10
VB 230/400-25
The closing of the mains contactor starts the following sequence:
1. The potential-free contact X11, X12 will be closed (control of the star contactor).
2. After a period of 6s X11, X12 will be opened.
3. After a delay of 60ms the potential-free contact X12, X13 will be closed (control of the delta
contactor).
The opening of the mains contactor starts the following sequence:
1. The contact X12, X13 will be opened (delta contactor will be switched off).
2. After the drop of the remanent voltage, X11, X12 will be closed (control of the star
contactor).
3. When the contact bounce time is over, the braking current will flow for approx. 1.5s after
the motor standstill.
In the case of star-delta starting, even if not implemented via the VersiBrake device, the star
contactor should be controlled via the contact on the terminals 11 and 12 (option „D“) to initiate
braking. Thus, the motor windings are interconnnected in time before the actual braking
operation.
Note:
To ensure that, in the case of external star-delta control, the starting
operation is not influenced by the VersiBrake, a break contact of the motor
contactor K1 has to be connected in series before the terminals 11 and 12.
10.4 Option „S“ – Standstill signaling relay
This option makes the motor standstill signal available on a potential-free contact (X16, X17).
Possible states on X16, X17:
Warning note:
Prior to using the standstill signaling contact for safety-directed purposes, it
is necessary to subject the application to a risk assessment according to
EN 1050 (ISO 14121).
No voltage applied to VersiBrake
Contact X16, X17 opened
Voltage applied to VersiBrake
Contact X16, X17 closed
Motor contactor K1 pulled in (X3, X4 opened),
motor runs
Contact X16, X17 opened
Motor contactor K1 dropped out (X3, X4 closed),
motor brakes
Contact X16, X17 opened
Motor contactor K1 dropped out (X3, X4 closed),
motor stands still
Contact X16, X17 closed
