NORVI X-Q4 – USER GUIDE

Overview #

NORVI X is a next generation modular industrial controller designed to power smart automation and IoT solutions. Built around a CPU module and a range of plug and play expansion modules, the platform scales from a handful of I/O points up to 200, giving system integrators, OEMs, and industrial engineers a flexible foundation for automation, remote monitoring, and data acquisition projects.

The NORVI X-Q4 is a 4 channel transistor output expansion module for the NORVI X range. It provides four high-side switching channels suitable for driving industrial actuators, relays, and solenoids.

Each output is optically isolated for circuit protection and uses a high-side P-channel MOSFET switch, enabling reliable control of 24 V DC loads with integrated per-channel fuse and surge protection.

The X-Q4 is not a standalone device. It needs to be paired with a NORVI X CPU module, such as the CPU ESPS3 X1, to be programmed and operated.

This guide covers installation, wiring, technical specifications, GPIO mapping, software setup, diagnostic test code, and troubleshooting.

Key Features #

• Four transistor output channels
• High-side switching, up to 24 V DC
• Integrated fuse and surge protection per channel
• Individual LED status indicators per output
• DIN rail mountable enclosure with push-in front terminals
• CE / EMC compliant

Safety Information #

• Install and wire this module only if you are a qualified electrician or trained technician familiar with industrial control equipment.
• Confirm that the host CPU is operating from a regulated 24 V DC supply. The module is powered through the expansion port, while each channel requires a separate 24 V supply to provide its 24 V output.
• Mount the module on a DIN rail inside a suitably rated enclosure. It carries an IP20 protection rating and is not designed for direct outdoor or wash down exposure.
• Keep the operating environment within minus 40 to plus 85 degrees C and avoid condensing humidity.
• Do not connect or disconnect the module from the expansion bus while the system is powered.
• Follow all local and national electrical codes applicable to industrial control panel wiring.
• This module uses GPIO IO14, IO35, IO37, and IO41 on the host CPU. Check the NORVI X Mixing Guide before combining it with other expansion modules that use the same pins.

Technical Specifications #

Electrical #

Output Specifications #

Hardware Layout & GPIO Map #

The table below lists the GPIO pins reserved for the X-Q4’s four transistor outputs.

Wiring Guide #

GPIO pin assignments for every output are listed in the Hardware Layout and GPIO Map section. This section covers how to physically wire the module.

Power Connection #

The module draws its 24 V DC supply through the expansion port shared with the CPU. There is also a separate power terminal to wire on the X-Q4 for the output load supply.

Output Wiring #

• Each output channel switches through an internal opto-isolated MOSFET between its TRx terminal and the POWER block’s 24V rail.
• Connect one lead of the load, such as a relay coil, solenoid, actuator, or indicator, to the corresponding TRx terminal. Connect the other lead of the load to GND.
• The module’s outputs are powered from the dedicated POWER terminal block containing 24V, 24V, GND, GND, and GND terminals.
• Wire an external 24 V DC supply to a POWER 24V terminal and its return to a POWER GND terminal before wiring any loads.
• When a channel is switched ON, its TRx terminal is internally connected to the POWER block’s 24 V rail, sourcing 24 V DC to the load.
• When the channel is OFF, the terminal is left floating at high impedance.
• The output block GND terminal and the POWER block GND terminals share a common ground reference.
• Since all four outputs share the same POWER supply and GND reference, use consistent wiring across all four channels.
• For inductive loads such as relay coils or solenoids, keep the load within the per-channel fuse and switching limits.

Connecting the Module to the CPU #

1. Power off the system.
2. Mount the X-Q4 on the DIN rail next to the CPU module or an adjacent expansion module.
3. Seat it firmly onto the expansion bus connector until it locks into place.
4. Wire your loads, including relays, solenoids, or actuators, to TR1 through TR4. Confirm each load stays within the module’s 24 V DC nominal rating.
5. Power the system back on.
6. Upload the module’s test sketch from the NORVI GitHub repository to confirm each channel operates correctly.

Expansion Port (50 pin) #

The X-Q4 connects through the same 50 pin expansion bus used across the NORVI X range. Pins carrying IO14, IO35, IO37, and IO41 are claimed by this module. The remaining pins remain available for other compatible expansion modules or custom wiring.

Software Setup (Arduino IDE) #

The NORVI X-Q4 is driven through the host CPU using the Arduino IDE with the ESP32 board package. Firmware examples and required libraries are maintained in the NORVI GitHub repository.

Board Configuration #

1. Install Arduino IDE

   Install the Arduino IDE and add ESP32 board support:

   Tools → Board → Boards Manager → ESP32
2. Connect the Controller

   Connect the NORVI X CPU to your computer using the USB interface.

3. Select Board and Port

   Configure the board and communication port:

   Tools → Board → ESP32 Arduino → ESP32S3 Dev Module
   Tools → Port → Select the corresponding COM/serial port

Configure Board Settings #

Under the Tools menu, configure the following settings:

Test Code Examples #

Required Libraries #

Install these via Arduino IDE → Sketch → Include Library → Manage Libraries before compiling any examples:

• Wire
• WiFi
• SPI
• TFT_eSPI
• CST816S
• Free_Fonts

Install the Required Library #

Install the Wire library through:

Search for Wire and install it if required.

Open and Upload the Test Sketch #

1. Open the X-Q4 test sketch from the NORVI GitHub repository .
2. Verify the board and port selections.
3. Click Upload to upload the test sketch to the NORVI X CPU.

Transistor Output Test #

The following excerpt drives the four X-Q4 output channels and can be used to verify output switching.

#define TR1 14
#define TR2 35
#define TR3 41
#define TR4 37

pinMode(TR1, OUTPUT);
pinMode(TR2, OUTPUT);
pinMode(TR3, OUTPUT);
pinMode(TR4, OUTPUT);

digitalWrite(TR1, HIGH); // Output 1 ON
delay(500);

digitalWrite(TR1, LOW);  // Output 1 OFF
delay(500);

Validating the Full Test Sketch #

When the module is wired correctly, the display shows OUTPUT 1 through OUTPUT 4, with each output toggling between ON and OFF in sequence.

The corresponding LED on the module should illuminate while the channel is active, and any load connected to the matching TRx terminal, such as a relay, solenoid, or indicator, should energize while ON is shown.

Troubleshooting #

Support & Resources #