User Manual

20
Smart Infrastructure
CE2N5324en
2019-06-27
Power supply
The module (WZU-GPRS) is supplied complete with the required power supply module
(rated voltage AC 100…240 V or AC/DC 24 V).
Communication protocols
● E-mail via SMTP with authentication mode HELO, EHLO
● Passive FTP mode with authentication and change of remote directory
● HTTP POST and GET
● GSM data transparent M-bus @ 300 and 2400 baud and GSM data console TCP
Transparent M-bus @300 and 2400 baud and TCP console
● SMS for configuration
● Internet time synchronization with NTP or daytime protocol
Tariff control
The following options are available for tariff control.
NOTICE
The summation of energy and volume in the standard registers is performed independently
of the tariff situation!
Threshold value tariff (tariffs T2, 3, 4, 5, 6)
Tariff registers 1, 2 and 3 can be controlled via up to 3 threshold values.
Either energy or volume can be added up in the tariff registers. The threshold values can be
derived from the flow rate (tariff T2), power (tariff T3), temperature cold side (tariff T4), the
flow temperature heat side (tariff T5), or the temperature differential (tariff T6).
Supplied energy / adjusted energy (tariff T7)
In tariff register 1, the energy calculated from the temperature heat side is totaled (and not
from the temperature differential).
The Adjusted Energy function (as of FW 5.24) adds the energy in tariff register 1 that is
calculated from the reference temperature and the temperature on the warm side.
Returned energy (tariff T8)
In tariff register 1, the energy calculated from the temperature cold side is totaled (and not
from the temperature differential).
Heating/cooling energy meter (tariff T9)
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 quantity 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.