10
5. Radio modules
The PDC wireless M-Bus radio modules are available
in T (standard), optionally and on request in S or
C-mode.
Various data telegrams are available.
The modules operate unidirectional and usually
send every 20 - 40 seconds. Special versions are
available on request and in certain quantities.
The LoRaWAN variant is available with a monthly
(scenario 1) or daily (scenario 2) transmission
interval. A variant with hourly values (scenario 3 = 8
telegrams with 3 hourly values each) is available on
request.
Technical data PDC-module
wM-Bus
LoRaWAN
TM
Transmission
rate
wireless M-Bus
unidirectional,
T1 (standard),
optionally: S1, C1
LoRaWAN 868
MHz; bidirektional
(class A)
Encryption
AES-128 according
to OMS
AES-128
Transmission
interval
typically 20 s;
other configura-
tions possible
Szenario 1
(monthly)
Scenario 2 (daily)
Transmission
power
25 mW
25 mW
6. AES-Key
The PDC-modules send their data contents only en-
crypted (AES-128, device-specific according to OMS).
To enable reception of the data telegrams and their
further processing, the AES-Key has to be furnished
to the respective recipients of the AES-Key. ZENNER
usually delivers the AES keys of the devices via elec-
tronic delivery note, which can be downloaded from
an associated portal.
7. Readout Data logger
The PDC modules have an internal memory (data
logger). The readout of the data which are not
already transmitted in the above data telegrams is
carried out by means of the optical head, MinoCon-
nect (USB or Radio) and related software.
Datalogger:
see 2. General technical data
8. Smart Metering functions (only valid for wM-Bus
PDC)
The smart functions are only valid if the PDC module
has been connected to a water meter with pulse
output and the appropriate nominal flow (Q3) of the
water meter has been selected.
Self-monitoring:
The module has an integrated battery status moni-
toring.
Leakage detection:
If over a period of 24 h (96 quarter hour values) the
flow value is never zero, than this indicates a leak.
The PDC module sets corresponding bits. If the flow
rate remains zero during one quarter of an hour (be-
fore reaching 96 quarters of an hour with no flow)
the algorithm restarts.
If 96 quarters of an hour were running with flow,
leakage remains set until during 8 quarters of an
hour in a row the flow remains zero. The event
memory stores the date and time of the event.
Meter Stop detection (blockade):
If no meter progress will be detected by the EDC
module over a period of 4 weeks, meter stop (block-
ade) is detected.
The blockade deemed to be revoked if a meter read-
ing difference of > 10 liters occurs in a quarter of an
hour.
PROPRIETARY AND CONFIDENTIAL
THE INFORMATION CONTAINED IN THIS DRAWING IS THE SOLE PROPERTY OF ZENNER INTERNATIONAL GMBH & CO. KG. ANY REPRODUCTION
IN PART OR AS A WHOLE WITHOUT THE WRITTEN PERMISSION OF ZENNER INTERNATIONAL GMBH & CO. KG. IS PROHIBITED.
PDC assembling
1
2
3
4
D
C
B
A
A 4
Arkel-Nr./Arcle-no.
Approved
Bennenung/Descripon
Zeichnungs-Nr./Drawing-no.
Gerät
Freimaßtoleranzen/General tolerances
Substute by
Ersetzt durch
Datum/Date
Bearb.
Genehm.
Checked
Drawn
Gepr.
DIN EN ISO 1302
Name/Name
Baugruppe
Subassembly
Product
Form- und Lagetolerierung/Form and
posion tolerances
DIN EN ISO 1101
Oberfläche/Surface
Scale
Massstab
Werkstoff /Material
Format
Ersatz für
Substute for
Rev.
Datum/Date Geänd./Chang.
Beschreibung/Descripon
2016
Num.
82
27
20.9
20.6
55.5
42
40.6
127
