Danfoss MCX15B2, MCX20B2 Data sheet

Data Sheet

Programmable controller, 15 and 20 relays Type MCX15B2 and MCX20B2

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

MCX15B2 and MCX20B2 is an electronic controller that stands on the top of the MCX range, thanks to the large number of its inputs and outputs, the enhanced CPU capabilities and connectivity features.

It holds all the typical functionalities of MCX controllers:

• programmability

• connection to the CANbus local network

• up to two Modbus RS485 serial interfaces with galvanic isolation

Furthermore, it is tted with an ultra wide range (24/110/230 V AC) power supply in the same product variant, with USB and Ethernet connection for embedded Web server and IP protocols management. It is available in several models, with or without graphic LCD display and with 15 or 20 digital output.

AI320818679084en-000401

MCX family

MCX06C

MCX06D

MCX061V

MCX08M2

MCX152V

MCX15B2

MCX20B2

Product image

Power supply

24 V

24 V or

110/230 V

24 V or

110/230 V

24 V or

110/230 V

24/110/230 V

Built-in display (optional)

LED

LCD

Analog Inputs44781410

Digital Inputs68881822

Analog Outputs

2334666

Digital Outputs66681515

EXV driver embedded

RS485111121

CANbus••••••

•

Ethernet / Web server

optional

optional••

USB/Memory Card

•••

•

Dimensions (1 DIN module = 17,5 mm)

33 x 75 mm

4 DIN

8 DIN

16 DIN

Programmable controller, 15 and 20 relays, type MCX15B2 and MCX20B2

Features

• MCX20B2

⁃ 16 analog and 22 digital inputs ⁃ 6 analog and 20 digital outputs

• MCX15B2

⁃ 10 analog and 22 digital inputs ⁃ 6 analog and 15 digital outputs

• Ultra wide range power supply from 24 – 230 V AC

• USB connector for easy software upload and datalogging

• Ethernet with Web server feature and several IP protocols

• Remote access to data through CANbus connection for additional display and keyboard

• RTC clock for managing weekly time programs and data logging information with supercapacitor as temporary backup power

• Up to two Modbus RS485 opto-isolated serial interface

• Available with and without graphic LCD display

• Dimensions 16 DIN modules

Portfolio overview

Table 1: Portfolio overview

Features

Description

Power supply

21 – 265 V AC, 50/60 Hz 40 – 230 V DC

Maximum power consumption: 15 W

Isolation between power supply and the extra-low voltage: reinforced

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: 0T50, 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 Category III for versions without display

Software class and structure

Class A

Type

Num

Specications

Total number: 16 on MCX20B2; 10 on MCX15B2

Analog Input type selectable via software. Max 13.5 V input voltage. Do not connect voltage sources without current limitation (overall 80 mA) to analog inputs while unit is not powered. Open circuit HW diagnostics available for all analog inputs.

NTC 0 / 1 V 0 / 5 V 0 / 10 V PT1000

16 (MCX20B2) 10 (MCX15B2)

AI1 to AI16 on MCX20B2 AI1 to AI10 on MCX15B2

NTC, default 10 kΩ at 25 °C, Beta 3435 0/xV type: impedance is greater than 1 MΩ

ON/OFF 0 / 20 mA 4 / 20 mA

10 (MCX20B2)

6 (MCX15B2)

AI1 to AI6, AI11 to AI14 on MCX20B2 AI1 to AI6 on MCX15B2

100 Ω as measuring resistance for current measurements. The inputs can be used to sense voltage free contacts with contact cleaning current 10 mA.

Auxiliary Supplies

15 V+ and 5 V+ 5 V+ max: 200 mA (total on all outputs) 15 V+ max: 200 mA (total on all outputs) All power outputs are protected against short circuit and have an automatic recovery from overload condition.

Programmable controller, 15 and 20 relays, type MCX15B2 and MCX20B2

Product specication

General features

Table 2: General features

Input/Output

Table 3: Analog inputs

Type

Num

Specications

Total number: 22

Digital Input type selectable via software between 24 V AC or voltage free

Voltage free contacts or 24 V AC

DI5 to DI22

As the inputs are not isolated, caution has to be used when applying 24 V AC: the same polarity of the supply MUST always be used on COM/GND connection. Counting function with max frequency of 16.6 Hz (30 ms minimum pulse time).

24 V opto-insulated

DI1, DI2, DI3, DI4

Inputs opto isolated, 24 V AC 50/60 Hz or 24 V DC Rated current: 5 mA @24 V AC

230 V opto-insulated

DIH1, DIH2, DIH3, DIH4

Inputs opto isolated, 86 – 265 V AC / 50/60 Hz Reinforced isolation Rated current: 2,5 mA @ 265 V AC



NOTE:

When the 230 V AC DH1 input is used, the corresponding 24 V DI1 input is not available anymore; the same for the couple of inputs DIH2 and DI2, DIH3 and DI3, DIH4 and DI4.

