wtw MIQ/Blue PS SET, Operating Manual

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Installation MIQ/Blue PS
3 - 2 ba75573e04 05/2009
Example Problem:
z
An IQ S
ENSOR
N
ET
island should consist of the following
components plus the MIQ/Blue PS:
z
In this example, the MIQ/Blue PS and the MIQ/CHV PLUS should
be mounted as a stack.
z
The IQ S
ENSOR
N
ET
system should be supplied with 100 ...
240 V AC.
Solution/proceeding:
z
First it is assumed that the MIQ/Blue PS suffices for power supply.
It does not have to be taken into account as a consumer. In the worst
case, i. e. with a docked MIQ/TC 2020 XT, the power requirement of
all components is 7.2 W. Power losses in cables do not have to be
taken into account due to the stack mounting.
z
Power rating: The calculated power requirement is greater than the
maximum power delivery of the MIQ/Blue PS line power supply unit.
Therefore, an additional power supply module has to be installed
(e.g. MIQ/PS).
z
New power rating: The MIQ/Blue PS has to be counted as a
consumer as well. Therefore, the power consumption is now 7.8 W.
With an MIQ/PS power supply module (18 W), there is still an
energy reserve of 10.2 W for any future extensions.
3.2.3 Topology and terminator switch
For failure-free operation, the terminator switches (terminating
resistors) must always be set to ON on two MIQ modules of the
IQ S
ENSOR
N
ET
island. On which modules this is required results from
the topology of the IQ S
ENSOR
N
ET
island:
Component Power requirement [W]
VisoTurb
®
700 IQ 1,5
ViSolid
®
700 IQ 1,5
SensoLyt
®
700 IQ 0.2
MIQ/CHV PLUS 1.0
MIQ/TC 2020 XT (temporarily docked) 3.0