This document describes the features and characteristics of the RWD68 Universal Controller produced by Siemens Building Technologies. The controller is designed for comfort control in HVAC and refrigeration systems. It features independent electronic control with options to select application programs using application numbers. The input value range and output range can be adjusted, and it supports various temperature sensors and 0-10V signals. The controller has a digital input for day/night setpoint switching and can be easily configured and updated using the onboard buttons or computer software.
The RWD68 universal controller is designed for HVAC and refrigeration comfort control. It supports independent electronic P and PI responses, AC 24 V power, and selectable input ranges for temperature sensors and 0‑10 V signals. Settings can be changed via front‑panel keys or a Windows‑based software tool.
The device can be installed on a DIN rail, wall‑mounted in a protective enclosure (ARG62.21/ARG62.22), or front‑mounted with screws. Technical data include a working voltage of AC 24 V, temperature range –25 °C to +70 °C, IP20 enclosure rating, and a weight of 0.2875 kg. This manual is written in Chinese.
| Temperature measurement range (environment) | -25 °C to +70 °C |
|---|---|
| Temperature measurement range (operating) | -20 °C to +180 °C |
| Humidity limit | ≤95 % RH |
| IP rating (standard enclosure) | IP20 |
| IP rating (optional panel) | IP30 |
| Weight | 0.2875 kg |