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Product Information :

Product Name:  
RDF302 SIEMENS Flush-mount room thermostat for rectangular conduit box with Modbus communications, 2-/4-pipe fan coils or DX type equipment
Product Category:   ผลิตภัณฑ์เครื่องทำความร้อน, ความเย็น, อุณหภูมิ
Product Sub-Category:   แอร์ - อุปกรณ์และอะไหล่
Brand:   SIEMENS 
Product Type :   เครื่องมือ, เครื่องจักรและอุปกรณ์ 
สินค้า, ผลิตภัณฑ์ 
Short Description :   RDF302 S55770-T238 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

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