ZENNER zelsius C5 IUF - Manual (Page 5)

5
A firmly attached cable is included: external wir-
ing must be done by oneself.
M-Bus (optional)
The optional M-Bus interface complies with the
norm 1434-3 and operates with 2400 baud fixed.
The two conductors can be connected in any or-
der to the M-Bus network.
Technical data I/O
Load max. max. 30V DC/20 mA
I/O 1, 2, 3 Open Drain, n-channel FET
Cable D = 3,8 mm, 4-core
Pulse-duty factor 1:1 (out); 1:5 (in)
Cable length 1,5 m
Input frequency max. 1 Hz
colour connection signification
brown M-Bus 1 M-Bus-Line 1
white M-Bus 2 M-Bus-Line 2
H
1max
= 30mm
L*
H
2
= 25mm
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53
* see page 2