ļ 2002 by ELTRA GmbH Germany ā January 2002 ā Service Manual OH 900 / ON 900 / ONH 2000
2.16-1
2.16
2.16
The furnace control board PW13
The current of the furnace is controlled on board PW13 .
The furnace current is detected by means of two current transformers and transferred to
an amplifier in the board PW 13. The electronic rack sends the set point to this amplifier,
too. The voltage on the primary side of the big furnace supply transformer is controlled, so
that the feedback signal from the current transformers and the set point from the electronic
rack are equal.
The feedback signal depends on the magnitude of the furnace current.
To adjust set point and furnace current use trimmer P1.
Enter an outgas power of 5.3 KW ( setting = 530 ) in the menu.
Start the analysis. Turn trimmer P1 during the outgas phase so that the ampere meter on
the front panel shows 4A.
This adjustment is only necessary in case the PW 13 has been replaced.
P1 P2
32066
PW13
TP3
TP7
TP1
TP2
TP6
TP4
TP 5
TP8
TP11
TP12
TP13
TP14
TP9
TP10
2-16-3
To Next Page
Loading...
Need help?
General
