Pulse Inputs And Outputs (Optional); M-Bus (Optional) - Zenner C5-CMF Notice D'installation Et D'utilisation

!! IMPORTANT !!
The choice of the place of installa-
tion can be carried out only once. A
subsequent change is not possible.
The selection is being activated with
the door symbol (top right of the
display):
Press and hold the button.
■
The door icon disappears and ap-
■
pears after about 2 seconds again.
Then release the button immedi-
■
ately.
The selected setting is accepted and
the unit is configured for the chosen
place of installation. The chosen
place of installation can be checked
in the first display of level 3 (Pt 1000r
= return pipe resp. colder pipe / Pt
1000u = supply pipe resp. warmer
pipe).
The meter is now ready for operation.

Pulse inputs and outputs (optional)

By meters with pulse inputs, the
pulse value can be called up in the
display (see the display overview,
level 4). The pulse value of the
outputs is permanently set and
corresponds with the last position of
the associated display value.
Typical connection (*)
U = 3 ... 30 V
Imax = 20 mA*
white
yellow
green
brown
(*) The connection of the external
resistor could be necessary to en-
sure an integrated current limiter.
Example:
Output 1 = energy output
Energy display = XXXXX.XXX
Last position = 0.001 MWh = 1 kWh
Output pulse = 1 kWh
colour
white
yellow
green
brown
Technical data I/O
Load
I/O 1, 2, 3
Cable
Pulse-duty
factor
Cable length
Input
frequency

M-Bus (optional)

The optional M-Bus interface com-
plies with standard EN 1434-3 and
operates with 2400 baud fixed. The
two conductors can be connected in
any order to the M-Bus network.
A firmly attached cable is included,
external wiring must be done by
oneself.
V Out
Technical data M-Bus
pulse Pulse
Cable length
Cable
GND
colour
brown
white
connection signification
I/O 1 In-/Output 1
I/O 2 In-/Output 2
I/O 3 In-/Output 3
common ground
GND
for I/O 1-3
max. 30V DC/20 mA
Open Drain, n-channel
FET
D = 3.8 mm, 4-wire
1:1 (out); 1:5 (in)
1.5 m
max. 1 Hz
1.5 m
D = 3.8 mm, 2-wire
connection signification
M-Bus 1 M-Bus-cable 1
M-Bus 2 M-Bus-cable 2
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