Power supply

Operating voltage

AC 230 V

Frequency

50/60 Hz.

Power consumption

Max. 4.3 VA

Standby power consumption

1.7 VA

  • No internal fuse!

External preliminary protection with max. C 10 A circuit breaker in the supply line required under all circumstances.

Modbus interface

Type
Transmit mode
Connection
Baud rate
Address
Cable length
Identity
Transmission format (start bit – data – parity – stop)

RS485
RTU
Up to 32
9600, 19200 (default), 38400, 57600
1...247, 247 (default)
Max.1200 meters
Server
0 = 1-8-E-1 (default) / 1 = 1-8-O-1 / 2 = 1-8-N-1 / 3 = 1-8-N-2

Wiring connections

Diameter
Power, input, and output (L, N, Q1, Q2, Q3, Q5, Q14)
SELV signal (A, B, Ref, X1, M1, Y50, M2)
Wire


1.0…1.5 mm2
0.5…1.5 mm2
Solid or prepared stranded

Output

1-/2-/3-speed fan
Type
Voltage
Maximum current

Q1…Q3
On/Off
AC 230 V
5(3) A

External/internal circulation
Type
Voltage
Maximum current

Q5
On/Off
AC 230 V
5(3) A

Valve output
Voltage
Maximum current

Q14 (N.O.)
AC 230 V
5(3) A

ECM fan
Type
Voltage
Maximum current

Y50
Modulating
DC 0…10 V
1.0/5.0/10.0 mA

CAUTION

If fans must be connected in parallel, connect one fan directly,
for additional fans, one relay for each speed.

Operational data

Switching differential

- Heating mode

 

0.5...6 K (factory setting: 2 K)

Setpoint setting range (see note below)

- Comfort mode

- Protection mode

 

5...40 °C

Off, 5...40 °C

Built-in room temperature sensor

- Measuring range

- Accuracy at 25 °C

- Temperature calibration range

 

0…50 °C

< ±0.5 K

- 5.0...+5.0 K

Resolution of settings and display

- Temperature setpoints

- Current temperature value displayed

 

0.5 °C

0.5 °C

Note: The standard range is 5...40 °C. Customization is available upon request (e.g. 0…50 °C).

Ambient conditions and protection classification

Classification as per EN 60730

Function of automatic control devices
Degree of contamination
Overvoltage category
Action type
Rated impulse voltage
Maximum altitude
Software class

 

Type 1
2
III
1 as per EN 60730-1
4 kV as per EN 60730-1
3000 m as per EN 60730-1
A as per EN 60730-1

Design type

Device suited for use with equipment of safety class II.

Degree of protection of housing to EN 60529 (after mounting in position)

Room automation station
With terminal cover

 

IP30
IP30

Climatic ambient conditions

- Storage as per EN 60721-3-1
Temperature range
Humidity range

- Transport (packaged for transport) as per EN 60721‑3‑2
Temperature range
Humidity range

- Operation as per EN 60721-3-3 1)
Temperature range
Humidity range

 


-5...+50 °C
5...95 % r.h.


-25...+70 °C
5...95 % r.h.


0...50 °C
5...95 % r.h.

Mechanical ambient conditions

Storage as per EN 60721-3-1
Transport as per EN 60721-3-2
Operation as per EN 60721-3-3

 

Class 1M2
Class 2M2
Class 3M2

1) No condensation permitted.

Standards, directives and approvals

Electromagnetic compatibility

For residential, commercial environments

EU conformity (CE)

A5W00221374A *)

REACH

Regulation (EC) No 1907/2006 Registration, Evaluation, Authorization and Restriction of Chemicals (REACH)

RoHS

Directive 2011/65/EU restriction of the use of certain hazardous substances in electronic equipment

Environmental compatibility

The product environmental declaration (A5W00269668A *) contains data on environmentally compatible product design and assessments (RoHS compliance, materials composition, packaging, environmental benefit, disposal).

General

Weight without/with package

156.5 g / 273.9 g

Materials

  • Front cover
  • Mounting base

 

  • PC
  • PC + 10% GF

Housing flammability class according to UL94

V-0

*) The documents can be downloaded from http://siemens.com/bt/download.