Siemens
POL424.50/STD
Climatix 400 Series • HVAC Controller
Quick Info
Type
HVAC
Application
HVAC Control
Probe Inputs
4
Relay Outputs
4
Communication
Modbus RTU
Panel Size
- mm
Entry-level programmable controller for heating and cooling
Technical Specifications
Display & Interface
| Display Type | LCD (optional room unit) |
| Display Digits | - |
| Buttons | 0 |
Power Supply
| Voltage | 24V AC |
| Voltage Range | 20-30V AC |
| Frequency | 50/60Hz |
| Power Consumption | 8VA |
Sensor Inputs
| Probe Inputs | 4 |
| Probe Type | Universal |
| Temp Range | -°C |
Relay Outputs
| Relay Outputs | 4 |
| Relay Rating | 2A/24VAC |
Physical
| Panel Size | - mm |
| Depth | - mm |
| IP Rating | IP20 |
Operating Conditions
| Operating Temp | 0 to 50°C |
Wiring Terminals
| Terminal | Function | Type | Wire Color |
|---|---|---|---|
| 24V AC Power | Power |
power
|
|
| Universal Inputs | Input |
sensor
|
|
| Digital Inputs | Input |
digital
|
|
| Analog Outputs | Output |
analog
|
|
| Relay Outputs | Output |
relay
|
|
| Modbus | Communication |
comm
|
Important: Always disconnect power before wiring. Verify terminal numbers with the actual controller label before connecting.
Parameter Settings
| Code | Parameter | Range | Default | Description |
|---|---|---|---|---|
| SP | Temperature Set Point | 5~35 | 21 °C | |
| MODE | Operating Mode | Heat/Cool/Auto | Auto | |
| FAN | Fan Control | Auto/On | Auto |
Error Codes
E1