wtw IQ SENSOR NET System 2020 XT, Operating Manual

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System 2020 XT C
ONNECT
Installation
3 - 43
ba75970e01 10/2012
3.10.3 Checking the voltage supply
This test should always be performed:

after the initial commissioning

after any system extension or modification.
This test checks the power supply and the communication of the com
-
ponents after the system has been started.
Test procedure
1 Check the status of the LEDs on the MIQ power supply mod
-
ules (Fig. 3-31):
– Yellow lights upOperational voltage OK.
The operational voltage supplied is
constant and is max. 24 V.
– Red lights upOperational voltage with power limitation.
The operational voltage supplied is
adjusted to the load conditions.
– no LED lights up:Operational voltage too low.
The operational voltage supplied is
too low or the MIQ power supply
module is defective.
2 Dock any existing MIQ/TC 2020 XT mobile terminals on the
system as far away as possible from a MIQ power supply mod
-
ule (i.e. test of the power supply in the most unfavorable pos
-
sible conditions)
3 Check the status of the LEDs on all MIQ modules (except for
the MIQ power supply modules, see step 1) (Fig. 3-31):
– Yellow lights upOperational voltage OK
– Red lights upOperational voltage in warning range. The
component is fully functional. How
-
ever, any further slight drop in volt
-
age can lead to failure
– no LED lights up:Operational voltage in error range
The relationship between the supply voltage, the LED sta
-
tus and the log book entries is described in the section
11.1 G
ENERAL SYSTEM DATA
.