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Connection of 230V AC power line module
Technical features of main power supply:
•
230 V AC module / 24 V AC module,
•
terminal suitable for wires up to 2,5 mm²,
•
electrical insulation,
•
frequency 50 Hz,
•
power consumption 0,1 VA ±10%,
•
soldered-in fuse.
If no mains supply is connected, a back-up battery in the
mains unit provides the power supply. The date and time
are remain further actual, but none of the measuring
functions work, incl. flow rate measurement. The mains
unit tells the module whether mains voltage is present
and switches automatically to power save mode. The
display is also switched off, but can be switched on
again by pressing the pushbutton. Communication is
retained, e.g. over the M-Bus or the optical interface.
!
Calculators for network operation require a feeder:
•
230 V ± 10 %, 50 - 60 Hz, cable Ø 4 - 8 mm,
•
excess voltage up to 2,5 kV (excess voltage cate-
gory II).
Ambient conditions: environmental class A/C
according EN1434; international protection rating
IP54.
Only an authorised electrician or a person specially
trained for this task (electrical expert for specified
tasks) may lay and connect this feeder line. Before
removing the inner plastic cover the main power
shall be switched off. Never connect between two
phases, as this will destroy the mains unit!
The power line is installed in the lower part as follows:
1
Remove the battery.
2
Plug the circuit board plug into the motherboard
from the lower part of the secondary power line
connection.
3
Press both wires into the opening at the top of the
lower part in order to avoid damaging them later
when placing the upper part.
4
Connect the power lines to terminals 27 and 28.
!
After installing main power cable, the plastic cover
has to be installed with the two screws to protect
the contact of voltage leading parts and cable-pull-
relief.
5
Then re-assemble the upper part of the calculator.
!
Stick the power supply module label below left to
the upper part of the calculator.
Calculator interfaces
The calculator has two slots for extension modules.
Slot 1 is intended for the M-Bus communication module
or the pulse input module. Slot 2 is for the pulse input
function module (e.g. for two additional volume measu-
ring components) or pulse output function module (e.g.
for volume and energy pulse).
slot 1
slot 2
locating studs
fixation studs
!
The modules must not be reversed in the slots!
Always make sure that the modules are inserted in
the correct slots.
These modules have no effect on consumption recording
and can be retrospectively fitted without damaging the
calibration mark.
