Siemens Building Technologies O3341(RWD32) V14c2.doc is a document about the installation and commissioning guide for this universal controller used for HVAC system comfort control. The controller can provide two digital output signals for 2-stage on/off control or as an independent three-position controller. The main analog input signal can be set to C0, F0, % or no specific unit. The second analog input signal can be used for PI limit function, remote parameter setting function, setpoint compensation, summer/winter mode conversion, cascade control function, refrigeration/dehumidification priority control, etc. The controller can be installed on a standard DIN rail inside a switch box or mounted in a protective enclosure with screws. Specific application numbers and menu display descriptions can be found in the document.
The Siemens RWD32/RWD82 controller is a general‑purpose unit for HVAC comfort control. It provides two digital outputs for two‑stage on/off control, a primary analog input that can be set to °C, °F, % or unit‑less, and a secondary analog input for functions such as PI limiting, remote set‑point, seasonal mode switching, cascade control, and heating/cooling priority.
The guide covers parameter configuration, menu navigation, wiring diagrams, physical dimensions, and four installation methods (DIN rail, wall‑mount, front‑panel, and enclosure). It also details power requirements, grounding, and EMC considerations for safe and reliable operation. This manual is written in Chinese.
| Power supply (RWD32) | AC 230 V |
|---|---|
| Digital outputs | 2 digital output signals |
| Analog input range (X1) | Ni 1000 Ω: -50…150 °C, Pt 1000 Ω: -20…180 °C, 0‑10 Vdc |
| Physical dimensions (RWD32) | Length 256.5 mm, Width 47.9 mm |
The RWD32 controller requires an AC 230 V power supply.
The controller provides two digital output signals for two‑stage on/off control.