoids!

Terminal A Has:
4 of the Isolated Digital Solenoid Driver (DSD) they are used to drive: Solenoids. They are Isolated, and both DSD pairs used the input voltage (EVI&VPG).

Terminal B  Has:

2 Isolated Led Inputs (LI) that are totally Isolated from each other and the RAZN. Each has their own Isolated IGND pin.
2 Isolated Analog Inputs (IAI) Voltage or 4-20mA current inputs, are totally Isolated from each other and the RAZN. Each has their own Isolated IGND pin
3 Isolated General Purpose digital IOs  (OIDO) that work together and this set of 3 GPIOs are Isolated. Their shared GND is IGND pin. (OIDO) =Output  (OIDI) =Input

This is the Main prototype is ALL features and extra isolated IO terminals. The 9B and 9A versions are built with this same design, and they have lots on No-Place ports to make the 9B and 9A smaller versions.

Terminal Port A   (Switched Voltage Outputs and 2AI and 2 LI terminals)

Pin # 1 2 3 4 5 6 7 8 9 10 11 12
IO# 0 1 2 3 4 5 6 7    

VPG ground isolated  with all  DSD outputs.   DSD A and DSD B are connected to the 2-pin Solenoid.
Solenoid(1) uses Pin# 2&3. Solenoid(2) uses Pin# 4&5. Solenoid(3) uses Pin# 6&7. Solenoid(4) uses Pin# 8&9.

Terminal Port B (Analog inputs, Digital Outputs and Digital Input) ALL Isolated!

Pin # 1 2 3 4 5 6 7 8 9 10 11 12
IO# 12 13 14 8 8 9 9 10 10 11 11

To enable the IAI 4-20mA mode, (disables Voltage Measuring) an internal 2-pin header connector.


RV-N55-5A Isolated Terminal Ports and Solenoid Drivers.

RV-N55-5A has 12  IO pins on Terminal A.  Many are Isolated inputs and Isolated Outputs!  Fewer than the -5C version, and lower cost.

Terminal A Has:

2 of the Isolated Pulsed Solenoid Driver Outputs (SD) are used to pulse , solenoids. The are Isolated, and all 2 utilize the input voltage pin 8.
 2 Led Inputs (LI) and 2 Analog Inputs (AI) Voltage or 4-20mA current inputs are grounded the RAZN.

The RAZN has many interface options: Long-Range Wireless, Ethernet, RS485, and RS232.

Information about all the sensor inputs on all RAZN terminals is on the Terminal Information page..

This is Made in America.

Raveon designed this in California, and all RAZN technology, and the RF radios in the RAZN, are made here in America.

RAZB Device Versions have different Terminal Options.

RV-N55-5A,  RV-N55-5B, RV-N55-5C  RV-N54-5A,  RV-N54-5B, RV-N55-5C are all available.

Version C (RV-N55-5C) has both Terminals.  Version A (RV-N55-5A) has one Terminal.  Version B (RV-N55-5B) has one other Terminal.
A&B versions are slightly lower cost than C version.  C has ALL terminals on it. Each terminal has 12 pins so C has 24 pins.

List how How to Setup the RAZN to remotely control an an automated peripheral

RV-N55-5 Manage Latching Solenoids

To drive 2-Pin Latching Solenoids, up to 30 volts DC.  It pulses their ON pin, and OFF pin to control them.
It has many isolated digital inputs, outputs, voltage monitoring inputs, and isolated 4-20mA sensor inputs.

It has 2 isolated  Latching Solenoid Drivers.  An MODBUS command can be used to
send a message into the RAZN to pulse the ON pin, or the OFF pin at the duration you want to pulse it at.
Autonomous features can be setup to limit the pulse duration time, and also limit the maximum on-time duration.

To control a Solenoid :
ON: DSD A is positive, DSD B is Negative. and this causes the solenoid to turn ON
OFF: DSD B is positive, DSD A is Negative. and this causes the solenoid to turn OFF

The isolated Input Voltage is switched around to pulse the solenoid, and the VPG ground current draw is monitored by an isolated current sensor.
The isolated voltage input IAI can be used to monitor in voltage coming in to drive the Solenoids.

Here is the architecture of 2-pin latching solenoid:
A positive DC voltage pulse turns it on, and an reverse negative pulse turns it off.

RV-N55-9 Can Drive 3-Pin Solenoids.

The RV-N55-5 has Isolated IOs and Drives Solenoids that have 2-Pins.
If you need to control Solenoids that have 3-Pins (On, Off, and GND) use the RV-N55-9 version.
There are analog input sensors, and two isolated digital inputs for use in remote areas and wireless links.

Ethernet interface is an option, but most of these miniature SCADA terminals don’t need Ethernet.
RS-485 is available on this, VHF, UHF, or ISM band data radios can be incorporated into the RAZN.

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