13
Instruction Manual C200
2.5 Connecting several column gauges
IMB-cas
type adapter cables are utilized to connect several column gauges.
The adapter cables fulfil two tasks :
1.) Transferring the supply voltage from the first column gauge to the next.
One power supply module can supply power to a maximum of 3 column gauges, depending on the connected
probes, sensors and measuring instruments. The number of column gauges decreases, if the current con-
sumption of the connected measuring instruments exceeds 200 mA. As shown in
Example 2
, power supply
modules can be added at will. Each module performs the function of supplying power up to the next power
supply module
.
2.) The measuring inputs
P1
to
P8
of the first column gauge are made available for the sub-
sequent column gauges.
The measuring inputs are passed on to the subsequent column gauges via the
IMB-cas
adapter cables. The
data flow direction within the adapter cable is always from the thinner adapter housing towards the thicker
adapter housing. A further measuring module in a series of column gauges will interrupt the connection to the
previous measuring modules, and make available its inputs for the subsequent column gauges, including the
one it is fitted into. See also example 2 on page 14 of this manual.
Note : Foot and hand switches can be cascaded in order to synchronize several column gauges ( e.g. for dynamic
measuring ). See chapter 2.7 for more detailed information.
Mechanical connection of column gauges :
The housing connector underneath the IMBus column
cover serves to link together the column gauges. Take
the connector out of its storage and screw it together
with the column cover.
!!! Do not overtighten screws !!!
Example 1 : connecting 3 column gauges
The three-column gauges are linked together via
two
IMB-cas
adapter cables. The adapter cables
are always fitted in the first position
( bottom
slot )
,
whereat the thinner adapter section is always
fitted to the first column gauge. When using
several
IMB-cas
adapter cables make sure that
the thinner adapter section is fitted in the first
position, with the thicker adapter section of the
arriving cable directly above it. The power supply
module of the first column gauge supplies all
three column gauges with power. The measure-
ment inputs
P1 to P4
are available at all three
column gauges.