RMG 8 T KNX - Electrical automation THEBEN - Free user manual and instructions
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| Product Type | KNX room temperature controller (8 channels) |
| Dimensions (H x W x D) | 90 mm x 72 mm x 64 mm |
| Weight | Approx. 150 g |
| Power Supply | KNX bus voltage (21-32 V DC), ≤10 mA |
| Power Consumption | < 0.5 W |
| Number of Channels | 8 |
| Supported Actuators | Valves, fan coil units, electric heating |
| Control Mode | PI (proportional-integral) control, continuous or switching |
| Operating Modes | Comfort, Standby, Night, Frost/Heat protection |
| Setpoint Range | +5 °C to +40 °C |
| Interface | KNX bus (TP1) |
| Programming | Via ETS software (ETS5 or higher) |
| Display | None (configured via ETS or remote control) |
| Protection Class | IP20 |
| Ambient Temperature | 0 °C to +45 °C |
| Storage Temperature | -25 °C to +70 °C |
| Mounting | DIN rail (35 mm) or surface mounting |
| Maintenance | No regular maintenance required; keep clean and dry |
| Safety | Complies with EN 50090 and KNX standards; SELV |
| Spare Parts / Repairability | Not user-serviceable; contact Theben support for defects |
| Certifications | CE, KNX certified |
Frequently Asked Questions - RMG 8 T KNX THEBEN
How do I connect the RMG 8 T KNX to the KNX bus?
Connect the device to the KNX bus using the provided bus terminal (red/black). Ensure the bus voltage is between 21-32 V DC. The device will be automatically detected by the ETS software when programming.
Can I control heating and cooling with the same device?
Yes, the RMG 8 T KNX supports both heating (e.g., valves, electric heating) and cooling (e.g., fan coil units) outputs. Switching between modes can be configured via ETS.
What is the maximum cable length for temperature sensors?
The device uses internal or external temperature sensors (e.g., NTC). For external sensors, the maximum cable length is typically 50 m with a cross-section of 0.5 mm² or more. Refer to the manual for exact specifications.
How many channels can be controlled?
The RMG 8 T KNX has 8 independent output channels. Each channel can be configured as a switching or continuous output (0-10 V or PWM).
Do I need a separate power supply for the device?
No, the device is powered directly from the KNX bus. Ensure the bus power supply can handle the total current of all devices (the RMG 8 T consumes ≤10 mA).
Can I use the RMG 8 T KNX in a multi-room system?
Yes, multiple RMG 8 T units can be connected to the same KNX bus. Each unit can control up to 8 zones, and they can communicate with each other for centralized control via ETS.
How do I set the operating mode (Comfort, Standby, etc.)?
Operating modes can be set via group objects in ETS. You can assign a group address to switch between modes, or use a central mode controller. The device supports Comfort, Standby, Night, and Frost/Heat protection modes.
What should I do if the device does not respond?
Check the bus connection and ensure the bus voltage is present. Use the ETS software to verify the device is programmed correctly. If the LED (if present) is off, the device may be faulty. Reset by disconnecting the bus for 10 seconds.
Can I update the firmware?
Firmware updates are possible via the KNX bus using ETS 6 with the appropriate application program. Download the latest firmware from the Theben website and follow the update procedure in the manual.
How do I clean the device?
Clean the exterior with a dry, soft cloth. Do not use any liquids or solvents. Ensure the device is disconnected from the bus before cleaning. Avoid dust accumulation on the terminals.
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USER MANUAL RMG 8 T KNX THEBEN
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Product information
Brand : THEBEN
Model : RMG 8 T KNX
Category : Electrical automation