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Siemens
Ultrasonic heat and cooling energy meters UH50..
CE2N5324en
Building Technologies
2013-01-14
The CL module (WZU-CL) can be used to set up a point-to-point link, enabling the
meter to be read from a remote location (e.g. from the front door).
The CL module can be plugged into any of the 2 sockets. The meter can
accommodate only 1 CL module.
Data are refreshed each time a readout is made:
Property number, serial number, firmware version, error messages, missing time,
operating time, energy, tariff register, volume, mounting location, adjustment
values, unit configuration data, measuring range, M-bus addresses, system date,
and time of day.
Previous year’s values with set day for:
Energy, tariff register, volume, maxi-
mum power, and missing time.
18 monthly values for:
Energy, tariff register, volume, missing time, maximum
power, maximum flow rate, maximum flow temperature, maximum return tempera-
ture, and actual values for power.
The M-bus modules (WZU-MB, WZU-MB-G4, and WZU-MI) are used by the meter
to communicate with an M-bus central unit to transmit measured values.
For the WZU-MB, the scope of data can be preset with a jumper. With the 2 M-bus
modules, the secondary address is identical for both modules. This address can be
changed on the meter via the module plugged into socket 1 or via M-bus. The data
in the M-bus module are refreshed at 15-minute intervals. Using the UltraAssist
software, a shorter sampling cycle can be set on the WZU-MB-G4 and WZU-MI.
The modules are available in 3 different versions:
WZU-MB
M-bus module
for heat and heat/cooling energy meters,
generation 2, recommended up to firmware 5.14 as per EN 1434-3
WZU-G4
M-bus module
for heat and heat/cooling energy meters,
generation 4, firmware 5.15 as per EN 13757 and EN 1434-3,
and higher from meter firmware 5.17 and module firmware 4.10:
NTA standard/ DSMR2.2+ and 3.0
WZU-MI
M-bus module with 2 pulse inputs
for heat and heat/cooling
energy meters, generation 4, firmware 5.15 as per EN 13757
and EN 1434-3 and higher from meter firmware 5.17 and
module firmware 4.10: NTA standard/
DSMR2.2+ and 3.0
Modules WZU-MB and WZU-MB-G4 can be plugged into any of the 2 sockets.
Module WZU-MI must always be plugged into socket 1.
Function data
Note
M-bus modules
WZU-MB
WZU-MB-G4
WZU-MI
Function data
Note