Koch 2.0 Series Operating Manual page 61

There is a risk of damage.
If a brake resistor is installed in the application, due to the
parallel connection with the PTC brake resistor installed in the
Energy storage solution the current through the two resistors
may become excessive and destroy the brake transistor in the
application.
See the data sheet of the PTC brake resistor.

If necessary, modify your application or consult

Michael Koch GmbH.
1
Fig. 6: Connecting terminals on the bottom of the housing
Determine the polarity of the DC link connections.

De-energise the DC link.

Make sure that there is no voltage on the DC link.

Remove the discharge bridge r between "–DC" q (black terminal) and "BR" w

(grey terminal).
Make sure that there is no voltage between "–DC" q (black terminal) and "+DC" e

(red terminal).
Connect the negative pole of the application's DC link output with

"–DC" q (black terminal) on the Energy storage solution.
Connect the application's brake chopper

output with the "BR" w (grey terminal) on the Energy storage solution.
The brake chopper output has the switched negative voltage from the DC link.

Please note:
this step is not required for a "fixed setting of operating voltage on the DC link".
Connect the positive pole of the application's DC link output with

"+DC" e (red terminal) on the Energy storage solution.
5 Commissioning
2
3
Operating manual Energy storage solutions
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V1.3DE/EN