2.8 Options
2.8.1 Option Brake
The KFM05A has a positioning-function and therefore in some applications it needs a brake in
case of power failure to hold the position and prevent uncontrolled movements.
Holding brake (24 V or 230 V)
This brake holds the KFM05a in standstill position until a positioning operation is again possible. A
braking out of the motion is not recommended, because this, depending on the rotating mass,
would lead to higher wear and shorter life.
Emergency-stop brake (230 V)
This brake stops the KFM05A and the rotating mass out of the motion to standstill. This type of
brake is designed for higher load and is used for fast braking in handling-systems.
The KFM05a doesn’t need an additional relay board for the brake, because the relay is already
built in the KFM05a with brake. This relay switches safely the brake-power of the 24V brake. The
power 24V/0,5A must be provided by an external supply. The 24V-brake is directly connected to
the board; the 24V-supply is connected via X7:1 and X7:2.
There is also the possibility to directly connect the 230V-brake with the grid from within the
KFM05a. In this case, the brake is active whenever there is a power failure.
In addition, all brake variants can also be switched on and off externally, the brakes are connected
on a terminal block.
A KFM05a with brake always has a longer housing; therefore it is not possible to install a
brake additionally.
2.8.2 Option Safety relay
As an option, a safety relay can be installed at the factory. This is necessary if the KFM05a should
be used in applications in which security features are required. The safety relay can be activated
with the enable input X7:7 and then turns on the IGBT output. The normally open contact is
connected to the terminal X6:27 and X6:28 (30Vdc, 1A) which is connected to the other contacts.
SIEI-AREG GmbH
Gottlieb-Daimler-Straße 17/3
74385 Pleidelsheim Germany
Fon: +49 7144 89736 0
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