Hi Toby!
First port of call is checking the input and output from your control transformer assuming you have checked all the supplies etc.
The control transformer basically supplies power to the control circuit and in effect isolates the chassis from a live supply fault thus protecting the user. If your 230v in and out that¡¯s what you should get on the meter. There¡¯s no polarity as it¡¯s AC.
On the A2 terminal side there is also a relay which might have tripped and needs the button reset pushed or changed from manual to auto on the dial. There are also two small glass fuses, fuse holder on the DIN rail, they¡¯re not as most think, fast fuses they are in fact slow variants to protect from startup surge!
Hope that helps... oh by the way if it¡¯s the Transformer Felder will want over ?300, try red electrical supplies and you¡¯ll get the equivalent for under ?30!
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On 11 Oct 2020, at 14:27, Airtight: Clamps by Air Compression <airtightclamps@...> wrote:
?
More info 1phase 3 phase , vfd ? ?
Designing and building for 50 years
On Oct 11, 2020, at 8:07 AM, fa18frog via groups.io <fa18frog@...> wrote:
?Toby,
? ? ?Just had a similar situation with my N4400. ?I would recommend checking the motor start capacitor. ?Likely a visual inspection will tell you if it¡¯s bad. ?The capacitor on the N4400 was mad hot and bulging at the seams.
James ?
