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a_rishi
Junior 2
Joined: 29 Apr 2014
Posts: 29
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 Posted: 06/12/2016 16:03 Post subject: ACS 800 ABB (Cabinet Built) |
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Hi Everybody
I hope someone could clarify me on this issue.
We have an ACS 800 ABB Drive (cabinet built) for 400 kW motor. When it is powered only, there is a transformer Trafomic TNR 26492 that smells (like burning).
I would like to know for what purpose is this transformer.
If it operates for 10 mins, we get alarm ACS 800 temp i.e. IGBT overheat.
Can someone suggest what test and action may be required
Thanking you beforehand. |
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lovato
Junior
Joined: 16 Oct 2016
Posts: 15
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| Posted: 06/12/2016 21:30 Post subject: Re: ACS 800 ABB (Cabinet Built) |
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| a_rishi wrote: | Hi Everybody
I hope someone could clarify me on this issue.
We have an ACS 800 ABB Drive (cabinet built) for 400 kW motor. When it is powered only, there is a transformer Trafomic TNR 26492 that smells (like burning).
I would like to know for what purpose is this transformer.
If it operates for 10 mins, we get alarm ACS 800 temp i.e. IGBT overheat.
Can someone suggest what test and action may be required
Thanking you beforehand. |
it's a 230VAC to 23V transformer?
Check ambient conditions.
Check air flow and fan operation.
Check heatsink fins for dust pick-up.
Check motor power against unit power.
Excessive IGBT junction to case temperature.
This can be caused by excessive load at low
frequencies (e.g. fast direction change with
excessive load and inertia).
remedy
R
Increase ramp time.
Reduce load.
Short circuit in brake chopper IGBT(s)
Replace brake chopper.
R
Ensure brake resistor is connected and not
damaged.
Excessive IGBT junction to case temperature.
This fault protects IGBT(s) and it can be
activated by short circuit at output of long
motor cables.
R
Check motor cables
Read
[URL=https://userscloud.com/zg6uf39ldp7d]ACS800_PCP_ESP_FW_B.pdf - 1.5 MB[/URL] |
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