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NORVI CPU-ESPS3-X2 – DATASHEET

Updated on March 5, 2026

5 min read

NORVI X is a next-generation modular industrial controller designed to power smart automation and IoT solutions. With a powerful CPU module and plug-and-play expansion modules, it scales up to 200 inputs and outputs – delivering unmatched flexibility, connectivity, and reliability.

Product Features #

  • Based on ESP32-S3-WROOM
  • TFT SPI Display with touch input
  • Programmable Controller for IoT with 2G / 4G Cellular Communication
  • Built-in RS-485 Communication
  • Wi-Fi, Ethernet, and Bluetooth connectivity
  • IoT-grade connectivity
  • DS3231 RTC
  • DIN-Rail mount

Expansions Supported #

Digital Input Modules
4 x Digital Inputs
8 x Digital Inputs
16 x Digital Inputs		Relay Output Modules
4 x Relay Output
8 x Relay Output		Transistor Output Modules
4 x Transistor Output
8 x Transistor Output
16 x Transistor Output
Analog Input Modules
4 x Analog Inputs 0-10V
4 x Analog Inputs 4-20mA		Analog Output Modules
4 x Analog Outputs 0-10V / 4-20mA		Communication Modules
Cellular Modem Quectel EC25
Cellular Modem SIMCOM A7672
Power & Utility Modules
3 x Current Transformer (Energy)

Product Block Diagram #

Main #

Range of ProductNORVI X
Product typeModular Programmable Controller
CertificationsEN 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 voltage24V DC
CommunicationWi-Fi 2.5GHz / Bluetooth
Ethernet
RS-485
Displays and Visual Indicators2.0-inch TFT LCD Display 240*320

Complementary #

Product Unified CodeNORVI CPU-ESPS3-X2
Product Part NumbersNORVI CPU-ESPS3-X2

Mechanical Properties #

EnclosureNORVI X
Mounting / Installation MethodDIN RAIL
Terminal TypePush-in terminal
Terminal ArrangementBottom
Length81.00 mm
Height104.00 mm
Width37.50 mm

Environment #

IP degree of protectionIP20
Operating altitude0 – 2000 meters
Operating Temperature–10 … +85° C (14…185 °F)
Storage altitude0 – 3000 meters
Shock resistance15 gn for 11ms
Resistance to electrostatic discharge4kV on contact
8kV on air
Resistance to electromagnetic fields10 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)400mA
Recommended Power Source1A 24V DC

Processing #

SOC / MCUESP32-S3-WROOM-1U-N16R2
Flash Memory16MB
ROM384 KB
SRAM512 KB
PSRAM2 MB (Quad-SPI)

Peripherals #

Micro SD Card Support #

Card TypeMicroSD
InterfaceSPI
SD CARD CSIO42
MISOIO13
MOSIIO11
SCLKIO12
SD DetectNOT CONNECTED

Built-in Buttons #

Button 1 PinP0PCA9536 – IO Expander – I2C Address -0x41
Button 2 PinP3PCA9536 – IO Expander – I2C Address -0x41

Built-in Indicators #

RUN IndicatorP2PCA9536 – IO Expander – I2C Address -0x41
ERROR IndicatorP1PCA9536 – IO Expander – I2C Address -0x41

LCD TFT #

Display DriverST7789
Display Size2.0 inch
MOSIIO35
MISOIO37
SCLKIO36
CSIO47
RSTIO45
DCIO46
SCL Pin (Touch Screen)IO9
SDA Pin (Touch Screen)IO8
RESET PinNOT CONNECTED

INPUTS and OUTPUTS #

An expansion module from NORVI Controllers should be used to add I/O to the CPU Module.
Refer products section Link for information on Expansion Modules.

Currently Available Expansion Modules are

4 x Digital Inputs
4 x Relay Outputs
4 x Transistor Outputs
4 x Analog Inputs 0-10V
4 x Analog Inputs 4-20mA
4 x Analog Outputs 0-10V / 4-20mA
8 x Digital Inputs
16 x Digital Inputs
8 x Relay Outputs
16 x Transistor Outputs
Thermocouple x 4
8 x Transistor Outputs
UART – IO
4 x RTD

