Pagina 42 di 93 Codice doc. 1080622209
Versione: 2022_02_21
Salvo modifiche tecniche
As soon as the meter has connected to the LoRaWAN network, “LorA Con” appears in
the LCD.
1.5 Three additional pulse inputs (optional; only in conjunction with M-Bus or radio)
With this option, additional instruments with pulse outputs can be read out via optical interface, M-Bus or radio.
General information about pulse inputs:
It is important to note that the acknowledged state of the art technology rules and the relevant legal restraints
(international and local; see “Relevant Norms / Standards / Literature Pulse Inputs”) are to be observed.
The installation has to be performed by authorized, skilled persons.
If the regulations and the information in the installation and operating instruction manuals are not strictly followed,
or if the installation is shown to be faulty, any resulting expenses will be charged to the company responsible for
the installation.
1.5.1 Relevant norms / standards / literature pulse inputs
IEC 60364-4-41 (2005-12)
Low-voltage electrical installations - Part 4-41: Protection for safety -
Protection against electric shock
IEC 60364-4-44 (2007-08)
Low-voltage electrical installations - Part 4-44: Protection for safety -
Protection against voltage disturbances and electromagnetic disturbances
IEC 60364-5-51 (2005-04)
Electrical installations of buildings - Part 5-51: Selection and erection of
electrical equipment - Common rules
IEC 60364-5-54 (2011-03)
Low-voltage electrical installations - Part 5-54: Selection and erection of
electrical equipment - Earthing arrangements and protective conductors
EN 50310 (2011)
Application of equipotential bonding and earthing in buildings with
information technology equipment
EN 1434-2 (2016)
Heat Meters - Part 2: Constructional requirements
1.5.2 Technical data pulse inputs
Pulse input class
IB according to EN 1434-2:2016
Connecting cable length
1 m
Voltage supply
+ 3 V DC
Source current
= 1,5 µA
High level input threshold
U
≥ 2 V
Low level input threshold
U
≤ 0,5 V
Pull-up resistor
2 MΩ
Pulse length
≥ 100 ms
Pulse frequency
≤ 5 Hz
1.5.3 Possible combinations of the different input (class IB) and output (class OA) devices
Class IA
Class IB
Class IC
Class ID
Class IE
Class OA
yes
yes
no
yes
no
Class OB
yes
no
no
yes
yes
Class OC
no
yes
yes
no
no
Class OD
no
no
yes
no
no
Class OE
no
no
no
no
yes
1.5.4 Setting up the three additional pulse inputs
The optional pulse inputs 1 + 2 + 3 for external meters can be set up using the “Device Monitor” configuration
software. You can configure serial number, manufacturer, version (0 … 255), medium code, input pulse value, unit
and starting value of the external meters.
