Danfoss MCX08M2 Data sheet

Data Sheet

Programmable controller, 8 relays
Type MCX08M2

Electronic controller suitable for all HVAC/R software application needs.

MCX08M2 is an electronic controller that holds
all the typical functionalities of MCX controllers
in the compact size of 8 DIN modules:

• Programmability

• Connection to the CANbus local network

• Modbus RS485 opto-insulated serial interface

It is available in the version with or without
graphic LCD display, and 110 / 230 V AC or 24 V
AC power supply.

Features:

• 8 analog and 8 digital inputs

• 4 analog and 8 digital outputs

• Power supply 24 V AC / 20 / 60 V DC and 110
V / 230 V AC

• Remote access to data through CANbus
connection for additional display (LCD
available) and keyboard

• RTC clock for managing weekly time
programs and data logging information

• Modbus RS485 opto-insulated serial interface

• Dimensions 8 DIN modules

• Available with graphic LCD display and
without display for showing the desired
information

AI217686427688en-000901

MCX family

MCX06C

MCX06D

MCX061V

MCX08M2

MCX152V

MCX15B2

MCX20B2

Product image

Power supply

24 V

24 V

24 V or

110/230 V

24 V or

110/230 V

24 V or

110/230 V

24/110/230 V

24/110/230 V

Built-in display (optional)

LED

LCD

LCD

LCD

LCD

LCD

LCD

Analog Inputs44781410

16

Digital Inputs68881822

22

Analog Outputs

2334666

Digital Outputs66681515

20

EXV driver embedded

1

2

RS485111121

2

CANbus••••••

•

Ethernet / Web server

optional

optional••

USB/Memory Card

•••

•

Dimensions
(1 DIN module = 17,5
mm)

33 x 75 mm

4 DIN

8 DIN

8 DIN

16 DIN

16 DIN

16 DIN

Programmable controller, 8 relays, type MCX08M2

Portfolio overview

Table 1: Portfolio overview

© Danfoss | Climate Solutions | 2021.03 AI217686427688en-000901 | 2

Features

Description

Power supply

85 – 265 V AC, 50/60 Hz. Maximum power consumption: 20 V A
Insulation between power supply and the extra-low voltage: reinforced

20 – 60 V DC and 24 V AC ± 15% 50/60 Hz SELV
Maximum power consumption: 10 W, 17 V A
Insulation between power supply and the extra-low voltage: functional

Plastic housing

DIN rail mounting complying with EN 60715

Self extinguishing V0 according to IEC 60695-11-10 and glowing / hot wire test at 960 °C according to IEC 60695-2-12

Ball test

125 °C according to IEC 60730-1
Leakage current: ≥ 250 V according to IEC 60112

Operating conditions

CE: -20T60 / UL: 0T55, 90% RH non-condensing

Storage conditions

-30T80, 90% RH non-condensing

Integration

In Class I and / or II appliances

Index of protection

IP40 only on the front cover

Period of electric stress across insulat­ing parts

Long
Resistance to heat and re

Category D

Immunity against voltage surges

Category II

Software class and structure

Class A

Type

Num

Specications

NTC
0 / 1 V
0 / 10 V
PT1000

4

AI5, AI6, AI7, AI8

Analog inputs selectable via software between:

• 0 / 1 V, 0 / 5 V, 0 / 10 V : impedance is greater than 1 MΩ

• NTC (10 kΩ at 25 °C)

• Pt1000

Universal

4

AI1, AI2, AI3, AI4

Universal analog inputs selectable via software between:

• ON/OFF (current: 20 mA)

• 0 / 1 V, 0 / 5 V, 0 / 10 V : impedance is greater than 1 MΩ

• 0 / 20 mA, 4 / 20 mA

• NTC (10 kΩ at 25 °C)

• Pt1000
12 V+ power supply 12 V DC, 50 mA max for 4 / 20 mA transmitter (total on all outputs)
5 V+ power supply 5 V DC, 80 mA max for 0 / 5 V transmitter (total on all outputs)

Type

Num

Specications

Voltage free con­tacts

8

DI1, DI2, DI3, DI4, DI5, DI6, DI7, DI8

Current consumption: 5 mA

Type

Num

Specications

0 / 10 V DC optoins

2

AO3, AO4

Analog outputs optoinsulated 0 / 10 V DC minimum load 1 kΩ (10 mA) for each output

PWM
PPM
0 / 10 V DC

2

AO1, AO2

Analog outputs selectable via software between:

• 0 / 10 V DC minimum load 1 kΩ (10 mA) for each output

• pulsing output, synchronous with the line, at modulation of impulse position (PPM) or modulation of impulse width (PWM)

• pulsing output, at modulation of impulse width (PWM) with range 20 Hz to 1 KHz: open circuit voltage: 6.8 V

Programmable controller, 8 relays, type MCX08M2

Product specication

General features

Table 2: General features

Input/Output

Table 3: Analog inputs

Table 4: Digital inputs

Table 5: Analog outputs

© Danfoss | Climate Solutions | 2021.03 AI217686427688en-000901 | 3