User Documentation

TFI-SERIES - Star-Delta
1
Time setting
2
Timescale Y
3
Timescale Y-
4
Status display (green): Supply voltage
5
Status display (yellow): Star-relay closed
Type Order-No.
TFIS 12-240VUC 2NO SD 2697270000
Ordering data
1
2
4
5
3
Timing function
Star-Delta Start-up (S)
When the supply voltage U is applied, the star-
relay switches into on-position and the set star-
time t1 begins. After the time t1 has expired the
star-relay switches into off-position and the set
transit-time t2 begins. After the time t2 has expi-
red the delta-relay switches into on-position. To
restart the function the supply voltage must be
interrupted and reapplied.
A1 / A2
Y 17/18
LED R
T1
S
star-delta
Δ 17/28
LED U/T
T2