Danfoss MCX08M2 Electronic Controller Installation Guide

: June 1, 2024
: Danfoss

Table of Contents

Danfoss MCX08M2 Electronic Controller
General Features
General features and warnings
Installation warnings
Technical specifications
Connection diagram
Dimensions
CONTACT
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Download This Manual (PDF format)

Danfoss MCX08M2 Electronic Controller

General Features

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 serial communication interface.
MCX08M2 with TTL version is moreover available in the version with display and power supply 110 – 230 V AC.

	MCX08M2 with TTL

General features and warnings

Plastic housing features

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

Other features

Operating conditions CE: -20T60 / UL: 0T55, 90% RH non-condensing
Storage conditions: -30T80, 90% RH non-condensing
To be integrated in Class I and/or II appliances
Index of protection: IP40 only on the front cover
Period of electric stress across insulating parts: long
Suitable for use in environments with the degree of pollution 2
Category of resistance to heat and fire: D
Immunity against voltage surges: Category II
Software class and structure: class A

Compliance

This product is designed to comply with the following EU standards:
Low voltage directive LVD 2014/35/EU:
- EN60730-1: 2011 (Automatic electrical control for household and similar use. General requirements)
- EN60730-2-9: 2010 (Particular Requirements for Temperature Sensing Controls)
Electromagnetic compatibility EMC directive 2014/30/EU:
- EN 61000-6-3: 2007 +A1: 2011 (Emission standard for residential, commercial and light-industrial environments)
- EN 61000-6-2: 2005 (Immunity for industrial environments)
RoHS directive 2011/65/EU and 2015/863/EU:
- EN50581: 2012

UL approval:

UL file E31024

General warnings

Every use that is not described in this manual is considered incorrect and is not authorised by the manufacturer
Verify that the installation and operating conditions of the device respect the ones specified in the manual, especially concerning the supply voltage and environmental conditions
This device contains live electrical components therefore all the service and maintenance operations must be performed by qualified personnel
The device can’t be used as a safety device
Liability for injury or damage caused by the incorrect use of the device lies solely with the user

Installation warnings

Mounting position recommended: Vertical
The installation must be executed according to the local standards and legislation of the country.
Always operate on the electrical connections with the device disconnected from the main power supply
Before carrying out any maintenance operations on the device, disconnect all the electrical connections
For safety reasons, the appliance must be fitted inside an electrical panel with no live parts accessible
Don’t expose the device to continuous water sprays or relative humidity greater than 90%.
Avoid exposure to corrosive or pollutant gases, natural elements, environments where explosives or mixes of flammable gases are present, dust, strong vibrations or chock, large and rapid fluctuations in ambient temperature that in combination with high humidity can condensate, strong magnetic and/or radio interference (e.g. transmitting antennae)
When connecting loads beware of the maximum current for each relay and connector
Use cable ends suitable for the corresponding connectors. After tightening the screws of connectors, slightly tug the cables to check their tightness
Use appropriate data communication cables. Refer to the Fieldbus Installation Guide for the kind of cable to be used and setup recommendations
Reduce the path of the probe and digital input cables as much as possible, and avoid spiral paths enclosing power devices. Separate from inductive loads and power cables to avoid possible electromagnetic noises
Avoid touching or nearly touching the electronic components fitted on the board to avoid electrostatic discharges

DISCLAIMER: Professional Use Only

This product is not subject to the UK PSTI regulation, as it is for supply to and use only by professionals with the necessary expertise and qualifications. Any misuse or improper handling may result in unintended consequences.
By purchasing or using this product, you acknowledge and accept the professional-use-only nature of its application.
Danfoss does not assume any liability for damages, injuries, or adverse consequences (“damage”) resulting from the incorrect or improper use of the product and you agree to indemnify
Danfoss for any such damage resulting from your incorrect or improper use of the product.

Disposal instruction

Equipment containing electrical components may not be disposed of together with domestic waste. It must be separately collected with electrical and electronic waste according to local and valid legislation.

