Data Sheet for Product

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12/12

Siemens Building Technologies Heat-pump controller for wall mounting ACR12.481 CE1N3577en

HVAC Products 27.05.2004

Technical data

Operating voltage L, N AC 230 V ±10 %

Frequency 50 / 60Hz

Power consumption 3 VA (without field devices)

Max. fuse in supply line 10 A

Overvoltage category III

Max. cross-sectional area per terminal 2 wires each with 1.5 mm

or 1 wire with 2.5 mm

Fan control Q1, Q2, Q3 AC 230 V

Max. load, cos ϕ > 0.9 3.3 A

Type of automatic action according to EN60730 1.B

Triac controlled outputs Y1, Y10 AC 230 V

for valve actuators or external relays

Steady state load 3.5 VA (one thermal actuator)

Inrush current per output (<1 sec) max. 290mA

Type of automatic action according to EN60730 1.C

Return air sensor or alarm input B2 - M

Voltage against earth 230 V AC

Temperature sensor QAH11.1 (NTC Element 3K)

Signal input DU1- GND

Voltage (SELV), terminals open 9 V peak of a halfway rectified

sinusoidal voltage.

Short circuit current Effective value 5 mA

Cable length max. 250 m

Insulation

class II (if correctly installed)

Degree of protection IP 30 (note 1)

Pollution degree 2 according to EN60730.

(Representative of normal

household air circulation)

Operation Class 3K5 to IEC 721

Temperature 0...50 °C

Humidity < 85 % rH

Maximum height 2000 m above sea level

Transport Class 2K3 to IEC 721

Temperature –25...65 °C

Humidity < 95 % rH

- Conformity according to

EMC- directive 89/336/EWG

Low voltage directive 73/23/EWG

Electromagnetic compatibility

Immunity to interference EN 50082-1

Emissions EN 50081-1

Product safety

Automatic control devices for use in the

home and similar applications EN 60730-1

Special requirements for energy controllers EN60730-2-11

Colour RAL 9010

Note 1: In oder to have IP30 protection the controller must be mounted on a flat surface such that all

openings on the back side of the housing are completely covered.

Power supply

Electrical connections

Outputs

Inputs

Protection class

Housing protection

Environmental

conditions

Norms and standards

Housing