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Meter 1...8
Siemens Building Technologies
HVAC Products
Table: Setting value effect at data point "[Time switch 1...4] inversion relay".
Relay contact
Inversion relay
NO contact
No
Yes
NC contact
No
Yes
Command sequence: Settings > Meter > Meter 1...8
Data point
Meter 1...8
Default val:
(Blank)
Setting val:
Name
Pulse unit
Default val:
Wh
Setting val:
Wh, kWh, MWh
Setting val: ml then also l, m
kJ then also MJ, GJ
No other pulse units can be set
at the following unit values:
No unit, heat cost unit, BTU
Pulse valency numerator
Default val:
1
Setting val:
1...9999
Resolution 1
Pulse valency denominator
Default val:
1
Setting val:
1...9999
Resolution 1
Overflow value
Default val:
99'999'999
Setting val:
0...999'999'999
Resolution 1
Comment and examples of pulse valency of numerator / denominator.
For numerators, every pulse corresponds to a certain valency, e.g. 10 kWh/pulse. This pulse valency is
specified on the meters. You must enter it as numerator and denominator.
Example 1:
Pulse valency 10 kWh/pulse
Setting
Pulse valency numerator
Pulse valency denominator = 1
Pulse unit
Commissioning instructions OZW775 V2.01
Parameterize OZW775
Relay signal from
function block,
time switch on / off
Off
On
Off
On
Off
On
Off
On
Explanation, example
Name (text) with max. 20 alphanumeric
characters. The name is displayed as
information text in ACS and messages.
If, for example, you set "Wh" under
"Extra configuration > Meters > Displayed unit",
you can also set kWh and MWh.
3
See comment and examples in the table below.
See comment and examples in the table below.
Set the overflow value indicated on the meter
(device). This makes sure that the display in
ACS is aligned to the meter reading.
Example 2:
Pulse valency 3.333... m3/pulse
= 10
Setting
= kWh
Relay contact
Relay contact in the
effective position
event of power
failure
Open
Open
Closed
Closed
Open
Open
Closed
Closed
Closed
Open
Pulse valency numerator
Pulse valency denominator = 3
Pulse unit
–
–
–
–
–
= 10
= m3
71/148
CE1C5663en
22.06.2012
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