Is Dc coupling possible in PM240-2?

hello

Does Dc coupling is possible in PM240-2. What are technical requirements to do it. is it necessary to derating resistance of precharging resisto?

BR

Sławomir

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Split from G120 VS G120P, PM240-2 VS PM240P-2, CU230P-2 VS CU240E-2.

I looked at this some time ago and failed to get a difinitive answer, it is possible that this option has not had the necessary demand, in order to support the development cost.

My plan was to buffer the DC Link with a buck boost regulator using a supply from a bank of ‘super caps’, a requirement for temporary supply power loss.

I appeared they the DC link connection was fixed to the supply side of the DC link Capacitors, which would give rise to some instability. The plan was subsequently dropped.

Any response from the ‘field’ would be interesting?

You can take Booksize Motormodules instead of PM240-2.

@tractor: You can use Booksize motormodules in combination with Ultracaps:

https://support.industry.siemens.com/cs/at/en/view/109748701

This is much cheaper as a uninterruptible power supply.

tractor

I looked at this some time ago and failed to get a difinitive answer, it is possible that this option has not had the necessary demand, in order to support the development cost.

My plan was to buffer the DC Link with a buck boost regulator using a supply from a bank of ‘super caps’, a requirement for temporary supply power loss.

I appeared they the DC link connection was fixed to the supply side of the DC link Capacitors, which would give rise to some instability. The plan was subsequently dropped.

Any response from the ‘field’ would be interesting?