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8. Combined M-Bus and pulse module
The combined M-Bus and pulse module has been
developed specifically to enable the simultaneous
readout by two different users. In this case the pulse
version will be delivered by standard as Mode
Technical data EDC M-Bus and pulse
Number of conductors
Cable length
Electromagnetic
compatibility
Pulse output function
Important note
For EDC applications with simultaneous use of pulse
output and M-Bus interface, only battery powered
or galvanically isolated pulse modules can be con-
nected to the pulse outputs. Otherwise, the EDC
module may be damaged in the case of a potential
difference between the connected devices.
Wiring diagram for connecting the ZENNER PDC
module to the EDC pulse module :
9. AES-Key /Data security
The EDC-modules send their data contents only
encrypted (AES-128). 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 electronic delivery note, which can
be downloaded from an associated portal.
U.
5
1.5 m
conforms the directive
89/336/EWG
Mode U, balanced pulses
10. Readout Data logger
The EDC 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 and related
software.
EDC wM-Bus
Datalogger
(Fw < 1.78)
Annual due date
max. 16
values
18
Monthly values
plus 18 half-
monthly values
Daily values
96
Quarter-hour values 96
11. Smart Metering functions
Important note!
The smart metering functions of the EDC
retrofit modules are factory disabled.
To use these functions, the respective
settings have to be made in dependence of the per-
manent flow (Q
) via the optical interface of the EDC
3
module. The programming of the smart metering
function
settings is made by using a ZENNER MSS software,
the universal interface MinoConnect and the ZE-
NNER infrared optohead. Alternatively, the ZENNER
Device Manager Basic app can be used instead of the
MSS software. To activate the smart functions, enter
the Q3 value of the meter in the MSS software and
click on the selection box "Activate smart functions".
Self-monitoring
The module has an integrated battery status
monitoring.
Tampering detection
It will be detected as soon as the scanning coils of
the EDC module are affected by a magnet.
EDC wM-Bus
(Fw >1.78)
EDC LoRaWAN®
2
18
plus 18 half-
monthly values
32
--
14
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