Data Sheet for Product

23
Smart Infrastructure
CE2N5324en
2021-03-
19
Returned energy (tariff T8)
In tariff register 1, the energy calculated from the temperature cold side is totaled (and not
from the temperature differential).
Heat/cooling energy meter (tariff 9)
In tariff register 1, the measured cooling energy is totaled; in tariff register 2, the measured
heat energy. In both cases, a threshold can be defined via the temperature heat side (cold
threshold, heat threshold).
Heat threshold exceeded and temperature difference > +0.2 K
=> The heat quantity is acquired
Cold threshold is breached and temperature differential < -0.2 K
=> Cooling energy is acquired
NOTICE
It is also measured in the event of negative temperature differentials.
Tariff control via time switch (tariff T10)
For tariff control, one switch-off time and one switch-on time per day can be defined. At the
switch-on time, the energy or volume is totaled in tariff register 1 and ended at the switch-off
time accordingly.
Tariff control via M-bus (tariff T11)
In tariff registers 1, 2 and 3, either energy or volume can be totaled. With the relevant M-bus
command, one of the 3 tariffs can be activated or all tariffs can be deactivated.
Surcharge quantity tariff by means of return temperature (tariff T12)
The energy is totaled based on the temperature cold side in tariff registers 1 or 2.
The totaled energy is calculated from the temperature differential cold side and a defined re-
turn threshold (and not from the temperature differential).
Above return threshold: T1 is added up.
Below return threshold: T2 is added up.
Display of tariff situation on the LCD
The current tariff state is displayed in the user loop together with the energy or the volume in
user LOOP 0.
No tariff state is displayed for tariffs T7 and T8.
For tariffs T2, T3, T4, T5, T6, T10, T11, and T12
No tariff register active
Tariff register 1 active
Tariff register 2 active
Tariff register 3 active