18
Kamstrup A/S • 5512603_C1_GB_03.2016
MULTICAL® 801
8.4
M-Bus, type 67-00-20/67-00-27/67-00-29/67-0V/67-0P/67-0Q
M-Bus can be mounted in star, ring or bus topology. Depending on the power
supply of the M-Bus Master as well as the total cable resistance, up to 250
meters can be connected.
Cable resistance
< 29 Ohm
Cable capacity
< 180 nF
The M-Bus network is to be
connected to terminals 24 and 25.
The polarity is unimportant. M-Bus
is supplied with pulse inputs (at
module 1 only which is located
nearest the terminals).
Input A
Input B
65
66
67
68
25
24
M-BUS
A
(+)
(-)
(+) B
(-)
680K
680K
11K2
11K2
11K2
11K2
0
.1 µ
0
.1 µ
8.5
Radio + pulse inputs,
type 67-00-21/67-0W
The radio module is used for
wireless communication via a
license-free radio frequency and
is available for internal or external
antenna.
For further information on radio
please refer to
Technical Description
for Radio (5512-013)
.
The pulse inputs in this module are
identical with the ones described
earlier.
A
(+)
(-)
(+)
B
(-)
65
66
67
68
In-
A
In-B
11K2
11K2
11K2
11K2
680K
680K
0.1 µ
0.1 µ
