---
title: "NORVI X-MX4-CI – DATASHEET"
description: "The NORVI X-MX4-CI is a mixed I/O expansion module for the NORVI X industrial controller, combining 4 digital inputs, 4 transistor outputs, and 4 analog inputs in a single module. It provides flexible I/O for monitoring sensors, controlling field devices,…"
url: "https://norvi.io/docs/norvi-x-mx4-ci-datasheet/"
updated: "2026-10-23"
category: "NORVI X / NORVI X-MX4-CI"
---

# NORVI X-MX4-CI – DATASHEET

The NORVI X-MX4-CI is a mixed I/O expansion module for the NORVI X industrial controller, combining 4 digital inputs, 4 transistor outputs, and 4 analog inputs in a single module. It provides flexible I/O for monitoring sensors, controlling field devices, and measuring analog signals through the NORVI X expansion interface.

## Product Features

- 4 × Digital Inputs
- 4 × Transistor Outputs
- 4 × Analog Inputs
- Mixed I/O in a Single Expansion Module
- Flexible Sensor and Field Device Interfacing
- NORVI X Expansion Interface Compatible
- Suitable for Industrial Automation and Control
- Compact DIN-Rail Mountable Design

## Applications

- Industrial automation and control
- Sensor and switch monitoring
- Digital actuator and device control
- Analog sensor signal measurement
- Process monitoring and control
- Machine automation
- Motor and equipment control
- General-purpose industrial I/O expansion

![NORVI X-MX4-CI](https://norvi.io/wp-content/uploads/2026/10/NORVI-X-MX4-FRONT-FACE.jpg)

## Product Block Diagram

![Product Block Diagram](https://norvi.io/wp-content/uploads/2026/10/NORVI-X-MX4-CI-Summary-Image.jpg)

## Main

| Range of Product | NORVI X |
| --- | --- |
| Product type | Expansion Module for NORVI X Series |
| Certifications | EN 61131-2:2007 EN 61010-1:2010+A1:2019 EN IEC 61010-2-201:2018 2014/30/EU- Electromagnetic Compatibility (EMC) Annex III, Part B, Module C |
| Rated supply voltage | 24V DC |

## Complementary

| Product Part Numbers | NORVI X-MX4-CI |
| --- | --- |

## Mechanical Properties

| Enclosure | NORVI X-N1 |
| --- | --- |
| Mounting / Installation Method | DIN RAIL |
| Terminal Type | Push-in terminal |
| Terminal Arrangement | Front |
| Length | 81.00 mm |
| Height | 104.00 mm |
| Width | 23.00 mm |

![NORVI X-MX4-CI](https://norvi.io/wp-content/uploads/2026/10/Measurements_NORVI-X-MX4.jpg)

## Environment

| IP degree of protection | IP20 |
| --- | --- |
| Operating altitude | 0 - 2000 meters |
| Operating Temperature | - –40 … +85° C (-40...185 °F) |
| Storage altitude | 0 - 3000 meters |
| Shock resistance | 15 gn for 11ms |
| Resistance to electrostatic discharge | 4kV on contact 8kV on air |
| Resistance to electromagnetic fields | 10 V/m (80 MHz ...... 1GHz) 3 V/m (1.4 MHz ...... 2 GHz) 1 V/m (2 MHz ...... 3 GHz) |

## Electrical Characteristics

### *Grid Powered Devices*

| Rated Supply Voltage (V) | 24V DC |
| --- | --- |
| Current Consumption (mA) | 2500mA @ 24VDC |

## I/O Specifications

### Digital Inputs

| Parameter | Specification |
| --- | --- |
| Number of Inputs | 4 Digital Inputs |
| Input Type | Isolated 24 V DC |
| Isolation Voltage | > 1500 Vrms (optical isolation from CPU) |
| Input Voltage Range | 0 – 30 V DC |
| Logic Low (OFF) | < 5 V DC |
| Logic High (ON) | > 15 V DC |
| Input Impedance | Approx. 3.3 kΩ |
| Input Current | ~ 7 mA @ 24 V DC |
| Switching Frequency | Up to 1 kHz |
| Protection | Over-voltage, Reverse Polarity, ESD Protected |
| Isolation Type | Opto-coupler isolation per channel |
| Interface to CPU | NORVI X Expansion Port (Direct GPIO) |
| Status Indicators | 4 × LED Input Indicators |
| Power Supply | 24 V DC (shared with CPU via expansion port) |
| Communication Bus | Internal Expansion Bus |
| Connector Type | Push-in Terminal Block |

### Transistor Outputs

| Parameter | Specification |
| --- | --- |
| Number of Outputs | 4 Transistor Output Channels |
| Transistor Output Current | 0.5A |
| Maximum Supply Voltage | 24V DC |
| Maximum Supply Current | 4 - 5A |
| Output Type | High-Side Switch |
| Switching Transistor | P-Channel MOSFET |
| Isolation Type | Optocoupler Isolation |
| Protection (Per Channel) | Per-Channel Resettable PTC Fuse • Hold Current: 0.5 A at 20°C • Trip Current: 1 A |
| Output Diagnostics | Individual LED indicators |
| Field Connector | 4-Pin Terminal Block |