Type

Num

Specications

Total number: 6

0 / 10 V

AO1, AO2, AO3, AO4, AO5, AO6

Analog Outputs 0/10 V, galvanically isolated, minimum load 1K Ω (10 mA) for each output.

PWM-PPM

AO5, AO6 Asynchronous PWM

Voltage output: max VLO= 0.6 V, min VHI= 6.5 V Frequency range 15 Hz…1 kHz

Synchronous PWM and PPM

Voltage output: max VLO= 0.6 V, min VHI= 6.5 V Frequency: Mains frequency x2

I/O

Type

Num

Specications

Digital output

Relay

20 (MCX20B2) 15 (MCX15B2)

Concerning the insulation distance there are three groups of relays:

• group 1: relays 1 to 8

• group 2: relays 9 to 13

• group 3: relays 14 to 20 Insulation between relays of the same group: functional Insulation between relays of dierent groups: reinforced Insulation between relays and the extra-low voltage parts: reinforced Total current load limit: 65 A

C1-NO1 to C13-NO13, C16-NO16 to C20-NO20 on MCX20B2 C1-NO1 to C13-NO13 on MCX15B2

Normally open contact relays 5 A Characteristics of each relay:

•

5 A 250 V AC for resistive loads - 100,000 cycles

•

3 A 250 V AC for inductive loads - 100,000 cycles with cos(phi) = 0.4

• UL: 3 A resistive, 250 V AC, 100,000 cycles; 1/8 hp, 125/250 V AC, 30,000 cycles; C300 pilot

duty, 125/250 V AC, 30,000 cycles

C14-NO14-NC14, C15-NO15-NC15

Changeover contact relays 16 A Characteristics of each relay:

• 5 A 250 V AC for resistive loads - 100,000 cycles

• 3.5 A 250 V AC for inductive loads - 230,000 cycles with cos(phi) = 0.4

• UL: NO contact: 6 A resistive, 240 V AC, 30.000 cycles; 1/2 hp, 240 V AC, 30.000 cycles; 470

VA pilot duty, 240 V AC, 30.000 cycles. NC contact: 6 A resistive, 6.000 cycles

C3 NO3 to C6 NO6

Optionally they can be solid state relays Characteristics of each relay:

• 15 – 280 Vrms, 0.5 A

• UL: 0.5 A resistive, 240 V AC, 30,000 cycles

Programmable controller, 15 and 20 relays, type MCX15B2 and MCX20B2

Table 4: Digital inputs

Table 5: Analog outputs

Table 6: Digital outputs

Interface

Use

Connector label

Technical data

CANbus

Fieldbus for connection to user interfaces, MCX controllers, service tools etc.

CAN

CAN-RJ

Physical layer according to ISO 11898-2 High Speed CAN bus Frame format according to CAN 2.0B specication Transceiver not isolated (power supply has reinforced isolation)

USB device

Prepared for future use

USB-DEV

Plug: Type Mini B

USB host

For connection to Flash drive for application software update, datalogging and service

USB-H

Plug: Type A

RS485-1 RS485-2 (MCX20B2 only)

Communication bus to BMS (e.g. Modbus slave), service tools, smart devices (e.g. Modbus master) RS485-1 can be polarized as master from the application

RS485-1 RS485-2

Physical layer according to EIA 485 Ref3 Provide 500V peak transient galvanic isolation

Ethernet

For web server functionality, integration (e.g. Modbus TCP) NOTICE! Do not route cable outside of buildings. Connect only to IT equipment compliant with EN 60950 or EN 62368 (Information technology equipment. Safety. General requirements)

ETHERNET

Interface type: 10 BASE-T and 100 BASE-TX, IEEE 802.3. MDI-X (Automatic medium-dependent interface crossover)

Interface

Max wire length (m)

Max. baudrate (bps)

Min. wire size

Ethernet

100

10/100 M

CANbus

1000

520 250

80 30

50 K 125 K 250 K 500 K

1 M

AWG18 AWG22 AWG24 AWG26 AWG26

RS485

1000

125 K

AWG22

Signal wiring

Programmable controller, 15 and 20 relays, type MCX15B2 and MCX20B2

Communication interface

Table 7: Communication interface

Wire lengths

Table 8: Wire lengths

24 V SELV

230 V or 24 V DIGITAL INPUT

(DI1 - DI4)

24 V230 V OR

24 VVOLTAGE FREE

VOLTAGE FREE or 24 V DIGITAL INPUT

(DI5 - DI22)

e.g. DIGITAL INPUT 5

e.g. DIGITAL INPUT 1

MCX20B2 only

Programmable controller, 15 and 20 relays, type MCX15B2 and MCX20B2

Connection diagram

Top board

Figure 1: Top board

Connectors

Type

Dimensions

Digital input 1 connector

3 way screw plug-in connector type

• pitch 5 mm

• section cable 0.2 – 2.5 mm²

Digital output 14-15 connector

6 way screw plug-in connector type

• pitch 5 mm

• section cable 0.2 – 2.5 mm²

Digital output 16-20 connector (MCX20B2)

