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
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
MCX family |
MCX06C |
MCX06D |
MCX061V |
MCX08M2 |
MCX152V |
MCX15B2 |
MCX20B2 |
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Product image |
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Power supply |
24 V |
24 V |
24 V or |
24 V or |
24 V or |
24/110/230 V |
24/110/230 V |
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110/230 V |
110/230 V |
110/230 V |
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Built-in display (optional) |
LED |
LCD |
LCD |
LCD |
LCD |
LCD |
LCD |
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Analog Inputs |
4 |
4 |
7 |
8 |
14 |
10 |
16 |
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Digital Inputs |
6 |
8 |
8 |
8 |
18 |
22 |
22 |
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Analog Outputs |
2 |
3 |
3 |
4 |
6 |
6 |
6 |
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Digital Outputs |
6 |
6 |
6 |
8 |
15 |
15 |
20 |
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EXV driver embedded |
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1 |
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2 |
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RS485 |
1 |
1 |
1 |
1 |
2 |
1 |
2 |
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CANbus |
• |
• |
• |
• |
• |
• |
• |
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Ethernet / Web server |
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optional |
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optional |
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• |
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USB/Memory Card |
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Dimensions |
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(1 DIN module = 17,5 |
33 x 75 mm |
4 DIN |
8 DIN |
8 DIN |
16 DIN |
16 DIN |
16 DIN |
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mm) |
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© Danfoss | Climate Solutions | 2021.03 |
AI320818679084en-000401 | 2 |
Programmable controller, 15 and 20 relays, type MCX15B2 and MCX20B2
Product speci€cation
General features
Table 2: General features
Features |
Description |
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Power supply |
21 – 265 V AC, 50/60 Hz |
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40 – 230 V DC |
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Maximum power consumption: 15 W |
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Isolation between power supply and the extra-low voltage: reinforced |
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Plastic housing |
DIN rail mounting complying with EN 60715 |
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Self-extinguishing V0 according to IEC 60695-11-10 and glowing / hot wire test at 960 °C according to IEC 60695-2-12 |
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Ball test |
125 °C according to IEC 60730-1 |
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Leakage current: ≥ 250 V according to IEC 60112 |
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Operating conditions |
CE: -20T60 / UL: 0T50, 90% RH non-condensing |
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Storage conditions |
-30T80, 90% RH non-condensing |
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Integration |
In Class I and / or II appliances |
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Index of protection |
IP40 only on the front cover |
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Period of electric stress across insulat- |
Long |
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ing parts |
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Resistance to heat and •re |
Category D |
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Immunity against voltage surges |
Category II |
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Category III for versions without display |
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Software class and structure |
Class A |
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Input/Output
Table 3: Analog inputs
Type |
Num |
Speci€cations |
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Total number: 16 on MCX20B2; 10 on MCX15B2 |
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Analog Input type selectable via software. |
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Max 13.5 V input voltage. |
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Do not connect voltage sources without current limitation (overall 80 mA) to analog inputs while unit is not |
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powered. |
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Open circuit HW diagnostics available for all analog inputs. |
NTC |
16 (MCX20B2) |
AI1 to AI16 on MCX20B2 |
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0 |
/ 1 V |
10 (MCX15B2) |
AI1 to AI10 on MCX15B2 |
0 |
/ 5 V |
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NTC, default 10 kΩ at 25 °C, Beta 3435 |
0 |
/ 10 V |
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0/xV type: impedance is greater than 1 MΩ |
PT1000 |
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ON/OFF |
10 (MCX20B2) |
AI1 to AI6, AI11 to AI14 on MCX20B2 |
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0 |
/ 20 mA |
6 (MCX15B2) |
AI1 to AI6 on MCX15B2 |
4 |
/ 20 mA |
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100 Ω as measuring resistance for current measurements. |
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The inputs can be used to sense voltage free contacts with contact cleaning current 10 mA. |
Auxiliary Supplies |
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15 V+ and 5 V+ |
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5 V+ max: 200 mA (total on all outputs) |
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15 V+ max: 200 mA (total on all outputs) |
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All power outputs are protected against short circuit and have an automatic recovery from overload |
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condition. |
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© Danfoss | Climate Solutions | 2021.03 |
AI320818679084en-000401 | 3 |
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