A7672X Cellular Communication Specifications #

FeatureDetails
Power supplyPower supply VBAT: 3.4V ~4.2V, Recommended VBAT: 3.8V
Cellular StandardLTE Cat 1
LTE-FDD BandsB1, B3, B5, B8
LTE-TDD BandsB34, B38, B39, B40, B41
GSM Bands900MHz, 1800MHz
Protocol SupportTCP/IP/IPV4/IPV6/Multi-PDP/FTP/FTPS/HTTP/HTTPS/DNS/MQTT
SMS SupportMT, MO, CB, Text, PDU mode

Communication Channels #

RS-485 Communication #

Communication ModeHALF-DUPLEX
TransceiverSN65HVD72
Unit Load1/4
Flow Control / Direction Control PinIO41
TX PinIO15
RX PinIO16
Terminal ArrangementNORVI CPU-ESPS3-X2 RS485 Terminal Arrangement

GPIO Map (PIN Utilization) #

GPIOCPUExpansion PortType / RTCTypical Usage
0BOOT ButtonI/O/T (Yes)Boot, GPIO
1SCSN – EthernetIO1I/O/T (Yes)ADC input, touch pad
2RSTN – EthernetIO2I/O/T (Yes)ADC input, touch pad
3I/O/T (Yes)GPIO, JTAG control
4INTN – EthernetIO4I/O/T (Yes)ADC input, touch pad
5IO5I/O/T (Yes)ADC input, touch pad
6IO6I/O/T (Yes)ADC input, touch pad
7IO7I/O/T (Yes)ADC input, touch pad
8SDASDAI/O/T (Yes)ADC input, touch pad
9SCLSCLI/O/T (Yes)ADC input, touch pad
10IO10I/O/T (Yes)ADC input, touch pad
11MOSIMOSII/O/T (Yes)ADC input, touch pad
12SCLKSCLKI/O/T (Yes)ADC input, touch pad
13MISOMISOI/O/T (Yes)ADC input, touch pad
14IO14I/O/T (Yes)ADC input, touch pad
15RS485 – TXI/O/T (Yes)UART flow control
16RS485 – RXI/O/T (Yes)UART flow control
17MODEM – TX1I/O/T (Yes)UART TX
18MODEM – RX1I/O/T (Yes)UART RX
19USB – DNI/O/T (Yes)USB / UART1 RTS
20USB – DPI/O/T (Yes)USB / UART1 CTS
21IO21I/O/T (Yes)I²C SDA, GPIO
26I/O/TPWM, GPIO
27I/O/TPWM, GPIO
28I/O/TFree only if no PSRAM
29I/O/TFree only if no PSRAM
30I/O/TFree only if no PSRAM
31I/O/TGPIO, SPI
32I/O/TJTAG TCK, GPIO
33I/O/TJTAG TDO, GPIO
34I/O/TJTAG TDI, GPIO
35IO11I/O/TJTAG TMS, GPIO
36IO12I/O/TSerial RX
37IO13I/O/TSerial TX
38PCA9536 – RESETI/O/TBoot config
39IO39I/O/TBoot config
40IO40I/O/TDifferential SPI
41RS485 – FCI/O/TDifferential SPI
42SD CARD – CS
43
44
45CS – TFT DISPLAY
46DC – TFT DISPLAY
47RESET – TFT DISPLAY
48INTERRUPT – TOUCH PANEL

Expansion Port

PIN INDEXPurposeGPIOSOURCE
1MOSIIO11ESP32-S3
2MISOIO13
3SCLKIO12
4GND—-
5SCLIO9
6SDAIO8
7GND—-
8RX1IO18
9TX1IO17
10GND—-
11D+—-
12D-—-
13GND—-
14CS1P1_0PCA9539
I2C Address 0x75
15CS2P0_7
16CS3P0_6
17CS4P0_5
18IO1IO1ESP32-S3
19IO2IO2
20IO4IO4
21IO5IO5
22IO6IO6
23IO7IO7
24IO10IO10
25IO11IO35
26IO12IO36
27IO13IO37
28IO14IO14
29RS485_TXIO15
30GND—-
31GND—-
32RS485_RXIO16
33P1_1P1_1PCA9539
I2C Address 0x75
34P1_2P1_2
35IO21IO21ESP32-S3
36GND—-
37GND—-
38P1_3P1_3PCA9539
I2C Address 0x75
39P1_4P1_4
40P1_5P1_5
41IO39IO39ESP32-S3
42IO40IO40
43NC—-
44NC—-
45NC—-
46GND—-
475V5VPower
48GNDGND
4924V24V
5024V24V
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