Service
105
TP 24: Output section [3]
TP 23: Output section [4]
For the range assignment of the infrared cell board IRC1.x see the correspondent
chapter Infrared cell board IRC1.x sections assignment.
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5.5 56BInfrared power supply
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The IRC module is powered by a 24VDC power supply which is specified with 5A.
Depending on the quantity and on the kind of IR cells in a module (rack), the
maximum current at the moment of switching ON from cold, can be as high as
3.5A.
If the temperature control is deactivated, the module can be operated with a power
supply of 24V / 1A.
In case of servicing an IR cell, the IR cell module has to be taken out of the
analyzer’s cabinet and be operated on a desk using an external power supply. The
24V power can then be connected on the connector J1 of the IRC board. See
graphic below.
Fig. 58: IR power supply
If there is no power supply 24VDC / 5A, the IR module can be operated by using a
power supply of 24VDC / 1A by setting a jumper on 2-Test°C of the JP1. However
1A is the absolute minimum current required. If the power supply can supply more
than 1A, a proper operation is more secure.
A jumper is possibly available on JP1 on the positions 3-Analysis or 4-Analysis. A
jumper on any of these two positions doesn’t have any functionality. These two
positions are simply for “parking” jumpers in order to have them available in case
they are needed.
NOTICE
Don’t forget to remove the jumper from position 2-Test°C before reinstalling the IR
module into the Analyzer.
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