RDF302 SIEMENS Flush-mount room thermostat for rectangular conduit box with Modbus communications, 2-/4-pipe fan coils or DX type equipment

Flush-mount room thermostat for rectangular conduit box with Modbus communications, 2-/4-pipe fan coils or DX type equipment

Technical data     Operating voltage AC 230 V   Power consumption 7 VA   Setpoint setting range 5...40 °C   Switching differential 0.5…6 K   Communication Bus: Modbus RTU (RS 485)   Analog inputs, number 2   Relay outputs Fan: N.O. contacts, non-floating , Valve: N.O. contacts, non-floating   Relay outputs, number 5   Relay output, switching voltage AC 230 V   Relay output, switching current 5 (2) A   Type of fixing Recessed rectangular conduit box BS4662 (ARG71) with fixing centres of 60.3 mm   Degree of protection IP30   Dimensions (W x H x D) 86 x 86 x 57 mm   Made by SIEMENS   Type RDF302   Stock no. S55770-T238

 RDF302 Flush-mounted room thermostats with RS485 Modbus communications
For 2-pipe, 2-pipe with electrical heater, and 4-pipe fan coil units
For use with compressors in DX type equipment
· RS485 communicative interface in Modbus RTU slave mode
· Backlit display
· 2P / PI / P control
· Outputs for on/off or 3-position control
· Outputs for 3-speed or 1-speed fan
· 2 multifunctional inputs for keycard contact, external sensor, etc.
· Operating modes: Comfort, Economy and Protection
· Automatic or manual fan speed control
· Automatic or manual heating/cooling changeover
· Minimum and maximum limitation of room temperature setpoint
· Control depending on the room or the return air temperature
· Adjustable commissioning and control parameters via local HMI or RS485
Modbus
· Mounting on recessed square conduit box, 60.3 mm fixing centers
· AC 230 V operating voltage
· User and parameter settings can be retained or restored with power loss