6.4 Meters
Meters are used to acquire consumption values.
Purpose
Four independent meters are available.
Pulses from gas, hot water, cold water and electricity meters are processed. The
pulse values represent:
Energy in kJ, MJ, GJ, Wh, kWh, and MWh
Volume in m
3
, l
or ml
Variables without unit (0…3 decimal places)
Heat cost unit
BTU
The pulses are converted to consumption values as per the setting values, are
then added, and the cumulated values are stored as 15-month values at midnight
upon month rollover. The meters are used to optimize plant operation.
Pulse meters and associated counters are not suited for billing purposes since the
recording of consumption can fail due to various reasons such as during power
supply failures.
Note
Only meter readings (heat meters, electricity meters, etc.) with on-board counters,
battery backed where required, deliver the correct values.
Meters using Namur or SO circuitry are not supported by the RMS705B.
6.4.1 Activate meters
Assign an input to activate each meter. You can assign only inputs with identifier
"Pulse".
Main menu > Commissioning > Extra configuration > Data acquisition > Meter 1…4 >
Configuration
Operating lin
e Range Factor
y setting
Input n ---, N.X1, N.X2, ... ---
6.4.2 Display format
"Displayed unit" allows for selecting the unit to be displayed.
"Displayed format" defines the number of decimal places.
Main menu > Commissioning > Extra configuration > Data acquisition > Meter 1…4 >
Display form
at
Operating line Range Factor
y setting
Displayed unit Wh, kWh, MWh, kJ, MJ, GJ,
ml, l, m3, Heat cost unit,
No unit, BTU
kWh
Displayed format 0, 0.0, 0.00, 0.000 0
52 / 216
Siemens Switching and monitoring device RMS705B CE1P3124en
Building Technologies Data acquisition 01.04.2010
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