ZENNER EDC – Electronic Data Capture Modul - Manual (Page 12)

12
6. M-Bus module
The EDC-module as M-Bus module is used for
integration of water meters in wired M-Bus net-
works. The EDC-M-Bus module which is mount-
ed on the water meter enables the reading of the
water meter via Bus.
Cable assignment (polarity protected):
Brown M-Bus 1
White M-Bus 2
7. Pulse modules
The pulse modules can be delivered in three dif-
ferent versions (Table 3). Type P1 will be deliv-
ered as a standard.
EDC-Pulse Type P1: Type P2: Type P3:
Output 1: balanced* pulses Forward pulses Forward and reverse pulses
Output 2: Dismounting module alarm Reverse pulses Flow direction (open = forward)
Function of the pulse modules output
* Reverse pulses are reduced by the corresponding number of forward pulses
Cable assignment
Green Output 1
Yellow Output 2
Grey Ground (GND)
General specifications EDC M-Bus:
Number of conductors 2
Cable length 1,5 m
Electromagn.
compatibility
fulfils the European
Directive 89/336 EWG
General specifications EDC pulse
Number of conductors 3
Cable length 1,5 m
Output type N-channel
open-drain
(equivalent to
open-collector)
Max. output voltage 24 VDC
Max. output current 50 mA
Pulse length ≥ 10 ms
Output resistance (open) 110 Ώ
Output capacitance
(closed)
1 nF
Electromagn.
Compatibility
fulfils the European
Directive 89/336/EWG
Standard Pulse value
DN15-40
1 L/Imp.
DN50-125
10 L/Imp.
DN150-200
100 L/Imp
beginning DN300
1000 L/Imp
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