### Analog Inputs

| Number of Analog Inputs | 4 |
| --- | --- |
| Analog Input Measurement Range | 4 – 20mA / 0 - 20mA |
| Analog to Digital Converter (ADC) | ADS1115 |
| Analog to Digital Converter (ADC) Resolution | 16-bit |
| Analog to Digital Converter (ADC) Communication | I2C |
| ADC Power Supply | 3.3V |

## Terminal Configuration

| No. | Terminal | Description |
| --- | --- | --- |
| 1 | IN1 | Digital Input 1 |
| 2 | IN2 | Digital Input 2 |
| 3 | IN3 | Digital Input 3 |
| 4 | IN4 | Digital Input 4 |
| 5 | DCOM | Isolated Digital Ground |
| 6 | TR1 | Transistor Output 1 |
| 7 | TR2 | Transistor Output 2 |
| 8 | TR3 | Transistor Output 3 |
| 9 | TR4 | Transistor Output 4 |
| 10 | GND | Ground |
| 11 | AIN1 | Analog Input 1 |
| 12 | AIN2 | Analog Input 2 |
| 13 | AIN3 | Analog Input 3 |
| 14 | AIN4 | Analog Input 4 |
| 15 | AGND | Analog Ground |
| 16 | GND | Ground |
| 17 | GND | Ground |
| 18 | GND | Ground |

## GPIO Utilization

| Utilization | Connection to CPU |
| --- | --- |
| SCL | IO9 |
| SDA | IO8 |

## I2C Address Selection (Analog Inputs)

| Address Selection |  |  |  |  |
| --- | --- | --- | --- | --- |
| DIP 1 | DIP 2 | DIP 3 | DIP 4 | Address |
| ON | OFF | OFF | OFF | 0x49 |
| OFF | ON | OFF | OFF | 0x4B |
| OFF | OFF | ON | OFF | 0x4A |
| OFF | OFF | OFF | ON | 0x48 |

## I2C Address Selection (Digital Inputs)

| Address Selection |  |  |  |  |
| --- | --- | --- | --- | --- |
| DIP 1 | DIP 2 | DIP 3 | DIP 4 | Address |
| OFF | OFF |  |  | 0x73 |
| ON | OFF |  |  | 0x72 |
| OFF | ON |  |  | 0x71 |
| ON | ON |  |  | 0x70 |

## Expansion Port

Utilized GPIO Connections are highlighted in Green. They cannot be used for any other purpose with this module connected.

| PIN INDEX | Purpose | GPIO | SOURCE |
| --- | --- | --- | --- |
| 1 | MOSI | IO11 | ESP32-S3 |
| 2 | MISO | IO13 |  |
| 3 | SCLK | IO12 |  |
| 4 | GND | ---- |  |
| 5 | SCL | IO9 |  |
| 6 | SDA | IO8 |  |
| 7 | GND | ---- |  |
| 8 | RX1 | IO18 |  |
| 9 | TX1 | IO17 |  |
| 10 | GND | ---- |  |
| 11 | D+ | ---- |  |
| 12 | D- | ---- |  |
| 13 | GND | ---- |  |
| 14 | CS1 | P1_0 | PCA9539 I2C Address 0x75 |
| 15 | CS2 | P0_7 |  |
| 16 | CS3 | P0_6 |  |
| 17 | CS4 | P0_5 |  |
| 18 | IO1 | IO1 | ESP32-S3 |
| 19 | IO2 | IO2 |  |
| 20 | IO4 | IO4 |  |
| 21 | IO5 | IO5 |  |
| 22 | IO6 | IO6 |  |
| 23 | IO7 | IO7 |  |
| 24 | IO10 | IO10 |  |
| 25 | IO11 | IO35 |  |
| 26 | IO12 | IO41 |  |
| 27 | IO13 | IO37 |  |
| 28 | IO14 | IO14 |  |
| 29 | RS485_TX | IO15 |  |
| 30 | GND | ---- |  |
| 31 | GND | ---- |  |
| 32 | RS485_RX | IO16 |  |
| 33 | P1_1 | P1_1 | PCA9539 I2C Address 0x75 |
| 34 | P1_2 | P1_2 |  |
| 35 | IO21 | IO21 | ESP32-S3 |
| 36 | GND | ---- |  |
| 37 | GND | ---- |  |
| 38 | P1_3 | P1_3 | PCA9539 I2C Address 0x75 |
| 39 | P1_4 | P1_4 |  |
| 40 | P1_5 | P1_5 |  |
| 41 | IO39 | IO39 | ESP32-S3 |
| 42 | IO40 | IO40 |  |
| 43 | NC | ---- |  |
| 44 | NC | ---- |  |
| 45 | NC | ---- |  |
| 46 | GND | ---- |  |
| 47 | 5V | 5V |  |
| 48 | GND | GND |  |
| 49 | 24V | 24V |  |
| 50 | 24V | 24V |  |

## REVISION HISTORY

| Rev. | Date | Change Description | Board Revision |
| --- | --- | --- | --- |
| 1.0 | 29/09/2026 | Initial release | V1 |