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Siemens Building Technologies
Pulse Adapter AEW36.2
CE1N2873en
HVAC Products
09.10.2003
Type summary
Standard version AEW36.2:
Connection of 2 meters to the connecting cable by means of the cable connectors sup-
plied with the unit. Labeling in German.
Country-specific version AEW36.2/DK:
Connection of 2 meters to the pulse adapter’s terminal block. Labeling in Danish.
Ordering
When ordering, please give type reference:
AEW36.2
Equipment combinations
When installing, the pulse adapter must be programmed with the data set delivered
with the parameter setting software for the respective meter. If meters not contained in
the meter data base shall be connec ted, a new data set must be requested from:
Siemens
Landis & Staefa electronic GmbH
Hr. Georg Bendlin
Sondershäuser Landstr. 27
D-99974 Mühlhausen
Tel.: +49 (0) 36 01 / 46 83 – 21
Fax: +49 (0) 36 01 / 46 83 – 61
E-Mail: [email protected]
With the correct data set installed, the following types of meters can be connected:
−
Water meters with pulse output
−
Heat meters with pulse output
−
Gas meters with pulse output
−
Steam meters with pulse output
−
Electricity meters with S0 interface (note: an additional WHZ.S0 converter is re-
quired, refer to Data Sheet CE1N2867)
Technical design
The pulse adapter handles pulses in accordance with the following specification:
Pulse source
limit values (if parameters are appropriately
set)
residual voltage when switched
< 0.7 V
max. frequency
< 17 Hz
blue / red
white
to AEW
Electronic outputs
(Open Collector,
Open Drain)
min. pulse width
30 ms
bounce time
< 1 ms
max. frequency
< 2 Hz
Mechanical switches
(Reed contact, re-
lays)
min. pulse width
260 ms
resistance R1
2.2 kOhm
R1
R2
Mechanical switches
with NAMUR circuits resistance R2
5.6 kOhm
The inputs are protected against overvoltages. Open collector outputs must be con-
nected with the correct polarities:
Channel 1: + blue, ground white
Channel 2: + red, ground white
