CARLO GAVAZZI WM4-96 - PROGRAMMING Manual page 24

24
Programming
C 3
HANNEL SLOT
Open
Open
Close
Close
C 2
HANNEL SLOT
tariff GAS is selected. Open = night-tariff GAS is selected.
* WM4-96 associates to the meter tariff 2 in Winter and
tariff 3 in Summer.
** WM4-96 associates to the meter tariff 1 in Winter and
tariff 2 in Summer.
When the tariff mode managed by the digital inputs (A3 and
C3 enabled "ON") is selected, the user can no longer select
the tariffs in the energy meters menus, but only the seasons.
Example 1: measure of all the instantaneous variables,
energies and gas + night gas. Proceed as follows: install the
analogue measuring module (AQ1018 or AQ1019), select
MEASURE in the INPUTS menu and enable the AQ1042 dig-
ital inputs module (that must be installed) by setting A1 ON,
A2 ON (GAS TARIFF), A3 OFF.
Example 2: measure of energies, powers dmd and PF's
dmd, as well as remote management of the tariff periods from
the digital inputs. The instrument is to be equipped with 2 digi-
tal input modules (AQ1042 slot A and AQ1038 slot C or 2x
AQ1042 slot A and C), while the analogue measuring module is
not necessary; to enable the 2 modules, set the instrument as
follows: A1 OFF, A2 OFF, A3 ON, C1 ON, C2 ON, C3 ON. Then,
set the full scale in the SYSTEM menu according to your plant.
Every modification to the measuring mode will
reset the meters.
Digital inputs programming
19
T
IME PERIODS SELECTION MODE
A C 3
HANNEL SLOT
Open
Close
Open
Close
A (if A2 enabled as GAS): Close = day-time
17
C A
CTION
Tariff 4
2 Winter / 3 Summer *
1 Winter / 2 Summer**
Tariff 4
33
VT-CT ratio
26