Danfoss
MCX08M
MCX Series • HVAC Controller
Quick Info
Type
HVAC
Application
Building Automation
Probe Inputs
8
Relay Outputs
0
Communication
RS485 Modbus
Panel Size
DIN rail 4 modules mm
Analog measurement expansion module for MCX system
Technical Specifications
Display & Interface
| Display Type | LED |
| Display Digits | 0 |
| Buttons | 0 |
| LED Indicators | Power, AI1-8, Comm |
Power Supply
| Voltage | 24V AC/DC |
| Voltage Range | 20-28V AC/DC |
| Frequency | 50/60Hz |
| Power Consumption | 3VA |
Sensor Inputs
| Probe Inputs | 8 |
| Probe Type | NTC/PT1000/0-10V/4-20mA |
| Temp Range | -60 to 150°C |
| Accuracy | ±0.2°C |
Relay Outputs
| Relay Outputs | 0 |
| Relay Rating | - |
Physical
| Panel Size | DIN rail 4 modules mm |
| Depth | 60 mm |
| IP Rating | IP20 |
| Weight | 150 g |
Operating Conditions
| Operating Temp | -20 to 60°C |
| Storage Temp | -40 to 80°C |
Wiring Terminals
| Terminal | Function | Type | Wire Color |
|---|---|---|---|
| +24V | Power +24V | Input |
red
|
| 0V | Power 0V | Input |
blue
|
| AI1-AI8 | Analog Inputs | Input |
various
|
| COM | Input Common | Input |
black
|
| A | RS485 A | Comm |
blue
|
| B | RS485 B | Comm |
yellow
|
Important: Always disconnect power before wiring. Verify terminal numbers with the actual controller label before connecting.
Parameter Settings
| Code | Parameter | Range | Default | Description |
|---|---|---|---|---|
| o01 | Modbus Address | 1 to 247 | 1 | Network address |
| o02 | Baud Rate | 0=9600, 1=19200, 2=38400 | 1 | Communication speed |
| i01 | AI1 Type | 0=NTC, 1=PT1000, 2=0-10V, 3=4-20mA | 0 | Input 1 type |
| i02 | AI2 Type | 0=NTC, 1=PT1000, 2=0-10V, 3=4-20mA | 0 | Input 2 type |
| c01 | AI1 Offset | -10 to 10 | 0 | Input 1 calibration |
| s01 | AI1 Scale Low | -100 to 100 | 0 | 0V/4mA value |
| s02 | AI1 Scale High | -100 to 500 | 100 | 10V/20mA value |
Error Codes
E1
AI1 sensor fault
Solution: Check input 1 wiring
E2
AI2 sensor fault
Solution: Check input 2 wiring
E7
Communication error
Solution: Check RS485 bus wiring
Frequently Asked Questions
Set ixx=3 for 4-20mA, configure scale with s01/s02
Default is NTC 10K ohm at 25°C
Alternative Models (Cross Reference)
Carel pCOe
Siemens POL638
Manufacturer Information
Brand: Danfoss
Country: Denmark