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Thermokon · Room controller · Modbus
WRF04 RC x RS485 Modbus
Surface-mounted room controller with setpoint dial, fan switch and presence button options, 0 to 10 V outputs and an RS485 Modbus RTU link.
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Part number415613
Datasheet, PDF
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Specification
Communication
- Protocol
- Modbus RTU, half-duplex, RS485
- Interface
- RS485 Modbus, 9600, 19200, 38400 or 57600 baud, parity none (2 stop bits), even or odd (1 stop bit)
- Connection
- Terminal block max. 1.5 mm², cable entry from the rear
Electrical
- Power supply
- 15 to 24 V DC (+/-10%) or 24 V AC (+/-10%)
- Power consumption
- typ. 0.4 W (24 V DC), 0.6 VA (24 V AC)
Environment
- Operating temperature
- -35 to +70 °C
- Humidity
- max. 85% rH, non-condensing
- Protection
- IP30 IP rating
Performance
- Inputs
- 2 floating contact
- Outputs
- 2 x 0 to 10 V, min. load 10 kohm
- Accuracy
- +/-0.5 K, typical at 21 °C
Physical
- Housing material
- PC
- Colour
- Pure white
- Mounting
- Flush on 60 mm EU box, or surface mounted with screws or frame
- Dimensions
- 85 x 85 x 60 mm
- Weight
- 50 g
Part numbers
From the manufacturer's datasheet for WRF04 RC x RS485 Modbus.
Overview
The WRF04 RC x is a room controller for living spaces, hotel rooms and offices. It measures room temperature and runs a controller that drives proportional 0 to 10 V valves for heating and cooling, or a 6-way valve. The versions listed here have two 0 to 10 V outputs (AO2V) and report over RS485 Modbus RTU. The operating elements depend on the version: P is a setpoint potentiometer, S a rotary fan switch (up to five stages), T a presence button and D appears in some version codes. Some versions have a green status LED and some have a 29 x 12 mm LCD. There are two floating contact inputs. The back part carries the terminals so it can be wired first. It mounts on a 60 mm EU box or on the surface.