132
saia-pcd.com
SBC
Saia PCD®
kWh
L1
L2
L3
N
(PEN)
D /D
Consumption data collection
Measuring energy in both directions
With the bidirectional energy meters, energy can be measured in both directions of flow. The energy counters
work in a balancing out fashion (mode 2), which means that they form the sum of all measured phase outputs
analogue to the old Ferraris meters with a rotating disc.
The main area of use of bidirectional meters is wherever both energy flow directions occur (energy consump-
tion and feed), such as in photovoltaic systems. FBoxes are installed for connection to the PCD world to capture
the measured values. Connection to the e-Monitor is possible directly, without additional manipulation.
Integrating the energy meter as a component in an existing, external system
The M-Bus energy meters can be integrated into any M-Bus system and can be read out with any M-Bus Master. This enables use in
existing systems with an existing M-Bus infrastructure or even in new projects with various other M-Bus components.
The energy meters with integrated serial Modbus RTU interface enable fast and secure communication with superordinate systems.
The market offers many components for data transfer, backup and visualiation of the measured data. Simple integration via various
transmission channels is possible owing to the wide variety. With Modbus, existing equipment can be used without making costly
new acquisitions.
EPLAN macros are available for
project planning and engineering
Energy measurement of both current directions with one Saia PCD®
for further processing of the measured values
Level converter/
M-Bus Master
Electrical energy meter
3-phase
Heat
Meter
Gas
meter
Water
meter
PC
Single-
phase
Electrical
energy meter
Energy meter
with Modbus
RS-485 RF modem
HMI with
Modbus Master
Modbus
Modbus
S-Bus, twisted wire pair
Backup: T 250 mA (3×)
3 × 230/400 VAC
The eplan® electric P8 macros are
available on the support page.
The macros and article data are also
provided on the eplan® data portal.
max. 1200 m
RF modem see Page 138
