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EC-M11-EG-C3-B95 – DATASHEET

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Product Features #

  • ESP32-WROOM32 Module
  • NB-IoT module
  • Load Cell Input
M11 E Series

Main #

Range of ProductNORVI EC M11
Product TypeProgrammable Node
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
CommunicationWiFI / Bluetooth
RS 485
Inputs and Outputs1 x Load Cell Input
Displays and Visual IndicatorsGreen and Red LED

Complementary #

Product Unified CodeNORVI EC-M11-EG-C3-B95
Product Part Numbers NORVI EC-M11-EG-C3-B95

Mechanical Properties #

EnclosureWP8-10-4G
Mounting / Installation MethodWall mount Electrical Pole mount – accessory required
Terminal Type8 Position Molding Cable / AWG24 / Length 2 meters
Terminal ArrangementColor-Coded Tinned Wires
Depth35 mm
Height100 mm
Width75 mm

Environment #

IP degree of protection IP20
Operating altitude 0 – 2000 meters
Operating Temperature – –10 … +85° C
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)  400mA
Recommended Power Source  1W 24V DC

Processing #

SOC / MCUESP32-WROOM32
Flash Memory4MB
ROM448 KB
SRAM520 KB
PSRAMNOT AVAILABLE

INPUTS and OUTPUTS #

Load Cell Input #

Number of Load Cell Inputs1
Module TypeHX711
PD SCKGPIO32
DOUTGPIO33

8 Pin Connector and wire harness #

Pin Description #

8P MaleWire colourI/O Configuration
1WhiteA+
2BrownA-
3GreenB+
4YellowB-
5GrayRS-485A
6PinkRS-485B
7BluePower+
8RedPower-

Communication Channels #

RS-485 Communication #

Communication ModeHALF-DUPLEX
TransceiverMAX485
Unit Load1/4
Flow Control / Direction Control PinGPIO13
TX PinGPIO2
RX PinGPIO4

NB-IoT Module  #

ModemNB-101
RXGPIO25
TX  GPIO26
POWERGPIO22
RESETGPIO17

GPIO Map #

GPIODescriptionUsage
0outputs PWM signal at bootNRST
1USB to UARTTX0
2RS-485TX1
3USB to UARTRX0
4RS-485RX3
5outputs PWM signal at boot
12boot fails if pulled high
13RS-485Flow Control
14outputs PWM signal at boot
15outputs PWM signal at boot
16
17  NB-IoT  RESET
22  NB-IoT  POWER
23
25  NB-IoTRX
26  NB-IoTTX
32Load Cell InputPD SCK
33Load Cell Input DOUT
35
36