Documentation

NORVI CPU-ESPS3-X2 – DATASHEET

Updated August 26, 2026

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 Modules4 x Digital Inputs8 x Digital Inputs16 x Digital Inputs	Relay Output Modules4 x Relay Output8 x Relay Output	Transistor Output Modules4 x Transistor Output8 x Transistor Output16 x Transistor Output
Analog Input Modules4 x Analog Inputs 0-10V4 x Analog Inputs 4-20mA	Analog Output Modules4 x Analog Outputs 0-10V / 4-20mA	Communication ModulesCellular Modem Quectel EC25Cellular Modem SIMCOM A7672
Power & Utility Modules3 x Current Transformer (Energy)			## Product Block Diagram

## Main

Range of Product	NORVI X
Product type	Modular Programmable Controller
Certifications	EN 61131-2:2007EN 61010-1:2010+A1:2019EN IEC 61010-2-201:20182014/30/EU- Electromagnetic Compatibility (EMC)Annex III, Part B, Module C
Rated supply voltage	24V DC
Communication	Wi-Fi 2.5GHz / BluetoothEthernetRS-485
Displays and Visual Indicators	2.0-inch TFT LCD Display 240*320	## Complementary

Product Unified Code	NORVI CPU-ESPS3-X2
Product Part Numbers	NORVI CPU-ESPS3-X2	## Mechanical Properties

Enclosure	NORVI X
Mounting / Installation Method	DIN RAIL
Terminal Type	Push-in terminal
Terminal Arrangement	Bottom
Length	81.00 mm
Height	104.00 mm
Width	37.50 mm	## Environment

IP degree of protection	IP20
Operating altitude	0 – 2000 meters
Operating Temperature	–10 … +85° C (14…185 °F)
Storage altitude	0 – 3000 meters
Shock resistance	15 gn for 11ms
Resistance to electrostatic discharge	4kV on contact8kV 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)	400mA
Maximum Voltage(V) Input	9V DC
Minimum Voltage(V) Input	28V DC
Recommended Power Source	1A 24V DC	## Processing

SOC / MCU	ESP32-S3-WROOM-1U-N16R2
Flash Memory	16MB
ROM	384 KB
SRAM	512 KB
PSRAM	2 MB (Quad-SPI)	## Peripherals

### Micro SD Card Support

Card Type	MicroSD
Interface	SPI
SD CARD CS	IO42
MISO	IO13
MOSI	IO11
SCLK	IO12
SD Detect	NOT CONNECTED	### Built-in Buttons

Button 1 Pin	P0	PCA9536 – IO Expander – I2C Address -0x41
Button 2 Pin	P3	PCA9536 – IO Expander – I2C Address -0x41	### Built-in Indicators

RUN Indicator	P2	PCA9536 – IO Expander – I2C Address -0x41
ERROR Indicator	P1	PCA9536 – IO Expander – I2C Address -0x41	### LCD TFT

Display Driver	ST7789
Display Size	2.0 inch
MOSI	IO11
MISO	IO13
SCLK	IO12
DIS_CS	IO45
TP RST/ DIS_RST	IO47
DIS_DC	IO46
SCL Pin (Touch Screen)	IO9
SDA Pin (Touch Screen)	IO8
RESET Pin	NOT 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
4 x Thermocouple
8 x Transistor Outputs
UART – IO
4 x RTD	## A7672X Cellular Communication Specifications

Feature	Details
Power supply	Power supply VBAT: 3.4V ~4.2V, Recommended VBAT: 3.8V
Cellular Standard	LTE Cat 1
LTE-FDD Bands	B1, B3, B5, B8
LTE-TDD Bands	B34, B38, B39, B40, B41
GSM Bands	900MHz, 1800MHz
Protocol Support	TCP/IP/IPV4/IPV6/Multi-PDP/FTP/FTPS/HTTP/HTTPS/DNS/MQTT
SMS Support	MT, MO, CB, Text, PDU mode	## Communication Channels

### RS-485 Communication

Communication Mode	HALF-DUPLEX
Transceiver	SN65HVD72
Unit Load	1/4
TX Pin	IO15
RX Pin	IO16
Terminal Arrangement		## GPIO Map (PIN Utilization)

GPIO	CPU	Expansion Port
0	BOOT Button	NC
1	SCSN – Ethernet	IO1
2	RSTN – Ethernet	IO2
3	–	–
4	INTN – Ethernet	IO4
5		IO5
6		IO6
7		IO7
8	SDA	SDA
9	SCL	SCL
10		IO10
11	MOSI	MOSI
12	SCLK	SCLK
13	MISO	MISO
14		IO14
15	RS485 – TX	IO15
16	RS485 – RX	IO16
17	MODEM – TX1	TX1
18	MODEM – RX1	RX1
19	USB – DN	D_N
20	USB – DP	D_P
21		IO21
35		IO11
36		IO36
37		IO13
38	PCA9536 – RESET	RST_PCA
39	MODEM – RESET	IO39
40		IO40
41		IO12
42	SD CARD – CS	NC
45	CS – TFT DISPLAY	NC
46	DC – TFT DISPLAY	NC
47	RESET – TFT DISPLAY	NC
48	INTERRUPT – TOUCH PANEL	NC	Note: For the N16R8 version, these GPIOs are not available. They are supported only on the standard version.

## Expansion Port

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	PCA9539I2C 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	IO12	IO41
26	IO12	IO36
27	IO13	IO37
28	IO14	IO14
29	RS485_TX	IO15
30	GND	—-
31	GND	—-
32	RS485_RX	IO16
33	P1_1	P1_1	PCA9539I2C Address 0x75
34	P1_2	P1_2
35	IO21	IO21	ESP32-S3
36	GND	—-
37	GND	—-
38	P1_3	P1_3	PCA9539I2C Address 0x75
39	P1_4	P1_4
40	P1_5	P1_5
41	IO39	IO39	ESP32-S3
42	IO40	IO40
43	IO36	IO36
44	NC	—-
45	NC	—-
46	GND	—-
47	5V	5V	Power
48	GND	GND
49	24V	24V
50	24V	24V		Product Type	MCU / PSRAM	Expansion Compatibility	Notes
—	—	—	—
Standard Product	ESP32-S3 (N16R2) – PSRAM via QSPI	All expansion modules supported	–
Customized Product	ESP32-S3 (N16R8) – PSRAM via OPI	All except X-Q4 expansion	X-Q4 not supported on this variant

Was this documentation helpful?