Hi, I have similar Lenze SMD, with "OH" appearing after few minutes of running (even when there is no load). Fan is working and nothing seems to be very hot (checked with thermal camera - MAX 40ºC on "TOP209G" ic. Same thing happens if i remove control board (the one with display). If I remove big capacitors OH is not reported. Any hint what to look for?
hello, is there a pwm signal to the optos? Is there voltage on pins 5 and 8 of the igbt driver IC? Please check the driver IC. It would be wrong to say something without examining it.
Hi,
I have similar Lenze SMD, with "OH" appearing after few minutes of running (even when there is no load). Fan is working and nothing seems to be very hot (checked with thermal camera - MAX 40ºC on "TOP209G" ic. Same thing happens if i remove control board (the one with display). If I remove big capacitors OH is not reported.
Any hint what to look for?
Hi am facing a problum lenze 8400 oc2 i check all opto igbt smd but when run drive oc2
hello, is there a pwm signal to the optos? Is there voltage on pins 5 and 8 of the igbt driver IC? Please check the driver IC. It would be wrong to say something without examining it.
@@tekno-tekin i check opto change igbt replace gate firing ic hc244 but still when i run
@@tekno-tekin 18volt present at opto pin 8 and 5 also with u.v.w capaciter ground
@@tekno-tekin thanks for replying