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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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