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

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