Automated Logic MEx816u I/O Expansion Module

Product Overview

The MEx series I/O extender is developed for the ME series controllers and is designed for industrial demanding control applications; It can be directly stacked on the ME controller body, locally stacked, or remotely installed.

MEx816u specification: 16 universal inputs, 8 universal outputs;

The entire system can connect up to 5 MEx expansion modules in series.

The first MEx module can be directly installed on top of the ME812u controller, saving control cabinet space.

The hardware casing is made of sturdy aluminum alloy, which is resistant to electrical interference and noise; The terminal is a pull-out screw terminal, which is convenient for wiring, debugging, replacement and maintenance.

List of MEx Full Series Models

Model universal output universal input

MEx48u 4 8

MEx88u 8 8

MEx016u 0 16

MEx816u 8 16

Communication bus Xnet

Use Xnet I/O expansion bus with a communication rate of 500 Kbps to achieve data exchange between the ME main controller and various I/O expansion modules.

Wiring: Remote installation with a maximum distance of 100 feet (approximately 30.5 meters).

Backward compatibility with older Mx I/O expanders (only available in 9-pin D-Sub interface versions).

Universal inputs (14 bit ADC)

MEx-816u has a total of 16 universal inputs, 14 bit analog-to-digital conversion, and a single channel can be configured with multiple signal types through software/hardware:

0-5V DC

0-10V DC

0-20 mA analog current

10k Ω Type-II Thermistor (Temperature Sensor)

1k Ω RTD Platinum/Nickel/Barkol Resistance Temperature Detector

Dry contact switch input

Additional features: All input channels support pulse counting, with a maximum frequency of 40Hz and a minimum pulse width of 12.5ms.

Universal outputs (12 bit DAC)

8-channel universal output, configured output mode through jumper on the board:

Mode 1: 0-10V DC analog voltage output;

Mode 2: 0-20 mA DC analog current output (12 bit DAC);

Mode 3: 24V DC, maximum 50mA relay driven output.

Each output is equipped with an HOA (Manual Off Auto) local operation switch, with a built-in potentiometer that can manually adjust the analog output value on site for easy debugging and maintenance.

Hardware and status functions

Status LED indicators: Power supply, Run running, Error fault, Xnet TX transmission, Xnet RX reception.

Rotating DIP dip switch: used to set the station address of the module on the Xnet bus.

Built in protection: The power supply, communication, and I/O are all integrated with surge and transient overvoltage protection circuits.

Certification: UL916, Canadian C22.2 No.205-M1983, CE, FCC Part 15 Class B (industrial Class A equipment).

Environmental conditions

Working temperature: -29 ° C~+60 ° C (-20 ° F~140 ° F)

Relative humidity: 10-90% RH, no condensation.

Power specifications

Choose one power supply:

Communication: 24 VAC ± 10%, 50-60Hz, power consumption of 45 VA;

DC: 26   VDC ± 10%, power consumption 21   W.

Note: If external attachments such as BACview6 are connected, the overall power consumption of the machine will increase.

Physical dimensions and weight

Shell material: Aluminum alloy, pluggable screw terminal block

Overall dimensions: Width 121mm x Height 229mm x Thickness 38mm

Installation hole size: Width 70   mm x Height 216   mm

Weight: 1.4   lb (approximately 0.64   kg, document printing pen mistakenly wrote 45.5kg)

Installation method

Direct stacking: The first module is directly fastened above the ME812u controller;

Stacking inside the cabinet: Multiple modules are stacked inside the control cabinet;

Remote installation: Xnet bus wiring, up to 100 feet away, dispersed installation.