Technical specifications

Power supply

85 – 265 V AC, 50/60 Hz. Maximum power consumption: 20 VA. Insulation between the power supply and the extra-low voltage: reinforced
20 – 60 V DC e 24 V AC ± 15% 50/60 Hz SELV. Maximum power consumption: 10 W, 17 VA. Insulation between power supply and the extra-low voltage: Functional

I/O	TYPE	NUM	SPECIFICATIONS
Analog inputs	NTC 0 / 1V 0 / 10V 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 1M O

• NTC (10 kO 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 1M O

• 0/20 mA, 4/20 mA

• NTC (10 kO at 25 °C)

• Pt1000

12 V+ power supply 12 V DC, 120 mA max for 4/20 mA transmitter (total on all outputs)

5 V+ power supply 5 V DC, 100 mA max for 0/5 V transmitter (total on all

outputs)

Digital input| Voltage free contact| 8| DI1, DI2, DI3, DI4, DI5, DI6, DI7, DI8

Current consumption: 10 mA

Analog outputs| 0 / 10 V DC options| 2| AO3, AO4

• Analog outputs optoisolated 0/10 V DC minimum load 1K O (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 1K O (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 position (PPM) with range 20 Hz to 1 KHz: open circuit voltage: 6.8 V

Digital output| Relay| 8| Insulation between relay: Functional

Insulation between relays and the extra-low voltage parts: reinforced Total current load limit: 32 A

C1-NO1, C2-NO2

High inrush current (80 A – 20 ms) normally open contact relays 16 A Characteristics of each relay:

• 10 A 250 V AC for resistive loads – 100.000 cycles

• 3.5 A 230 V AC for inductive loads – 230.000 cycles with cos(phi) = 0.5

C5-NO5, C6-NO6

Normally open contact relays 8 A Characteristics of each relay:

• 6 A 250 V AC for resistive loads – 100.000 cycles

• 4 A 250 V AC for inductive loads – 100.000 cycles with cos(phi) = 0.6

C3-NO3-NC3, C4-NO4-NC4, C7-NO7-NC7, C8-NO8-NC8

Changeover contacts relay 8 A Characteristics of each relay:

• 6 A 250 V AC for resistive loads – 100.000 cycles

• 4 A 250 V AC for inductive loads – 100.000 cycles with cos(phi) = 0.6

Connection diagram

TOP BOARD

$Danfoss-MCX08M2-Electronic-Controller-FIG-1 $1$$

BOTTOM BOARD

$Danfoss-MCX08M2-Electronic-Controller-FIG-1 $2$$

Connection

Connectors	Type	Dimensions

Top Board
Analog output 1-4 connector| 7-way screw plug-in connector type| • pitch 5 mm

• section cable 0.2 – 2.5 mm²

Analog input 1-4 connector| 11-way screw plug-in connector type| • pitch 5 mm

• section cable 0.2 – 2.5 mm²

Digital input 1-8 connector| 10-way screw plug-in connector type| • pitch 5 mm

• section cable 0.2 – 2.5 mm²

Analog input 5-8 connector| 5-way screw plug-in connector type| • pitch 5 mm

• section cable 0.2 – 2.5 mm²

TTL connector (only for 080G0335)| 5-way spring plug-in connector type| • pitch 2.5 mm

• section cable 0.2 – 2.5 mm²

Bottom Board
Power supply connector| 2-way screw plug-in connector type| • pitch 5 mm

• section cable 0.2 – 2.5 mm²

CAN connector| 4-way screw plug-in connector type| • pitch 5 mm

• section cable 0.2 – 2.5 mm²

CAN-RJ connector| 6/6 way telephone RJ12 plug type|
RS485 connector| 3-way screw plug-in connector type| • pitch 5 mm

• section cable 0.2 – 2.5 mm²

Digital output 1-2 connector| 4-way screw plug-in connector type| • pitch 5 mm

• section cable 0.2 – 2.5 mm²

Digital output 3-4 connector| 6-way screw plug-in connector type| • pitch 5 mm

• section cable 0.2 – 2.5 mm²

Digital output 5-6 connector| 4-way screw plug-in connector type| • pitch 5 mm

• section cable 0.2 – 2.5 mm²

Digital output 7-8 connector| 6-way screw plug-in connector type| • pitch 5 mm

• section cable 0.2 – 2.5 mm²

Dimensions

$Danfoss-MCX08M2-Electronic-Controller-FIG-1 $3$$

Product part numbers

Description	Code No.
MCX08M2, 230 V, LCD, RS485, TTL, Single Pack	080G0335

**Accessories part numbers**

Description	Code No.
MCX08M CONNECTORS KIT	080G0180

CONTACT

Via San Giuseppe 38/G
31015 Conegliano
(TV) Italy
Tel: +39 0438 336611
Fax: +39 0438 336699
info.mcx@danfoss.com.
www.danfoss.com.
Danfoss A/S
Climate Solutions
danfoss.com.
+45 7488 2222

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