VB230/400-6/25/30LT 9
8.2 Control outputs
Behavior of the changeover contact on X5, X6, X7
* Special device with designation suffix SO1 or SO3
Control
terminals
Designation Description
X5, X6, X7 Interlock (potential-
free changeover
contact, common
contact on X5)
During braking, the contact between X5 and X6 is
open. This contact is to be looped into the control
circuit of the motor contactor. Therefore, the motor
cannot be started during braking.
The contact between X5 and X7 is closed during
braking. Thus, it is, e.g. in the case of star-delta-
connections, possible during braking to control the
star contactor in order to interconnect the motor
winding.
For more detailed information, please see connection
diagram under 12.1.
Status Interlocking contact
X5 – X6
Star contactor
contact X5 – X7
Reset by
Motor off closed open
Motor is running closed open
Motor is being
decelerated
open closed
Braking correctly fini-
shed
closed open
Braking frequency too
high
open closed short disconnection
from mains (5s)
Braking frequency too
high by SO1 or SO3*
closed open not necessary
Program-
controller-error
open closed short disconnection
from mains (5s)
Braking interrupt
(break on terminal X3,
X4)
open closed closing the open con-
tact on X3, X4
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