RWD62U
Technical Instructions
Document No. 155-737
January 14, 2005
Universal Controller
Description
The Universal controller is intended for heating, air conditioning, ventilation and
refrigeration in comfort control applications. RWD62U main loop control applications
are designed for temperature, static pressure, humidity, air pressure, fluid pressure,
refrigeration, air quality and air fluid velocity control. The controller contains pre-
programmed applications.
Auxiliary control functions include:
• Day/night setpoints
• Remote setpoint control
• Limiter control
• Cascade control
• Maximum priority
• Setpoint compensation
• Summer/winter operation
Control parameters are adjusted for maximum comfort control via three buttons on the
face of the device, or with a laptop computer and Siemens Building Technologies
program software.
NOTE: For complete supporting technical documentation, including training
presentations, see www.us.sbt.siemens.com/hvp/components.
Features
• Stand-alone electronic temperature controller with P or P+I response
• 24 Vac operating voltage
• Control application selectable via Application Number
• Active input scale can be selectable
• Limit and direction of the output scale can be freely assigned
• Two universal inputs for Siemens 1000 ohm nickel (Ni 1000), 1000 ohm platinum
(Pt 1000) temperature sensors and 0 Vdc to 10 Vdc signals
• Unit can be set as °F, °C, % or no specified unit
• Two modulating 0 to 10 Vdc signal outputs, direct or reverse action
• One digital input for day/night changeover
• Entering or changing of all data via operating buttons on the controller, possible
without additional tools
• Computer connection for downloading canned applications via the software tool
Product Number
RWD62U
Siemens Building Technologies, Inc.
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