Need help understand compressor wiring

Thread Starter

fouad belkhadem

Joined Jun 28, 2018
19
Dears,


Please need some help with dammaged screw compressor mahle msk-g controller.

The connector illustration is in german and could not understand most of them (attached picture).
Planing replace the dammaged with arduino board.

Thanks in advance.IMG_20181120_180315~01.jpg
 

yellowfish

Joined Feb 9, 2009
28
Ok here it goes. I translate only the items not in English language:
#6 = pressure
#8 = rotation direction
#9 = external fault
#10 = ext. power on
#11 = ext. load
#12 = PTC overload protection
#13-20 are just indicators.
This seems to be a motor variable frequency drive VFD. Go to automationdirect and buy an off-shelf unit, rated for the motor HP and voltage.
Arduino won't do it, perhaps three of them.
 

Thread Starter

fouad belkhadem

Joined Jun 28, 2018
19
Thanks a lot for your support,the motor is 3 phase induction motor,only one direction with star delta start.
So 6 is for 420ma pressure sensor.
8 perhaps to detect if the notor rotate on wrong direction if one phase is absent.
12 i thing go to the switch on termal protection.
I wondering where goes ,tublure temp sensor,snd motor temp sensor,and inlet electrovalve,also there is oil radiator that should be cooled co fan.
 
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