Danfoss SonoHCA Fact sheet

Fact Sheet

SonoHCA

Electronic heat cost allocators

SonoHCA heat cost allocators offers maximum flexibility for
parametrisation, significantly simplifies the installation and
setup process and improves consumption data monitoring.
SonoHCA uses Wireless M-Bus to relay data. With their
precision and their easy-to-read design, Danfoss heat cost
allocators guarantee the highly reliable transmission of
energy consumption data, which can be relayed in several
different ways.

Innovations

• Wireless M-Bus communication

• Automatic activation when installed on rail

• Remote sensor plug-in device available

• Password protection for parametrisation

• AES-128 encryption for secure data transmission

• Increased measuring range

• Cumulative record of frauds

• Up to 15 scrolling values can be displayed on the LCD

• Up to 144 monthly readings and 18 fortnightly readings saved

• 18 monthly maximum radiator temperature readings saved

Features

• Two-sensor measurement method

• Unit or product scale, to be defined according to the billing
method

• Meets EN 834:2013

• User-friendly operation by push button

• Optical interface for readout and parametrisation

• Several software tools available

• Peel-off barcode sticker for easy device registration

• Lithium battery with a typical lifespan of 10 + 1 years

• Made in Switzerland

• Display

• Unidirectional radio communication Wireless M-Bus
(868.95 MHz)

Parametrisation

A software enables you to parametrise SonoHCA allocators
with up to 45 different parameters via a standardised
optical interface. Only authorised users can modify these
settings. In order to protect your devices from frauds, both
the allocators and the software have a password function.
The factory-set “Installer” password can be changed for
all heat cost allocators. Parametrisation prior to delivery
greatly simplifies product handling.

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Readout
LCD

The SonoHCA heat cost allocators have a multi-purpose
LCD display. The full display is shown below:

88

888888

Display with all elements illuminated

SonoHCA allocators are supplied with the LCD display
switched off. Allocators can be supplied with a continuous
switched on display on request.

Optical interface

In accordance with the M-Bus format (EN 13757-3), the
standardised optical interface enables consumption
data and saved parameters to be relayed directly to a
PC. This data and these parameters may be viewed and
parametrised using the optical interface and a software.

Wireless M-Bus radio

The Wireless M-Bus radio communication interface
enables data readout using Wireless M-Bus radio
protocol (EN 13757-4) and complies with open metering
system (OMS) specifications version V3.0.1. The SonoHCA
uses unidirectional radio technology and transmits
the consumption data and saved parameters every 120
seconds for short (OMS) or long (walk-by) telegrams.

The SonoHCA’s radio readout can be set to the following
time periods:

• Short telegram (OMS): 24 hours a day, 7 days a week

• Long telegram (walk-by): < 12 hours a day, 7 days a week

Dimensions

Technical specifications

Measurement method Two-sensor
Scale Unit or product scale
Power supply 3 V lithium battery
Typical lifespan 10 + 1 years
Display LCD
Display size 6 digits (000000–999999)
Interface Optical interface compliant with EN 60870-5
Storage temperature -25–70 °C

Use

Radiator power 4–16,000 W

Measuring range

T

min

T

max

Measurement start Parametrisable
Set day Parametrisable

0–105 °C
0–120 °C (remote sensor)

35 °C

105 °C
120 °C (remote sensor)

Standards

Standard EN 834:2013
Certification HKVO A1.02.2015
CE compliance Compliant with Directive 2014/53/EU (RED)

Wireless M-Bus radio communication

Frequency 868.95 MHz
Communication Unidirectional
Protocol Wireless M-Bus
Encryption AES-128
Transmission standard EN 13757-4, mode T1

Broadcasting interval

Data transmission
periods

Short telegram (OMS): > 120 s
Long telegram (walk-by): > 120 s

Short telegram (OMS):
24 hours a day, 7 days a week
Long telegram (walk-by):
< 12 hours a day, 7 days a week

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ts already on order provided that such alterations can be m ade without subsequential changes being necessary in specications already agreed.

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© Danfoss | Energy Metering | 2019.05 VL.SH.B1.02