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