10 way screw plug-in connector type

• pitch 5 mm

• section cable 0.2 – 2.5 mm²

Analog input 11-14 connector (MCX20B2)

7 way screw plug-in connector type

• pitch 5 mm

• section cable 0.2 – 2.5 mm²

Analog input 15-16 connector (MCX20B2)

4 way screw plug-in connector type

• pitch 5 mm

• section cable 0.2 – 2.5 mm²

Digital input 2 connector

3 way screw plug-in connector type

• pitch 5 mm

• section cable 0.2 – 2.5 mm²

Digital input 3 connector

3 way screw plug-in connector type

• pitch 5 mm

• section cable 0.2 – 2.5 mm²

Digital input 4 connector

3 way screw plug-in connector type

• pitch 5 mm

• section cable 0.2 – 2.5 mm²

Digital input 5-8 connector

5 way screw plug-in connector type

• pitch 5 mm

• section cable 0.2 – 2.5 mm²

Programmable controller, 15 and 20 relays, type MCX15B2 and MCX20B2

Bottom board

Figure 2: Bottom board



NOTE:

Connection has to be made on the rst and last local network units, make the connection as close as possible to the connector.

Connection

Table 9: Top board

Connectors

Type

Dimensions

Digital input 9-13 connector

6 way screw plug-in connector type

• pitch 5 mm

• section cable 0.2 – 2.5 mm²

Digital input 14-17 connector

5 way screw plug-in connector type

• pitch 5 mm

• section cable 0.2 – 2.5 mm²

Digital input 18-22 connector

6 way screw plug-in connector type

• pitch 5 mm

• section cable 0.2 – 2.5 mm²

Connectors

Type

Dimensions

Digital output 1-5 connector

10 way screw plug-in connector type

• pitch 5 mm

• section cable 0.2 – 2.5 mm²

Digital output 6-8 connector

6 way screw plug-in connector type

• pitch 5 mm

• section cable 0.2 – 2.5 mm²

Ethernet connector

8 / 8 way RJ 45 plug type

USB host connector

USB Type A

Analog input 1-6 connector

11 way screw plug-in connector type

• pitch 5 mm

• section cable 0.2 – 2.5 mm²

Analog input 7-10 connector

6 way screw plug-in connector type

• pitch 5 mm

• section cable 0.2 – 2.5 mm²

Power supply connector

2 way screw plug-in connector type

• pitch 5 mm

• section cable 0.2 – 2.5 mm²

Digital output 9-13 connector

10 way screw plug-in connector type

• pitch 5 mm

• section cable 0.2 – 2.5 mm²

Analog output 1-6 connector

8 way screw plug-in connector type

• pitch 5 mm

• section cable 0.2 – 2.5 mm²

RS485 -2 connector

3 way screw plug-in connector type

• pitch 5 mm

• section cable 0.2 – 2.5 mm²

RS485-1 connector

3 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

USB DEV connector

USB Mini B

Programmable controller, 15 and 20 relays, type MCX15B2 and MCX20B2

Table 10: Bottom board

Dimensions

Figure 3: Dimensions

Type

Features

Description

LCD display

Display

STN blue transmissive

Backlight

White LED backlight adjustable via software

Contrast

Adjustable via software

Format

128 x 64 dots

Active visible area

58 x 29 mm

Keyboard

Number of keys

Keys function

Set by the application software

Description

Code No.

MCX15B2, RS485, S

080G0327

MCX15B2, LCD, RS485, S

080G0328

MCX20B2, 2xRS485, I (12 pieces)

080G0329

MCX20B2, LCD, 2xRS485, S

080G0330

MCX20B2, LCD, 2xRS485, I (12 pieces)

080G0331

MCX20B2, LCD, 4 SSR, 2xRS485, S

080G0332

Description

Code No.

MCX20B2 Connectors Kit

080G0404

File name

Document type

Document topic

Approval authority

080R1230.01

EU Declaration of conformity

EMC directive 2014/30/EU:

EN61000-6-3: 2007 +A1: 2011 EN61000-6-2: 2005

LVD directive 2014/35/EU:

EN60730-1: 2011 EN60730-2-9: 2010

RoHS directive 2011/65/EU and 2015/863/EU:

EN 50581: 2012

Danfoss

UL E31024

Electrical - Safety

Certicate

–

Programmable controller, 15 and 20 relays, type MCX15B2 and MCX20B2

User interface

Table 11: User interface

Ordering

Product part numbers

Table 12: Product part numbers

 NOTE:

Single pack codes (S) include standard kit connectors, industrial pack codes (I) don’t include standard kit connectors.

Accessories part numbers

Table 13: Accessories part numbers

Certicates, declarations, and approvals

The list contains all certicates, declarations, and approvals for this product type. Individual code number may have some or all of these approvals, and certain local approvals may not appear on the list.

Some approvals may change over time. You can check the most current status at danfoss.com or contact your local Danfoss representative if you have any questions.

Table 14: Certicates, declarations, and approvals

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Danfoss MCX15B2, MCX20B2 Data sheet

Specifications and Main Features

Frequently Asked Questions

User Manual